Falk Type YB & GHB Horizontal Right Angle Gear Drives

Falk Series YB & GHB Gear Drives Proven Performance for Thermal Capacity Applications (English Inch)

Falk Type YB & GHB Horizontal Right Angle Gear Drives Since 1897, Falk gear drives have benefitted from specialized research, design, and construction know-how. These precision surface hardened bevel and through hardened helical right angle YB and GHB gear drives are based on earlier models that became the standard in the early 1900 s. To maintain the reputation, and to keep a step ahead of today s increased industrial requirements, the 23 standard sizes now transmit higher capacity (up to 3727 hp and 2,684,000 lb-in output torque, without an increase in external dimensions. This means improved strength and performance of gears, shafts, and bearings. To hold them in exact alignment day after day and year after year, extra strong, accurately machined housings are provided. In addition, our Drive One and AB line of right angle shaft gear drives offer state-of-the-art surface hardened helical and bevel gearing. Please note the features and advantages illustrated above and described on Page 3. And as you review the basic information on Pages 4 & 5, we hope you ll sense the Rexnord know-how that is as much a part of these drives as the Falk precision gears. Rexnord Products and Services Worldwide Rexnord products and services are available 24 hours a day, worldwide. A network of distribution centers, sales offices, and distributors, serves Rexnord customers in the continental United States and Canada. Central and South America are served from offices in Brazil, Mexico, Chile, and Miami. Rexnord offices in Belgium, Denmark, Finland, France, Germany, Italy, Netherlands, and the United Kingdom service customers in Europe and Rexnord Offices in Australia, Republic of South Africa, China, Taiwan, and Singapore, service customers throughout Asia Pacific. Around the world, no customers with Falk gear drives have ever been without product or service because of a work stoppage. No matter where your operation is located, Rexnord is ready, day or night, to help keep your plant running. 2 (241-110) Rexnord Industries, LLC, 1968, 2007.

Selection Guide 241-110, February 2007 Table of Contents Advantages, design, and construction. 3 Basic Information..4-5 How to Select 6 Service Factors.6-7 Horsepower ratings...8,10,12,14,16,18,20,22 Torque Ratings 9,11,13,15,17,19,21,23 Exact s..24-25 Temperature and Altitude Factors.26 Thermal Horsepower.26-27 Cooing Fans Overhung Load Ratings and Instructions..,,31,32,33 Dimensions and Weight, Units.. 34, 35, 36 Motor Brackets..37-38 Bedplates 39-40 Backstops...41 L.S. End Clearance.. 41 Assemblies and Rotations..42 How to Order...42 No Leak Magnum Seals Keep Oil In The Falk Magnum seal keeps oil in the drive and keeps dirt out. The inner cage has close fitting clearances between the shaft and bearing race which prevent oil from leaving the drive. The old drain back ensures an effective seal by returning any oil that gets beyond the bush seal, back into the drive. Since there are no moving parts, this throttling bush seal arrangement will last as long as the drive is properly maintained. Keep Dirt Out An outer cover assembly when filled with grease, prevents the ingress of foreign particles by trapping them before they enter the drive. Periodically, introducing fresh grease through the fitting in the cover will purge contaminants. Rugged Housings All steel housings provide maximum strength and rigidity on Type YB drives. Accurate machining ensures precise alignment of all revolving elements necessary to maintain engineering and performance advantages. The split housing design with large inspection cover makes maintenance easy. Surfaces are smooth, flat, and easy to clean. The exterior is coated with the highest quality zinc chromate primer. The finish coat is sprayed with acid and alkali resistant enamel. Thick, extra strong cast iron housings are provided for single reduction Type GHB drives. Factory Warranty We re so confident in the performance and reliability of these Falk heavy-duty gear drives that we re backing this comprehensive offering with the best standard warranty in the business. Our full, 3-year Heavy-Duty Warranty provides shaft-to-shaft protection on all Falk components including bearings and seals (warranty extends for 3 years from date of shipment). It s an industry first and one more powerful reason why Rexnord is your ultimate bottom-line value. Bearings capacity roller bearings have been designed to exceed minimum AGMA specifications for the most severe loading conditions with minimum friction and easy starting. You can count on bearing life well in excess of industry standards for most applications. Rexnord s more precise selection methods are based on data obtained from actual tests of the drives. Precision Gearing From the special alloy steel poured in our own foundry through the final finishing operation, constant quality control is maintained at each manufacturing step. The Falk full depth tooth form with high pressure angle allows greater surface durability, greater resistance to abrasion and breaking, and more load carrying capacity. helical gear efficiency of 98½% per gear mesh remains constant throughout the entire life of the gears. Positive Lubrication Continuous splash system is positive and thorough, and provides higher thermal ratings through the use of large oil reservoir. Oil is carried to the working faces of the gear teeth through the oil troughs in the cover, then passes through the bearings. The system is basically simple, maintenance free and highly effective. Oil levels are easily checked with standard oil dipstick. Falk Magnum Seal The Falk Magnum seal shown below is also available for previous model Y drives. Ask for Service Manual 148-140 for retrofit instructions. ing Large, heavy duty shaft diameters are designed to maintain accurate support and alignment of gearing under the most adverse loading conditions, and provide optimum external thrust and overhung load capacities. Double ended low speed shaft extensions can be supplied at no extra charge when requested. Copyright 1968, 2007, Rexnord Industries, LLC. All Rights Reserved. Litho in U.S.A. Rexnord, A+Plus, Drive One, Steelflex, and Ram are registered trademarks. Falk and Magnum Seal are trademarks of Rexnord. Viton is a registered trademark of the DuPont company The contents of this Selection Guide are subject to change without notice or obligation. Information contained herein should be confirmed before placing orders Rexnord Industries, LLC, 1964, 2007. (141-110) 3

Basic Information Safety Notes Falk Gear Drives The Falk or Rexnord name on the gear drive is the purchaser s assurance that the drive was engineered, rated and manufactured to sound design practices. The power supplied to the geared drive must be equal to or less than the power for which the drive was selected using the appropriate service factor for the application. The customer must assume responsibility of isolating the geared drive from any vibratory or transient load induced by the driven equipment. Install and operate Falk products in conformance with applicable local and national safety codes and per Falk installation manuals which are shipped with gear drives and are also available upon request. Suitable guards for rotating members may be purchased from Falk as optional accessories. Consult your local Falk district office for complete details. People Conveying Equipment Selection of Falk products for applications whose primary purpose is the transportation of people is not approved. This includes such applications as freight or passenger elevators, escalators, man lift platforms and ski tows and ski lifts. If the primary purpose of the application is material conveyance and occasionally people are transported, the Falk warranty may remain in effect provided the design load conditions are not exceeded and certification to the appropriate safety codes and load conditions has been obtained by the system designer or end user from the appropriate enforcement authorities. Gear Drive Ratings All gear drive ratings in this selection guide allow 100% overload for starting loads and momentary overloads for electric motor driven applications operating 10 hours per day under uniform load conditions (unity Service Factor). For other conditions, compute an equivalent horsepower by multiplying the actual horsepower required for the application by the appropriate Service Factor. Gear Drive Identification Tables in this selection guide identify gear drives by size, type and ratio. From the following inset, the drive designation is 2070YB2indicating 2070 Horsepower and Torque Gear drive mechanical horsepower and torque ratings are tabulated in the catalog to permit selections for specific application requirements. When the required input speed falls between two tabulated input speeds of a drive with the same number of gear reductions, interpolate to determine drive rating. 1750 ±4% Drive Size L..S. YB Drive 2 Type TYPE YB2 HORSEPOWER RATINGS DRIVE SIZE Number of Reductions 2050 2062 2070 2080 2090 2100 2110 2120 5.06 350 1 195 224 379 407 678 691 877 5.60 310 1 180 224 321 387 618 690 815 6.20 0 127 184 224 342 407 678 691 877 6.86 255 120 170 224 317 407 515 647 697 Thermal Horsepower Thermal horsepower is the actual horsepower (without Service Factor) that a gear drive will transmit continually for three hours or more without overheating. Thermal ratings need not be considered when the continuous operating period does not exceed three hours and the shutdown time equals or exceeds the running time. However, when the running time exceeds the shutdown time, selection must be made on a basis of adequate thermal rating. Checking the thermal horsepower is extremely important. for If the drive creates heat faster than it can be dissipated, severe damage may occur. When the horsepower or torque rating appears in bold type, compare the actual horsepower required (without Service Factor) with the thermal horsepower capacity. If the actual load exceeds the thermal capacity, a fan (as described on Page ) may be added, an oil cooling system may be used, or a larger drive may be selected. Operating Temperature Gear drives can encounter sump oil temperatures up to 200 F(93 C) with higher temperatures possible in localized areas.since the drive will feel hot to the human hand at temperatures over 120 F (49 C), a portable pyrometer should be used to measure temperatures. 4 (141-110) Rexnord Industries, LLC, 1964, 2007.

Conditions Affecting Selections Non-Standard Application Procedures The following conditions may affect the drive selection procedure, drive size, and auxiliary equipment being furnished. Excessive Overloads The maximum momentary or starting load must not exceed 200% of rated load (100% overload). Rated load is defined as drive rating with a Service Factor of 1.0. If the maximum starting or momentary load exceeds the above conditions, compute a second equivalent horsepower by dividing the peak load by two. The gear drive selected must have capacity equal to, or in excess of, the larger equivalent horsepower. Reversing Service Applications involving either more than 20 reversals per 10 hour period, or less than 20 reversals per 10 hour period with peak torques greater than 200% of normal load must be referred to the Factory. Brake Equipped Applications When a gear drive is equipped with a working brake that is used to decelerate the motion of the system and the brake is located between the prime mover and the gear drive, select the drive based on the brake rating or the highest equivalent horsepower, whichever is greater.if the brake is used for holding only and is applied after the motion of the system has come to rest, the brake rating must be less than 200% of the catalog rating of the gear drive selected for the application. If the brake rating is greater than 200% of the gear drive catalog rating, refer the application to Factory. Also refer to Factory all applications in which the brake is located on the output shaft of the gear drive. Oversize Prime Movers Published Service Factors do not cover applications that require oversize prime movers for high energy or peak loads. Refer such applications to Factory for selection of suitable drives. Variation For variable or multi-speed applications Refer to Page for speed ranges of gear drives. Variable or multi-speed applications require special consideration to provide adequate splash lubrication at the slowest speed, but without excessive heating or churning at the highest speed. It is essential that all orders indicate minimum and maximum speeds, as well as the speed duration cycles. Effects of Solar Energy If a drive operates in the sun at ambient temperatures over 100 F (38 C), then special measures should be taken to protect the drive from solar energy. This protection can consist of a canopy over the drive or reflective paint on the drive. If neither is possible, a heat exchanger or other cooling device may be required to prevent the sump temperature from exceeding the allowable maximum of 200 F (93 C). Overhung Loads and Thrust Loads The overhung load and thrust ratings published in this selection guide are based on a combination of the most unfavorable conditions of rotation, speed, direction of applied load, and drive loading. If the calculated load exceeds the published value, or if an overhung load and thrust load are applied simultaneously to a shaft, refer complete application information to Factory. For more information, refer to tables and guidelines on Pages through 33. Product Modifications Rexnord can supply special product modifications to suit your application needs. Contact Factory for housing modifications, special ratios, special shafts, special mounting conditions, accessory modifications, and other special application requirements. Rexnord Industries, LLC, 1968, 2007. (241-110) 5

How to Select Before making any selections, refer to the Basic Information and Conditions Affecting Selections on Pages 4 and 5. How to select by hp method 1. Determine Service Factor from Table 2 or 3. For occasional and intermittent service or engine driven applications, refer to the instructions and Table1 below. 2. Calculate equivalent horsepower by multiplying the actual horsepower to be transmitted by the Service Factor. If momentary or peak loads exceed 200% of the normal load, refer to the introductory instructions on Page 5. 3. For ratio, divide high speed shaft by low speed shaft. 4. Determine drive size and nearest standard ratio from the Horsepower Selection Tables on Pages 8, 10,12, 14, 16, 18, 20, or 22. Opposite the high speed shaft, and the desired ratio and output speed, trace right to a horsepower capacity equal to or in excess of the equivalent horsepower calculated in Step 2. Read the size and type of drive at the top of the column. If the required high speed shaft is not listed, select the nearest listed speed and proportion the required and equivalent horse-power to suit. When the horsepower rating is shown in bold face type, check the drive thermal rating on Pages 26 or 27. If the thermal horsepower rating is less than the actual required horsepower (without Service Factor), refer to Page for information regarding Falk cooling fans. 5. Check shaft connections as instructed on Page and drive dimensions starting on Page 34. How to select by torque method Determine Service Factor, equivalent torque and drive selection by following the same procedures outlined for the horsepower method, but in Step 4, refer to Torque Selection Tables on Pages 9, 11, 13, 15, 17, 19, 21, or 23. Interpolate torques for speeds not listed. When torque rating is shown in bold face type, convert the actual required torque to horsepower and check against the thermal ratings on Pages 26 or 27. To convert, use the torque (lb-in) hp = and speed () at low speed shaft of the drive in the following formula: Occasional and intermittent service or engine driven applications For multi-cylinder engine driven applications and all applications operating intermittently up to 3 hours per day, refer to Table 2 or 3 for the Service Factor of the same application operating 3 to10 hours per day. Next, in the first column of Table 1, find this same Service Factor in bold face type. Then, to the right, under the desired hours service and prime mover, locate the converted Service Factor. For example, from Table 3, the Service Factor is 1.00 for a uniformly loaded belt conveyor. From Table 1, for the same application, the following are the Service Factors for various conditions. 1. Engine driven (multi-cylinder): 3-10 hours per day, use 1.25. 2. Engine driven (multi-cylinder): over 10 hours per day, use 1.50. 3. Motor driven: up to 3 hours per day, use 0.80. Table 1 Service Factor Conversions Table 2or 3 3 to 10 Hour Service Factor 3 to 10 Hours per Day Multi-Cyl Engine Over 10 Hours per Day Motor Multi-Cyl Engine Torque x output speed 63,000 Intermittent Up to 3 Hours per Day Multi-Cyl Motor Engine 1.00 1.25 1.25 1.50.80 1.00 1.25 1.50 1.50 1.75 1.00 1.25 1.75 2.00 2.00 2.25 1.50 1.75 2.00 2.25 2.25 2.50 1.75 2.00 For applications operating one half hour or less per day and application driven by single cylinder engines, refer to Factory. These service factors are based on the assumption that the system is free from serious critical and torsional vibrations and that maximum momentary or starting loads do not exceed 200% of the normal load. TABLE 2 Service Factors Listed by Industry for electric motor, steam turbine, or hydraulic motors drives Recommendations are MINIMUM and normal conditions are assumed. Service Industry 3to 10 Over 10 Hour Hour BOTTLING AND BREWING Bottling Machinery. 1.00 1.25 Brew Kettles, Continuous Duty.. 1.00 1.25 Can Filling machines... 1.00 1.25 Cookers Continuous Duty. 1.00 1.25 Mash Tubs Continuous Duty.. 1.00 1.25 Scale Hoppers Frequent Starts. 1.25 1.50 CLAY WORKING INDUSTRY Brick Press. 1.75 2.00 Briquette Machines. 1.75 2.00 Clay Working Machinery 1.25 1.50 Pug Mills.. 1.25 1.50 DISTILLING (See Brewing) DREDGES Cable Reels, Conveyors. 1.25 1.50 Cutter Head & Jig Drives 1.75 2.00 Maneuvering Winches, Pumps.. 1.25 1.50 Screen Drives. 1.75 2.00 Stackers, Utility Winches 1.25 1.50 FOOD INDUSTRY Beet Slicers 1.25 1.50 Bottling, Can Filling Machine 1.00 1.25 Cereal Cookers 1.00 1.25 Dough Mixers, Meat Grinders.. 1.25 1.50 LUMBER INDUSTRY Barkers Spindle Feed. 1.25 1.50 Barkers Main Drive 1.75 1.75 Carriage Drive.Refer to Factory Conveyors Burner. 1.25 1.50 Main or Heavy Duty 1.50 1.50 Main Log.. 1.75 2.00 Re-Saw Merry-Go-Round 1.25 1.50 Slab 1.75 2.00 Transfer 1.25 1.50 Chains Floor 1.50 1.50 Chains Green 1.50 1.75 Cut-Off Saws Chain & Drag.. 1.50 1.75 Debarking Drums.. 1.75 2.00 Feeds Edger. 1.25 1.50 Feeds Gang. 1.75 1.75 Feeds Trimmer 1.25 1.50 Log Deck.. 1.75 1.75 Log Hauls Incline, Well Type.. 1.75 1.75 Log Turning Devices 1.75 1.75 Planer Feed 1.25 1.50 Planer Tilting Hoists. 1.50 1.50 Rolls Live Off Bearing Roll Cases 1.75 1.75 Sorting Table, Tipple Hoist.. 1.25 1.50 Transfers Chain & Craneway.. 1.50 1.75 Tray Drives 1.25 1.50 Veneer Lathe Drives. Refer to Factory OIL INDUSTRY Chillers 1.25 1.50 Oil Well Pumping Refer to Factory Paraffin Filter Press. 1.25 1.50 Rotary Kilns 1.25 1.50 PAPER MILLS Agitator (Mixer) 1.50 Agitator for Pure Liquids 1.25 Barking Drums, Barkers Mech.. 2.00 Beater. 1.50 Breaker Stack. 1.25 Calender.. 1.25 Chipper 2.00 Chip Feeder.. 1.50 Coating Rolls. 1.25 Conveyors.. Chip, Bark, Chemical.. 1.25 Log (incl. Slab). 2.00 Couch Rolls 1.25 Cutter. 2.00 Cylinder molds 1.25 Dryers Paper Mach. & Conveyor Type 1.25 Service Industry 3to 10 Over 10 Hour Hour Embosser.. 1.25 Extruder 1.50 Fourdrinier Rolls Lumpbreaker, Wire Turning Dandy & Return Rolls... 1.25 Jordan. 1.50 Kiln Drive.. 1.50 Mt. Hope & Paper Rolls. 1.25 Platter. 1.50 Presses (Felt & Suction). 1.25 Pulper (Continuous). 1.50 Repulper (Heavy Shock). 2.00 Reel (Surface Type). 1.25 Screens Chip & Rotary.. 1.50 Vibrating... 2.00 Size Press.. 1.25 Super Calenders.. 1.25 Thickener & Washer AC Motor.. 1.50 DC Motor.. 1.25 Vacuum Pumps 1.50 Wind & Unwind Stand.. 1.25 Winders (Surface Type). 1.25 Yankee Dryers 1.25 PLASTIC INDUSTRY Batch Drop Mill, 2 smooth rolls. 1.25 1.25 Calenders. 1.50 1.50 Compounding Mills. 1.25 1.25 Continuous Feed, Holding & Blend Mill. 1.25 1.25 Extruders.. 1.50 1.50 Variable Drive... 1.50 1.50 Fixed Drive.. 1.75 1.75 Intensive Internal Mixers. Batch Mixers 1.75 1.75 Continuous Mixers. 1.50 1.50 RUBBER INDUSTRY Batch Drop Mill, 2 smooth rolls. 1.50 1.50 Calenders. 1.50 1.50 Cracker, 2 corrugated rolls. 2.00 2.00 Cracker Warmer 2 roll, 1 corrugated roll... 1.75 1.75 Extruders.. Continuous Screw Operation 1.50 1.50 Intermittent Screw Operation 1.75 1.75 Holding, Feed & Blend Mill 1.25 1.25 2 Roll. Intensive Internal Mixers. Batch Mixers 1.75 1.75 Continuous Mixers. 1.50 1.50 Mixing Mill 2 smooth rolls. (if corrugated rolls are used, use Cracker Warmer service factors). 1.50 1.50 Refiner 2 roll. 1.50 1.50 SEWAGE DISPOSAL Bar Screens 1.00 1.25 Chemical Feeders.. 1.00 1.25 Collectors. 1.00 1.25 Dewatering Screens. 1.25 1.50 Scum Breakers 1.25 1.50 Slow or Rapid Mixers... 1.25 1.50 Thickeners. 1.25 1.50 Vacuum Filters 1.25 1.50 SUGAR INDUSTRY Cane Knives, Crushers. 1.50 Mills (low speed end)... 2.00 TEXTILE INDUSTRY Batchers, Calenders 1.25 1.50 Card Machines 1.25 1.50 Dry Cans, Dryers... 1.25 1.50 Dyeing Machinery.. 1.25 1.50 Knitting Machinery.. Refer to Factory Looms, Mangles, Nappers, Pads.. 1.25 1.50 Range Drives.. Refer to Factory Slashers, Soapers, Spinners, Tenter Frames, Washers, Winders 1.25 1.50 WINDLASS Refer to Factory Service Factors for paper mill applications are applied to the nameplate rating of the electric drive motor at the motor rated base speed and are consistent with those shown in TAPPI standards. Anti-friction bearings only. A service factor of 1.00 may be applied at base speed of a super calender operating over a speed range of part constant hp and part constant torque where the constant hp speed range is greater than 1.5 to 1. A service factor of 1.25 is applicable to super calenders operating at constant torque over the entire speed range or where the constant hp speed range is less than 1.5 to 1. 6 (241-110) Rexnord Industries, LLC, 1968, 2007.

TABLE 3 Service Factors Listed by Application for electric motor, steam turbine or hydraulic motor drives recommendations are MINIMUM and normal conditions are assumed Application 3to 10 Hour Service Over 10 Hour AGITATORS Pure Liquids. 1.00 1.25 Liquids & Solids.. 1.25 1.50 Liquids-Variable Density.. 1.25 1.50 APRON CONVEYORS Uniformly Loaded or Fed. 1.00 1.25 Heavy Duty. 1.25 1.50 APRON FEEDERS 1.25 1.50 ASSEMBLY CONVEYORS Uniformly Loaded or Fed. 1.00 1.25 Heavy Duty. 1.25 1.50 BALL MILLS BARGE HAUL PULLERS.. 1.75 2.00 BARKING Drums (Coupling Connected). 2.00 Mechanical. 2.00 BAR SCREENS (Sewage) 1.00 1.25 BATCHERS (Textile). 1.25 1.50 BELT CONVEYORS Uniformly Loaded or Fed. 1.25 1.25 Heavy Duty. 1.25 1.50 BELT FEEDERS.. 1.25 1.50 BENDING ROLLS (Machine) 1.25 1.50 BLOWERS Centrifugal. 1.00 1.25 Lobe.. 1.25 1.50 Vane.. 1.00 1.25 BOTTLING MACHINERY 1.00 1.25 BREWING.. See Table 2 BRICK PRESS (Clay Working) 1.75 2.00 BRIQUETTE MACHINES (Clay Working).. 1.75 2.00 BUCKET Conveyors Uniform.. 1.00 1.25 Conveyors Heavy Duty... 1.25 1.50 Elevators Continuous. 1.00 1.25 Elevators Uniform 1.00 1.25 Elevators Heavy Duty. 1.25 1.50 CALENDERS Rubber and Plastic..SeeTable 2 Textile.. 1.25 1.50 CANE KNIVES.. 1.50 CAN FILLING MACHINES 1.00 1.25 CARD MACHINES (Textile) 1.25 1.50 CAR DUMPERS. 1.75 2.00 CAR PULLERS.. 1.25 1.50 CEMENT KILNS See Mills, Rotary CENTRIFUGAL Blower, Compressors, Discharge Elevators, Fans or Pumps 1.00 1.25 CHAIN CONVEYORS Uniformly Loaded or Fed. 1.00 1.25 Heavy Duty. 1.25 1.50 CHEMICAL FEEDERS (Sewage).. 1.00 1.25 CLARIFIERS.. 1.00 1.25 CLASSIFIERS 1.25 1.50 CLAY WORKING See Table 2 COLLECTORS (Sewage) 1.00 1.25 COMPRESSORS Centrifugal. 1.00 1.25 Lobe 1.25 1.50 Reciprocating Multi-Cylinder. 1.25 1.50 Single-Cylinder 1.75 2.00 CONCRETE MIXERS Continuous. 1.25 1.50 Intermittent. 1.25 1.50 Application 3to 10 Hour Service Over 10 Hour CONVEYORS Uniformly Loaded or Fed: Apron or Bucket... 1.00 1.25 Assembly, Belt, Chain, Flight, Oven, Screw. 1.00 1.25 CONVEYORS Heavy Duty, Not Uniformly Fed Apron, Assembly, Belt,. Bucket, Chain, 1.25 1.50 Flight,Oven, Screw. CONVEYORS Severe Duty See Mills, Rotary Live Roll.Refer to Factory Reciprocating Shaker. 1.75 2.00 COOKERS (Brewing & Distilling), (food).. 1.00 1.25 COOLING TOWER FANS Refer to Factory CRANES Dry Dock Cranes Main Hoists. 1.00 1.25 Bridge and Trolley Travel.Refer to Factory CRUSHERS Ore or Stone 1.75 2.00 Sugar.. 1.50 DEWATERING SCREENS (Sewage).. 1.25 1.50 DISC FEEDERS.. 1.00 1.25 DISTILLING. See Table 2 DOUBLE ACTING PUMPS 2 or more Cylinders. 1.25 1.50 Single Cylinder..Refer to Factory DOUGH MIXER (Food). 1.25 1.50 DRAW BENCH (Metal Mills) Carriage & Main Drive 1.25 1.50 DREDGES.. See Table 2 DRY DOCK CRANES. DRYERS & COOLERS (Mills, Rotary). 1.50 DYEING MACHINERY (Textile) 1.25 1.50 ELEVATORS Bucket-Uniform Load. 1.00 1.25 Bucket-Heavy Duty.. 1.25 1.50 Bucket-Continuous.. 1.00 1.25 Centrifugal Discharge 1.00 1.25 Escalators..Not Approved Freight.Not Approved Gravity Discharge 1.00 1.25 Man Lifts, Passenger. Not Approved EXTRUDERS (Plastic & Rubber). See Table 2 FANS Centrifugal. 100 1.25 Cooling Towers..Refer to Factory Forced Draft 1.25 Induced Draft.. 1.25 1.50 Large (Mine, etc.) 1.25 1.50 Large lndustrial.. 1.25 1.50 Light (Small Diameter) 1.00 1.25 FEEDERS Apron, Belt. 1.25 1.50 Disc.. 1.00 1.25 Reciprocating.. 1.75 2.00 Screw.. 1.25 1.50 FLIGHT CONVEYORS Uniform. 1.00 1.25 Heavy.. 1.25 1.50 FOOD INDUSTRY... See Table 2 GENERATORS (Not Welding) GRAVITY DISCHARGE ELEVATORS HAMMER MILLS. 1.00 1.25 1.00 1.75 1.25 2.00 Application 3to 10 Hour Service Over 10 Hour HOISTS Heavy Duty. 1.75 2.00 Medium Duty.. 1.25 1.50 Skip Hoist.. 1.25 1.50 INDUCED DRAFT FANS 1.25 1.50 KILNS See Mills, Rotary LAUNDRY WASHERS 1.25 1.50 LAUNDRY TUMBLERS.. 1.25 1.50 LINE SHAFTS Driving Processing Equipment 1.25 1.50 Other Line s, Light.. 1.00 1.25 LIVE ROLL CONVEYORS Refer to Factory LOBE BLOWERS OR COMPRESSORS 1.25 1.50 LOG HAULS (Lumber) Incline-well Type. 1.75 1.75 LOOMS (Textile) 1.25 1.50 LUMBER INDUSTRY. See Table 2 MACHINE TOOLS Auxiliary Drives.. 1.00 1.25 Bending Rolls.. 1.25 1.50 Main Drives. 1.25 1.50 Notching Press (Belted).. Refer to Factory Plate Planers 1.75 2.00 Punch Press (Geared) 1.75 2.00 Tapping machines... 1.75 2.00 MANGLE (Textile).. 1.25 1.50 MASH TUBS (Brewing & Distilling).. 1.00 1.25 MEAT GRINDERS (Food) 1.25 1.50 METAL MILLS Draw Bench Carriages & Main Drives.. 1.25 1.50 Pinch, Dryer & Scrubber Rolls, Reversing Refer to Factory Slitters.. 1.25 1.50 Table Conveyors, Non-Reversing Group Drives. 1.25 1.50 Non-Reversing Individual Drives.. 1.75 2.00 Reversing.. Refer to Factory Wire Drawing & Flattening Machines 1.25 1.50 Wire Winding Machines.. 1.25 1.50 MILLS, ROTARY Ball and Rod Mill with Spur Ring Gear.. 2.20 with Helical Ring Gear. 1.65 Direct Connected. 2.20 Cement Kilns, Dryers & Coolers Pebble, Plain & Wedge Bar 1.65 Mills.. Tumbling Barrels. 1.75 2.00 MIXER (Also see Agitators) Concrete, Cont. & lnt. 1.25 1.50 Constant Density. 1.00 1.25 Variable Density. 1.25 1.50 NAPPERS (Textile).. 1.25 1.50 OIL INDUSTRY. See Table 2 ORE CRUSHERS. 1.75 2.00 OVEN CONVEYORS Uniform. 1.00 1.25 Heavy Duty. 1.25 1.50 PAPER MILLS See Table 2 PASSENGER ELEVATORS Not Approved PEBBLE MILLS.. 1.50 PLATE PLANERS. 1.75 2.00 PRINTING PRESSES Refer to Factory PROPORTIONING PUMPS.. 1.25 1.50 PUG MILLS (Clay).. 1.25 1.50 PULLERS (Barge Haul).. 1.75 2.00 Application 3to 10 Hour Service Over 10 Hour PUMPS Centrifugal. 1.00 1.25 Proportioning.. 1.25 1.50 Reciprocating Single Act., 3 or more Cyl.. 1.25 1.50 Double Act., 2 or more Cyl. 1.25 1.50 Single Act., 1 or 2 Cyl.. Refer to Factory Double Acting, 1 Cyl... Refer to Factory Rotary: Gear, Lobe, Vane 1.00 1.25 PUNCH PRESSES (Gear Driven)... 1.75 2.00 RECIPROCATING Conveyors & Feeders.. 1.75 2.00 RECIPROCATING COMPRESSORS MultI-Cylinder.. 1.25 1.75 Single Cylinder.. 1.75 2.00 ROD MILLS See Mills, Rotary ROTARY Pumps.. 1.00 1.25 Screens (Sand or Gravel). 1.25 1.50 RUBBER & PLASTICS INDUSTRIES See Table 2 SAND MULLERS. 1.25 1.50 SCREENS Air Washing 1.00 1.25 Rotary Sand or Gravel.. 1.25 1.50 Traveling Water Intake... 1.00 1.25 SCREW CONVEYORS Uniform. 1.00 1.25 Heavy Duty or Feeder 1.25 1.50 SCUM BREAKERS (Sewage) 1.25 1.50 SEWAGE DISPOSAL See Table 2 SHAKER CONVEYORS.. 1.75 2.00 SHEETERS (Rubber). 1.50 SINGLE ACTING PUMP I or 2 Cylinders..Refer to Factory 3 or more Cylinders. 1.25 1.50 SKI TOWS & LIFTS Not Approved SKIP HOIST.. 1.25 1.50 SLAB PUSHERS. 1.25 1.50 SLITTERS (Metal) 1.25 1.50 SLUDGE COLLECTORS (Sewage).. 1.00 1.25 SOAPERS (Textile).. 1.25 1.50 SPINNERS (Textile).. 1.25 1.50 STEERING GEARS Refer to Factory STOKERS. 1.00 1.25 STONE CRUSHERS. 1.75 2.00 SUGAR INDUSTRY.. SeeTable 2 TABLE CONVEYORS (Non-Reversing) Group Drives.. 1.25 1.50 Individual Drives. 1.75 2.00 Reversing Refer to Factory TENTER FRAMES (Textile) 1.25 1.50 TEXTILE INDUSTRY. See Table 2 THICKENERS (Sewage). 1.25 1.50 TUMBLING BARRELS 1.75 2.00 VACUUM FILTERS (Sewage) 1.25 1.50 VANE BLOWERS 1.00 1.25 WINCHES (Dredges) 1.25 1.50 WINDERS (Textile). 1.25 1.50 WINDLASS. Refer to Factory WIRE Drawing Machines.. 1.25 1.50 Winding Machines.. 1.25 1.50 Selection of Falk products for applications whose primary purpose is the transportation of people is not approved. This includes such application as freight or passenger elevators, escalators, man lifts, work lift platforms and ski tows and ski lifts. If the primary purpose of the application is material conveyance and occasionally people are transported, the Rexnord warranty may remain in effect provided the design load conditions are not exceeded and certification to the appropriate safety codes and load conditions have been obtained by the system designer or end user from the appropriate enforcement authorities. DRY DOCK CRANES (Hammerhead, Rotating and Whirler, Stationary or Moving), for ANY DURATION OF SERVICE: Main Hoist, Auxiliary Hoist, Boom (Luffing): 1.00; Rotating (Swing or Slew): 1.25; Tracking (Drive Wheel): 1.50. Refer to Factory for proper selection of a Falk RAM mixer drive. Rexnord Industries, LLC, 1968, 2007. (241-110) 7

Type GHB1/Horsepower Ratings s 1.50 through 5.06 Single Reduction 1750 through 100 1750 14 1170 870 720 580 ±3% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 1.50 1170 127 186 205 388 765 1.84 950 1 195 224 411 691 1127 2.25 780 91.5 162 210 367 598 996 1569 2.76 640 77.4 110 169 3 474 799 1276 2405 3.38 520 70.5 111 145 250 415 664 1027 2059 4.13 420 50.5 78.5 111 189 357 605 946 1767 5.06 350 47.4 74.7 104 178 8 488 752 14 1.50 950 110 152 168 317 664 1105 1.84 780 112 159 183 336 600 978 1540 2.25 640 74.8 134 182 318 519 865 1362 2549 2.76 520 63.9 90.8 145 263 412 693 1108 2088 3.38 420 61.2 96.5 126 217 354 577 892 1787 4.13 350 41.5 64.6 91.5 156 3 525 822 1534 5.06 0 40.1 61.5 90.7 155 236 424 653 1193 1.50 780 95.7 125 137 259 577 960 1520 1.84 640 97.6 1 150 275 521 850 1338 2500 2.25 520 61.2 111 155 277 431 752 1183 2215 2.76 420 52.7 74.9 120 223 353 602 963 1814 3.38 350 53.2 83.9 109 189 9 501 775 1508 4.13 0 34.2 53.2 75.4 1 239 456 714 1333 5.06 2 33.0 50.5 78.6 132 193 368 567 994 1.50 580 77.8 92.7 102 193 443 780 1235 1838 1.84 470 79.3 96.8 111 204 389 691 1087 1859 2.25 390 45.5 83.6 115 210 321 611 962 1800 2.76 320 39.5 55.7 90.0 168 262 490 782 1474 3.38 260 40.0 65.0 88.9 143 215 402 6 1122 4.13 210 25.6 39.8 56.5 96.6 178 371 580 1002 5.06 175 24.6 37.8 58.9 98.6 143 9 461 754 1.50 480 65.2 76.7 84.5 160 366 667 1068 1521 1.84 390 65.8 80.1 92.0 169 322 593 918 1538 2.25 320 37.6 69.6 95.2 174 265 535 842 1565 2.76 260 32.8 46.1 74.9 140 217 4 685 16 3.38 210 33.3 53.8 75.4 119 178 332 552 9 4.13 175 21.2 33.1 47.0 80.3 147 310 508 8 5.06 140 20.4 31.4 48.9 82.0 119 250 404 6 1.50 390 52.9 61.8 68.1 1 5 537 861 1225 1.84 320 53.0 64.6 74.1 136 259 478 739 1239 2.25 260.3 56.4 76.7 140 214 454 724 1260 2.76 210 26.6 37.1 60.6 114 175 366 589 1036 3.38 175 26.9 43.3 60.7 96.4 144 268 474 748 4.13 140 17.1 26.7 38.0 65.0 119 250 437 668 5.06 115 16.5 25.3 39.5 66.3 95.6 202 347 512 1.50 66 9.13 10.7 11.7 22.2 50.9 92.6 148 211 1.84 54 9.14 11.1 12.8 23.5 44.7 82.4 127 214 2.25 45 5.23 9.91 13.2 24.2 36.9 78.2 133 217 100 2.76 36 4.64 6.40 10.5 20.0.1 63.2 108 179 3.38 4.69 7.47 10.5 16.6 24.7 46.2 112 1 4.13 24 2.98 4.65 6.63 11.4 20.5 43.1 89.8 115 5.06 20 2.87 4.41 6.81 11.6 16.5 34.8 69.6 91.0 Mechanical hp ratings shown in bold face type exceed the drive thermal ratings. Check required hp (without service factor) against thermal hp ratings on Page 27. For ratings at speeds higher than 1750, contact Factory. 8 (241-110) Rexnord Industries, LLC, 1968, 2007.

Type GHB1/Torque Ratings s 1.50 through 5.06 Single Reduction 1750 through 100 (POUND-INCHES AT LOW SPEED SHAFT MULTIPLY VALUES LISTED BELOW BY 1000) 1750 14 1170 870 720 580 ±3% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 1.50 1170 6.77 9.92 10.9 20.7 40.8 1.84 950 8.40 12.9 15.0 27.2 46.4 74.7 2.25 780 7.45 13.2 17.1.9 48.7 81.1 1 2.76 640 7.62 10.9 16.8.8 47.2 79.5 126 238 3.38 520 8.39 13.2 17.3.3 50.3 80.2 124 250 4.13 420 7.40 11.5 16.3 27.7 52.3 88.7 139 263 5.06 350 8.67 13.7 19.0 32.6 52.4 89.3 138 262 1.50 950 7.18 9.92 11.0 20.7 43.3 72.1 1.84 780 8.93 12.9 15.0 27.2 49.3 79.3 126 2.25 640 7.45 13.3 18.1 31.7 51.7 86.2 136 254 2.76 520 7.69 11.1 17.7 31.7 50.2 84.4 134 253 3.38 420 8.92 14.1 18.4 32.2 52.5 85.3 132 265 4.13 350 7.44 11.6 16.4.0 52.6 94.2 147 279 5.06 0 8.98 13.8 20.3 34.7 52.6 95.0 146 267 1.50 780 7.63 9.97 10.9 20.7 46.0 76.6 121 1.84 640 9.51 12.9 15.1 27.2 52.3 84.2 133 251 2.25 520 7.45 13.5 18.9 33.7 52.5 91.5 144 270 2.76 420 7.76 11.2 17.9 32.8 52.6 89.6 142 269 3.38 350 9.48 14.9 19.4 34.3 52.4 90.6 140 274 4.13 0 7.50 11.7 16.5.3 52.4 100 157 7 5.06 2 9.03 13.8 21.5 36.1 52.6 101 155 272 1.50 580 8.35 9.94 10.9 20.7 47.5 83.7 132 197 1.84 470 10.4 12.9 15.0 27.2 52.5 921 146 251 2.25 390 7.45 13.7 18.8 34.4 52.6 100 151 5 2.76 320 7.82 11.2 18.0 33.3 52.5 98.1 155 4 3.38 260 9.58 15.6 21.3 34.9 52.4 97.7 153 274 4.13 210 7.55 11.7 16.7.5 52.5 109 171 0 5.06 175 9.06 13.9 21.7 36.3 52.4 110 170 278 1.50 480 8.45 9.94 11.0 20.7 47.4 86.5 138 197 1.84 390 10.4 12.9 15.0 27.2 52.5 95.5 149 251 2.25 320 7.44 13.8 18.8 34.4 52.4 106 167 310 2.76 260 7.84 11.2 18.1 33.5 52.5 104 164 9 3.38 210 9.64 15.6 21.8 35.1 52.5 97.5 162 274 4.13 175 7.55 11.8 16.7.6 52.4 110 181 0 5.06 140 9.07 14.0 21.8 36.5 52.7 111 180 0 1.50 390 8.51 9.94 11.0 20.8 47.5 86.4 139 197 1.84 320 10.4 12.9 15.0 27.2 52.4 95.5 149 251 2.25 260 7.44 13.9 18.8 34.4 52.6 111 178 9 2.76 210 7.90 11.1 18.2 33.8 52.6 110 175 9 3.38 175 9.66 15.6 21.8 35.3 52.7 97.7 173 274 4.13 140 7.56 11.8 16.8.7 52.6 111 193 0 5.06 115 9.11 14.0 21.8 36.6 52.5 112 192 3 1.50 66 8.52 9.99 10.9 20.7 47.5 86.4 138 197 1.84 54 10.4 12.9 15.0 27.2 52.5 95.5 148 251 2.25 45 7.45 14.1 18.8 34.5 52.6 111 189 9 100 2.76 36 7.99 11.1 18.3 34.4 52.4 110 186 310 3.38 9.77 15.6 21.9 35.2 52.4 97.7 237 274 4.13 24 7.64 11.9 17.0.2 52.6 111 2 9 5.06 20 9.19 14.1 21.8 37.1 52.6 111 223 1 Torque ratings shown in bold face type exceed the drive thermal ratings. Convert required torque (without service factor) to hp and check against thermal hp ratings on Page 27. For ratings at speeds higher than 1750, contact Factory; below 580, use torques for 580. Rexnord Industries, LLC, 1968, 2007. (241-110) 9

Type YB2/Horsepower Ratings s 5.06 through 31.39 Double Reduction 1750 through 1170 1750 14 1170 4% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 5.06 350 1 195 224 379 407 678 691 877 982 1006 1127 1688 1891 5.60 310 1 180 224 321 387 618 690 815 913 1008 11 1490 1669 6.20 0 127 184 224 342 407 678 691 877 982 1006 1127 1688 1891 6.86 255 120 170 224 317 407 515 647 697 781 991 1110 10 1445 7.59 2 112 164 221 3 407 620 691 841 942 1006 1127 1581 1771 8.40 210 99.1 138 192 271 379 583 690 875 980 1008 11 1481 1659 9. 190 78.9 137 184 255 348 488 638 799 895 949 1063 1344 1505 10. 170 78.5 114 162 227 321 438 570 705 790 936 1048 1238 1387 11.39 155 76.2 110 153 217 5 4 481 584 654 768 860 1069 1197 2124 2379 12.61 140 67.2 105 134 192 272 403 438 607 680 788 882 1063 1190 1400 1567 2326 2605 13.95 125 54.7 98.2 1 186 223 346 443 554 620 646 723 967 1083 1136 1272 1958 2193 15.44 115 54.4 78.5 113 160 227 310 406 504 564 664 743 893 1000 1011 1132 1420 1590 17.09 100 50.5 78.5 106 157 185 8 342 416 466 544 609 769 861 966 1082 1242 1391 18.91 90 46.0 65.4 95.9 135 189 1 347 419 470 562 6 769 862 860 963 18 1464 20.93 84 38.1 58.9 88.7 132 157 246 8 382 4 459 514 669 749 812 909 1106 1239 23.16 75 37.9 51.2 75.3 111 158 221 9 356 399 475 532 623 698 846 947 1114 1247 25.63 68 31.1 46.0 72.5 92.6 1 200 243 4 3 388 435 546 611 688 770 943 1056.36 60 26.9 36.9 59.5 81.0 113 182 221 262 3 348 390 476 533 611 684 841 942 31.39 56 24.2 34.3 53.5 73.0 99.1 148 172 225 252 4 340 385 431 566 634 765 857 Refer to YB3 Tables on Page 14 for Selections 5.06 0 112 159 183 3 332 588 600 762 853 873 978 1466 1508 1538 1540 2523 26 5.60 255 112 149 183 266 322 514 599 678 759 874 980 1242 1334 1509 1541 2260 2531 6.20 2 105 159 183 7 332 588 600 762 853 873 978 1466 1534 1538 1540 2064 2312 6.86 210 99.4 148 183 275 332 4 537 579 649 824 924 1074 1203 1509 1541 1957 2192 7.59 190 93.0 138 183 263 332 515 600 699 783 873 978 1373 1480 1538 1540 1827 2046 8.40 170 81.9 115 161 241 318 485 595 727 814 873 979 17 1441 1509 1541 2160 2421 9. 155 66.0 115 153 222 2 411 5 663 743 788 883 1141 1278 1375 1540 1821 2039 10. 140 65.6 94.4 134 204 270 368 480 595 666 789 885 1048 1173 1509 1541 1835 2055 11.39 125 63.0 90.8 126 189 248 355 405 492 551 647 725 902 1010 1133 1269 1548 1734 1768 1980 2471 2767 12.61 115 55.5 89.8 111 174 2 334 368 504 564 663 743 922 1033 1181 1323 1413 1582 2020 2262 1894 2121 13.95 100 45.6 82.0 107 159 187 0 367 459 514 543 608 802 898 957 1072 18 1442 1700 1904 2141 2398 2768 3100 15.44 90 45.3 64.6 93.5 134 190 260 3 422 473 558 625 748 837 852 954 1198 1342 17.09 18.91 84 75 41.5 37.9 64.6 54.0 87.5 79.1 134 113 155 156 247 232 7 7 349 347 391 389 456 465 511 521 646 638 724 714 813 723 911 810 1079 1208 1135 1271 20.93 23.16 68 60 31.7 31.5 49.0 42.6 73.9 62.1 110 92.2 131 131 203 184 255 242 316 8 354 334 385 397 431 445 554 516 620 578 682 714 764 799 961 967 1076 1082 25.63 56 25.8 38.3 60.3 77.1 107 165 203 246 275 325 364 457 512 576 645 819 917.36 50 22.4.7 49.5 67.3 94.1 151 185 219 245 1 326 398 446 512 573 705 790 31.39 45 20.1.5 44.4 60.7 82.4 123 143 188 210 254 4 321 360 473 5 641 718 Refer to YB3 Tables on Page 14 for Selections 5.06 2 97.6 1 150 275 272 511 521 662 741 759 850 1274 1311 1336 1338 2107 2360 2555 62 33 3727 5.60 210 97.5 124 150 221 267 427 521 564 632 760 851 1035 1159 1313 1339 1886 2112 14 21 74 3212 6.20 190 87.0 1 150 258 272 511 521 662 741 759 850 1274 1332 1336 1338 1722 19 2446 2739 38 3705 6.86 170 82.3 127 150 239 272 355 447 482 540 687 769 895 1002 1313 1339 1632 18 2221 2488 2798 54 7.59 155 76.9 116 150 227 272 427 521 581 651 759 850 1172 1249 15 18 1522 1705 2091 2342 41 34 8.40 140 67.8 94.8 133 210 268 403 494 604 676 727 814 1099 1231 1313 1339 1878 2103 2674 2725 2500 2550 9. 125 55.2 96.3 126 189 245 345 439 551 617 655 734 956 1071 1195 1338 1582 1772 2050 26 2561 68 10. 115 54.9 78.1 111 159 226 310 403 500 561 666 746 884 990 16 1322 1595 1786 2032 21 2257 22 11.39 100 52.0 74.9 104 160 207 4 340 414 464 546 611 761 852 956 1071 1346 1507 1471 1647 2096 2348 12.61 90 45.8 74.9 91.6 135 191 277 9 417 467 558 625 763 858 997 1116 1193 1336 1924 1966 18 1844 13.95 84 38.0 68.4 88.1 133 156 242 4 380 426 456 511 665 745 807 904 1087 1217 1477 1654 1861 2084 2405 2694 15.44 75 37.7 53.2 77.3 112 159 217 6 355 397 469 525 621 695 717 803 1010 1131 17.09 68 34.2 53.2 72.2 112 1 204 240 2 327 383 4 543 608 684 766 919 10 18.91 20.93 23.16 60 56 50 31.3 26.3 26.1 44.5 40.8 35.4 65.3 61.5 51.2 94.0 90.4 76.7 1 109 109 192 168 154 237 211 202 8 262 249 322 3 279 395 322 333 442 361 373 5 458 427 592 513 478 607 572 598 680 641 670 973 835 813 1090 935 910 Refer to YB3 Tables on Page 14 for Selections 25.63 45 21.4 31.8 50.2 64.1 89.0 136 170 205 2 271 4 382 4 482 540 704 788.36 40 18.5 25.5 41.1 56.0 78.3 126 154 182 204 244 273 333 373 4 479 591 662 31.39 37 16.6 23.6 36.9 50.4 68.5 102 119 157 176 213 238 269 1 396 443 537 601 Mechanical hp ratings shown in bold face type exceed the drive thermal ratings. Check required hp (without service factor) against thermal hp ratings on Page 26, then refer to Page tor Falk cooling fans. For ratings at speeds higher than 1750, Contact Factory, below 580, reduce hp rating proportionately. Selection Example - HORSEPOWER METHOD A draw bench operating 10 hours per day with speeds varying from 1 to 185 is powered by a 125 hp, 1170/1750 variable speed, constant hp, electric motor. Select a gear drive for the coupling connected application. 1. Service Factor is 1.25 for a draw bench drive operating 10 hours per daypage 7, Table 3. 2. Equivalent hp = 1.25 X 125 = 156Page 6, How to Select. 3. Required ratio = 1170 1 = 9.0Closest standard AGMA ratio is 9.Double Reduction Selection Table above. 4. Drive size is 2080YB2 Double Reduction Selection Table above. (Cont d. on next page) 10 (241-110) Rexnord Industries, LLC, 1968, 2007.

Type YB2/Torque Ratings s 5.06 through 31.39 Double Reduction 1750 through 1170 1750 14 1170 4% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 5.06 350 23.2 36.1 41.7 69.3 75.4 125 132 162 181 185 207 311 348 5.60 310 25.8 36.1 46.1 65.6 79.8 125 143 166 186 202 226 6 343 6.20 0.5 41.2 50.6 75.2 94.9 152 157 195 218 2 256 382 4 6.86 255.5 42.7 54.9 76.6 99.7 1 163 172 193 250 0 321 360 7.59 2.6 44.1 60.7 81.3 115 173 195 233 261 274 7 444 497 8.40 210.4 40.7 59.0 82.4 114 173 213 268 0 4 340 453 507 9. 190 27.1 45.2 61.3 84.1 120 164 220 262 3 317 355 462 517 10. 170.3 41.3 60.4 84.7 117 160 213 255 6 339 379 456 511 11.39 155 31.4 44.4 62.4 86.5 123 179 205 247 277 319 357 445 498 855 958 12.61 140.1 47.3 61.1 86.6 120 178 197 277 310 352 394 482 539 617 690 1054 1181 13.95 125.3 47.4 62.9 91.4 113 174 227 270 2 3 369 491 550 579 649 994 1113 15.44 115.6 43.6 61.6 89.2 123 169 225 271 4 361 404 485 543 558 625 799 894 17.09 100 31.0 46.7 63.6 93.3 115 183 216 262 3 339 380 472 5 596 668 745 834 18.91 90.7 42.7 64.1 90.8 124 183 234 4 318 372 416 515 578 575 644 889 995 20.93 84.4 44.3 64.1 97.9 118 182 232 278 311 347 389 504 565 614 688 831 931 23.16 75.7 41.1 63.1 93.2 1 177 236 5 320 381 427 504 565 675 755 931 1042 25.63 68.4 41.0 65.4 87.3 120 184 226 275 8 357 400 498 558 631 707 871 975.36 60 27.3 36.7 60.6 83.6 117 181 217 263 5 346 387 466 522 607 680 875 980 31.39 56 26.7 37.9 59.4 83.2 113 169 196 245 274 325 364 439 492 649 727 848 950 Refer to YB3 Tables on Page 15 for Selections 5.06 0 24.6 36.0 41.7 73.6 75.2 132 140 171 192 196 220 3 339 340 341 562 6 5.60 255 27.5 36.6 46.0 66.5 81.3 127 152 170 190 214 242 313 335 379 387 579 649 6.20 2.8 43.6 50.6 79.9 94.8 161 167 206 231 243 272 406 425 426 427 581 651 6.86 210.0 45.5 54.9 81.4 99.5 131 166 176 197 254 5 3 367 448 458 599 671 7.59 190 31.1 45.4 61.5 86.4 115 176 207 238 266 1 326 471 508 509 510 612 685 8.40 170.7 41.5 60.5 89.6 117 176 224 273 5 322 361 483 540 563 574 810 908 9. 155 27.7 46.5 62.4 89.6 123 170 224 266 8 322 361 479 537 566 634 754 844 10. 140.9 41.8 61.1 93.2 120 164 219 264 5 350 393 472 5 665 679 834 934 11.39 125 31.8 44.9 62.8 92.2 126 181 211 254 5 3 368 459 514 579 649 779 872 871 975 1201 1345 12.61 115.4 49.6 61.9 96.2 123 181 202 1 314 362 405 510 571 636 712 800 896 1116 1250 1047 1172 13.95 100.9 48.5 63.9 95.6 116 179 2 274 7 339 380 498 558 597 669 777 870 1055 1182 1315 1473 1687 1889 15.44 90.2 43.9 62.4 91.2 126 173 223 278 312 371 416 496 555 576 645 825 924 17.09 18.91 84 75 31.2.9 47.0 43.1 64.3 64.7 97.4 93.0 118 125 186 185 222 236 269 8 1 322 348 377 390 422 486 522 544 584 614 592 688 663 791 943 886 1056 20.93 23.16 68 60.9 31.2 45.1 41.8 65.3 63.7 99.8 94.7 121 131 184 181 236 241 0 3 314 3 356 390 399 437 512 512 573 573 632 692 708 774 883 989 989 1107 25.63 56.8 41.7 66.6 89.0 123 186 231 1 315 365 409 512 573 647 725 926 1037.36 50 27.8 37.4 61.7 85.0 119 184 222 270 2 354 396 478 535 622 697 898 1006 31.39 45 27.2 38.5 60.3 84.7 115 172 200 250 0 333 373 449 503 664 744 870 974 Refer to YB3 Tables on Page 15 for Selections 5.06 2 26.2 36.0 41.7 75.2 75.3 141 149 182 204 208 233 350 360 361 362 573 642 699 783 902 1010 5.60 210.2 37.2 46.1 67.6 82.4 1 162 172 193 337 255 318 356 402 410 591 662 886 920 923 997 6.20 190.2 43.5 50.7 84.8 94.9 171 177 219 245 258 9 431 451 452 453 593 664 840 941 1121 1255 6.86 170.3 47.7 55.0 86.5 99.6 133 169 179 200 259 0 333 373 475 485 611 684 849 951 1081 1103 7.59 155 31.4 46.6 61.6 91.1 115 178 220 241 270 310 347 492 524 525 526 622 697 856 959 1204 1349 8.40 140.1 41.8 61.1 95.5 120 179 227 276 9 327 366 502 562 595 607 862 963 12 1253 1667 1190 9. 125.3 47.5 62.8 93.2 126 174 227 271 3 3 367 491 550 601 673 801 897 1059 1186 1325 1484 10. 115.6 42.3 61.9 88.8 123 169 225 272 5 361 404 488 546 698 712 886 962 1113 1167 1247 1272 11.39 100 32.1 45.2 63.4 95.4 1 183 217 263 4 338 379 473 5 597 669 827 926 886 992 1246 1395 12.61 90.7 50.5 62.4 91.2 126 184 207 4 318 371 416 517 581 657 735 825 924 11 13 1236 1246 13.95 84.5 49.4 64.3 97.8 118 182 233 278 311 348 390 504 565 616 690 801 897 1121 1255 1396 1564 1791 2006 15.44 75.7 44.2 63.0 93.2 1 177 237 5 321 382 4 505 566 592 663 850 952 17.09 68 31.4 47.3 64.8 99.5 120 187 227 275 8 357 400 499 559 631 707 824 923 18.91 20.93 23.16 60 56 50 31.2.4 31.6 43.4 45.9 42.5 65.3 66.5 64.2 94.6 100 96.3 126 123 133 187 186 185 239 238 246 1 4 8 326 318 334 390 365 399 437 409 447 532 517 517 596 579 579 607 648 711 680 726 796 989 938 1024 1108 1050 1147 (POUND-INCHES AT LOW SPEED SHAFT MULTIPLY VALUES LISTED BELOW BY 1000) Refer to YB3 Tables on Page 15 for Selections 25.63 45.2 42.4 67.7 90.4 125 187 237 8 322 373 418 522 585 663 742 972 1089.36 40.1 37.9 62.6 86.5 121 188 226 274 7 362 405 488 547 637 713 920 10 31.39 37 27.4 39.0 61.3 86.0 117 174 203 256 7 341 382 459 514 679 760 889 996 Torque ratings shown in bold face type exceed the drive thermal ratings. Convert required torque (without service factor) to hp and refer to Page 26 for thermal hp ratings and Page for Falk cooling fans. For ratings at speeds higher than 1750, contact Factory; below 580, use torques for 580. (Cont d. from preceding page) In the 1170 high speed shaft section opposite 9. ratio and 125, trace right to 189 (nearest hp exceeding equivalent hp) and then read drive size 2080YB2 at top of column. When making a constant hp selection, always use the combination of horsepower and slowest speed that will give the greatest torque at the low speed shaft of the drive. 5. The 134 thermal hp at 1170 is satisfactory since it exceeds the actual 125 hp load. The thermal hp of 70.0 is insufficient at 1750 for the 125 constant hp motor. To improve the thermal rating at 1750, use a fan as instructed on Page. Multiply the 70.0 thermal hp rating by 2. The resulting 140 thermal hp will be satisfactory. 6. There is no overhung load since the drive is coupling connected. Contact Factory for coupling Selection Guides for coupling selections. Rexnord Industries, LLC, 1968, 2007. (241-110) 11

Type YB2/Horsepower Ratings s 5.06 through 31.39 Double Reduction 870 through 580 870 720 580 4% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 5.06 175 79.3 96.8 111 204 202 415 423 538 602 617 691 10 1062 1084 1087 1611 1804 1958 2193 2475 2772 2716 42 5.60 155 74.9 93.7 111 168 202 325 423 4 481 617 692 789 884 1066 1088 1441 1614 2016 2193 2183 2611 3122 3497 6.20 140 65.7 96.8 111 204 202 399 423 538 602 617 691 10 1062 1074 1087 1315 1473 1869 2093 2475 2772 2716 42 6.86 1 62.2 97.3 111 194 202 270 339 366 410 522 585 681 763 1066 1088 1246 1395 1696 1899 2274 2319 82 32 7.59 115 58.1 88.8 111 175 202 324 404 441 494 606 679 892 951 988 989 1161 10 1596 1787 2246 2516 2711 36 8.40 105 51.2 71.6 101 147 202 5 374 458 513 552 618 836 936 1066 1088 1495 1674 2108 2131 2031 2072 3122 3497 9. 95 42.2 73.8 95.4 146 189 267 333 418 468 497 557 727 814 909 1018 16 1440 1620 1814 2081 2331 2669 89 10. 85 42.0 58.9 83.7 122 174 239 311 388 434 516 578 678 759 1007 10 1268 1420 1522 1662 1834 1871 2526 11.39 77 39.2 55.7 78.8 123 159 222 262 320 358 421 472 589 660 742 831 1093 1224 1119 1253 1596 1787 2101 2353 12.61 70 34.5 56.6 69.1 103 147 209 238 316 354 431 483 580 650 772 865 926 1037 1525 1537 1338 1499 1906 2135 13.95 62.9 52.2 66.4 101 120 183 2 8 322 352 394 504 565 624 699 843 944 1166 16 1512 1693 1954 2189 15.44 55.7 39.8 58.2 85.3 122 167 219 273 6 361 404 470 526 554 621 781 875 17.09 50 25.6 39.8 54.4 84.2 98.9 154 184 224 251 5 3 418 468 5 591 711 796 18.91 45 23.5 33.5 49.2 71.7 96.6 145 179 217 243 4 340 399 447 468 524 727 814 20.93 23.16 42 38 20.0 19.8 31.0 26.6 46.8 38.5 68.0 58.4 83.2 83.4 127 117 159 154 197 191 221 214 247 255 277 6 346 322 388 361 440 460 493 515 651 598 7 670 25.63 34 16.3 24.1 38.1 48.7 67.8 103 1 157 176 208 233 3 3 371 415 541 606.36 31 14.0 19.3 31.2 42.5 59.6 95.8 118 139 156 187 209 255 6 3 368 454 508 31.39 12.6 17.9.0 38.3 52.1 77.9 91.1 120 134 163 182 205 2 3 339 412 461 Refer to YB3 Tables on Page 14 for Selections 5.06 140 65.7 80.1 92.0 169 167 348 355 453 507 550 582 851 880 907 918 1355 1518 1621 1815 2048 24 2379 2665 5.60 1 62.6 78.4 92.0 140 167 272 334 361 404 537 601 663 742 900 918 1212 1357 1621 1815 2042 27 2717 43 6.20 115 54.9 80.1 92.0 169 167 334 355 453 507 550 582 851 880 900 918 1105 1238 1571 1760 2048 24 2379 2665 6.86 105 52.0 80.1 92.0 168 167 226 4 7 344 438 490 571 640 898 916 1046 1172 1426 1597 1991 2031 2425 2716 7.59 95 48.5 74.9 92.0 148 167 271 338 370 414 509 570 748 790 8 8 975 1092 1341 1502 1888 2115 20 2554 8.40 85 42.7 59.8 84.0 124 167 255 313 384 4 463 518 701 785 900 918 1273 1426 1872 1891 1778 1815 2711 36 9. 77 35.5 62.1 79.7 123 159 224 279 350 392 417 467 609 682 763 854 1105 1238 1379 1545 1810 2027 2338 2619 10. 70 35.3 49.2 69.9 103 147 202 263 3 368 438 490 568 636 856 873 1071 1200 1263 1415 1607 1639 2154 2413 11.39 62 32.7 46.1 65.7 103 134 186 221 271 3 357 400 499 559 6 705 935 1047 938 1051 1339 1500 1790 2005 12.61 55.8 47.2 57.7 86.8 124 175 201 264 6 364 408 486 544 654 733 786 880 13 16 1171 1312 1623 1818 13.95 50 24.3 43.8 55.4 84.2 101 153 192 241 270 7 333 421 472 5 592 715 801 989 1108 14 1438 1713 1918 15.44 45 24.1 33.1 48.5 71.7 102 141 185 2 258 4 341 393 440 469 525 662 741 17.09 42 21.2 33.1 45.3 70.2 83.2 1 155 189 212 248 278 354 396 446 500 602 674 18.91 20.93 23.16 38 34 31 19.6 16.7 16.5 27.9 26.0 22.2 41.0 39.3 32.1 60.2 56.7 49.0 80.3 69.8 70.0 121 106 98.4 149 133 1 181 165 161 203 185 180 256 208 215 7 233 241 334 9 270 374 324 2 396 371 388 443 416 435 608 550 500 681 616 560 25.63 13.6 20.2 31.9 40.8 56.8 85.6 109 132 148 175 196 246 276 313 350 456 511.36 25 11.7 16.2 26.1 35.6 49.9 79.9 98.7 117 131 156 175 215 241 277 310 382 4 31.39 22 10.5 15.0 23.4 32.1 43.6 65.4 76.4 101 113 137 153 173 194 255 6 347 389 Refer to YB3 Tables on Page 14 for Selections 5.06 115 52.9 64.6 74.1 136 135 2 7 364 408 444 469 686 709 7 739 1112 1245 15 1462 1650 1848 2045 20 5.60 105 50.9 63.8 74.1 114 135 222 273 5 3 440 492 542 607 724 739 993 1112 15 1462 1650 1848 2189 2451 6.20 95 44.7 64.6 74.1 136 135 273 7 364 408 444 469 686 709 724 739 905 1014 18 1442 1650 1848 2045 20 6.86 85 42.3 64.6 74.1 139 135 184 232 251 1 358 401 467 523 724 739 857 960 1168 18 1559 1746 1988 2227 7.59 77 39.5 61.6 74.1 122 135 221 274 2 338 415 465 612 652 676 679 798 894 1098 12 1547 1733 1870 2094 8.40 70 34.7 48.7 68.4 102 135 208 256 313 351 378 423 572 641 724 739 1049 1175 1410 1462 1532 1561 2189 2451 9. 62.1 51.0 64.8 100 131 182 227 6 320 340 381 497 557 622 697 918 10 1146 13 1485 1663 1977 2214 10. 55.9 39.9 56.8 84.7 121 166 217 271 3 362 405 463 519 709 723 876 981 1048 1174 1381 1409 1792 2007 11.39 50 26.5 37.1 53.4 83.6 109 151 182 223 250 5 3 413 462 521 583 774 867 767 859 1095 1226 1488 1666 12.61 45 23.3 38.3 46.8 71.2 102 142 166 215 241 1 337 396 444 541 606 650 7 1070 1080 1007 11 1347 1509 13.95 42 19.9 35.8 45.0 68.4 82.6 124 156 196 220 245 274 344 385 437 489 591 662 819 917 1049 1175 1434 1606 15.44 38 19.6 26.7 39.4 58.7 82.8 115 152 189 212 251 1 321 359 387 433 546 612 17.09 34 17.1 26.7 36.8 57.0 68.1 104 127 155 174 204 2 1 326 368 412 496 556 18.91 20.93 23.16 31 25 15.9 13.6 13.3 22.6 21.2 18.0 33.2 32.1 26.0 49.2 46.0 40.0 65.0 57.1 57.2 98.1 85.7 79.9 121 108 106 147 134 132 165 150 148 211 171 176 236 192 197 271 236 219 4 264 245 326 5 319 365 342 357 496 453 407 555 507 456 Refer to YB3 Tables on Page 14 for Selections 25.63 22 11.1 16.5 26.0 33.3 46.4 69.5 89.0 108 121 143 160 203 227 256 7 375 420.36 21 9.57 13.2 21.3.1 40.8 64.8 80.8 95.5 107 1 144 176 197 227 254 314 352 31.39 18 8.57 12.2 19.1 26.1 35.6 53.4 62.5 82.2 92.1 111 124 142 159 209 234 5 319 Mechanical hp ratings shown in bold face type exceed the drive thermal ratings. Check required hp (without service factor) against thermal hp ratings on Page 26 and then refer to Page for Falk cooling fans. For ratings at speeds higher than 1750, contact Factory; below 580, reduce hp rating proportionately. 12 (241-110) Rexnord Industries, LLC, 1968, 2007.

Type YB2/Torque Ratings s 5.06 through 31.39 Double Reduction 870 through 580 (POUND-INCHES AT LOW SPEED SHAFT MULTIPLY VALUES LISTED BELOW BY 1000) 870 720 580 4% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 5.06 175.7 36.0 41.5 75.0 75.2 154 162 199 223 2 255 380 393 394 395 589 660 721 807 902 1010 1016 1138 5.60 155.2 37.8 45.9 69.1 83.8 132 166 176 197 249 279 326 365 439 448 608 681 852 927 911 1089 1320 1479 6.20 140.6 43.6 50.5 90.2 94.8 180 194 239 268 2 316 468 484 489 495 609 682 863 967 1127 1262 1223 1370 6.86 1.8 49.1 54.7 94.4 99.5 136 172 182 204 265 7 341 382 521 531 627 702 871 976 1184 1207 1488 1667 7.59 115 31.9 48.0 61.3 94.5 115 182 2 246 275 332 372 504 537 538 539 638 715 879 984 1238 1386 1502 1682 8.40 105.5 42.5 62.4 89.9 122 182 232 2 316 334 374 516 578 652 665 921 1033 12 1316 1267 12 1947 2181 9. 95.1 49.0 64.0 96.9 131 181 231 276 9 334 374 502 562 615 689 875 980 1125 1260 1448 1622 1842 2063 10. 85.4 42.9 62.7 91.6 127 175 233 2 316 376 421 502 562 731 746 948 1061 1123 1226 1361 1388 1865 2089 11.39 12.61 13.95 15.44 17.09 18.91 20.93 23.16 25.63.36 31.39 77 70 62 55 50 45 42 38 34 31 32.5 31.1.1 31.4 31.6 31.5 31.1 32.3.9.6.0 45.2 51.4 50.7 44.5 47.6 44.0 46.9 42.9 43.2 38.6 39.8 64.6 63.3 65.1 63.8 65.7 66.1 68.0 64.9 69.1 63.9 62.5 98.7 93.5 99.8 95.5 101 97.0 101 98.6 92.4 88.3 87.8 133 1 122 133 124 127 126 137 1 124 119 186 186 185 183 190 190 189 189 191 192 179 225 215 237 244 234 242 241 253 242 233 209 272 9 2 6 4 6 8 8 6 2 262 5 324 316 332 318 331 323 345 331 316 3 352 387 361 395 370 404 377 412 384 372 350 394 433 404 442 414 452 422 461 4 417 392 493 5 515 514 516 540 526 525 538 504 471 552 591 577 576 578 605 589 588 603 564 5 623 684 640 616 655 6 671 734 685 657 698 698 766 717 690 734 705 751 822 767 736 782 903 862 836 884 857 994 983 1005 1005 949 918 1011 965 936 990 906 1386 1190 1015 1397 1333 1275 1216 1526 14 1363 1709 1771 1717 1957 960 1112 1101 1126 Refer to YB3 Tables on 1126 1063 10 Page 15 for Selections 5.06 140.7 36.0 41.6 75.1 75.2 156 165 203 227 246 260 380 393 398 403 599 671 721 807 902 1010 1076 1205 5.60 1.5 38.3 46.0 69.6 83.7 133 168 179 200 262 4 331 371 446 455 618 692 8 9 10 1153 1392 1597 6.20 115.9 43.6 50.5 90.3 94.7 182 197 244 273 5 322 468 484 495 505 618 692 877 982 1127 1262 16 1451 6.86 105 31.1 48.9 54.8 98.7 99.4 138 174 185 207 269 1 346 388 5 539 637 713 886 992 1254 10 1511 1692 7.59 95 32.2 48.9 61.4 96.6 115 184 232 249 279 338 378 510 544 545 546 648 726 893 1000 1256 1407 1526 1709 8.40 85.8 42.8 62.7 91.6 122 184 234 6 320 338 379 521 584 667 680 947 1061 1401 1415 1346 1374 2045 21 9. 77.6 49.8 64.6 98.6 133 183 234 279 312 338 379 508 569 623 698 909 1018 1157 16 1521 1704 1951 2185 10. 70.9 43.3 63.3 93.5 1 179 239 9 324 386 432 509 570 749 764 967 1083 1127 1262 1442 1471 1922 2153 11.39 12.61 13.95 62 55 50 32.8 31.3.6 45.2 51.8 51.4 65.1 63.9 65.7 99.8 95.3 101 135 133 124 189 188 187 2 219 239 278 2 6 15.44 45 31.9 44.7 64.3 97.0 134 187 249 2 338 403 451 520 582 6 705 905 1014 17.09 42 31.6 47.8 66.1 101 126 191 238 9 324 376 421 5 591 670 750 877 982 18.91 38 31.8 44.2 66.6 98.4 1 192 244 8 334 412 461 546 612 643 720 1004 1124 20.93 34 31.3 47.5 69.0 102 1 191 244 1 326 383 4 5 594 684 766 1004 1125 23.16 31 32.5 43.3 65.4 100 139 192 258 313 351 420 470 531 595 749 839 1015 1137 311 327 320 361 395 369 404 442 413 504 534 520 565 598 582 639 701 655 716 785 734 933 884 857 1045 990 960 918 1421 1220 10 1436 1366 13 15 1566 1448 1440 1754 1823 1766 2072 Refer to YB3 Tables on Page 15 for Selections 25.63.2 43.7 69.9 93.5 1 192 247 1 337 391 438 547 613 697 781 1024 1147.36 25.9 39.2 64.6 89.4 125 193 235 6 320 377 422 513 574 669 749 966 1082 31.39 22.2 40.3 63.1 89.0 121 181 212 267 9 356 399 480 538 712 797 936 1048 5.06 115.7 36.1 41.6 75.0 75.4 156 165 203 227 246 260 380 393 398 403 610 683 721 807 902 1010 1147 15 5.60 105.8 38.7 46.0 70.3 84.0 135 171 181 203 267 8 336 376 447 456 6 703 8 9 10 1153 1387 1553 6.20 95.2 43.7 50.5 90.2 95.0 185 197 244 273 5 322 468 484 495 505 6 704 892 999 1127 1262 1381 1547 6.86 85 31.4 48.9 54.8 101 99.7 139 176 188 210 272 5 351 393 5 541 647 725 900 1008 1219 1365 1538 1722 7.59 77 32.5 49.9 61.4 98.8 115 186 233 253 3 341 382 518 552 553 555 659 738 907 1016 1278 1431 1554 1740 8.40 70 31.0 43.3 63.4 93.5 122 186 238 9 324 343 384 5 592 664 678 972 1089 1310 1358 1441 1468 2050 24 9. 62.1 50.8 65.2 99.5 136 185 237 3 317 343 384 515 577 631 707 938 1050 1193 1336 1550 1736 2047 23 10. 55 31.4 43.6 63.9 95.4 133 183 244 6 331 396 443 515 577 772 787 982 1100 1161 10 1537 1568 1985 2223 11.39 50 33.0 45.2 65.7 101 137 190 234 5 319 369 413 517 579 656 735 960 1075 931 1043 1312 1469 1881 2107 12.61 45 31.5 52.1 64.4 97.0 135 190 225 6 331 404 453 541 606 719 805 907 1016 1462 1080 1374 1538 1820 2038 13.95 42 31.1 52.2 66.2 101 126 188 241 9 324 377 422 526 589 672 753 879 984 1254 1404 1588 1779 2154 2413 15.44 38 32.2 44.7 64.8 98.5 135 189 254 8 345 413 462 527 590 645 722 9 1039 17.09 34 31.7 47.9 66.6 102 1 193 242 5 3 385 431 539 604 686 768 898 1006 18.91 20.93 23.16 31 25 32.0 31.7 32.5 44.5 48.1 43.5 66.9 70.0 65.7 99.8 103 101 1 1 141 193 192 193 246 246 261 1 3 320 337 3 358 421 392 426 471 439 477 551 537 535 617 601 599 657 698 763 736 782 854 1016 1026 1026 1138 1149 1149 Refer to YB3 Tables on Page 15 for Selections 25.63 22.6 44.3 70.8 94.8 132 193 250 5 342 396 443 559 626 710 795 1046 1171.36 21.3 39.6 65.4 90.7 127 195 239 0 325 385 431 521 583 680 762 987 1105 31.39 18.6 40.6 64.0 89.8 122 184 215 271 3 358 401 488 547 723 810 953 1067 Torque ratings shown in bold face type exceed the drive thermal ratings. Convert required torque (without service factor) to hp and refer to Page 26 for thermal hp ratings and Page for Falk cooling fans. For ratings at speeds higher than 1750, contact Factory; below 580, use torques for 580. 1984 1923 2192 2042 1978 2321 Rexnord Industries, LLC, 1968, 2007. (241-110) 13

Type YB3/Horsepower Ratings s 15.44 through 31.39 Triple Reduction 1750 through 580 1750 14 1170 870 720 4% L.S. 15.44 115 15 1714 17.09 100 15 1714 18.91 90 15 1714 20.93 84 1447 1621 23.16 75 1444 1617 25.63 68 1208 1353.36 60 1076 1205 31.39 56 1024 1147 DRIVE SIZE 2170 2175 2180 2185 2190 2195 15.44 90 1259 1410 1924 2155 2452 2501 17.09 84 1259 1410 1924 2155 2208 2253 18.91 75 1259 1410 1857 2080 2452 2501 20.93 68 1206 1351 1654 1853 2063 2105 23.16 60 1206 1351 1527 1710 2087 2337 25.63 56 1015 1137 1337 1497 1734 1942.36 50 904 1012 1113 1247 1571 1760 31.39 45 852 954 1145 12 1554 1741 15.44 75 10 1154 1606 1799 21 2173 17.09 68 10 1154 1606 1799 1919 1958 18.91 60 10 1154 1542 1727 1940 2173 20.93 56 1005 1126 1373 1538 1633 18 23.16 50 1005 1126 1267 1419 1754 1965 25.63 45 853 955 1123 1258 1459 1634.36 40 758 849 935 1047 1321 1480 31.39 37 709 794 948 1062 18 1443 15.44 55 766 858 12 1376 1577 1766 17.09 50 766 858 12 1376 1421 1591 18.91 45 766 858 1171 1311 1577 1766 20.93 42 766 858 1040 1165 1327 1486 23.16 38 766 858 960 1075 1473 1649 25.63 34 656 735 851 953 1126 1261,36 31 583 653 720 806 1020 1142 31.39 539 604 717 803 974 1091 15.44 45 634 710 1033 1157 1347 1508 17.09 42 634 710 1033 1157 1245 1394 18.91 38 634 710 979 1097 1347 1508 20.93 34 634 710 871 975 1163 12 23.16 31 634 710 804 900 1113 1247 25.63 554 621 712 797 953 1067.36 25 492 551 608 681 862 965 31.39 22 453 507 599 671 814 912 15.44 38 511 572 847 949 1111 1244 17.09 34 511 572 847 949 1070 1198 18.91 31 511 572 799 895 1107 1239 580 20.93 511 572 710 795 990 1109 23.16 25 511 572 654 733 908 1017 25.63 22 456 511 579 649 786 880.36 21 404 453 500 560 710 795 31.39 18 370 414 488 546 663 742 Mechanical hp ratings shown in bold face type exceed the drive thermal ratings. Check required hp (without service factor) against thermal hp ratings on Page 27 and then refer to Page for Falk cooling fans. For ratings at speeds higher than 1750, contact Factory; below 580, reduce hp rating proportionately. Selection Example TORQUE METHOD A main hoist requires 34,200 pound-inches torque at its input shaft which operates at 13. The hoist is in service 10 hours per day and is driven by a coupling connected 7½ hp, 1170 electric motor. Select a gear drive for the application. 1. Service Factor is 1.00 for a main hoist operating 10 hours per daypage 7, Table 3 under Cranes, Main Hoist. 2. Equivalent torque = 34,200 x 1.00 = 34,200 lb-in. Page 6. 3. Required ratio = 1170 13 = 90 Closest standard AGMA ratio is 86.50 Page 17, Triple Reduction Selection Table. (Cont d. on next page) 14 (241-110) Rexnord Industries, LLC, 1968, 2007.

Type YB3/Torque Ratings s 15.44 through 31.39 Triple Reduction 1750 through 580 1750 14 1170 870 720 4% L.S. 15.44 115 846 947 17.09 100 948 1062 18.91 90 1008 11 20.93 84 1106 1239 23.16 75 1173 1314 25.63 68 1108 1241.36 60 1068 1196 31.39 56 1178 1319 DRIVE SIZE (POUND-INCHES AT LOW SPEED SHAFT... MULTIPLY VALUES LISTED BELOW BY 1000) 2170 2175 2180 2185 2190 2195 15.44 90 851 953 14 1460 1650 1683 17.09 84 54 1069 1447 1621 1642 1676 18.91 75 1014 1136 1489 1668 1950 1989 20.93 68 11 1264 1538 1722 1892 19 23.16 60 1200 1344 1513 1694 2048 23 25.63 56 1139 1276 1488 1667 1942 2175.36 50 1098 12 1398 1566 1880 2106 31.39 45 1198 1342 1579 1769 2176 2437 15.44 75 851 953 13 1489 1752 1787 17.09 68 954 1069 1477 1654 1744 1780 18.91 60 1015 1137 1512 1693 1886 2113 20.93 56 1150 18 1559 1746 18 2050 23.16 50 1222 1369 1534 1718 2101 2354 25.63 45 1170 1310 15 1713 1997 2237.36 40 1126 1261 1435 1607 1932 2164 31.39 37 1219 1365 1599 1791 2204 2468 15.44 55 851 953 1368 1532 1743 1952 17.09 50 954 1069 1519 1701 1737 1945 18.91 45 1015 1137 1543 17 2061 28 20.93 42 1179 1320 1588 1779 2000 2240 23.16 38 1253 1403 1563 1750 2373 2657 25.63 34 1211 1356 1558 1745 2072 2321.36 31 1164 14 1485 1663 2005 2246 31.39 1247 1397 1626 1821 2241 2510 15.44 45 851 953 1390 1557 1798 2013 17.09 42 954 1069 1544 17 1839 2060 18.91 38 1014 1136 1560 1747 2127 2381 20.93 34 1178 1319 1606 1799 2117 2371 23.16 31 1252 1402 1581 1771 2169 24 25.63 1236 1384 1574 1763 2119 2373.36 25 1182 13 1516 1698 2047 23 31.39 22 1265 1417 1642 1839 2263 2535 15.44 38 851 953 1415 1585 1842 2041 17.09 34 954 1069 1571 1760 1962 2197 18.91 31 1015 1137 1580 1770 2173 2432 580 20.93 1179 1320 1626 1821 2238 2507 23.16 25 1253 1403 1598 1790 2196 2460 25.63 22 1263 1414 1591 1782 2170 24.36 21 1212 1357 1548 1734 2094 2345 31.39 18 12 1436 1658 1857 26 2560 Torque ratings shown in bold face type exceed the drive thermal ratings. Convert required torque (without service factor) to hp and check against thermal hp ratings on Page 27 and then refer to Page for Falk cooling fans. For ratings at speeds higher than I 750, contact Factory; below 580, use torques for 580 Cont d. from preceding page) 4. Drive size is 2050YB3 -.. Triple Reduction Selection Table above. In the 1170 high speed shaft section opposite 86.50 ratio and 13.5, trace right to 34.8 (x 1000), the nearest torque exceeding equivalent torque, and then read drive size 2050YB3 at top of the column 5. The thermal capacity is satisfactory since the torque rating is not shown in bold face type. 6. There is no overhung load since the drive is coupling connected. Refer to Factory coupling selection guides for coupling selections. Rexnord Industries, LLC, 1968, 2007. (241-110) 15

Type YB3/Horsepower Ratings s 34.74 through 194.6 Triple Reduction 1750 through 1170 1750 14 4% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 34.74 50 25.4 34.3 51.6 78.6 111 159 198 216 224 345 386 407 410 498 558 676 690 841 942 1153 11 1449 1623 38.44 45 22.8.9 53.4 72.2 92.9 136 181 193 205 0 325 349 391 451 505 555 622 789 884 1042 1167 15 1462 42.54 40 21.4.3 43.0 63.1 81.7 127 163 183 205 259 0 335 375 510 571 674 680 839 940 1041 1166 1395 1562 47.08 37 19.5.0 43.8 61.4 75.3 110 147 183 205 239 268 321 359 411 460 555 622 701 785 932 1044 1180 1322 52.11 34 17.2 24.4 35.0 54.7 75.0 103 137 163 183 211 236 277 310 431 483 556 568 716 802 860 963 1154 12 57.66 15.6 24.1 36.7 48.9 63.8 90.5 123 148 166 198 222 269 1 346 388 461 516 584 654 713 799 1002 1122 63.82 27 14.4 19.4.1 47.1 56.0 84.4 115 133 149 173 194 233 261 355 398 420 470 571 640 708 793 963 1079 70.62 25 13.0 18.7.2 41.6 51.5 78.7 102 125 140 167 187 227 254 6 320 380 426 491 550 621 695 783 877 78.16 22 11.5 16.5 23.8 37.9 51.6 73.4 98.2 110 123 145 162 193 216 9 335 355 398 454 508 590 661 769 861 86.50 20 10.5 16.4 25.2 34.5 44.4 63.6 86.7 104 116 133 149 189 212 240 269 322 361 422 473 533 597 716 802 95.73 18 9.62 12.7 19.8.5 39.0 58.5 81.5 92.9 104 114 1 160 179 248 278 5 0 5 8 486 521 532 543 105.9 16.5 8.51 12.7 18.5.2 35.8 51.2 71.4 87.7 98.2 112 125 154 173 197 221 265 7 369 413 438 491 576 645 117.2 15 7.87 11.0 16.1 25.4 31.4 47.8 66.7 77.9 87.2 101 113 131 147 207 232 247 277 4 3 388 434 538 603 1.7 13.5 7.26 11.0 17.3 22.7.5 43.5 57.9 69.6 78.0 92.0 103 1 145 168 188 226 253 9 324 356 399 497 557 143.6 12 6.60 8.68 13.4 19.8 26.8 38.5 48.1 64.7 72.5 82.7 92.6 108 121 161 180 202 226 263 5 3 367 454 509 158.9 11.0 5.88 8.55 12.6 17.7 23.4 35.0 46.3 58.5 65.5 74.6 83.6 107 120 138 154 186 208 232 260 8 322 406 455 175.9 10 5.07 6.83 9.24 15.4 20.4 32.7 39.3 52.0 58.2 65.2 73.0 90.2 101 121 136 149 167 219 245 265 7 367 411 194.6 9.0 4.54 6.31 8.85 13.8 18.0.2 37.6 47.8 53.5 62.4 69.9 76.0 85.1 106 119 133 149 180 202 234 262 4 340 34.74 40 20.9.8 42.5 64.7 91.3 131 167 175 183 3 317 325 332 412 461 535 599 699 783 959 1074 1258 1409 38.44 37 18.9 26.8 44.3 59.4 77.1 112 151 150 168 242 271 6 332 372 417 482 540 685 767 904 1013 1133 1269 42.54 34 17.6 24.1 35.4 51.9 67.8 104 136 150 168 213 239 277 310 425 476 507 568 694 777 862 965 1154 12 47.08 16.1 23.2 36.3 50.5 62.4 90.9 122 150 168 199 223 267 9 342 383 479 537 586 656 771 863 988 1106 52.11 27 14.1 20.0.8 45.6 61.7 84.8 115 134 150 174 195 2 257 359 402 422 473 592 663 711 796 954 1068 57.66 25 12.9 19.9.3 40.2 52.8 74.5 102 123 138 164 184 223 250 8 323 384 4 492 551 602 674 870 974 63.82 22 11.9 15.9 23.9 38.5 46.4 69.5 96.3 110 123 143 160 192 215 6 331 349 391 476 533 584 654 796 891 70.62 20 10.7 15.5 24.9 34.2 42.6 64.8 84.9 104 116 138 155 188 211 238 266 317 355 409 458 513 574 680 762 78.16 18 9.41 13.5 19.5 31.1 42.4 60.4 82.0 91.1 102 119 133 159 178 248 278 5 3 378 423 487 545 646 724 86.50 16.5 8.65 13.5 20.8.4 36.7 52.3 71.7 85.8 96.1 111 124 156 175 200 224 268 0 351 393 439 492 600 672 95.73 15 7.90 10.5 16.2 25.1 32.2 48.1 67.9 76.6 85.8 93.8 105 131 147 204 2 218 244 249 254 401 4 439 448 105.9 13.5 7.01 10.5 15.2 23.2.5 42.1 59.0 72.5 81.2 92.9 104 1 144 163 183 221 247 4 341 362 405 493 552 117.2 12 6.45 8.99 13.2 21.0 25.9 39.3 55.2 64.4 72.1 84.2 94.3 108 121 171 191 204 2 246 275 324 363 444 497 1.7 11.0 5.96 9.08 14.2 18.6 25.2 35.7 47.8 57.6 64.5 76.1 85.2 106 119 139 156 187 209 238 266 3 3 410 459 143.6 10 5.41 7.12 11.0 16.3 22.1 31.6 40.0 53.8 60.3 68.8 77.1 89.3 100 134 150 166 186 217 243 270 2 374 419 158.9 9.0 4.84 7.04 10.4 14.6 19.3.8 38.2 48.3 54.1 61.7 69.1 88.0 98.6 113 127 154 172 192 215 237 265 335 375 175.9 8.1 4.17 5.62 7.58 12.7 16.8 26.8 32.2 42.9 48.0 54.2 60.7 74.0 82.9 101 113 123 138 181 203 218 244 4 341 194.6 7.5 3.74 5.19 7.26 11.4 14.8 23.2 31.2 39.6 44.4 51.5 57.7 62.8 70.3 87.9 98.5 110 123 149 167 193 216 251 1 34.74 34 17.2 25.0 35.0 53.4 75.3 108 137 144 150 231 259 265 272 340 381 465 521 580 650 797 893 1092 1224 38.44 15.6 23.3 36.7 48.9 64.0 92.3 126 122 137 202 226 243 272 8 345 419 469 580 650 772 865 985 1103 42.54 27 14.5 19.8.1 42.8 56.3 86.1 114 122 137 177 198 2 256 354 397 423 474 573 642 713 798 955 1070 47.08 25 13.2 19.2.0 41.6 51.7 74.9 102 122 137 165 185 222 249 5 319 397 445 489 548 637 713 826 925 52.11 22 11.6 16.5 23.7 37.5 50.8 69.8 96.3 110 123 143 160 189 212 9 335 353 395 489 548 588 658 788 883 57.66 20 10.6 16.4 25.1 33.1 43.8 61.4 84.9 102 114 137 153 186 208 240 269 320 358 413 463 507 568 719 805 63.82 18 9.76 13.1 19.7 31.5 38.4 57.2 80.4 91.1 102 118 132 158 177 245 274 0 325 396 444 482 540 657 736 70.62 16.5 8.79 12.8 20.6.1 35.3 53.3 70.3 85.8 96.1 114 1 155 174 197 221 263 5 341 382 422 473 591 662 1170 78.16 86.50 15 13.5 7.73 7.14 11.1 11.2 16.1 17.2 25.6 23.3 34.9.3 49.7 43.0 68.4 59.4 75.3 71.1 84.3 79.6 98.2 92.0 110 103 131 1 147 144 204 166 2 186 243 222 272 249 314 2 352 327 402 363 450 406 536 495 600 554 95.73 12 6.49 8.72 13.3 20.6 26.6 39.5 56.3 63.5 71.1 77.5 86.8 108 121 169 189 196 200 204 209 3 354 361 369 105.9 11.0 5.78 8.72 12.6 19.0 24.4 34.6 48.8 60.0 67.2 76.6 85.8 106 119 136 152 183 205 251 1 7 333 406 455 117.2 10 5. 7.38 10.9 17.4 21.4 32.3 45.4 53.3 59.7 70.2 78.6 89.0 99.7 140 157 167 187 205 2 268 0 366 410 1.7 9.0 4.89 7.48 11.7 15.3 20.8.4 39.5 47.6 53.3 62.9 70.5 87.4 97.9 115 1 155 174 196 219 241 270 338 378 143.6 8.1 4.44 5.85 9.03 13.4 18.2 26.0 33.2 44.8 50.2 57.2 64.1 73.7 82.6 112 125 137 153 179 200 222 249 9 346 158.9 7.5 3.99 5.80 8.58 12.0 15.9 23.6 31.6 39.9 44.7 51.0 57.1 72.4 81.1 93.8 105 127 142 159 178 195 218 276 9 175.9 6.6 3.44 4.63 6.22 10.5 13.8 22.0 26.5 35.4 39.6 45.0 50.4 60.9 68.2 83.1 93.1 102 114 150 168 179 201 252 2 194.6 6.0 3.07 4. 5.96 9.39 12.2 19.0 25.9 32.7 36.6 42.5 47.6 51.9 58.1 72.8 81.5 91.1 102 124 139 159 178 208 233 Mechanical hp ratings shown in bold face type exceed the drive thermal ratings. Check required hp (without service factor) against thermal hp ratings on Page 27 and then refer to Page for Falk cooling fans. For ratings at speeds higher than 1750, contact Factory; below 580, reduce hp rating proportionately. 16 (241-110) Rexnord Industries, LLC, 1968, 2007.

Type YB3/Torque Ratings s 34.74 through 194.6 Triple Reduction 1750 through 1170 1750 14 4% L.S. DRIVE SIZE (POUND-INCHES AT LOW SPEED SHAFT MULTIPLY VALUES LISTED BELOW BY 1000) 2050 2060 2070 2080 2090 2100 2110 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 34.74 50 31.4 40.8 64.2 99.3 138 188 238 274 5 407 456 534 538 635 711 871 889 1070 1199 1453 1627 1874 2100 38.44 45 32.6 42.4 71.5 101 132 188 249 269 6 393 440 509 570 636 712 791 886 1127 1262 1459 1634 1866 2090 42.54 40 32.2 42.8 65.0 100 1 190 247 274 7 379 424 524 587 771 863 1080 1090 1274 1427 1554 1741 2133 2388 47.08 37 33.3 45.4 72.6 102 135 189 254 7 344 403 451 566 634 719 805 969 1085 1200 1344 1600 1792 2061 28 52.11 34 31.9 44.5 65.5 103 140 192 252 7 333 383 4 527 590 787 881 1092 1116 15 1439 1573 1762 2157 2415 57.66 33.5 50.7 73.6 103 137 191 258 315 353 410 459 577 646 731 819 964 1080 1271 1424 1521 1704 2121 2376 63.82 27 32.4 43.5 65.8 106 132 193 258 2 338 387 433 535 599 802 898 1017 1139 1253 1403 1592 1783 2182 2444 70.62 25 33.7 46.5 74.6 103 139 192 262 321 359 417 467 588 658 748 838 982 1100 1251 1401 1587 1777 2024 2267 78.16 22 32.3 45.1 66.3 107 142 194 264 7 344 390 437 538 603 814 912 1036 1160 13 1437 1607 1800 2173 2432 86.50 20 34.2 51.7 75.2 104 140 192 266 324 363 423 474 596 668 757 848 1001 1121 1272 1425 1652 1850 2241 2510 95.73 18 32.9 44.8 66.7 107 135 196 269 311 348 392 439 540 605 825 924 1025 1043 1051 1098 1622 1740 1850 1889 105.9 16.5 32.8 48.0 68.0 104 142 195 270 3 368 4 480 590 661 771 864 1016 1138 1378 1543 1665 1865 2215 2481 117.2 15 32.5 45.6 66.5 106 137 197 275 313 351 417 467 546 611 8 9 1062 1189 1262 1413 1646 1844 2260 2533 1.7 13.5 34.7 52.6 76.9 105 143 196 273 333 373 436 488 607 680 779 873 1032 1156 1394 1561 1680 1882 2316 2594 143.6 12 33.1 44.2 67.2 104 138 198 251 319 357 427 478 546 611 799 895 1069 1197 1349 1511 1648 1846 2263 2535 158.9 11.0 33.3 48.4 68.9 104 133 197 276 337 377 441 494 610 683 791 886 1048 1174 1342 1503 1694 1897 2310 2587 175.9 10 31.9 43.2 57.8 99.1 126 199 247 321 360 406 455 551 617 757 848 964 1080 1369 1533 1665 1865 22 2497 194.6 9.0 31.1 44.3 59.6 98.0 123 197 266 338 379 446 499 540 605 721 807 926 1037 1227 1374 1652 1850 2090 2341 34.74 40 31.6 43.4 64.7 100 139 190 246 273 4 410 459 517 5 642 719 845 946 1087 1218 1481 1658 1991 23 38.44 37 33.1 45.0 72.6 102 134 190 254 256 7 401 449 5 593 642 719 841 942 1196 1340 1550 1736 1982 2220 42.54 34 32.4 43.1 65.5 101 1 191 252 275 8 382 4 5 594 787 881 995 1115 10 1244 1574 1763 2157 2415 47.08 33.6 46.1 73.7 103 137 191 258 8 345 410 459 577 646 733 821 1023 1146 12 1375 1619 1813 2110 2363 52.11 27 32.0 44.6 66.0 106 141 193 258 8 334 387 433 535 599 801 897 1015 1137 10 1456 1592 1783 2184 2446 57.66 25 33.9 51.2 74.3 103 138 193 262 321 359 415 465 587 657 746 835 983 1101 1312 1469 1571 1759 2254 2525 63.82 22 32.8 43.6 66.2 106 134 194 265 5 342 390 437 539 604 816 914 1036 1160 1277 14 1607 1800 2205 2470 70.62 20 33.9 47.2 75.2 104 140 194 267 325 364 423 474 597 669 761 852 1002 1122 1274 1427 1604 1796 2153 2411 78.16 18 32.4 45.1 66.5 107 142 195 270 312 349 392 439 543 608 827 926 1051 1177 17 1464 1622 1817 2236 2506 86.50 16.5 34.5 52.1 76.0 105 142 194 269 3 368 4 482 603 675 771 864 1018 1140 14 1449 1665 1865 28 2574 95.73 15 33.0 45.4 66.8 108 137 197 275 314 352 394 441 543 608 832 932 959 1074 1086 1109 1638 1757 1869 1907 105.9 13.5 33.0 48.6 68.4 105 143 196 273 332 372 437 489 602 674 781 875 1034 1158 1392 1559 1681 1883 2320 2598 117.2 12 32.6 45.6 66.7 107 138 198 279 318 356 426 477 550 616 837 937 1069 1197 11 1446 1685 1887 28 2562 1.7 11.0 34.9 53.1 77.3 105 145 197 276 338 378 441 494 610 683 792 887 1044 1169 1401 1569 1691 1894 2336 2616 143.6 10 33.2 44.4 67.5 104 139 199 256 325 364 435 487 552 618 814 912 1077 1206 1360 1523 1660 1859 20 2554 158.9 9.0 33.5 48.8 69.6 105 134 198 279 340 381 446 500 613 687 799 895 1061 1188 1358 1521 1705 1910 23 2610 175.9 8.1 32.1 43.5 58.0 100 127 200 248 325 364 413 463 554 620 770 862 975 1092 1388 1555 1674 1875 2263 2535 194.6 7.5 31.3 44.6 59.8 99.1 123 198 270 344 385 451 505 546 612 7 818 935 1047 1241 1390 1667 1867 2114 2368 34.74 34 31.8 44.5 65.1 101 140 191 247 273 5 409 458 515 5 648 726 896 1004 1104 1237 1503 1684 1932 2166 38.44 33.4 47.8 73.5 103 136 191 259 255 6 409 458 5 594 649 727 893 1000 1239 1388 1618 1812 2105 2358 42.54 27 32.6 43.3 65.8 102 132 193 258 274 7 387 433 535 599 802 898 1017 1140 11 1457 1591 1782 2185 2447 47.08 25 33.7 46.6 74.4 103 138 193 264 7 344 415 465 588 658 746 835 1037 1161 1253 1403 1635 1831 2156 2415 52.11 22 32.1 45.0 66.3 106 142 194 264 9 335 388 435 539 604 816 914 1036 1160 1313 1471 1608 1801 2206 2471 57.66 20 34.0 51.6 75.3 104 140 194 266 324 363 422 473 596 668 759 850 1000 1120 1346 1508 1617 1811 2277 2550 63.82 18 32.9 43.9 66.7 106 135 196 270 9 346 394 441 543 608 826 925 1053 1179 10 1456 1621 1816 2227 2494 70.62 16.5 34.1 47.7 76.1 104 142 195 270 3 368 427 478 602 674 772 865 1018 1140 19 1455 1614 1808 26 2560 1170 78.16 86.50 15 13.5 32.5 34.8 45.4 52.8 67.1 76.8 108 105 143 143 196 195 275 273 314 333 352 373 396 438 444 490 548 605 614 678 833 783 933 877 1058 1032 1185 1156 13 1315 1489 1473 1637 1679 1833 1881 2269 2316 2541 2594 95.73 12 33.2 46.1 67.0 108 138 198 278 318 356 397 445 546 611 839 940 1055 1076 1087 1115 1650 1768 1881 1920 105.9 11.0 33.3 49.3 69.3 105 145 197 276 337 377 440 493 607 680 794 889 1049 1175 1402 1570 1689 1892 2337 2617 117.2 10 32.7 45.8 67.3 108 139 199 0 321 360 434 486 554 620 841 942 1071 1200 1320 1478 1702 1906 26 2583 1.7 9.0 35.0 53.5 77.8 106 146 198 279 340 381 446 499 613 687 800 896 1063 1190 1410 1579 1701 1905 2351 2633 143.6 8.1 33.3 44.6 67.8 105 140 200 259 3 370 442 495 557 624 8 9 1082 1212 1368 1532 1672 1873 22 2578 158.9 7.5 33.8 49.1 70.2 105 135 198 2 344 385 451 505 617 691 807 904 1070 1198 1374 1539 1715 1921 2346 26 175.9 6.6 32.4 43.8 58.2 101 1 200 249 3 367 420 470 556 623 775 868 984 1102 1404 1573 1686 1888 28 2562 194.6 6.0 31.4 44.9 60.0 99.8 124 198 274 346 388 454 509 552 618 738 827 947 1061 1263 1414 1679 1880 2142 2399 Torque ratings shown in bold face type exceed the drive thermal ratings. Convert required torque (without service factor) to hp and refer to Page 27 for thermal hp ratings and Page for Falk cooling fans. For ratings at speeds higher than 1750, contact Fctory; below 580, use torques for 580. Rexnord Industries, LLC, 1968, 2007. (241-110) 17

Type YB3/Horsepower Ratings s 34.74through 194.6 Triple Reduction 870 through 580 870 720 4% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 34.74 25 12.9 18.6 26.3 40.1 56.6 81.2 102 107 111 172 193 198 202 256 7 360 403 441 494 606 679 853 955 38.44 22 11.8 18.6 27.8 36.7 48.6 69.3 95.5 91.1 102 154 172 187 202 232 260 340 381 441 494 583 653 788 883 42.54 21 10.8 14.9 21.8 32.1 42.6 64.7 87.8 91.1 102 133 149 171 192 271 3 323 362 433 485 538 602 721 808 47.08 18 9.89 14.5 22.7 31.2 39.2 56.2 77.1 91.1 102 126 141 169 189 217 243 2 338 373 418 480 538 632 708 52.11 17 8.70 12.4 17.7 27.9 38.1 52.4 73.8 81.3 91.1 108 121 142 159 226 253 267 9 369 413 443 496 595 666 57.66 15 8.02 12.4 19.0 24.8 33.1 46.0 64.3 77.3 86.6 104 116 140 157 183 205 244 273 317 355 390 437 542 607 63.82 14 7. 9.79 14.7 23.4.0 42.9 61.5 69.2 77.5 88.2 98.8 119 133 184 206 218 244 3 339 363 407 496 555 70.62 12.5 6.57 9.63 15.5 21.0 26.6 40.0 53.2 65.0 72.8 87.0 97.4 117 131 149 167 200 224 259 0 318 356 447 501 78.16 11 5.78 8.31 12.0 19.2 26.1 37.3 51.7 56.9 63.7 73.4 82.2 98.2 110 154 172 183 205 239 268 2 338 403 451 86.50 10 5.34 8.41 12.9 17.5 22.9 32.2 44.9 53.8 60.2 69.3 77.6 96.4 108 126 141 169 189 221 248 272 5 372 417 95.73 9.1 4.85 6.60 9.97 15.4 20.1.6 42.2 47.9 53.7 58.1 65.1 81.3 91.0 127 142 147 150 153 157 248 266 271 277 105.9 8.3 4.34 6.60 9.46 14.2 18.3 25.9 36.8 45.3 50.7 57.9 64.8 80.0 89.6 103 115 138 155 188 211 223 250 5 342 117.2 7.5 3.96 5.52 8.12 13.1 16.1 24.2 34.0 40.2 45.0 53.5 59.9 66.7 74.7 105 118 126 141 156 175 201 225 275 8 1.7 6.8 3.65 5.61 8.82 11.5 15.5 22.0.8 35.9 40.2 47.5 53.2 65.5 73.4 87.1 97.6 117 131 147 165 181 203 254 4 143.6 6.1 3.32 4.37 6.75 9.99 13.7 19.4 25.2 34.0 38.1 43.5 48.7 55.2 61.8 85.1 95.3 103 115 134 150 167 187 231 259 158.9 5.5 2.99 4.35 6.44 9.02 11.9 17.7 23.7.0 33.6 38.4 43.0 54.2 60.7 71.0 79.5 95.5 107 121 135 146 164 206 231 175.9 5.0 2.58 3.47 4.65 7.85 10.4 16.5 19.8 26.6.8 34.2 38.3 45.5 51.0 62.7 70.2 77.1 86.4 113 127 135 151 191 214 194.6 4.5 2. 3.20 4.45 7.04 9.16 14.2 19.6 24.6 27.5 32.0 35.8 39.0 43.7 54.8 61.4 68.6 76.8 93.8 105 119 133 157 176 34.74 21 10.7 15.5 21.8 33.3 47.1 67.6 84.5 88.0 92.0 143 160 163 167 214 240 2 338 370 414 509 570 713 798 38.44 18 9.85 15.5 23.2.6 40.6 57.7 80.1 75.4 84.5 1 145 156 167 194 217 8 334 370 414 487 545 658 737 42.54 17 9.02 12.4 18.2 26.7 35.7 53.8 74.1 79.0 84.5 111 124 143 160 226 253 271 3 361 404 449 503 602 674 47.08 15 8.22 12.1 19.0 25.9 32.7 46.8 64.6 75.4 84.5 105 118 141 158 182 204 252 2 314 352 401 449 532 596 52.11 14 7.23 10.3 14.7 23.1 31.7 43.6 62.1 67.3 75.4 89.3 100 119 133 188 211 223 250 7 344 370 414 496 556 57.66 12.5 6.68 10.3 15.8 20.6 27.6 38.3 53.8 64.7 72.5 87.0 97.4 117 131 154 172 204 2 264 6 325 364 452 506 63.82 11 6.07 8.14 12.2 19.4 24.2 35.7 51.2 57.9 64.9 73.5 82.3 99.1 111 154 172 182 204 254 4 3 339 413 463 70.62 10.0 5.46 8.03 13.0 17.5 22.2 33.2 44.5 54.4 60.9 72.8 81.5 97.3 109 125 140 168 188 217 243 265 7 373 418 78.16 9.1 4.80 6.90 9.98 15.9 21.7 31.0 43.0 47.6 53.3 61.1 68.4 81.8 91.6 1 143 152 170 200 224 252 2 336 376 86.50 8.3 4.43 7.00 10.8 14.5 19.0 26.8 37.5 44.9 50.3 57.9 64.9 80.4 90.0 105 118 141 158 186 208 227 254 310 347 95.73 7.5 4.02 5.51 8. 12.8 16.7 24.6 35.1 40.1 44.9 48.3 54.1 67.6 75.7 105 118 112 125 1 131 206 222 226 231 105.9 6.8 3.61 5.51 7.88 11.8 15.2 21.5.7 37.9 42.4 48.3 54.1 66.5 74.5 85.7 96.0 116 1 156 175 186 208 254 5 117.2 6.1 3. 4.58 6.74 10.9 13.4 20.1.2 33.6 37.6 44.8 50.2 55.4 62.1 87.6 98.1 104 117 132 148 167 187 2 256 1.7 5.5 3.03 4.67 7.34 9.51 12.9 18.2 24.8.9 33.5 39.6 44.3 54.5 61.0 72.8 81.5 97.3 109 122 137 151 169 211 236 143.6 5.0 2.75 3.62 5.60 8. 11.4 16.1 21.1.5 31.9 36.4 40.8 45.9 51.4 71.1 79.6 85.0 95.2 112 125 138 155 193 216 158.9 4.5 2.49 3.62 5.36 7.50 9.94 14.7 19.8 25.0.0 32.0 35.8 45.0 50.4 59.3 66.4 79.6 89.1 100 112 121 136 172 193 175.9 4.1 2.14 2.89 3.85 6.53 8.66 13.7 16.4 22.2 24.9.7 32.1 37.9 42.4 52.3 58.6 64.4 72.1 94.6 106 112 125 160 179 194.6 3.8 1.91 2.66 3.69 5.86 7.63 11.8 16.4 20.4 22.9 26.6.8 32.5 36.4 45.7 51.2 57.2 64.1 77.9 87.3 99.1 111 131 147 34.74 17 8.69 12.5 17.7 27.0 38.2 54.9 68.1 71.0 74.1 115 1 132 135 174 195 246 275 2 338 415 465 574 643 38.44 15 8.01 12.5 18.9 24.7 33.1 46.8 65.4 60.8 68.1 105 118 127 135 157 176 246 275 2 338 396 443 536 600 42.54 14 7. 10.0 14.7 21.6.1 43.6 60.8 65.0 68.1 90.2 101 116 1 183 205 220 246 3 3 365 409 489 548 47.08 12.5 6.65 9.83 15.4 21.0 26.6 37.9 52.6 60.8 68.1 86.2 96.5 114 1 149 167 204 2 257 8 326 365 437 489 52.11 11 5.85 8.31 11.9 18.6 25.7 35.3 50.4 54.3 60.8 72.8 81.5 96.4 108 153 171 181 203 249 279 0 336 404 452 57.66 10.0 5.40 8.40 12.9 16.7 22.5 31.0 43.8 52.8 59.1 71.0 79.5 94.6 106 125 140 167 187 214 240 264 6 367 411 63.82 9.1 4.90 6.58 9.91 15.6 19.7.9 41.4 47.2 52.9 59.6 66.7 80.2 89.8 124 139 147 165 207 232 246 275 336 376 70.62 8.3 4.41 6.51 10.5 14.1 18.0 26.9 36.2 44.3 49.6 59.3 66.4 78.8 88.2 102 114 137 153 178 199 215 241 3 339 580 78.16 86.50 7.5 6.8 3.88 3.58 5.58 5.68 8.07 8.76 12.9 11.7 17.6 15.4 25.1 21.7 34.8.5 38.7 36.5 43.4 40.9 49.5 47.1 55.4 52.8 66.3 65.1 74.2 72.9 104 85.6 116 95.9 123 115 138 1 163 152 183 170 204 184 2 206 272 252 5 2 95.73 6.1 3.25 4.48 6.70 10.4 13.6 19.9.4 32.6 36.5 39.1 43.8 54.7 61.3 85.2 95.4 90.2 101 103 106 168 179 183 187 105.9 5.5 2.93 4.48 6.39 9.56 12.3 17.4 25.0.7 34.4 39.3 44.0 53.8 60.3 69.7 78.1 93.8 105 127 142 151 169 206 231 117.2 5.0 2.65 3.70 5.45 8.77 10.9 16.2 22.8 27.2.5 36.7 41.1 44.9 50.3 71.0 79.5 84.6 94.7 108 121 136 152 185 207 1.7 4.5 2.45 3.78 5.95 7.68 10.4 14.8 20.1 24.3 27.2 32.1 36.0 44.0 49.3 59.2 66.3 79.1 88.6 99.1 111 122 137 171 191 143.6 4.1 2.22 2.93 4.52 6.70 9.25 13.0 17.2 23.2 26.0.7 33.3 37.1 41.6 57.5 64.4 68.8 77.1 90.2 101 113 126 156 175 158.9 3.8 2.01 2.93 4.34 6.08 8.06 11.9 16.0 20.4 22.8 25.9.0 36.4 40.8 48.1 53.9 64.4 72.1 81.6 91.4 98.2 110 139 156 175.9 3.3 1.73 2.34 3.11 5. 7.01 11.0 13.3 18.0 20.2 23.3 26.1.6 34.3 42.5 47.6 52.3 58.6 76.9 86.1 90.2 101 1 145 194.6 3.0 1.55 2.16 2.98 4.74 6.18 9.54 13.3 16.6 18.6 21.5 24.1 26.4.6 37.1 41.6 46.5 52.1 63.4 71.0 79.9 89.5 107 120 For ratings of speeds higher than 1750, contact Factory; below 580, reduce hp rating proportionately. 18 (241-110) Rexnord Industries, LLC, 1968, 2007.

Type YB3/Torque Ratings s 34.74 through 194.6 Triple Reduction 870 through 580 870 720 4% L.S. DRIVE SIZE (POUND-INCHES AT LOW SPEED SHAFT MULTIPLY VALUES LISTED BELOW BY 1000) 2050 2060 2070 2080 2090 2100 2110 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 34.74 25 32.1 44.5 65.8 102 141 193 247 273 3 410 459 518 5 656 735 945 1058 11 1265 1538 1722 2221 2486 38.44 22 34.0 51.3 74.9 104 139 193 264 255 6 419 469 549 593 658 737 975 1092 1267 1419 1642 1839 2267 2539 42.54 21 32.6 43.8 66.3 103 134 195 267 275 8 391 438 540 605 822 921 1044 1169 1321 1480 1614 1808 2219 2485 47.08 18 33.9 47.3 75.7 104 141 194 268 7 344 426 477 599 671 764 856 1059 1186 16 1440 1659 1858 2220 2486 52.11 17 32.4 45.5 66.6 106 143 196 273 8 334 395 442 544 609 8 9 1054 1181 1331 1491 16 1826 2238 2507 57.66 15 34.6 52.4 76.6 105 143 195 271 331 371 4 482 605 678 778 871 1026 1149 1388 1555 1673 1874 29 2586 63.82 14 33.1 44.1 66.9 106 137 197 278 316 354 396 443 548 614 835 935 1063 1190 1335 1495 1644 1841 2258 25 70.62 12.5 34.2 48.2 77.0 105 144 196 275 335 375 438 490 610 683 785 879 1039 1164 1327 1486 1634 18 2326 2605 78.16 11 32.7 45.7 67.3 109 144 198 279 320 358 398 446 552 618 841 942 1072 1201 1362 1525 1654 1852 24 2569 86.50 10 35.0 53.3 77.5 106 145 196 277 338 379 443 496 611 684 798 894 1054 1180 1342 1503 1697 1901 2345 2626 95.73 9.1 33.3 46.9 67.6 109 140 199 1 323 362 401 449 552 618 847 949 1066 1085 1098 1126 1667 1787 1898 1938 105.9 8.3 33.6 50.2 69.9 106 146 198 0 341 382 447 501 615 689 807 904 1067 1195 1416 1586 1705 1910 2363 2646 117.2 7.5 32.9 46.0 67.5 110 141 200 2 326 365 445 498 558 625 850 952 1087 1217 1350 1512 1717 1923 23 2609 1.7 6.8 35.1 54.0 78.9 107 146 199 3 346 387 453 507 619 693 814 912 1075 1204 14 1600 1720 1926 2375 2660 143.6 6.1 33.5 44.8 68.1 105 142 201 265 338 378 451 505 560 627 851 953 1094 1225 1380 1546 1689 1892 2317 2595 158.9 5.5 34.0 49.5 70.9 107 136 200 5 347 389 456 511 621 695 821 920 1084 1214 1402 1570 1735 1943 2359 2642 175.9 5.0 32.6 44.1 58.5 102 1 202 250 331 371 4 481 560 627 786 880 1003 1123 14 1599 1703 1907 2335 2615 194.6 4.5 31.7 45.2 60.3 101 126 199 279 350 392 460 515 558 625 748 838 960 1075 12 1436 1687 1889 2176 2437 34.74 21 32.2 44.8 65.9 102 142 194 247 272 4 411 460 515 5 663 743 951 1065 1144 11 1560 1747 2246 2514 38.44 18 34.3 51.6 75.5 104 141 194 268 255 6 426 477 554 592 663 743 1033 1157 13 1437 1656 1855 27 2561 42.54 17 32.9 44.0 66.9 103 136 196 273 8 8 394 441 544 609 8 9 1055 1182 13 1490 16 1825 2237 2505 47.08 15 34.1 47.7 76.6 104 142 196 272 8 345 4 482 605 678 775 868 1067 1195 18 1465 1672 1873 2258 25 52.11 14 32.6 45.6 66.9 106 144 197 277 8 334 394 441 549 615 835 935 1065 1193 1340 1501 1645 1842 2258 25 57.66 12.5 34.8 52.6 77.0 105 144 197 274 335 375 437 489 611 684 788 883 1040 1165 1399 1567 1684 1886 2326 2605 63.82 11 33.2 44.3 67.1 106 138 198 279 320 358 398 446 553 619 843 944 1073 1202 1352 1514 1654 1853 2276 2549 70.62 10.0 34.4 48.6 78.0 106 145 197 278 338 379 442 495 613 686 796 891 1054 1180 1343 1504 1647 1845 2346 2627 78.16 9.1 32.8 45.8 67.6 109 145 199 1 323 362 400 448 554 621 845 946 1075 1204 1375 1540 1667 1867 2310 2587 86.50 8.3 35.1 53.6 78.4 106 146 197 0 342 383 447 501 615 689 807 904 1064 1192 1360 1523 1708 1913 2357 2640 95.73 7.5 33.4 47.3 67.8 109 141 200 2 326 365 403 451 555 622 851 953 976 1093 1108 1135 1674 1801 1913 1953 105.9 6.8 33.8 50.6 70.4 106 146 199 2 345 386 451 505 618 692 814 912 1081 1211 1419 1589 1714 1920 2379 2664 117.2 6.1 33.0 46.2 67.7 110 142 201 3 3 368 450 504 561 6 854 956 1089 1220 1379 1545 1724 1931 2340 2621 1.7 5.5 35.2 54.3 79.3 107 147 199 4 348 390 455 510 621 696 821 920 1081 1211 1433 1605 17 1938 2385 2671 143.6 5.0 33.6 44.8 68.3 105 143 201 268 341 382 457 512 563 631 859 962 1095 1226 1389 1556 1692 1895 2335 2615 158.9 4.5 34.2 49.8 71.3 107 137 201 7 350 392 459 514 623 698 8 9 1091 1222 1404 1573 1738 1947 2382 2668 175.9 4.1 32.7 44.4 58.6 102 1 203 250 335 375 435 487 562 6 793 888 1012 1133 1439 1612 1704 1908 2360 2643 194.6 3.8 31.8 45.4 60.4 101 126 200 2 353 395 463 518 562 6 754 844 968 1084 18 1443 1701 1905 2196 2460 34.74 17 32.4 44.8 66.4 103 143 196 247 272 4 411 460 516 5 670 750 954 1069 1159 18 1579 1769 2240 2509 38.44 15 34.6 51.7 76.4 105 142 195 271 256 7 4 482 556 594 668 748 1056 1183 10 1456 1671 1872 2311 2588 42.54 14 33.1 44.1 67.0 104 138 197 278 4 8 398 446 548 614 835 935 1063 1191 1341 1502 1645 1842 2257 25 47.08 12.5 34.2 48.1 77.0 105 144 197 275 8 345 438 490 609 682 788 882 1076 1205 13 1488 1688 1891 20 2576 52.11 11 32.7 45.7 67.2 106 145 198 279 8 334 399 447 554 620 840 941 1074 1203 1349 1511 1656 1855 2279 2552 57.66 10.0 34.9 53.3 78.0 106 145 198 277 338 379 443 496 613 687 796 892 1054 1181 1408 1577 1700 1904 2346 2627 63.82 9.1 33.3 44.5 67.6 106 140 199 0 323 362 401 449 555 622 846 947 1078 1207 1371 1535 1666 1866 25 2570 70.62 8.3 34.5 48.9 78.2 106 146 198 0 342 383 447 501 615 689 804 901 1064 1192 1365 15 1660 1859 2361 2644 580 78.16 86.50 1.5 6.8 32.9 35.2 46.0 54.0 67.8 78.9 110 106 146 147 200 198 2 3 327 345 366 386 403 452 451 506 558 619 625 693 851 814 953 912 1083 1079 1213 1208 1395 1379 1562 1545 1680 1720 1882 1926 2327 2378 2606 2663 95.73 6.1 33.5 47.7 68.1 110 142 201 3 3 369 404 453 558 625 854 957 979 1096 1109 1141 1691 1804 1919 1962 105.9 5.5 34.0 51.1 70.9 107 147 200 5 347 389 455 510 621 696 822 921 1084 1214 14 1601 17 1937 2394 2681 117.2 5.0 33.0 46.3 67.9 110 143 201 4 331 371 457 512 563 631 859 962 1095 1226 1400 1568 1739 1948 2349 2631 1.7 4.5 35.3 54.6 79.8 107 147 201 6 351 393 459 514 623 698 8 9 1091 1222 1441 1614 1741 1950 2396 2684 143.6 4.1 33.6 45.1 68.4 106 144 202 271 346 387 463 518 565 633 863 966 1100 1232 1394 1561 1707 1912 2348 26 158.9 3.8 34.3 50.1 71.7 108 138 202 8 354 396 462 517 626 701 836 936 1096 1227 1423 1594 1746 1955 2390 2677 175.9 3.3 32.8 44.6 58.7 103 131 202 252 337 377 438 491 564 632 799 895 1021 1143 1452 1626 1709 1914 2373 2658 194.6 3.0 32.0 45.7 60.6 102 127 201 4 355 398 464 520 567 635 760 851 977 1094 11 1457 1703 1907 2226 2493 For ratings of speeds higher than 1750, contact Factory; below 580, use torques for 580. Rexnord Industries, LLC, 1968, 2007. (241-110) 19

Type YB4/Horsepower Ratings s 215.4 through 1207 Quadruple Reduction 1750 through 1170 1750 14 ±5% L.S. DRIVE SIZE 2050 2060 2070 2080 200 2100 2110 2120 2125 21 2135 215.4 8.1 4.47 6.13 9.00 13.2 18.1 26.9 33.7 41.7 46.7 59.4 66.5 238.4 7.5 4.01 6.08 8.55 11.8 15.8 23.2.4 38.2 42.8 50.6 56.7 263.8 6.6 3.65 5.08 7.33 11.8 15.5 22.8 27.8 34.6 38.7 47.3 53.0 1.9 6.0 3.37 5.18 7.97 10.4 13.6 19.7 27.3 31.6 35.4 42.2 47.3 323.1 5.4 3.06 4.03 6.08 9.05 12.0 17.7 24.6 27.9 31.2 40.0 44.8 357.5 5.0 2.76 4.01 5.81 8.18 10.4 15.3 21.9 25.5.6 34.4 38.5 395.7 4.4 2.43 3.33 4.81 7.85 10.2 15.0 19.1 23.1 25.9 32.5 36.4 437.9 4.0 2.19 3.33 4.62 6.87 8.88 12.9 18.6 21.2 23.7.7 32.1 484.6 3.6 1.98 2.76 3.92 5.99 8.00 11.7 16.5 18.8 21.0 27.1.4 536.3 3.2 1.83 2.83 4. 5.45 6.97 10.1 14.6 17.1 19.2 23.4 26.2 593.5 2.9 1.66 2.18 3.25 4.74 6.79 9.95 12.9 15.5 17.4 22.3 25.0 656.8 2.7 1.50 2.19 3.13 4.25 5.91 8.59 12.4 14.2 15.9 19.4 21.7 726.9 2.4 1. 1.85 2.68 4.10 5.27 7.78 10.3 12.6 14.1 18.3 20.5 804.5 2.2 1.22 1.90 2.95 3.74 4.59 6.72 8.66 11.5 12.9 15.8 17.7 890.3 2.0 1.11 1.46 2.22 3.25 4.47 6.59 8.66 10.4 11.7 15.2 17.0 985.3 1.8 1.01 1.47 2.15 2.91 3.89 5.69 8.27 9.55 10.7 13.0 14.6 1090 1.6.870 1.17 1.53 2.20 3.39 5.33 6.79 9.02 10.1 10.7 12.0 1207 1.5.778 1.08 1.46 2.16 2.98 4.60 5.76 7.54 8.45 9.11 10.2 215.4 6.6 3.66 5.03 7.38 10.8 14.9 22.0.3 34.1 38.2 48.7 54.6 238.4 6.0 3. 5.00 7.03 9.72 13.0 19.0 26.4 31.2 34.9 41.8 46.8 263.8 5.4 2.99 4.17 6.00 9.71 12.7 18.7 23.0.3 31.7 39.2 43.9 1.9 5.0 2.76 4.26 6.55 8.50 11.1 16.1 22.4 25.8.9 34.8 39.0 323.1 4.4 2.51 3. 4.98 7.41 9.86 14.5 20.3 22.8 25.5 32.9 36.8 357.5 4.0 2.26 3. 4.78 6.72 8.59 12.5 18.0 20.8 23.3.3 31.7 395.7 3.6 1.99 2.73 3.94 6.43 8.37 12.3 15.8 18.9 21.2 26.9.1 437.9 3.2 1.80 2.73 3.79 5.63 7. 10.6 15.3 17.2 19.3 23.5 26.3 484.6 2.9 1.62 2.26 3.21 4.91 6.57 9.63 13.5 15.4 17.2 22.2 24.9 536.3 2.7 1.49 2.32 3.52 4.47 5.72 8.31 12.0 14.0 15.7 19.1 21.4 593.5 2.4 1.36 1.79 2.66 3.89 5.57 8.15 10.6 12.7 14.2 18.4 20.6 656.8 2.2 1.23 1.80 2.57 3.49 4.85 7.04 10.2 11.6 13.0 15.9 17.8 726.9 2.0 1.06 1.51 2.19 3.36 4.32 6.37 8.41 10.3 11.5 15.0 16.8 804.5 1.8 1.00 1.56 2.42 3.07 3.76 5.50 7.11 9.38 10.5 12.9 14.5 890.3 1.6.909 1.20 1.82 2.67 3.67 5.39 7.13 8.54 9.56 12.4 13.9 985.3 1.5.8 1.21 1.76 2.39 3.19 4.66 6.79 7.79 8.73 10.7 12.0 1090 1.3.713.961 1.25 1.80 2.78 4.37 5.56 7.40 8. 8.80 9.86 1207 1.2.637.888 1.20 1.77 2.44 3.77 4.72 6.18 6.92 7.46 8.35 215.4 5.4 3.00 4.13 6.05 8.92 12.3 18.1 24.5 27.9 31.2 40.1 44.9 238.4 5.0 2.71 4.11 5.79 8.00 10.7 15.6 21.8 25.5.6 34.5 38.6 263.8 4.4 2.45 3.42 4.93 7.96 10.4 15.3 19.0 23.1 25.9 32.5 36.4 1.9 4.0 2.26 3.50 5.39 6.97 9.12 13.2 18.5 21.2 23.7.7 32.1 323.1 3.6 2.05 2.71 4.09 6.08 8.11 11.9 16.7 18.7 20.9 27.0.2 357.5 3.2 1.86 2.71 3.93 5.52 7.07 10.3 14.8 17.1 19.1 23.2 26.0 395.7 2.9 1.63 2.24 3.23 5.27 6.89 10.1 13.0 15.4 17.3 22.2 24.9 437.9 2.7 1.48 2.25 3.12 4.62 6.00 8.69 12.6 14.1 15.8 19.3 21.6 1170 484.6 536.3 2.4 2.2 1.33 1.23 1.85 1.91 2.63 2.90 4.03 3.67 5.40 4.70 7.90 6.82 11.1 9.90 12.5 11.4 14.0 12.8 18.2 15.7 20.4 17.6 593.5 2.0 1.11 1.47 2.18 3.19 4.58 6.68 8.78 10.4 11.6 15.1 16.9 656.8 1.8 1.01 1.48 2.11 2.86 3.99 5.77 8.39 9.46 10.6 13.0 14.6 726.9 1.6.872 1.24 1.80 2.75 3.55 5.23 6.89 8.41 9.42 12.3 13.8 804.5 1.5.820 1. 1.98 2.52 3.09 4.51 5.84 7.70 8.62 10.6 11.9 890.3 1.3.745.981 1.49 2.19 3.01 4.42 5.87 6.98 7.82 10.2 11.4 985.3 1.2.680.991 1.44 1.96 2.62 3.82 5.58 6.38 7.14 8.79 9.84 1090 1.0.585.787 1.02 1.48 2. 3.59 4.56 6.08 6.81 7.21 8.08 1207 1.0.523.7.981 1.45 2.01 3.09 3.88 5.06 5.67 6.11 6.84 Since thermal horsepower ratings of quadruple reduction drives exceed mechanical ratings, it is not necessary to check for thermal limitations. For speeds higher than 1750, contact Factory; below 580, reduce horsepower rating proportionately. Contact Factory for larger drive sizes. 20 (241-110) Rexnord Industries, LLC, 1968, 2007.

Type YB4/Torque Ratings s 215.4 through 1207 Quadruple Reduction 1750 through 1170 1750 14 ±5% L.S. DRIVE SIZE (POUND-INCHES AT LOW SPEED SHAFT MULTIPLY VALUES LISTED BELOW BY 1000) 2050 2060 2070 2080 200 2100 2110 2120 2125 21 2135 215.4 8.1 33.4 44.5 67.8 100 140 200 259 310 347 462 517 238.4 7.5 33.7 49.0 70.2 98.9 135 198 267 331 371 450 504 263.6 6.6 32.9 46.0 67.7 109 146 201 253 316 354 445 498 1.9 6.0 35.2 54.1 79.2 107 147 199 4 338 378 454 509 323.1 5.4 33.6 44.9 68.2 105 143 202 2 310 347 465 521 357.5 5.0 34.1 49.6 71.0 107 137 200 6 331 371 458 513 395.7 4.4 33.7 44.9 68.4 110 144 202 259 316 354 457 512 437.9 4.0 34.2 49.9 71.6 107 138 199 8 338 379 462 517 484.6 3.6 33.2 46.4 68.3 106 144 202 6 310 347 470 526 536.3 3.2 35.5 54.9 80.4 108 139 199 9 3 370 463 519 593.5 2.9 33.8 45.1 68.8 103 145 203 264 316 354 467 523 656.8 2.7 34.4 50.3 72.2 102 139 201 0 338 378 464 520 726.9 2.4 33.2 46.7 68.6 106 146 204 254 310 347 471 5 804.5 2.2 35.5 55.3 81.2 109 140 201 248 331 371 466 522 890.3 2.0 33.9 45.3 69.0 104 146 204 269 316 354 472 5 905.3 1.8 34.8 50.6 72.9 103 141 202 4 338 378 465 521 1090 1.6 33.3 45.0 59.3 86.3 134 205 254 343 384 413 462 1207 1.5 32.4 46.1 60.9 89.9 1 194 251 311 348 379 424 215.4 6.6 33.5 44.7 68.0 100 141 200 276 310 347 463 519 238.4 6.0 33.9 49.4 70.7 99.7 136 198 4 3 370 455 510 263.6 5.4 33.0 46.2 67.8 110 146 201 256 316 354 450 504 1.9 5.0 35.3 54.5 79.6 107 147 199 5 337 377 458 513 323.1 4.4 33.7 45.0 68.3 106 144 202 4 310 347 468 524 357.5 4.0 34.2 50.0 71.5 108 138 200 8 3 370 462 517 395.7 3.6 33.8 45.1 68.5 111 144 203 262 317 355 463 518 437.9 3.2 34.4 50.1 71.9 108 139 201 0 337 377 463 518 484.6 2.9 33.2 46.5 68.4 106 145 203 6 311 348 471 527 536.3 2.7 35.4 55.1 80.8 109 140 201 1 331 371 463 519 593.5 2.4 33.9 45.3 68.9 103 146 204 266 316 354 471 5 656.8 2.2 34.6 50.6 72.6 102 140 201 2 338 378 466 522 726.9 2.0 33.1 46.6 68.6 107 146 204 254 9 346 472 5 804.5 1.8 35.6 55.5 81.6 110 141 202 250 3 369 467 523 890.3 1.6 34.0 45.5 69.2 104 147 204 271 316 354 473 5 905.3 1.5 34.9 51.0 73.0 103 141 202 5 338 378 468 524 1090 1.3 33.4 45.2 59.3 86.4 134 205 254 345 386 414 464 1207 1.2 32.5 46.4 61.3 90.2 1 195 251 312 349 379 425 215.4 5.4 33.5 44.9 68.2 101 143 201 1 9 346 466 522 238.4 5.0 34.1 49.6 71.1 100 137 199 7 331 371 459 514 263.6 4.4 33.1 46.3 68.1 110 147 201 259 316 354 456 511 1.9 4.0 35.3 54.7 80.1 107 148 199 8 338 378 461 516 323.1 3.6 33.6 45.1 68.6 106 144 203 6 310 347 469 525 357.5 3.2 34.4 50.2 71.9 108 139 201 0 331 371 463 518 395.7 2.9 33.8 45.2 68.7 111 145 204 263 316 354 467 523 437.9 2.7 34.6 50.4 72.3 108 139 201 2 337 377 464 520 1170 484.6 536.3 2.4 2.2 33.4 35.7 46.6 55.5 68.5 81.3 107 109 146 140 204 201 7 3 9 3 346 369 471 465 527 521 593.5 2.0 33.8 45.5 69.0 104 146 204 269 315 353 472 5 656.8 1.8 34.7 50.9 72.8 103 141 202 4 337 377 468 524 726.9 1.6 33.3 46.8 68.9 107 147 205 254 310 347 474 531 804.5 1.5 35.7 55.7 81.6 110 141 202 251 331 371 469 525 890.3 1.3 34.0 45.5 69.3 105 147 205 273 316 354 474 531 905.3 1.2 35.0 51.1 73.0 103 142 203 7 338 378 469 525 1090 1.0 33.5 45.3 59.1 86.8 134 206 255 346 388 415 465 1207 1.0 32.6 46.5 61.2 90.3 1 195 253 312 349 380 426 Since thermal horsepower ratings of quadruple reduction drives exceed mechanical ratings, it is not necessary to check for thermal limitations. For speeds higher than 1750, contact Factory; below 580, use torques tor 580. Contact Factory for larger sizes. Rexnord Industries, LLC, 1968, 2007. (241-110) 21

Type YB4/Horsepower Ratings s 215.4 through 1207 Quadruple Reduction 870 through 580 870 720 ±5% L.S. DRIVE SIZE 2050 2060 2070 2080 200 2100 2110 2120 2125 21 2135 215.4 4.1 2.24 3.08 4.52 6.69 9.21 13.5 18.4 20.7 23.2.0 33.6 238.4 3.8 2.03 3.08 4.34 6.00 8.03 11.7 16.3 19.0 21.3 25.8.9 263.8 3.3 1.83 2.55 3.68 5.94 7.78 11.4 14.4 17.2 19.3 24.6 27.5 1.9 3.0 1.69 2.62 4.03 5.20 6.81 9.89 13.9 15.7 17.6 21.4 24.0 323.1 2.7 1.53 2.02 3.05 4.54 6.08 8.87 12.5 13.8 15.5 20.2 22.6 357.5 2.5 1.39 2.03 2.94 4.14 5. 7.66 11.1 12.7 14.2 17.3 19.4 395.7 2.2 1.21 1.67 2.41 3.93 5.16 7.51 9.83 11.5 12.9 16.7 18.7 437.9 2.0 1.10 1.68 2.33 3.44 4.49 6.48 9.41 10.5 11.8 14.4 16.1 484.6 1.8.991 1.38 1.96 3.00 4.04 5.89 8. 9. 10.4 13.7 15.3 536.3 1.6.914 1.43 2.16 2.75 3.52 5.09 7.41 8.53 9.55 11.7 13.1 593.5 1.5.8 1.09 1.63 2.39 3.42 4.98 6.60 7.72 8.65 11.3 12.6 656.8 1.3.757 1.10 1.58 2.14 2.98 4. 6. 7.05 7.90 9.73 10.9 726.9 1.2.651.924 1.34 2.05 2.65 3.90 5.14 6.26 7.01 9.20 10.3 804.5 1.1.611.956 1.48 1.88 2.31 3.36 4.37 5.72 6.41 7.90 8.85 890.3 1.0.555.731 1.11 1.63 2.25 3. 4.40 5.20 5.82 7.62 8.53 985.3.90.507.740 1.08 1.46 1.96 2.84 4.17 4.74 5.31 6.55 7.34 1090.80.437.586.763 1.10 1.70 2.68 3.40 4.54 5.09 5.38 6.03 1207.75.390.543.731 1.08 1.50 2.31 2.89 3.78 4.23 4.55 5.10 215.4 3.3 1.86 2.55 3.75 5.56 7.66 11.2 15.3 17.1 19.2 24.9 27.9 238.4 3.0 1.69 2.56 3.61 4.99 6.67 9.69 13.6 15.7 17.6 21.4 24.0 263.8 2.7 1.52 2.11 3.05 4.93 6.45 9.50 12.0 14.3 16.0 20.5 23.0 1.9 2.5 1.40 2.18 3.35 4.32 5.65 8.20 11.5 13.0 14.6 17.8 19.9 323.1 2.2 1.27 1.67 2.53 3.76 5.05 7.36 10.3 11.4 12.8 16.7 18.7 357.5 2.0 1.16 1.68 2.44 3.44 4.40 6.35 9.23 10.5 11.8 14.4 16.1 395.7 1.8 1.01 1.38 2.00 3.26 4. 6.23 8.19 9.55 10.7 13.8 15.5 431.9 1.6.917 1.39 1.93 2.85 3.73 5.37 7.82 8.70 9.74 12.0 13.4 484.6 1.5.821 1.14 1.62 2.49 3.35 4.88 6.87 7.71 8.64 11.3 12.7 536.3 1.3.757 1.18 1.80 2. 2.92 4.22 6.15 7.06 7.91 9.73 10.9 593.5 1.2.687.905 1.35 1.98 2.84 4.13 5.49 6.39 7.16 9.38 10.5 656.8 1.1.6.915 1.31 1.78 2.47 3.57 5.21 5.84 6.54 8.04 9.01 726.9 1.0.540.766 1.11 1.70 2.20 3.23 4.26 5.18 5.80 7.62 8.53 804.5.90.506.792 1.23 1.56 1.92 2.79 3.63 4.74 5.31 6.55 7.34 890.3.80.460.606.920 1.36 1.87 2.73 3.66 4. 4.81 6.31 7.07 985.3.75.421.614.895 1.21 1.62 2.36 3.46 3.93 4.40 5.43 6.08 1090.65.362.486.632.912 1.41 2.22 2.82 3.77 4.22 4.46 4.99 1207.60.323.451.606.898 1.24 1.92 2.40 3.13 3.50 3.78 4.23 215.4 2.7 1.50 2.06 3.03 4.50 6.21 9.06 12.4 13.8 15.5 20.1 22.5 238.4 2.5 1.36 2.07 2.92 4.04 5.40 7.83 11.0 12.7 14.2 17.3 19.4 263.8 2.2 1.22 1.71 2.46 3.98 5.21 7.67 9.76 11.5 12.9 16.7 18.7 1.9 2.0 1.13 1.76 2.71 3.48 4.56 6.63 9.34 10.4 11.7 14.4 16.1 323.1 1.8 1.03 1.35 2.04 3.04 4.09 5.94 8.35 9.20 10.3 13.5 15.1 357.5 1.6.934 1.36 1.97 2.78 3.56 5.13 7.47 8.46 9.47 11.6 13.0 395.7 1.5.812 1.12 1.61 2.63 3.46 5.03 6.65 7.67 8.59 11.2 12.5 437.9 1.3.741 1.13 1.56 2. 3.02 4.34 6.33 7.00 7.84 9.64 10.8 580 484.6 536.3 1.2 1.1.662.611.924.956 1.31 1.45 2.01 1.84 2.71 2.36 3.94 3.40 5.54 4.98 6.21 5.69 6.96 6.37 9.11 7.85 10.2 8.79 593.5 1.0.554.7 1.09 1.60 2. 3.33 4.45 5.15 5.77 7.54 8.45 656.8.90.507.739 1.06 1.43 2.00 2.88 4.22 4.71 5.27 6.49 7.27 726.9.80.436.618.895 1.37 1.78 2.61 3.44 4.17 4.67 6.15 6.89 804.5.75.408.639.993 1.26 1.55 2.25 2.93 3.82 4. 5. 5.92 890.3.65.371.488.742 1.10 1.51 2.20 2.97 3.46 3.88 5.09 5.70 985.3.60.340.495.722.982 1.31 1.90 2.79 3.16 3.54 4.38 4.91 1090.50.2.392.510.736 1.14 1.80 2.27 3.04 3.41 3.60 4.03 1207.50.261.364.488.725 1.00 1.55 1.93 2.53 2.83 3.04 3.41 Since thermal horsepower ratings of quadruple reduction drives exceed mechanical ratings, it is not necessary to check for thermal limitations. For speed higher than 1750, contact Factory; below 580, reduce horsepower rating proportionately. Contact Factory for larger sizes. 22 (241-110) Rexnord Industries, LLC, 1968, 2007.

Type YB4/Torque Ratings s 215.4 through 1207 Quadruple Reduction 870 through 580 870 720 ±5% L.S. DRIVE SIZE (POUND-INCHES AT LOW SPEED SHAFT MULTIPLY VALUES LISTED BELOW BY 1000) 2050 2060 2070 2080 2090 2100 2110 2120 2125 21 2135 215.4 4.1 33.7 45.0 68.5 102 144 202 5 9 346 469 525 238.4 3.8 34.4 50.0 71.7 101 138 200 8 331 371 462 517 263.8 3.3 33.2 46.5 68.3 111 147 202 264 317 355 463 519 1.9 3.0 35.5 55.1 80.5 108 148 200 1 338 378 463 519 323.1 2.7 33.8 45.3 68.8 106 145 203 8 9 346 472 5 357.5 2.5 34.6 50.5 72.3 109 140 201 2 331 371 464 520 395.7 2.2 33.8 45.3 68.9 111 146 204 268 317 355 472 5 437.9 2.0 34.6 50.6 72.6 108 140 201 3 338 379 465 521 484.6 1.8 33.4 46.7 68.7 107 147 204 8 9 346 475 532 536.3 1.6 35.7 55.8 81.5 110 141 202 5 331 371 466 522 593.5 1.5 34.0 45.4 69.4 104 147 204 272 316 354 474 531 656.8 1.3 35.0 50.8 73.3 103 141 202 6 338 378 470 526 726.9 1.2 33.4 46.9 69.0 107 148 205 255 310 347 476 533 804.5 1.1 35.8 56.0 82.0 110 142 203 252 331 371 469 525 890.3 1.0 34.1 45.6 69.4 105 148 206 275 317 355 477 534 985.3.90 35.1 51.3 73.6 104 143 203 8 338 378 470 526 1090.80 33.6 45.3 59.5 86.8 135 207 256 348 390 417 467 1207.75 32.7 46.6 61.3 90.4 131 196 253 313 350 381 427 215.4 3.3 33.8 45.0 68.6 103 144 202 6 9 346 471 527 238.4 3.0 34.6 50.2 72.1 102 139 201 0 331 371 463 519 263.8 2.7 33.3 46.5 68.4 111 148 203 265 317 355 469 525 1.9 2.5 35.6 55.4 80.9 108 149 201 1 338 379 464 520 323.1 2.2 33.9 45.2 68.9 106 146 204 7 9 346 471 5 357.5 2.0 34.9 50.5 72.5 109 140 202 3 332 372 465 521 395.7 1.8 34.1 45.2 69.1 111 146 204 270 318 356 473 5 437.9 1.6 34.8 50.6 72.7 108 141 202 4 338 378 468 524 484.6 1.5 33.5 46.6 68.6 107 147 204 9 310 347 477 534 536.3 1.3 35.7 55.7 82.0 110 141 203 6 331 371 469 525 593.5 1.2 34.0 45.5 69.4 105 147 205 273 316 354 477 534 656.8 1.1 35.0 51.1 73.5 104 142 203 7 338 378 469 525 726.9 1.0 33.5 47.0 69.0 107 148 205 255 310 347 477 534 804.5.90 35.8 56.0 82.3 111 143 203 253 331 371 470 526 890.3.80 34.1 45.7 69.5 106 149 206 277 316 354 478 535 985.3.75 35.2 51.4 73.7 104 142 204 9 338 378 471 527 1090.65 33.7 45.4 59.5 86.9 135 207 256 348 390 417 467 1207.60 32.7 46.8 61.4 90.8 131 197 254 313 350 382 4 215.4 2.7 33.8 45.1 68.9 103 145 203 8 310 347 471 527 238.4 2.5 34.5 50.4 72.4 102 140 201 2 331 371 465 521 263.8 2.2 33.2 46.7 68.5 111 148 204 268 318 356 473 5 1.9 2.0 35.6 55.5 81.2 108 149 202 3 337 377 467 523 323.1 1.8 34.1 45.4 69.0 107 147 204 8 8 345 473 5 357.5 1.6 34.8 50.8 72.7 110 141 202 5 331 371 466 522 395.7 1.5 34.0 45.6 69.0 112 147 205 272 316 354 473 5 437.9 1.3 34.9 51.1 73.0 108 142 202 6 338 378 469 525 580 484.6 536.3 1.2 1.1 33.5 35.8 46.9 56.0 68.8 82.0 107 110 148 142 205 203 9 7 310 331 347 371 475 469 532 525 593.5 1.0 34.1 45.6 69.6 105 148 205 275 317 355 477 534 656.8.90 35.1 51.2 73.8 104 142 203 8 338 378 470 526 726.9.80 33.6 47.0 69.1 107 149 206 256 310 347 478 535 804.5.75 35.8 56.1 82.5 111 143 203 254 331 371 471 527 890.3.65 34.2 45.7 69.6 106 149 206 279 317 355 478 535 985.3.60 35.3 51.4 73.8 104 143 203 9 338 378 471 5 1090.50 33.7 45.5 59.6 87.1 136 209 256 349 391 418 468 1207.50 32.8 46.9 61.4 91.0 131 198 254 313 351 382 4 Since thermal horsepower ratings of quadruple reduction drives exceed mechanical ratings, it is not necessary to check for thermal limitations. For speeds higher than 750, contact Factory; below 580, use torques tor 580. Contact Factory for larger sizes. Rexnord Industries, LLC, 1968, 2007. (241-110) 23

Type GHB1Exact s Single Reduction DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 1.50 1.481 1.481 1.481 1.481 1.481 1.481 1.481 1.484 1.84 1.810 1.840 1.864 1.840 1.864 1.840 1.852 1.862 2.25 2.261 2.261 2.261 2.261 2.261 2.261 2.261 2.261 2.76 2.733 2.765 2.765 2.733 2.765 2.765 2.737 2.750 3.38 3.8 3.8 3.8 3.368 3.368 3.357 3.357 3.368 4.13 4.071 4.071 4.071 4.071 4.071 4.071 4.071 4.133 5.06 5.083 5.083 5.083 5.083 5.059 5.083 5.083 5.083 Except where noted with an asterisk ( ), exact ratios are within ±3% of the nominal ratios. Type YB2Exact s Double Reduction(Triple Reduction Where Screened) 2050 2060 2070 2080 2090 2100 2110 DRIVE SIZE 5.06 4.992 5.139 5.167 5.078 5.144 5.109 5.0 5.122 5.099 5.107 5.021 5.049 5.082 5.034 5.165 5.60 5.563 5.577 5.711 5.678 5.731 5.603 5.764 5.670 5.562 5.707 5.691 5.824 5.846 5.761 5.836 6.20 6.225 6.221 6.278 6.105 6.478 6.222 6.323 6.152 6.317 6.3 6.7 6.390 6.378 6.9 6.221 6.86 6.845 6.973 6.806 6.716 6.802 6.958 7.001 6.878 7.012 6.922 6.739 6.949 7.096 7.192 7.120 7.59 7.583 7.462 7.632 7.457 7.869 7.760 7.843 7.701 7.572 7.793 7.520 7.595 7.608 7.605 7.649 8.40 8.233 8.188 8.533 8.442 8.332 8.241 8.556 8.499 8.357 8.502 8.444 8.501 8.549 8.653 8.623 9. 9.5 9.169 9.259 9.162 9.546 9.362 9.598 9.108 9.4 9.537 9.340 9.399 9.590 9.610 9.533 10. 10.01 10.06 10.35 10.37 10.11 10.13 10.37 10.06 10.07 10.23 10.02 10.32 10.19 10.25 10.20 11.39 11.45 11.21 11.32 11.08 11.54 11.59 11.85 11.75 11.53 11.55 11.60 11.41 11.18 11.03 11.64 12.61 12.44 12.53 12.66 12.54 12.22 12. 12.46 12.64 12.37 12.56 12.24 12.85 12.56 12.55 12.44 13.95 14.40 13.41 13.55 13.65 14.03 13.98 14.24 13.55 14.17 14.09 14.17 13.69 14.09 13.94 13.83 15.44 15.11 15.43 15.15 15.46 15.06 15.12 15.38 14.96 15.12 15.12 15.34 15.63 15.34 15.37 15.27 17.09 17.06 16.51 16.67 16.50 17. 17.06 17.58 17.47 17.33 17.06 17.15 16.65 17.21 17.07 16.88 18.91 18.52 18.12 18.57 18.68 18.20 18.12 18.69 18.81 18.37 18.69 18.57 18.87 18. 18.20 18.06 20.93 21.44 20.90 20.07 20.60 20.90 20.58 20.97 20.15 21.04 20.97 21.04 20.86 21.24 21.09 20.82 23.16 22.51 22.27 23. 23.32 22.73 22.27 22.65 22.26 22.27 22.50 22.03 23.21 22.57 22.48 22.26 25.63 25.37 24.74 25.05 26.20 26.09 25.58 25.88 25.99 25.51 25.39 25.51 25.66 25.47 25. 25.42.36.21 27.63..68.68 27.67 27.23 27.96 27.54 27.23 27.63.89 27.58.50 27.16 31.39.69.67.84 31.67 31.67 31.70 31.70.24.77 31.70 31.86.78 31.93 31.32 31.77 Except where noted with an asterisk ( ), exact ratios are within ±4% of the nominal ratios. 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 24 (241-110) Rexnord Industries, LLC, 1968, 2007.

Type YB3 Exact s Triple Reduction 2050 2060 2070 2080 2090 2100 2110 DRIVE SIZE 34.74 34.34 33.01 34.56 35.11 34.47 32.87 33.42 35.25 32.84 36.12 35.39 35.80 35.35 35.02 35.92 38.44 39.75 38.08 37.20 38.98 39.58 38.45 38.20 38.74 37.62 40.52 39.14 39.59 39.66 38.89 39.71 42.54 41.73 40.58 41.98 44.13 43.51 41.60 42.04 41.66 40.61 43.48 42.00 44.58 42.15 41.47 42.47 47.08 47.40 45.08 46.06 46.11 49.75 47.75 48.05 46.62 46.73 49.06 48.63 48.45 47.56 47.68 48.49 52.11 51.47 50.63 51.98 52.54 51.79 51.67 51.00 50.61 50.44 52.87 50.67 54.56 49.85 50.84 51.98 57.66 59.58 58.41 55.68 58.34 59.47 58.67 58. 59.11 57.42 59.65 58.67 58.12 60.50 59.23 58.83 63.82 62.55 62.24 62.84 62.27 65.37 63.49 62.37 63.07 61.98 63.78 62.70 67.34 60.91 62.47 62.93 70.62 71.95 69.14 68.57 69.02 74.75 67.82 71. 71.14 69.42 71.96 72.72 71.74 70.75 71.00 71.82 78.16 78.16 75.88 77.39 78.27 76.27 73.39 74.62 77.63 74.93 77.54 75.64 80.93 78.56 75.66 78.65 86.50 90.42 87.54 82.94 83.52 87.58 84.06 85. 87.00 88. 87.49 87.59 86.22 83.67 86.06 86.95 95.73 94.94 98.08 93.61 97.72 96.27 92.89 91.85 93.01 95. 93.83 92.33 99.90 99.06 92.76 96.61 105.9 107.0 105.0 102.1 102.8 110.1 105.7 105.0 104.1 106.7 106.2 108.6 106.4 103.8 105.5 106.8 117.2 114.7 115.2 114.7 115.6 121.0 114.3 114.7 111.9 114.8 115.5 111.4 119.2 119.3 118.0 117.0 1.7 132.8 132.9 123.5 1.4 1.2 125.1 131.1 132.9 131.5 1.3 1.0 127.0 133.9 131.1 1.4 143.6 139.5 141.6 139.4 145.3 143.1 142.8 145.2 137.0 143.3 140.2 138.1 147.1 142.3 139.7 138.4 158.9 157.1 157.3 152.0 163.2 158.1 156.2 165.9 160.0 164.2 158.2 159.9 156.7 160.6 163.6 158.0 175.9 174.7 175.6 173.8 178.7 172.1 169.0 174.5 172.0 173.3 169.6 173.1 179.6 173.8 174.4 168.7 194.6 190.1 195.0 187.1 197.3 189.3 193.6 196.4 196.9 198.5 197.5 188.4 193.3 188.9 196.2 191.2 Except where noted with an asterisk ( ), extra ratios are within±4% of the nominal ratios. 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 Type YB4 Exact s Quadruple Reduction DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 215.4 207.5 201.7 209.2 210.8 215.5 206.4 213.6 206.2 215.7 238.4 233.8 224.1 2.2 232.7 238.0 236.5 244.1 240.8 247.1 263.8 250.7 251.7 256.4 257.3 261.8 244.4 252.8 253.8 260.8 1.9 0.2 0.3 276.0 5.6 0.6 279.9 8.9 6.4 8.8 323.1 4.7 9.4 311.5 323.4 3.4 316.6 318.0 8.6 322.9 357.5 343.4 343.7 339.7 363.3 364.9 362.7 363.4 360.4 369.9 395.7 385.3 374.7 394.7 390.5 390.9 374.8 376.4 379.9 390.4 437.9 434.2 416.2 4.5 433.5 431.6 4.4 4.2 443.6 447.2 484.6 465.7 467.5 483.8 490.8 501.5 478.9 480.9 458.9 480.2 536.3 539.1 539.3 520.7 551.3 553.8 548.6 549.6 535.9 550.0 593.5 566.0 574.7 587.7 603.7 593.3 566.9 569.3 565.8 581.5 656.8 637.8 638.4 641.0 666.6 655.1 649.4 650.6 660.8 666.2 726.9 709.2 700.6 710.6 721.0 769.2 726.8 684.5 683.5 715.2 804.5 808.0 808.2 764.9 809.9 849.3 832.6 796.9 798.3 819.3 890.3 848.3 861.3 863.3 886.7 910.0 860.4 864.1 841.3 864.7 985.3 955.9 956.8 941.5 979.1 1005 985.6 987.5 982.6 990.5 1090 1063 1068 1077 1089 1094 1067 1039 1057 1069 1207 1157 1186 1159 1156 1203 1174 1209 1143 1156 Except where noted with an asterisk ( ), extra ratios are within±5% of the nominal ratios. 2120 2125 21 2135 Rexnord Industries, LLC, 1968, 2007. (241-110) 25

Type YB2/Thermal Horsepower Ratings s 5.06 through 31.39 Double and Triple Reduction 1750 through 720 This is actual hp (without service factor) that the drive will transmit continually for three hours or more without overheating. L.S. 4% 2050 2060 2070 2080 2090 2100 2110 DRIVE SIZE 5.06 350 33 42 57 66 85 109 133 161 190 233 6.20 0 33 43 58 67 86 110 134 163 192 235 7.59 2 34 44 59 69 88 113 137 167 196 240 9. 190 35 45 60 70 90 115 140 170 200 245 1750 11.39 13.95 155 125 36 38 47 49 62 65 73 76 94 97 121 124 146 151 177 184 208 216 255 265 313 385 400 17.09 100 39 50 66 77 99 127 154 187 220 270 319 369 20.93 84 52 70 81 104 133 162 197 232 4 336 389 25.63 68 83 107 137 167 202 238 2 345 399 31.39 56 140 170 207 244 9 354 409 5.06 0 43 55 79 86 110 137 167 202 238 2 357 400 6.20 2 44 56 82 88 112 140 171 207 244 8 366 410 7.59 190 45 58 85 90 115 144 175 212 248 9 372 420 9. 155 46 59 86 92 118 151 183 223 262 321 380 439 14 11.39 13.95 125 100 48 62 64 88 91 96 99 123 1 158 163 192 199 233 241 274 4 336 348 397 412 459 476 507 525 551 571 632 17.09 84 104 134 171 209 253 8 365 432 499 20.93 68 178 217 264 310 380 450 519 25.63 56 322 394 467 539 31.39 45 490 566 5.06 2 64 82 111 1 166 212 258 312 368 451 534 616 681 740 6.20 190 65 83 112 1 168 214 261 317 372 455 540 623 688 748 7.59 155 66 85 114 132 170 218 265 321 380 463 548 633 698 760 9. 125 86 115 134 173 221 269 326 384 470 557 643 710 772 1170 11.39 100 139 178 2 277 337 396 485 574 663 733 796 13.95 84 2 0 340 400 490 580 670 740 804 890 17.09 68 410 502 595 687 20.93 56 609 700 25.63 45 716 5.06 175 484 590 700 8 955 1058 1149 1272 6.20 140 492 611 713 844 971 1077 1169 15 870 7.59 9. 115 95 619 7 747 864 885 995 1022 1103 11 1198 1226 1326 1357 11.39 77 1049 1158 1258 1393 13.95 62 1164 16 1424 5.06 140 1358 1496 1624 1785 720 6.20 7.59 115 95 1533 1664 1697 18 1866 9. 77 1726 1874 11.39 62 1933 See Page for increased thermal capacity with Falk cooling fans. Thermal hp values are listed only if they are less than the mechanical hp and are based on an ambient temperature of 100 F (38 C). Refer to the bottom of this page for Temperature Factors for other ambient temperatures. Thermal horsepower ratings for drives with mounting level at bottom (Type YBN) are approximately 10% higher. For thermal HP ratings of ratios not shown, interpolate between the nearest two ratios. 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 Thermal Rating Factors Thermal horsepower ratings catalogued on pages 26 & 27 are based on a 100 F (38 C) ambient temperature at sea level. For other conditions, the thermal horsepower rating may be multiplied by the factors shown in the tables at right. Where no thermal horsepower ratings are shown in the tables, refer to Factory for selections at ambient above 100 F (38 C) and altitudes above sea level. Temperature Factors Ambient Temperature 50 F(10 C) 60 F(16 C) 70 F (21 C 80 F (27 C) 90 F (32 C 100 F (38 C) 110 F (43 C) 120 F (49 C) Altitude Factors Factor w/o Aux. Cooling or w/fan Altitude (ft) Factor 1.39 1.32 1.25 1.17 1.09 1.00.91.81 Factors tor other ambient temperatures can be interpolated. 0 2,500 5,000 7,500 10,000 12,500 15,000 17,500 1.00.95.90.85.81.76.72.68 26 (241-110) Rexnord Industries, LLC, 1968, 2007.

Type GHB1/Thermal Horsepower Ratings s 1.50 through 5.06 Single Reduction 1750 through 580 This is actual hp (without service factor) that the drive will transmit continually for three hours or more without overheating. 1750 14 1170 Nomin al 3% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 1.50 1170.2 38.6 49.4 67.5 93.1 1.84 950 31.2 39.9 51.1 69.8 97.0 132 2.25 780 31.9 40.8 52.3 71.5 99.0 135 179 2.76 640 32.6 41.8 53.5 73.1 101 139 184 218 3.38 520 33.5 42.8 54.9 75.0 104 143 192 2 4.13 420 39.0 47.5 59.7 81.5 113 158 215 258 5.06 350 41.0 49.6 65.1 88.8 120 168 227 275 1.50 950 39.2 48.6 64.4 87.9 123 170 1.84 780 39.8 49.3 65.2 89.0 125 173 239 2.25 640 40.4 50.1 66.2 90.7 127 177 244 9 2.76 520 43.8 51.6 67.8 92.6 1 181 248 6 3.38 420 45.9 53.4 72.6 94.6 133 186 253 5 4.13 350 54.5 74.1 97.0 139 196 270 326 5.06 0 78.7 104 147 205 4 343 1.50 780 49.4 63.1 80.9 111 155 215 8 1.84 640 49.8 63.7 81.7 112 157 217 2 368 2.25 520 52.5 66.6 82.4 113 159 219 6 372 2.76 420 68.3 84.5 114 161 225 310 377 3.38 350 70.6 87.0 116 164 2 316 387 4.13 0 118 165 235 325 400 5.06 2 120 173 240 337 413 870 720 580 s 3% L.S. DRIVE SIZE 2060 2070 2080 2090 2100 2110 2120 1.50 580 84.6 154 210 250 407 503 1.84 470 88.3 154 212 253 411 508 2.25 390 154 213 255 415 513 2.76 320 215 259 421 520 3.38 260 263 427 527 4.13 210 4 436 537 5.06 175 538 1.50 480 254 349 486 602 1.84 390 264 352 491 608 2.25 320 264 353 496 614 2.76 260 353 496 620 3.38 210 621 4.13 175 626 1.50 390 5 405 573 714 1.84 320 405 574 721 2.25 260 405 574 725 2.76 210 725 3.38 175 725 See Page for increased thermal capacity with Falk cooling fans. Thermal hp values are listed only if they are less than the mechanical hp and are based on an ambient temperature of 100 F (38 C). Refer to the bottom of Page 26 for Temperature Factors for other ambient temperatures. For thermal HP ratings of ratios not shown, interpolate between the nearest two ratios. Type YB3/Thermal Horsepower Ratings s 17.09 through 105.9 Double and Triple Reduction 1750 through 870 This is actual hp (without service factor) that the drive will transmit continually for three hours or more without overheating. ±4% L.S. 2050 2060 2070 2080 2090 2100 2110 17.09 100 407 20.93 84 4 25.63 68 440 31.39 56 451 1750 38.44 47.08 45 37 179 250 256 6 322 363 377 419 436 463 481 503 523 566 579 57.66 461 499 553 597 70.62 25 502 557 602 86.50 20 561 606 105.9 16.5 610 17.09 84 551 599 663 20.93 68 574 623 690 25.63 56 596 647 716 14 31.39 45 625 679 752 38.44 37 651 708 783 47.08 716 792 57.66 25 802 17.09 68 759 824 912 20.93 56 777 844 935 1170 25.63 31.39 45 37 792 860 884 952 979 38.44 992 870 17.09 50 1319 1460 See Page for increased thermal capacity with Falk cooling fans. Thermal hp values are listed only if they are less than the mechanical hp and are based on an ambient temperature of 100 F (38 C). Refer to the bottom of Page 26 for Temperature Factors for other ambient temperatures. Thermal horsepower ratings for drives with mounting level at bottom (Type YBN) are approximately 10% higher. For thermal HP ratings of ratios not shown, interpolate between the nearest two ratios. 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 Rexnord Industries, LLC, 1968, 2007. (241-110) 27

Cooling Fans For Type YB Drives For fan cooled drives, multiply the thermal horsepower ratings catalogued on Pages 26 and 27 by the following convenient multipliers: 2.0 for Sizes 2050 thru 2120 GHB1 2.0 for Sizes 2050 thru 2155 YB2 1.8 for Sizes 2160 thru 2195 YB2 1.9 for Sizes 2110 thru 2155 YB3 1.7 for Sizes 2160 thru 2195 YB3 Engineering 247-140 lists exact thermal horsepower ratings for drives equipped with fan. Because of the configuration of the fan assembly around the high speed shaft, a motor bracket cannot be installed when a fan is used. As noted on Page 4, thermal horsepower is the actual horsepower (without Service Factor) that a gear drive will transmit continually for three hours or more without overheating. If a drive creates heat faster than it can be dissipated, severe damage may occur. Falk Cooling Fans provide a simple and inexpensive way to utilize the mechanical rating of gear drives by lowering operating temperatures, thus increasing thermal horsepower capacity. Cooling fans have been successfully used on electric motors and other related machinery for many years. They have been used since 1960 on thousands of Falk gear drives applications such as paper mills, desert overland conveyors, steel mills, etc. Cooling Fans eliminate the need for water or oil cooling, pumps and external piping. Falk Pump and Cooler selections provide for thermal capacities beyond the range of fan cooled drives, refer to Selection Guide 131-310 for pump and cooler selections, or Selection Guide131-315 for air-to-oil cooler selections. Application Benefits Low initial cost and upkeep In addition to low initial cost and negligible maintenance, cooling fans eliminate the need to provide liquid cooling and piping to and from the drive. Effects of Variation on Splash Lubrication General Information When selecting drives for multi-speed or variable speed applications, determine the speed which develops the greatest torque and select the drives on this basis. If the speed is not listed in the selection table, use the next lower speed. Gear drives offered in this selection guide are assembled with a variety of standard internal lubrication components such as oil pans, wipers, dams and extra oil troughs to ensure proper splash lubrication. In addition, different oil levels are necessary for various sizes, speeds and ratios. Consequently, to operate an existing drive at different speeds from those shown on the nameplate, full application and nameplate information must be referred to Factory for review of the lubrication system. Single Applications These drives are designed to operate with splash lubrication on any single speed application and any ratio shown in this selection guide unless otherwise noted. It is essential that all orders indicate the desired operating speed and ratio so that the proper internal oil distribution accessories can be supplied for the specific speed. Variable or Multi-speed Applications All variable or multi-speed applications will be referred to the Factory to specify lubrication components for adequate lubrication at the slowest speed, without excessive heating or churning at the highest speed. It is essential that all orders indicate minimum and maximum speeds, as well as the speed duration cycles. efficiency Less than one quarter of one per cent catalogued horsepower rating required to drive the fans. Air-velocity The fan design is such that the measurable air velocity is LESS than the windage created by the low speed shaft coupling. Built-in safety Small openings in the fan guards and two piece expanded metal grills on the inside of the guards protect operators. Coupling guard provisions Four pads are provided on the fan guards so expanded metal coupling guards can be bolted directly to the fan guards. Simple Disassembly All fan parts can be added or removed without dismantling the gear drive. Split fan hubs slide over the shaft ends; split fan guards lift off. Choice of seals Grease-purged type seals can be used on fan cooled drives. Sound level The sound level at 1750 is about the same as that from fans on totally enclosed, fan cooled driving motors. When the speeds of variable or multi-speed applications are as follows, a separate motor-driven oil pump (at an extra charge) may be required. Single Reduction Drives Refer application details to the Factory when a) the high speed shaft minimum speed is under 400 and/or b) the low speed shaft minimum speed is under 50. Double and Triple Reduction Drives Refer application details to the Factory when the low speed shaft is as follows: Low RPM Minimum Maximum Oil Pump Required 0-49 50+ Yes 0- + Yes Quadruple Reduction Drives can operate at any variable or multiple speeds within the catalogued speed ranges without modification. Other speeds do not require an oil pump for adequate lubrication at variable speeds, unless a pump is needed for another purpose. (241-110) Rexnord Industries, LLC, 1968, 2007.

Calculate Overhung Load SEAL CAGE DISTANCE 126,000 x hp x Fc x Lf Overhung Load = Pitch Dia x CENTER LINE OF LOAD Types YB & YBT Double Reduction Fc = Load Connection Factor Sprocket 1.00 Machined Pinion Gear 1.25 Synchronous(Timing)Belt 1. V-Belt 1.50 Flat Belt 2.50 L f = Load Location Factor L.S.S. - See table on next page H.S.S - See instructions below. Refer all multiple chain sprocket and pinion mounted applications to Factory for deflection analysis. speed shaft overhung load ratings published below are for normal conditions where the center line of the load is one shaft diameter from the seal cage, and for speeds of 1170 or lower. Where the center line of the load is one shaft diameter from the seal cage or closer, calculate the high speed shaft overhung load using Lf = I in the formula above. This formula employs the transmitted horsepower, without service factor, providing the overloads, starting loads, and brake capacities do not exceed the amounts listed in GEAR DRIVE RATINGS on Page 4. Check the result against the rating in the table below. Refer the application to the Factory if the calculated load (using Lf = I ) for any of these conditions exceeds the value published below, or if the load is overhung load ratings For loads applied one shaft diameter from seal cage and speeds of 1170 or lower Contact Factory for higher overhung load ratings AGMA 4% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 2125 Pounds 5.06 2 0 150 490 960 770 0 0 0 0 0 0 0 0 0 6.20 190 0 380 490 1200 770 0 0 0 0 0 0 4000 1610 0 7.59 155 510 800 490 1200 770 9 0 370 0 2040 0 4000 4600 0 9. 125 700 800 740 1200 200 1700 850 1170 850 00 0 4000 4600 4690 1750 11.39 13.95 100 84 6 700 800 470 600 570 1200 1200 0 1400 1110 1700 2000 720 20 1940 2600 2600 00 00 3400 3400 4000 4000 4600 4600 0 5400 3940 11.09 20.93 68 56 700 700 800 800 1000 1000 1200 1200 1400 1400 1700 1700 2000 1500 20 20 2600 2600 00 00 3400 2080 4000 4000 25.63 45 700 800 1000 1200 1400 1700 2000 20 2600 00 3400 4000 31.39 37 700 800 1000 1200 1400 1700 2000 20 2600 00 3350 4000 5.06 115 0 700 1000 1200 1400 0 0 0 0 0 0 720 25 0 0 6.20 140 350 700 1000 1200 1400 0 0 0 0 0 0 4000 4600 0 0 7.59 115 700 800 1000 1200 1400 1700 0 1520 0 2220 0 4000 4600 1260 2760 870 9. 95 700 800 1000 1200 640 1700 1800 20 20 00 0 4000 4600 5120 3890 11.39 77 700 800 1000 1200 450 1700 2000 20 2600 00 3400 4000 4600 3460 6400 13.95 62 700 800 1000 1200 1400 1700 1690 20 2600 00 3400 4000 4600 5400 4320 17.09 50 700 800 1000 1200 1400 1700 2000 20 2600 00 3400 4000 5.06 140 0 800 1000 1200 1400 0 0 0 0 0 0 2640 4600 0 0 6.20 115 570 800 1000 1200 1400 0 0 0 0 0 0 4000 4600 0 0 720 7.59 9. 95 77 700 700 800 800 1000 1000 1200 1200 1400 1070 1700 1700 0 2000 20 20 0 2600 00 00 1250 210 4000 4000 4600 4600 3570 5400 5970 4090 11.39 62 700 800 1000 1200 860 1700 2000 20 2600 00 3400 4000 4600 5400 6400 13.95 50 700 800 1000 1200 1400 1700 2000 20 2600 00 3400 4000 4600 5400 4550 5.06 115 80 800 1000 1200 1400 0 0 0 0 910 0 4000 4600 70 0 6.20 95 700 800 1000 1200 1400 500 0 0 0 910 0 4000 4600 70 0 580 7.59 77 700 800 1000 1200 1400 1700 750 20 2 00 3190 4000 4600 5400 6400 9. 62 700 800 1000 1200 1400 1700 2000 20 2600 00 2220 4000 4600 5400 5700 11.39 50 700 800 1000 1200 1400 1700 2000 20 2600 00 3400 4000 4600 5400 6400 In each section, the last overhung load value applies to all of the higher ratios of that gear reduction. Published ratings are based on a combination of the most unfavorable conditions of loading. For higher ratings, refer full data to Factory. For OHL values of ratios or H.S. speeds not shown, use the OHL value of the next lowest ratio or next highest H.S.. TRIPLE AND QUADRUPLE REDUCTIONNEXT PAGE applied at a distance greater than one shaft diameter from the seal cage. Consult Factory for er Overhung Load Ratings In many cases, capacity in excess of that published is available. Published ratings are based on a combination of the most unfavorable conditions of rotation, speed, hand of drive, direction of applied load, and drive loading. speed shaft overhung load example A 15 hp, 1750 motor with a 4 inch pitch diameter sheave is V-Belt connected to a 2070YB2 gear drive, which has a standard AGMA ratio of 31.39:1. A 12 inch pitch diameter sheave is mounted on the drive high speed shaft 2 inches (one shaft diameter) from the seal cage. Calculate the high speed shaft and overhung load as follows: Drive high speed shaft = 4 12 Rexnord Industries, LLC, 1968, 2007. (241-110) 21 2135 2140 2145 2150 2155 x1750 = 583 Using the overhang load formula from colum one, 126,000 x 15 x 1.50 x 1.00 Overhung load = = 405 pounds. 12x583 From the table below, the high speed shaft overhung load capacity for a 2070YB2 drive with 31.39:1 ratio is 1000 pounds. The actual load is less than the published capacity and is satisfactory. If the actual load should exceed the published capacity or if the center line of the load is more than one shaft diameter from the seal cage, refer full details to the Factory. 2160 2165 2170 2175 2180 2185 2190 2195

Types YB & YBT Triple & Quadruple Reduction Overhung Load Ratings Pounds For loads applied one shaft diameter for seal cage and speeds of 1170 or lower Contact Falk for higher overhung load ratings Triple Reduction 1170 870 720 580 4% L.S. 2050 2060 2070 2080 2090 2100 2110 DRIVE SIZE 34.74 34 350 0 500 600 700 850 1000 1150 10 760 1700 0 390 400 00 47.08 25 350 0 500 600 700 850 1000 1150 10 1500 1700 680 20 2700 00 57.66 20 350 340 500 600 700 850 1000 1150 10 1460 1700 2000 20 2700 00 34.74 25 350 0 500 600 700 850 1000 1150 10 1500 1700 0 1520 2150 00 47.08 18 350 400 500 600 700 850 1000 1150 10 1500 1700 1610 20 2700 00 57.66 15 350 400 500 600 700 850 1000 1150 10 1500 1700 2000 20 2700 00 34.74 21 350 1 500 600 700 850 1000 1150 10 1500 1700 0 20 2700 00 47.08 15 350 400 500 600 700 850 1000 1150 10 1500 1700 2000 20 2700 00 34.74 17 350 250 500 600 700 850 1000 1150 10 1500 1700 690 20 2700 00 47.08 12.5 350 400 500 600 700 850 1000 1150 10 1500 1700 2000 20 2700 00 Quadruple Reduction 1170 and Lower 2120 2125 238.4 to 5 to.5 175 200 250 0 350 425 190 575 650 1207 In each section, the last overhung load value applies to all of the higher ratios of that gear reduction. Published ratings are based on a combination of the most unfavorable conditions of loading. For higher ratings, refer full data to Factory. For OHL values of ratios or H.S. speeds not shown, use the OHL value of the next lowest ratio or next highest H.S.. For YB & YBT Triple Reduction, s 17.09-31.39 Sizes 2170-2195 the high speed shaft overhung loads for all input speeds and ratios ore as follows: Sizes 2170/2175, 20; Sizes 2180/2185, 2700 and Sizes 2190/2195, 00. 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 Calculate low speed shaft overhung load Standard low speed bearings in Types GHB and YB drives will accommodate most overhung loads. Where extra capacity is required, the Type YBT drives are offered with higher capacity bearings to permit customizing of standard drives to many applications at only a nominal extra charge. However, if an outboard bearing is used, the overhung load ratings of GHB and YB drives can be increased by 80%. Locate the center of the load as close to the drive seal cage as practical to minimize the overhung load and increase bearing life. Calculate the low speed shaft overhung load using the formula and the Fc, value from the preceding page. This formula employs the transmitted horsepower, without service factor, providing the overloads, starting loads, and brake capacities do not exceed the amounts listed in GEAR DRIVE RATINGS on Page 4. Refer the application to the Factory if the calculated load exceeds the value published in the table above. The Lf load location factors are tabulated on Page 31 and are based on the distance from the center line of the load to the drive seal cage. Low speed shaft overhung load example A belt conveyor requiring 115 hp is driven by a 2110YB2 drive with an input speed of 1750 and low speed shaft output of 68. A 10 inch pitch diameter, single chain sprocket is mounted on the drive low speed shaft with the center line of the load 5.5 inches from the seal cage. Calculate the overhung load. Overhung Load = 126,000 x 115 x 1.00 x 1.00 10 x 68 = 21,0 pounds From the Type YB table on Page 31 for 1750 input and 68 output (84 output and lower), the low speed shaft overhung load capacity for the 2110YB2 drive is 16,000 pounds. Since the actual load exceeds the published capacity of the 2110YB2, refer to the Type YBT table on Page 33 and note that the overhung load capacity of the 2110YBT2 of 25,000 pounds is satisfactory for this application. (241-110) Rexnord Industries, LLC, 1968, 2007.

Type Y & YF All Reductions Low L f Load Location Factors Based on distance from the center line of load to drive seal cage Distance (Inches) DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 2125 21 2135 2140 2145 Distance (Inches) 2150 2155 2160 2165 DRIVE SIZE 2170 2175 2.94.92.90.88 4.90 2.5.98.96.93.91.89 4.5.91.90 3 1.02 1.00.96.94.92.90.89 5.92.91.90 3.5 1.06 1.04 1.00.97.95.93.92.90.89.89 5.5.94.93.91.90 4 1.10 1.08 1.03 1.00.97.95.94.92.91.91 6.95.94.92.91.90 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 10 11 12 1.11 1.06 1.10 1.03 1.06 1.09 1.12 1.00 1.03 1.05 1.08 1.11 1.13 Center line of load is beyond end of standard L.S.. Contact Factory for special shaft..97 1.00 1.02 1.03 1.07 1.09 1.12 1.14.96.98 1.00 1.02 1.05 1.07 1.09 1.11.94.96.98 1.00 1.02 1.04 1.06 1.08 1.10 1.12.92.94.96.98 1.00 1.02 1.04 1.06 1.07 1.09 1.13.92.94.95.96.98.99 1.01 1.02 1.03 1.05 1.08 1.11 1.14 Interpolate for intermediate values. For example, Lf is.98 for a Size 2060 drive when Distance is 2.75 inches. 7 8 9 10 11 12 13 14 15 16 17 18 19.98 1.01 1.03 1.06 1.09 1.12.96.99 1.01 1.04 1.06 1.09 1.11.95.97.99 1.02 1.04 1.06 1.09 1.11 1.13 Center line of load is beyond end of standard L.S.. Contact Factory for special shaft. 2180 2185.93.96.98 1.00 1.02 1.04 1.06 1.09 1.11 1.13 2190 2195.92.94.96.98 1.00 1.02 1.04 1.06 1.08 1.11 1.12 1.13 Type YB Double, Triple, and Quadruple Reduction Low Overhung Load Factors Pounds Multiply values listed below by 1000Refer to Factory for overhung load ratings 3 Approx L.S. 2050 2060 2070 2080 2090 2100 2110 DRIVE SIZE 5.06 350 5.9 7.0 8.0 10.3 12.5 14.0 15.2 14.8 20.0 22.1 6.20 0 6.0 7.0 8.3 10.9 12.5 14.0 15.7 15.2 20.0 21.3 7.59 2 6.0 7.0 8.9 11.0 12.5 14.0 16.0 15.8 20.0 22.1 1750 9. 190 6.0 7.0 9.0 11.0 12.5 14.0 16.0 16.0 20.0 23.4 11.39 155 6.0 7.0 9.0 11.0 12.5 14.0 16.0 17.4 20.0.4 50.0 13.95 125 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0 27.8 32.3 50.0 65.0 17.09 100 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 65.0 20.93 84 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 65.0 5.06 0 6.0 7.0 8.7 10.9 12.5 14.0 16.0 15.8 20.0 23.5 33.1 34.5 6.20 2 6.0 7.0 8.9 11.0 12.5 14.0 16.0 16.1 20.0 22.6 33.6 39.4 7.59 190 6.0 7.0 9.0 11.0 12.5 14.0 16.0 17.1 20.0 23.5 33.7 40.0 14 9. 155 6.0 7.0 9.0 11.0 12.5 14.0 16.0 17.3 20.0 25.4 33.2 39.8 11.39 125 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 32.3 40.0 50.0 55.0 13.95 100 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 55.0 65.0 17.09 84 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 55.0 65.0 5.06 2 6.0 7.0 9.0 11.0 12.5 14.0 16.0 16.8 20.0 24.9 35.0 37.6 47.6 55.0 6.20 190 6.0 7.0 9.0 11.0 12.5 14.0 16.0 17.1 20.0 24.0 35.0 40.0 48.7 55.0 1170 7.59 9. 155 125 6.0 6.0 7.0 7.0 9.0 9.0 11.0 11.0 12.5 12.5 14.0 14.0 16.0 16.0 18.0 18.0 20.0 20.0 25.4 27.9 35.0 35.0 40.0 40.0 50.0 50.0 55.0 55.0 11.39 100 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 55.0 13.95 84 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 55.0 65.0 5.06 175 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0 27.4 35.0 40.0 50.0 55.0 65.0 870 6.20 7.59 140 115 6.0 6.0 7.0 7.0 9.0 9.0 11.0 11.0 12.5 12.5 14.0 14.0 16.0 16.0 18.0 18.0 20.0 20.0 26.4.5 35.0 35.0 40.0 40.0 50.0 50.0 55.0 55.0 65.0 65.0 9. 95 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 55.0 65.0 5.06 140 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 55.0 65.0 720 6.20 115 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 55.0 65.0 7.59 95 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 55.0 65.0 580 5.06 115 6.0 7.0 9.0 11.0 12.5 14.0 16.0 18.0 20.0.0 35.0 40.0 50.0 55.0 65.0 In each section, the last overhung load value applies to all of the higher ratios of all gear reductions. For OHL values of ratios or LS. speeds not shown, use the OHL value of the next lowest ratio or next highest L.S.. Published ratings are for standard assemblies with shaft extensions as shown on the How to Order page and are based on the most unfavorable conditions of loading. For higher ratings and ratings for the second shaft extension, refer full data to Factory. 2120 2125 21 2135 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2190 Rexnord Industries, LLC, 1968, 2007. (241-110) 31

Type GHB1 L f Load Location Factors DISTANCE (Inches) DRIVE SIZE 2050 2060 2070 2080 2090 2100 2110 2120 1.87.83.80 1.5 1.00.94.90.87.81 2 1.04 1.02 1.00.97.88.84 2.5 1.09 1.05 1.03 1.02.96.91 3 1.14 1.08 1.06 1.04 1.01.97.91 3.5 1.18 1.12 1.09 1.07 1.03 1.01.95.92 4 1.15 1.12 1.09 1.06 1.03 1.00.96 4.5 1.15 1.12 1.08 1.04 1.02 1.00 5 1.14 1.10 1.06 1.03 1.02 5.5 1.12 1.08 1.04 1.03 6 1.15 1.10 1.06 1.04 6.5 1.12 1.07 1.05 7 1.13 1.08 1.07 7.5 1.15 1.10 1.08 8 Center line of load is beyond end of standard 1.12 1.09 8.5 L.S.. Contact Factory for special shaft. 1.10 9 1.12 Interpolate for intermediate values. Type GHB1 Overhung Load Factors Pounds Low Multiple values listed below by 1000 Contact Factory for higher overhung load ratings 1750 14 1170 870 720 and Lower ±3% L.S. DRIVE SIZE 2050 2060 2070 2080 2090 2100 21 2135 1.50 1170 2.50 2.76 4.70 4.74 8.47 1.84 950 2.50 2.25 3.88 4.04 7.77 13.0 2.25 780 2.50 3.14 4.24 4.52 7.17 13.0 18.0 2.76 640 2.50 3. 3.69 3.72 7.45 13.0 18.0 20.5 3.38 520 2.50 3. 3.98 5.80 8.41 13.0 18.0 19.2 4.13 420 2.50 3. 4. 5.80 6.70 13.0 18.0 25.0 5.06 350 2.50 3. 4.21 5.32 7.61 13.0 18.0 23.1 1.50 950 2.50 3.25 4. 5.50 8.47 13.0 1.84 780 2.50 2.78 3.88 4.91 6.89 13.0 18.0 2.25 640 2.50 3.06 3.80 3.82 6.26 13.0 18.0 21.8 2.76 520 2.50 3. 3. 2.96 6.54 13.0 18.0 16.9 3.38 420 2.50 2.87 3.50 5.63 8.40 13.0 18.0 15.6 4.13 350 2.50 3. 4. 5.80 6.64 13.0 18.0 25.0 5.06 0 2.50 3. 3.72 4.62 7.57 13.0 18.0 21.9 1.50 780 2.50 3. 4. 5.80 8.47 13.0 18.0 25.0 1.84 640 2.50 2.78 3.87 5.80 5.98 13.0 18.0 24.7 2.25 520 2.50 2.97 3.49 3.03 6.03 12.4 18.0 18.3 2.76 420 2.50 3. 3.21 2.48 5.82 13.0 18.0 13.1 3.38 350 2.50 2.44 3.05 4.96 8.40 13.0 18.0 13.6 4.13 0 2.50 3. 4. 5.80 6.68 12.4 18.0 22.0 5.06 2 2.50 3. 3.26 4.15 7.58 13.0 18.0 20.9 1.50 580 2.50 3. 4. 5.80 8.47 13.0 18.0 25.0 1.84 470 2.50 2.77 3.91 5.80 5.91 13.0 18.0 24.7 2.25 390 2.50 2.88 3.51 2.78 6.00 10.1 18.0 12.8 2.76 320 2.50 3. 3.14 2. 5.85 11.9 18.0 7.15 3.38 260 2.50 2.13 2.23 4.76 8.40 12.9 18.0 13.6 4.13 210 2.50 3. 4. 5.76 6.66 10.0 18.0 21.4 5.06 175 2.50 3. 3.19 4.10 7.63 10.9 18.0 19.8 1.50 480 2.50 3. 4. 5.80 8.47 13.0 18.0 25.0 1.84 390 2.50 2.77 3.89 5.80 5.91 12.5 18.0 24.7 2.25 320 2.50 2.84 3.50 2.76 6.04 8.56 18.0 9.49 2.76 260 2.50 3. 3.09 2.21 5.83 10.5 18.0 3.31 3.38 4.13 5.06 210 175 140 2.50 2.50 2.50 2.13 3. 3. 2.00 4. 3.17 In each section, the last overhung load value applies to all of the higher ratios of all gear reductions. For OHL values of ratios or L.S. shaft speeds not shown, use the OHL value of the next lowest ratio or next highest L.S. shaft. Published ratings are for standard assemblies with shaft extensions as shown on the How to Order page and are based on the most unfavorable conditions of loading. For higher ratings and ratings for the second shaft extension, refer full data to Factory. 4.70 5.71 4.04 8.40 6.69 7.55 13.0 9.75 10.6 18.0 18.0 18.0 13.6 21.5 19.2 32 (241-110) Rexnord Industries, LLC, 1968, 2007.

Ratings of extra capacity L.S. shaft bearings When the applied load exceeds the rated capacity of the standard low speed shaft of a Type YB gear drive, the following are available for an extra charge, either 1. the Type YBT drive with extra capacity low speed bearings, or 2. an outboard bearing to increase the overhung load capacity,or 3. refer full details to Factory if the actual load exceeds the published capacity. Published capacities are based on the most severe loading conditions. A check at the Factory of the specific application will show that additional capacity is available in many cases. L.S. SHAFT BZ XZ Note that external dimensions are the same for the type YB and YBT drives except for those tabulated below. Refer to pages 35 and 36 for balance of type YBT drive dimensions. SIZE 2110 2120 2125 BZ 8.31 9.38 XZ 1075 11.50 Type YBT Double Reduction Low Overhung Load Ratings Pounds Multiply values listed below by 1000Refer to Factory for higher overhung load ratings s 4% L.S. 2110 2120 2125 21 2135 2140 2145 DRIVE SIZE 2150 2155 5.06 350 18.9 19.0 22.8 35.7 6.20 0 19.2 18.9 23.2 36.1 7.59 2 19.8 19.4 23.1 38.0 9. 190 20.2 18.5 23.7 40.3 1750 11.39 155 21.8 19.9 24.7 45.0 75.0 13.95 125 23.9 22.4 26.9 45.0 50.0 75.0 17.09 100 25.0 23.5.2 45.0 50.0 60.0 75.0 20.93 84 25.0 26.9 31.6 45.0 50.0 60.0 75.0 25.63 68 25.0 27.9 34.1 45.0 50.0 60.0 75.0 31.39 56 25.0.0 35.0 45.0 50.0 60.0 75.0 5.06 0 20.1 20.2 24.3 37.9 47.3 54.8 6.20 2 20.4 20.1 24.6 38.4 49.1 60.0 7.59 190 21.0 21.2 24.6 40.4 50.0 60.0 9. 155 22.0 20.4 25.9 43.3 50.0 60.0 14 11.39 125 23.6 21.6 26.8 45.0 50.0 60.0 75.0 85.0 13.95 100 25.0 24.6.2 45.0 50.0 60.0 75.0 85.0 100.0 17.09 84 25.0 25.7 31.7 45.0 50.0 60.0 75.0 85.0 100.0 20.93 68 25.0.4 34.3 45.0 50.0 60.0 75.0 85.0 100.0 25.63 56 25.0.0 35.0 45.0 50.0 60.0 75.0 85.0 100.0 5.06 2 21.3 21.4 25.8 40.3 50.0 59.0 73.3 81.7 6.20 190 21.7 21.3 26.1 40.7 50.0 60.0 75.0 84.7 7.59 155 22.3 23.1 26.1 43.3 50.0 60.0 75.0 85.0 1170 9. 125 23.9 22.5.3 45.0 50.0 60.0 75.0 85.0 11.39 100 25.0 23.6.1 45.0 50.0 60.0 75.0 85.0 13.95 84 25.0 27.0 31.7 45.0 50.0 60.0 75.0 85.0 100.0 17.09 68 25.0.0 34.4 45.0 50.0 60.0 75.0 85.0 100.0 20.93 56 25.0.0 35.0 45.0 50.0 60.0 75.0 85.0 100.0 5.06 175 23.3 23.4.1 44.1 50.0 60.0 75.0 85.0 100.0 6.20 140 23.7 23.3.6 44.7 50.0 60.0 75.0 85.0 100.0 870 7.59 115 25.0 26.3.8 45.0 50.0 60.0 75.0 85.0 100.0 9. 95 25.0 25.8 32.2 45.0 50.0 60.0 75.0 85.0 100.0 11.39 77 25.0 26.8 32.9 45.0 50.0 60.0 75.0 85.0 100.0 13.95 62 25.0.0 35.0 45.0 50.0 60.0 75.0 85.0 100.0 5.06 140 24.7 24.8.1 45.0 50.0 60.0 75.0 85.0 100.0 6.20 115 25.0 25.0.6 45.0 50.0 60.0 75.0 85.0 100.0 720 7.59 95 25.0.5 31.3 45.0 50.0 60.0 75.0 85.0 100.0 9. 77 25.0.1 34.9 45.0 50.0 60.0 75.0 85.0 100.0 11.39 62 25.0.1 35.0 45.0 50.0 60.0 75.0 85.0 100.0 13.95 50 25.0.0 35.0 45.0 50.0 60.0 75.0 85.0 100.0 5.06 115 25.0 27.3 33.0 45.0 50.0 60.0 75.0 85.0 100.0 580 6.20 7.59 95 77 25.0 25.0 27.5.0 33.7 34.4 45.0 45.0 50.0 50.0 60.0 60.0 75.0 75.0 85.0 85.0 100.0 100.0 9. 62 25.0.0 35.0 45.0 50.0 60.0 75.0 85.0 100.0 In each speed section, the last overhung load value applies to all of the higher ratios of all gear reductions. For OHL values of ratios or L.S. speeds not shown, use the OHL value of the next lowest ratio or next highest L.S.. Published ratings are for standard assemblies with shaft extensions as shown on the How to Order page and are based on the most unfavorable conditions of loading. For higher ratings and ratings for the second shaft extension, refer full data to the Factory. 2160 2165 2170 2175 2180 2185 2190 2195 Rexnord Industries, LLC, 1968, 2007. (241-110) 33

Type GHB Dimensions Inches Right Angle Gear Drives Single Reduction Sizes 2050 through 2120 XX X N SHAFT GUARD (WHEN REQ'D) B USABLE LENGTH S INSPECTION COVER FAN GUARD/AIR DEFLECTOR (WHEN REQ'D) USABLE LENGTH A T H.S. SHAFT KEY O W D VENT Z OIL LEVEL DIP STICK E V J OIL DRAIN 4 HOLES FOR U-DIA. BOLT Q M L M Q R F P H Y C G K F DRIVE SIZE A W/O Fan With Fan B C D E F G H J K L M N O P 2050 3.25 1.50 3.94 6.00 13.00 1.00 11.50 4.75 13.50 9.00 3.50 9.88 15.88 2060 3.81 2.00 4.25 2.00 7.38 16.00 0.88 14.00 3.25 5.88 15.75 11.00 4.50 12.00 17.44 4.75 2070 4.38 2.44 4.88 3.12 8.68 19.00 1.00 17.25 4.75 7.75 19.25 12.00 5.00 13.75 19.25 4.75 2080 4.88 2.88 5.25 5.00 9.75 21.50 1.25 19.25 3.38 8.32 21.75 14.00 5.75 15.00 22.50 5.00 2090 5.62 3.38 6.00 4.00 12.00 26.50 1.75 23.50 6.00 11.00 27.00 18.00 7.25 17.75 26.38 6.25 2100 6.38 3.94 7.50 7.00 14.00 32.00 2.00.25 9.00 12.75 33.25 21.00 8.50 21.12 31.38 7.00 2110 7.50 4.94 8.38 6.00 16.75 38.12 2.00 34.00 7.25 15.12 38.00.00 12.00 26.00 40.12 9.62 2120 8.38 5.94 9.25 10.00 19.88 44.25 2.00 40.00 10.00 18.50 44.00 31.75 13.88.00 45.25 10.00 DRIVE SIZE Q R L.S. SHAFT H.S. SHAFT U V W X XX Y Z S Key T Key 2050 3.00 0.88 1.750 3/8 x 3 /8 x3 1.500 3/8 x 3 /8 x 2½ 0.63 5.50 21.88 5.52 10.92. 4.62 145 2060 3.75 1.25 2.000 ½ x ½ x 3 ½ 1.750 3/8 x 3 /8 x 3 0.75 7.00 24.82 7.12 12.56 2.00 5.81 240 2070 4.25 1.50 2.375 5/8 x 5 /8 x4 2.000 ½ x ½ x 3½ 0.75 8.00 27.94 8.31 15.04 2.00 6.88 425 2080 4.50 1.50 2.750 5/8 x 5 /8 x4½ 2.250 ½ x ½ x 4 0.87 9.50 32.25 9.18 15.92 5.00 7.88 555 2090 5.50 1.50 3.000 ¾ x ¾ x 5½ 2.750 5/8 x 5 /8 x 4½ 1.00 12.50 38.38 10.75 19.20 4.00 9.94 8 2100 6.00 1.75 4.000 1 x1 x 6½ 3.250 ¾ x ¾ x 5 1.25 15.75 45.38 13.18 22.92 5.00 11.50 1480 2110 8.00 2.00 5.500 1¼ x1 1 /4 x 8 ½ 4.000 1 x1 x 6 1.50 17.75 56.88 16.25.68 5.00 14.06 90 2120 8.50 2.00 5.750 1½ x1½ x 9 4.500 1 x1 x 7½ 1.50 21.00 65.12 18.12.80 7.00 16.62 4400 Size 2050 has foundation pads full length of base. diameters under 3" are held to limits of +.0000", -.0005". diameters 3" and over are held to limits of +.000", -.001". keyseat depth is one-half of key height. Double extension will be furnished only when specified on the order. Dimension D is greater than J plus F only for Sizes 2050, 2060 and 2080. Dimension A in the shaded area is also usable key length for fan cooled drives. Drives are for horizontal floor mounted operation unless specifically stated otherwise. Refer to Factory for other mountings. Dimensions are for reference only and subject to change without notice unless certified. Wt lb Rexnord Industries, LLC, 1968, 2007. (241-110) 34

Types YB and YBT Dimensions Inches Right Angle Gear Drives Double, Triple, & Quadruple Reduction Sizes 2050 through 2155 N X XX USABLE LENGTH B S DRIVE WITH COOLING FAN L.S. SHAFT KEY SHAFT GUARD (WHEN REQUIRED) VENT INSPECTION COVER H.S. SHAFT KEY T A USABLE LENGTH R 1.2 E V O W D 4 HOLES FOR LIFTING DRIVE OIL LEVEL DIP STICK E V O W D Z 4 HOLES FOR LIFTING DRIVE OIL LEVEL DIP STICK LEVELING PADS Q M L M Q OIL DRAIN F P H G K P G J P F 6-HOLES FOR U-DIA. BOLT OIL DRAINS F G J K BA J 8-HOLES FOR U-DIA. BOLT F DRIVE SIZE B BA D E F G H J K L M N P Q R S L.S. U V X XX Z Key 2050 4.00 8.50 15.75 2.50 9.25 6.00 23.50 11.50 4.88 11.00 2.75 0.63 2.750 5/8 x 5 /8 x4 0.75 8.00 6.13 12.31 2060 4.81 9.50 17.75 2.50 10.88 7.00 26.75 12.25 5.25 12.00 3.13 0.63 3.000 ¾ x ¾ x 4 ½ 0.75 9.00 6.75 14.17 2070 5.38 10.63 20.13 3.00 12.13 7.63.25 14.00 5.88 13.50 3.00 0.75 3.500 7/8 x 7 /8 x 5 1.00 10.25 7.38 14.63 2080 6.44 12.13 22.50 3.00 14.50 9.13 35.00 15.50 6.63 15.13 3.75 0.75 4.000 1 x 1 x 6 1.00 11.50 8.13 15.75 2090 7.06 13.38 25.38 3.38 15.50 10.00 37.75 16.75 7.13 16.50 3.38 1.31 4.500 1 x 1 x 7 1.13 13.00 8.63 17.75 2100 8.25 15.00.19 3.38 18.00 11.63 42.75 18.50 8.00 18.50 3.25 1.31 5.000 1¼ x 1¼ x 7½ 1.13 14.50 9.75 19.50 2110 9.06 17.00 32.81 3.50 19.75 13.50 46.50 19.50 8.38 19.88 4.75 1.06 5.500 1¼ x 1¼ x 8½ 1.25 16.25 10.25 20.50 2120/2125 9.88 18.75 36.06 3.63 22.50 15.25 15.13 52.25 21.00 9.13 21.50 7.25 4.00 1.06 6.000 1½ x 1½ x 9 1.25 18.00 11.00 22.25 21/2135 10.69 20.63 39.94 4.25 24.75 16.25 16.38 58.00 23.75 10.25 23.50 8.50 4.00 1.13 6.500 1½ x 1½ x 10 1.50 20.00 12.13 24.34 2140/2145 12.13 8.75 23.75 45.00 3.00 27.75 18.75 11.50 65.50.50 13.37.25 8.00 6.00 1.25 7.250 1¾x1¼ x 11 1.75 22.50 15.50.00 21.63 2150/2155 12.63 10.50 26.00 49.75 3.00 32.50 23.50 12.00 73.00 32.00 14.13.75 8.00 6.00 1.50 7.750 2 x 1 ½ x 12 1.75 25.00 16.25.50 23.88 DRIVE SIZE Wt lb Double Reduction Triple Reduction Quadruple Reduction A H. S. A H. S. H. S. O W Wt lb O W Wt W/O lb A O W Fan With Fan T Key W/O Fan With Fan T Key T Key 2050 470 2.38 1.50 23.38 31.88 1.500 3 /8 x 3 /8 x2½ 470 2.06 23.69 32.19 1.125 ¼ x ¼ x 2 1 /4 470 2.06 23.69 32.19 1.125 ¼ x¼x2 1 /4 2060 600 3.00 2.00 25.88 35.38 1.750 3 /8 x 3 /8 x 3 610 2.06 25.63 35.13 1.125 ¼ x ¼ x 2 1 /4 610 2.06 25.63 35.13 1.125 ¼ x¼x2 1 /4 2070 840 3.44 2.38.00 39.63 2.000 ½ x½x3½ 840 2.63 31.88 42.50 1.500 3/8 x 3 /8 x 2¾ 850 2.06 27.50 38.13 1.125 ¼ x¼x2 1 /4 2080 1240 3.81 2.88 33.50 45.63 2.250 ½ x½x4 1220 2.63 34.38 46.50 1.500 3/8 x 3 /8 x 2¾ 11 2.06.00 42.13 1.125 ¼ x¼x2 1 /4 2090 1750 3.43 2.50 35.00 48.38 2.250 ½ x ½ x 3½ 17 3.00 37.38 50.75 1.750 3/8 x 3 /8 x 3 1510 2.06 31.50 44.88 1.125 ¼ x¼x2 1 /4 2100 2110 4.63 3.38 40.63 55.63 2.750 5 /8 x 5 /8 x 4½ 2050 3.00 40.13 55.13 1.750 3/8 x 3 /8 x 3 2050 1.81 34.25 49.25 1.125 ¼ x¼x1 7 /8 2110 26 4.63 3.38 42.38 59.38 2.750 5 /8 x 5 /8 x 4½ 2600 3.44 43.75 60.75 2.000 ½ x½x3½ 2610 1.81 36.00 53.00 1.125 ¼ x¼x1 7 /8 2120/2125 3520 5.19 3.50 47.25 66.00 3.000 ¾ x ¾ x 5 3440 3.44 47.00 65.75 2.000 ½ x½x3½ 3510 2.63 43.63 62.38 1.500 3/8 x 3 /8 x2¾ 21/2135 4880 5.56 3.88 51.38 72.00 3.250 ¾ x ¾ x 5 4700 3.81 53.50 74.13 2.250 ½ x 1 /2 x 4 4750 2.63 46.88 67.50 1.500 3/8 x 3 /8 x2¾ 2140/2145 7420 5.75 4.00 59.25 83.00 3.500 7 /8 x 7 /8 x 5½ 7160 3.44 2.50 57.50 81.25 2.250 ½ x½x3½ 2150/2155 9060 6.56 5.00 65.13 91.13 4.000 1 x 1 x 6 8710 4.63 2.75 65.63 91.63 2.750 5/8 x 5 /8 x4½ Sizes 1080 through 1110 have foundation pads full length of base. diameters under 3 are held to limits of +.0000, -.0005. diameters 3 and over are held to limits of +.000, -.001. keyseat depth is one-half of key height. For YFT drive, reduce this dimension by ½. Dimension X is 10 ¾ for 2110YBT and 11½ for 2120/2125YBT. Dimension XX is 21 for 2110YBT, 23 5 / 8 for 2120/2125YBT and 24½ 21/2135YBT. for Drives are for horizontal floor mounted operation unless specifically stated otherwise. Refer to Factory for other mountings. Dimensions are for reference only and subject to change without notice unless certified. Double extension will be furnished only when specified on the order. Contact Factory Dimension B is 8 5 / 16 for 2110YBT; 9 3 / 8 for 2120/2125YBT and 10 5 / 16 for 21/2135YBT. Dimension A in the shaded area is also usable key length for fan cooled drives. Rexnord Industries, LLC, 1968, 2007. (241-110) 35

Type YB and YBT Dimensions Inches Right Angle Gear Drives Double & Triple Reduction Sizes 2160 through 2195 DRIVE SIZE B BA D E F G H J K L M N P Q R L.S. U V X XX Z S Key 2160/2165 13.81 13.00.38 44.88 3.00 18.50 56.38 13.75 83.50 36.00 15.88 33.00 19.50 7.25 1.88 8.500 2 x 1 1 /2 x13 2.00 16.25 18.25 33.75 27.63 2170/2175 15.06 14.50 33.12 49.38 3.00 21.00 61.88 15.00 92.50 38.50 16.88 35.50 21.00 7.75 1.88 9.250 2 1 /2 x1 3 /4 x 14 2.25 18.00 19.50 36.38.38 2180/2185 16.69 17.00 36.75 54.00 3.00 23.25 68.00 16.00 101.50 41.00 18.12 38.50 22.75 8.00 2.12 10.000 2 1 /2 x1 3 /4 x 15 2.25 19.50 21.00 39.50 33.50 2190/2195 18.69 18.50 40.25 60.25 3.50 26.25 75.38 17.50 113.00 45.00 19.75 42.00 25.25 8.50 2.38 11.000 2 1 /2 x1 3 /4 x 17 2.50 22.00 22.75 43.00 37.00 DRIVE SIZE Range Wt lb W/O Fan Double Reduction A With Fan O W H. S. T Key Range Wt lb W/O Fan A Triple Reduction With Fan O W T H. S. 2160/2165 5.06 thru 31.39 10,200 7.50 6.00 74.25 104.63 4.500 1 x 1 x 7½ 34.74 thru 194.6 10,000 4.63 3.38 71.38 101.75 2.750 5/8 x 5 /8 x4½ 15.44 thru 31.39 12,700 8.12 86.38 119.50 5.000 1¼x1¼x7½ 2170/2175 5.06 thru 13.95 13,000 8.12 6.50 81.00 114.12 5.000 1¼ x 1¼ x 7½ { 34.74 thru 194.6 12,500 5.19 79.25 112.38 3.000 ¾ x ¾ x 5 15.44 thru 31.39 2180/2185 5.06 thru 13.95 16,500 9.00 7.50 88.50 125.25 5.500 16,200 9.00 98.88 135.63 5.500 1¼ x1¼x8½ 1¼x1¼x8½ { 34.74 thru 194.6 16,000 5.56 86.38 123.12 3.250 ¾ x ¾ x 5 15.44 thru 21.39 21,200 9.63 2190/2195 5.06 thru 13.95 21,500 9.63 7.63 98.50 138.75 6.000 106.00 146.25 6.000 1½ x1½x9 1½x1½x9 { 34.74 thru 194.6 21,000 5.75 98.25 138.50 3.500 7/8 x 7 /8 x5½ Key Drives are for horizontal floor mounted operation unless specifically stated otherwise. Refer to Factory for other mountings. Dimensions are for reference only and are subject to change without notice unless certified. Drive sizes 2160 thru 2195 are also available with mounting level at bottom of drive. Double extension will be furnished only when specified on the order. diameters under 3 are held to limits of +.0000, -.0005. diameters 3 and over are held to limits of +.000, - 001. key seat depth is one-half of key height. Dimensions are for reference and subject to change without notice unless certified. Contact Factory. Dimension A in the shaded area is also usable key length for fan cooled drives. 36 (241-110) Rexnord Industries, LLC, 1968, 2007.

Motor Brackets for YB Series Gear Drives A Falk Steel Motor Bracket can be used on any gear drive application where the physical size of the motor is not larger than the drive. A Motor Bracket eliminates extra foundations and simplifies installation. Brackets bolt to the gear drive housing in much the same manner as on the universally popular UltraMax design. Housings are drilled and tapped for brackets only when drives are purchased with Falk motor brackets. The price includes drilling and tapping face of drive housing, an adapter, a bracket and mounting of the bracket. (Coupling is extra.) Motor brackets are not available for the 2000 GHB Series and 2140 YB and larger drives. To determine whether a motor bracket satisfies your motor application requirement, proceed as follows For 1964 Rerated NEMA Motor frames, refer to the top of Page 38 and select a motor bracket to suit the drive and motor frame size for the particular application. Bracket dimensions are shown at the bottom of the page. For 1953 Rerated NEMA, Non-NEMA, and Larger Motor Frames, contact Factory. Gap for YB Drives with Motor Brackets In general, motor bracket selections provide a gap between drive and motor shafts equal to the normal Falk Steelflex or gear coupling gaps as shown on Page 38. The table at right shows various combinations of drives and motors requiring shaft gaps larger than normal. In these cases it is necessary to overhang one or both coupling hubs; if the overhang with a standard hub results in less than one shaft diameter engagement, a coupling with extended hubs is recommended. Falk offers several types of flexible shaft couplings; the Steelflex Grid, the Lifelign Gear, the Wrapflex Elastomer, and the Freedom Disc. DRIVE/MOTOR SHAFT GAP INCHES (For combinations not listed, shaft gap and coupling gap is the same Drive Size Totally Enclosed Fan Cooled Motors Open Drip Proof Motors and 4 6 324 326 405 4 6 324 326 404 Reduction T TS T TS T TS T TS T TS T TS T TS T TS T TS T TS 2050 YB2 1.44 2.63 1.44 2.63 1.38 1.38 YB3 1.12 2.31 1.12 2.31 1.06 1.06 2060 YB2 1.19 2.38 1.19 2.38 1.12 1.12 YB3 1.44 2.63 1.44 2.63 1.38 1.38 2070 YB2 0.44 1.81 0.44 1.81 0.50 3.25.50 3.12 0.44 1.81 0.44 1.81 0.50 2.0 0.50 2.0 YB3 0.38 0.25 2080 YB2 1.31 1.31 2.75 2.63 1.00 1.31 1.31 1.50 1.50 0.50 YB3 0.44 0.44 1.88 0.44 0.44 0.63 2090 YB2 1.31 1.31 2.75 2.63 1.00 1.31 1.31 1.50 1.50 0.50 YB3 0.38 0.25 2100 YB2 1.25 1.12 YB3 0.31 0.31 1.75 1.63 0.31 0.31 0.50 0.50 2110 YB2 1.25 1.1 2 YB3 2120 YB2 2125 YB3 0.63 0.50 Rexnord Industries, LLC, 1968, 2007. (241-110) 37

Type YB Motor Bracket Selection and Dimensions MOTOR BRACKET SELECTIONS (For totally enclosed fan cooled and open drip proof motors.) Motor Frame Size 143T 145T 182T 184T 213T 215T 254T 256T 4T 4TS 6T 6TS 324T 324TS 326T 326TS 364T 364TS 365T 365TS 404T 404TS 405T 405TS HORSEPOWER AT RPM 1750 1170 870 1.00 1.50-2.00 3.00 5.00 7.50 10 15 20 25 25 40 40 50 50 60 60 75 75 100 100 100 125 100 125 125 150.75 1 1.50 2 3 5 7.50 10 15 15 20 20 25 25 40 40 50 50 60 60.50.75 1 1.50 2 3 5 7.50 10 10 15 15 20 20 25 25 40 40 50 50 Type YB2, Double Reduction 2050 2060 2070 2080 2090 2100 2110 19 19 21 21 22 22 23 23 24 24 24 24 19 19 21 21 22 22 23 23 24 24 24 24 25 25 26 26 27 27 25 25 26 26 27 27 31 31 25 26 26 27 27 31 31 75 60 31 31 27 27 27 31 31 DRIVE AND MOTOR BRACKET SIZE 27 27 31 31 2120 2125 31 21 2135 31 Type YB3, Triple Reduction 2050 2060 2070 2080 2090 2100 2110 19 19 21 21 22 22 23 23 24 24 24 24 19 19 21 26 25 21 22 22 23 23 24 24 24 24 26 27 27 26 26 27 27 31 31 26 27 27 31 26 27 27 75 60 31 31 31 31 31 31 31 31 31 31 31 444TS 100 75 32 32 32 32 32 32 32 32 32 445TS 150 200 125 100 32 32 Rating for open drip proof motor only. Rating for totally enclosed fan cooled motor only. For Type YB4 quadruple selections, contact Factory. 27 31 31 31 2120 2125 21 2135 31 31 BRACKET NUMBER DIMENSIONS INCHES 2050 2060 2070 2080 2090 2100 2110 2120/2125 21/2135 2050-2135 MB MC MB MC MB MC MB MC MB MC MB MC MB MC MB MC MB MC AC MA MD 19 3.31 35.44 4.31 37.69 5.25 7.00 3.63 20 21 2.81 35.50 3.81 37.75 5.25 9.00 4.63 22 2.25 38.50 3.25 40.75 6.00 10.50 5.38 23 1.06 43.25 2.06 45.50 7.06 12.50 6.38 24 0.25 46.13 1.25 48.38 7.88 14.00 7.13 25 3.75 41.06 5.00 45.06 6.50 46.56 5.56 9.00 4.63 26 4.25 43.88 5.50 47.88 7.50 49.38 8.50 53.50 6.19 10.50 5.38 27 3.25 48.75 4.50 52.75 6.00 54.25 7.50 58.38 9.25 60.13 7.13 12.50 6.38 2.50 51.88 3.75 55.88 5.25 57.38 6.75 61.50 8.50 63.25 10.25 67.25 12.25 71.63 8.69 14.00 7.13 1.38 54.38 2.63 58.38 4.13 59.88 5.63 64.00 7.38 65.75 9.13 69.75 11.13 74.13 8.88 16.00 8.13 0.25 59.38 1.75 60.88 3.25 65.00 5.00 66.75 6.75 70.75 8.75 75.13 10.56 18.00 9.13 31 62.38 0.25 63.88 1.75 68.00 3.50 69.75 5.25 73.75 7.25 78.13 12.25 20.00 10.13 32 66.13 1.06 70.25 2.44 72.00 4.19 76.00 6.19 80.38 12.44 22.00 11.13 SHIM DRIVE 1.50, then MB = 0.25. SHIM DRIVE 1.10, then MB = 0.19. Dimensions are for reference only and subject to change without notice unless certified. Dimension C depends on type, size, and make of motor. 38 (241-110) Rexnord Industries, LLC, 1968, 2007.

Bedplates for YB series gear drives A bedplate is recommended to insure proper alignment of the drive with the motor. Rexnord offers a complete line of fabricated steel Bedplates for all popular sizes of standard Type YB series gear drives. These bedplates accommodate any standard NEMA frame motor within the horsepower range of the gear drive and most of the larger non-nema frame motors. In addition, special bedplates can be manufactured to suit any given drive, motor, and special accessory combination. Versatile welded steel construction permits rapid modification of standard bedplates by addition or deletion. Supports for tachometers, brakes, timing devices, or other accessories can also be added. How to Select For standard NEMA Motor Frames: The Bedplate Size Code explained on Page 40 indicates the range of NEMA motor frames that are covered with the standard bedplates. Select a bed to suit the drive size, reduction, and motor frame size. For Non-NEMA Motor Frames: When a motor does not conform to NEMA standards, check motor mounting dimensions A, B, D, M, and N as follows to determine whether a standard Bedplate can be used. A. A standard bedplate can be used for a non-nema motor if ALL of the following conditions exist: 1. CB + BB equals or exceeds GAP + (N + M+ B/2 of motor), 2. CB equals or is less than GAP+(N+M B/2ofmotor), 3. 2AB equals or exceeds A of motor, 4. DB equals or exceeds D of motor. B. A standard gear drive section can be used with a special motor section when motor dimensions A and D do not exceed those shown in Table at right. C. If all of the conditions of A or B above cannot be met, a completely special bedplate is required; contact Factory. BEDPLATES TO ACCOMMODATE OUTBOARD BEARINGS ALSO AVAILABLE. APPROXIMATE BEDPLATE WEIGHTS POUNDS DRIVE SIZE 213 215 254 256 4 6 324 326 Motor Frame Size 364 365 404 405 444 445 504 505 583 588 2050 7 7 7 342 342 495 495 558 2060 423 423 423 459 459 504 504 567 2070 423 423 423 468 468 513 513 576 2080 675 675 675 675 810 810 810 8 864 2090 2100 2110 837 MAXIMUM MOTOR DIMENSIONS INCHES (For Special Motor Sections with Standard Drive Section) DRIVE SIZE Type YB and YB3 Series A D 2050 12.50 2060 12.50 2070 34 14.50 2080 34 14.50 2090 38 17.00 2100 38 17.00 2110 38 17.00 2120/2125 43 20.25 21/2135 43 21.25 2140/2145 49.5 25.75 2150/2155 49.5 26.75 For Type YB4, contact Factory. 837 837 1107 1071 837 1107 1071 972 1107 1071 972 1107 1071 972 1242 1206 990 1242 1206 1035 1188 1152 683 688 1476 1440 2120/2125 1458 1458 1458 1539 1692 1746 21/2135 1566 1566 1566 1647 1827 1890 2140/2145 2700 2700 2736 3114 2150/2155 2781 2781 17 3168 Rexnord Industries, LLC, 1968, 2007. (241-110) 39

Type YB Bedplate Selections and Dimensions DRIVE SIZE 2050 2052 or 2053 BEDPLATE SIZE CODE 21 3236 4044 5000 BEDPLATE DMENSIONS INCHES (BASED ON 1964 NEMA STANDARD) DRIVE MOTOR AB BB CB DB EB FB GB HB JB KB LB MB NB OB PB QB RB SB TB UB V VB WB XB Type YB O 7.50 9.50 23.00 18.50 4.81 7.06 5.31 9.06 8.63 8.63 25.75 15.00 33.63 33.63 4.00 4.50 67.63 60.88 18.75.25 4.75 8.50 1.75 2.00.13.13 34.00 27.00 20.75 20.75 4.63 6.63 13.75 1.75 1.00 1.00 8.00 6.63 4.75 5.75 YB2 YB3 12.19 11.88 23.38 23.69 2060 2060 or 2063 2070 2072 or 2073 2080 2082 or 2083 2090 2092 or 2093 2100 2102 or 2103 2110 2112 or 2113 2120 2125 21 2135 2140 2145 2150 2155 2122 or 2123 2132 or 2133 2142 or 2143 2152 or 2153 11.50 13.00 32.63.75 14.06 10.44 12.56 12.25 12.25 25.25 35.50 37.25 37.25 6.00 5.00 85.75 76.75 39.00.75 9.50 1.75 2.00 33.75 33.75 48.50 39.25.00.00 4.63 6.13 YB2 YB3 12.19 11.88 23.38 23.69 21 7.50 18.50 5.06 7.06 10.00 15.00 40.25 4.50 67.50 18.75 8.50 2.00 36.75 27.00 23.50 10.13 3236 4044 9.50 11.50 23.00.75 5.06 9.06 12.25 19.50 40.25 4.00 72.00 23.25 8.50 2.00 36.75 31.50.00 7.06 11.06 12.25 25.25 40.25 5.00 79.75.00 10.50 2.00 36.75 39.25.00 8.13 6.13 17.25 1.75 1.00 1.00 9.00 7.00 5.00 8.25 YB2 YB3 16.06 25.88 16.31 2563 5000 13.00 32.63 12.19 12.56 12.25 35.50 40.25 6.00 88.75 39.00 9.50 1.75 36.75 48.50.00 4.63 21 7.50 18.50 5.94 7.06 10.00 15.00 43.25 4.50 70.50 18.75 8.50 2.00 39.75 27.00 23.50 10.13 3236 4044 9.50 11.50 23.00.75 5.94 9.06 12.25 19.50 43.25 4.00 75.00 23.25 8.50 2.00 39.75 31.50.00 7.94 11.06 12.25 25.25 43.25 5.00 82.75.00 10.50 2.00 39.75 39.25.00 8.13 6.13 17.25 1.75 1.00 1.13 10.25 8.00 6.00 7.00 YB2 YB3 15.06.00 12.19 31.88 5000 13.00 32.63 13.06 12.56 12.25 35.50 43.25 6.00 91.75 39.00 9.50 1.75 39.75 48.50.00 4.63 2132 8.50 21.75 6.25 8.06 11.50 18.25 50.38 5.50 81.38 22.1 8.88 2.13 46.38.88 27.00 12.38 3644 5000 11.50 13.00.75 33.50 7.25 11.06 14.50 27.25 50.38 6.00 91.38 31.13 9.88 2.13 46.38 40.88 33.00 11.13 12.56 14.50.00 50.38 6.00 98.00 33.88 13.75 2.13 46.38 47.5 33.00 9.38 7.88 20.50 2.00 1.13 1.25 11.50 8.75 6.75 9.00 YB2 YB3 17.88 33.50 17.00 34.38 5800 15.00 35.38 17.13 14.56 14.50 38.88 50.38 6.00 105.88 43.00 12.50 2.00 46.38 55.50 33.00 5.88 2132 8.50 21.75 3.81 8.06 11.50 18.25 53.13 5.50 84.13 22.13 8.88 2.13 49.13.88 27.00 12.38 3644 5000 11.50 13.00.75 33.50 4.81 11.06 14.50 27.25 53.13 6.00 94.13 31.13 9.88 2.13 49.13 40.88 33.00 8.69 12.56 14.50.00 53.13 6.00 100.75 33.88 13.75 2.13 49.13 47.50 33.00 9.38 7.88 20.50 2.00 1.13 1.25 13.00 9.25 7.25 7.50 YB2 YB3 21.19 35.00 18.81 37.38 5800 15.00 35.38 14.69 14.56 14.50 38.88 53.13 6.00 108.63 43.00 12.50 2.00 49.13 55.50 33.00 5.88 40 11.00 25.50 4.88 10.06 12.75 21.00 59.75 6.50 94.88 25.88 9.25 2.63 55.25 34.75.00 14.13 4450 5800 13.00 15.00 35.50 34.50 7.88 12.56 16.25 31.00 59.75 6.00 107.88 35.88 12.25 2.63 55.25 47.75 37.00 11.63 14.13 14.56 16.25.75 59.75 6.00 112.88 34.63 18.50 2.63 55.25 52.75 37.00 9.63 24.25 2.25 1.25 1.50 14.50 10.25 7.75 9.75 YB2 YB3 21.25 40.63 21.75 40.13 6800 17.50 42.50 16.13 17.06 16.25 46.38 59.75 7.00 126.25 50.88 15.63 2.25 55.25 66.50 37.00 7.13 40 11.00 25.50 4.88 10.06 12.75 21.00 63.50 6.50 98.63 25.88 9.25 2.63 59.00 34.75.00 14.13 4450 5800 13.00 15.00 35.50 34.50 7.88 12.56 16.25 31.00 63.50 6.00 111.63 35.88 12.25 2.63 59.00 47.75 37.00 11.63 14.13 14.56 16.25.75 63.50 6.00 116.63 34.63 18.50 2.63 59.00 52.75 37.00 9.63 24.25 2.25 1.25 1.50 16.25 10.75 8.25 8.00 YB2 YB3 23.25 42.38 21.88 43.75 6800 17.50 42.50 16.13 17.06 16.25 46.38 63.50 7.00 1.00 50.88 15.63 2.25 59.00 66.50 37.00 7.13 3644 11.50.00 5.75 11.06 15.25 25.00 72.13 6.00 114.50.38 12.00 2.88 67.13 42.00 35.50 18.13 5000 5800 13.25 15.00 35.75 39.50 6.75 12.56 15.25.75 72.13 6.00 121.25 36.13 13.00 2.88 67.13 48.75 35.50 16.63 8.50 14.56 19.00 34.50 72.13 6.00 126.75 39.88 14.75 2.88 67.13 54.25 43.00 14.63.25 2.50 1.50 1.50 18.00 11.50 8.50 11.25 YB2 YB3.63 47.25.00 47.00 6800 17.50 43.25 14.00 17.06 19.00 38.25 72.13 7.00 136.00 43.63 20.25 2.88 67.13 63.50 43.00 12.13 3644 11.50.00 5.50 12.06 15.25 25.00 77.25 6.00 119.63.38 12.00 2.88 72.25 42.00 35.50 18.13 5000 5800 13.25 15.00 35.75 39.50 6.50 13.56 15.25.75 77.25 6.00 126.38 36.13 13.00 2.88 72.25 48.75 35.50 16.63 8.25 15.56 19.00 34.50 77.25 6.00 131.88 39.88 14.75 2.88 72.25 54.25 43.00 14.63.25 2.50 1.50 1.75 20.00 13.00 10.00 10.25 YB2 YB3.88 51.38 27.72 53.50 6800 17.50 43.25 13.75 18.06 19.00 38.25 77.25 7.00 141.13 43.63 20.25 2.88 72.25 63.50 43.00 12.13 4450 13.00 36.50 5.75 12.56 18.00 94.50 6.00 136.75 37.00 5.25 3.50 88.50 41.75 42.00 22.38 5800 15.50 39.25 8.00 14.56 18.00 94.50 6.00 141.75 39.75 7.50 3.50 88.50 46.75 42.00 20.38 35.00 3.00 1.75 2.00 22.50 16.50 13.00 12.50 YB2 YB3 31.63 33.50 59.25 6800 17.50 47.25 10.25 17.06 21.75 41.25 88.00 7.00 152.00 47.75 16.25 3.50 82.00 63.50 49.50 17.88 57.50 4450 13.00 36.50 5.50 13.56 18.00 101.00 6.00 143.25 37.00 5.25 3.50 95.00 41.75 42.00 22.38 5800 15.50 39.25 7.75 15.56 18.00 101.00 6.00 148.25 39.75 7.50 3.50 95.00 46.75 42.00 20.38 6800 17.50 47.25 10.00 18.06 21.75 41.25 94.50 7.00 158.50 47.75 16.25 3.50 88.50 63.50 49.50 17.88 For Types GHB1 and YB4 selections, contact Factory. Bedplates fit type S motors only with 504 thru 688 frames; all types U, US, S, T, and TS with smaller frames. 36.00 3.00 1.75 2.25 25.00 17.50 14.00 11.00 YB2 YB3 32.50 32.13 65.13 65.58 40 (241-110) Rexnord Industries, LLC, 1968, 2007.

Backstops A positive method of preventing Reverse Rotation Specify the Falk self-contained backstop for positive prevention of reverse rotation or backrun without backlash for conveyors, elevator head shafts, and similar applications. Grease-purged seals are standard; features are identical to grease-purged seals used on Falk gear drives. Available as a standard accessory for Falk drives only. The backstop is designed to operate during overrunning within a speed range of 400 to 1800 and for creep drives between 100 and 400 no more than one hour per month. For continuous speeds less than 400 or greater than 1800, refer application to Factory. The backstop can operate successfully on slope mounted applications up to a maximum shaft axis tilt of ±6 from horizontal; refer to Factory for other mountings. The backstop is designed to prevent reverse rotation five times or less in eight hours, with one minute or more in the overrunning direction between backstopping load applications. If backstopping operations are more frequent, or the time between operations is less than one minute, the backstop is classified as a working or indexing device and the application must be referred to Factory for selection. When ordering, specify rotation as determined when facing output shaft. L.S. End Clearance To prevent damage to backstops due to incorrect motor shaft rotation at start up, couplings are NOT assembled when drives are furnished with backstops. After completing the electrical connection, check motor and drive shaft rotations. Then complete alignment and assembly of coupling. DO NOT use Falk backstops in tandem. Refer to Factory all applications involving the need for two or more backstops in one system. DO NOT use the backstop as a substitute for a brake. H C 8 MINIMUM OUTLINE Z G 10 J K E F These housing dimensions are for reference in applications such as kiln drives where clearance at the low speed end of the drive housing is at a premium. The housing cover can be modified by the Factory (when specified) to provide additional clearance by cutting the cover to the minimum outline and adding lifting lugs as illustrated. L LIFTING LUGS DRIVE SIZE 2140 2145 2150 2155 2160 2165 2170 2175 2180 2185 2190 2195 TYPE YB and YBT CLEARANCE DIMENSIONS INCHES C E F G H J K L Z.25 9.25 14.13 1.50 26.44 1.50 7.00 3.19 21.63.25 9.75 15.25 1.50.69 1.50 7.00 3.19 23.88.50 11.25 17.63 1.50 32.94 1.50 7.00 3.19 27.63.50 11.50 18.69 1.50 36.69 1.75 9.38 4.19.38.50 12.50 20.13 1.50 40.19 1.75 9.38 4.19 33.50.50 13.50 21.50 1.50 43.69 1.75 9.38 4.19 37.00 Rexnord Industries, LLC, 1968, 2007. (241-110) 41

How to Order The following information is required to quote or ship to your requirements; PRIME MOVER (a) Type... motor, engine (b) Horsepower (c) Output speed (d) Mounting position if inclined. (e) Dimensions if Rexnord is to furnish a bedplate, or coupling. DRIVEN MACHINE (a) Kind agitator, kiln, etc. (b) Horsepower load (c) (d) Service Hours per day and reversals per minute, if reversing. Unless specifically stated otherwise on the purchase order, all drives (and backstops, if furnished) will be shipped with NLGI #2 grease in the seal housing cavities. GEAR DRIVE (a) TypeGHB, YB, and YBT (b) Input speed (c) Output speed (d) Mounting position (e) Drive with backstop: Assemblies and shaft rotations for right angle Types GHB and YB gear drives When ordering a drive with backstop, indicate which shaft extension backstop is to be mounted per Specifications 246-911. Also, indicate the overrunning direction of rotation, which is defined as clockwise or counterclockwise when facing the rotating end of the low speed shaft extension. (f) Ambient temperature (g) Assembly number see below. SHAFT CONNECTIONS (a) Coupling give shaft diameters and key sizes for Falk coupling (b) Other: overhung loads Give diameter and type of sheave, sprocket or pinion or thrust load, if any. Please specify from the plan views below, the desired assembly number. Overhung load capacities published on Pages thru 32 apply only to drive shaft extensions below the the heavy arrows. Contact Factory for overhung load capacity of opposite shaft extension (which is less). DRIVE SIZES Standard Assemblies (Standard s) Optional Assemblies 2050-2120 GHB1 2050-2195 YB2 2050-2195 YB3 2050-2070 YB4 L.S. SHAFT H. S. SHAFT L.S. SHAFT L.S. SHAFT GUARD END COVER OUTBOARD BEARING 2080-2135 YB4 L.S. SHAFT L.S. SHAFT L.S. SHAFT GUARD H.S. SHAFT END COVER OUTBOARD BEARING Contact Factory for overhung load ratings for low speed shafts without the heavy arrows and without outboard bearings. They are less than those published Availability of Rotations for Above Assemblies GHB1 Single Reduction YB2 Double Reduction YB3 Triple Reduction YB4 Quadruple Reduction 44 41 46 45 50 47 52 51 Std Std 54 53 ALL SIZES 42 41 44 43 46 45 48 47 50 51 Std. 52 53 Std. 54 ALL SIZES For counterclockwise high speed shaft rotation, reverse all arrows. 42 41 44 43 46 45 48 47 50 52 51 Std. 53 Std. 54 ALL SIZES SIZES 2050 thru 2070 41, 43, 45, 47, 49, (51 Std), 53 42,44,46,48,50, 52, (54 Std) SIZES 2080 thru 2135 41, 43, 45, 47, 49, 51, (53 Std) 42,44,46,48,50, (52 Std), 54 42 (241-110) Rexnord Industries, LLC, 1968, 2007.

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World Class Customer Service For more than 100 years, the dedicated people of Rexnord have delivered excellence in quality and service to our customers around the globe. Rexnord is a trusted name when it comes to providing skillfully engineered products that improve productivity and efficiency for industrial applications worldwide. We are committed to exceeding customer expectations in every area of our business: product design, application engineering, operations, and customer service. Because of our customer focus, we are able to thoroughly understand the needs of your business and have the resources available to work closely with you to reduce maintenance costs, eliminate redundant inventories and prevent equipment down time. Rexnord represents the most comprehensive portfolio of power transmission and conveying components in the world with the brands you know and trust. Rexnord, A+Plus, Drive One, Steelflex and Ram are registered trademarks of Rexnord Industries, LLC. Falk and Magnum Seal are trademarks of Rexnord. All rights reserved. Rexnord Industries, LLC, Gear Group, 01 West Canal Street, Milwaukee, WI 53208-4200 USA Phone: 866-REXNORD/866-739-6673 Fax: 414-643-3366 241-110 02/2007 Delzer Litho Printed in USA 2007 Rexnord Industries, LLC