L Jaw Type Couplings. Coupling Selection Example

Transcription

1 Coupling Selection Example A coupling is required to drive a pulp grinder from a 0 RPM, 20HP, 26TC motor approximately 6 hours per day. Motor shaft is 8 diameter with a 8 key and grinder shaft is 8 diameter with a 2 key. A. Determine the Service Factor Note from Table No. below that a pulp grinder is considered a Class U load but since it is to operate 6 hours per day, it must be classed as H and the service factor is 2 (see Table No. ) Table No. Class E Class U Class H Even Load Uneven Load Heavy Shock Load Agitators for liquids Beaters Boat propellers Blowers, centrifugal Compressors, centrifugal Compressors, reciprocating Conveyor, belt or chain Conveyors, Crushers smoothly loaded pulsating load Feeders, reciprocating Cranes Elevators, Machines, reversing pulsating load or impact loads Elevator Grinders, pulp Mills, hammer smoothly loaded Hoists Oil Well Pumping Units Fans, centrifugal Kilns and dryers Presses Generators Line shafts Pumps, simplex or uneven load duplex, reciprocating Line Shafts, even load Machines, Refuse hogs pulsating load, non-reversing Machines, uniform load Mills, ball, blooming, non-reversing pebble, tube Pumps, centrifugal Pumps, reciprocating Screens, uniformly fed Worm Gear speed reducers B. Determine the Design Horsepower Multiplying the motor horsepower (20) by the service factors (2), a coupling rated at 40 or more horsepower is required. C. Select the Coupling From Table No. 2, page 8-606, note that a L- 0 coupling with a urethane insert is satisfactory. D. Check Stock Bores to make sure Coupling size selected will accept required shafts From Table No., page -606, 8 diameter with a 8 key and 8 diameter with a 2 key are stock bore sizes. E. Order Coupling Components () L0 x 8 Hub (Part No. L0-62-) () L0 x 8 Hub (Part No. L0-8-00) () L0 Urethane Insert (Part No. L0-U) Table No. 2 *For 6 to 24 hrs. per day service use service factor for next higher class loading Source of Power Electric Steam Engine Diesel Class Characteristics of Driven Unit Motor or or Gasoline or Gas Steam Engine (4) or Engine Turbine more Cylinders E Even load - 8 hours per day service* non reversing - low torque starting 2 2 U Uneven Load - 8 hours per day service* Moderate shock or torsional loads No reversing (most common type of service) H Heavy Shock Load - 8 hours per day service* High peak torsional loads, reversing under load Full load starting Note: For even load, stand-by, seasonal or infrequent service the normal service rating of the coupling will determine its proper selection. 90 Trilex Fluid Power (PHONE) (FAX)

2 Insert Selection Type L Jaw Couplings are designed for applications in the light-to-medium duty range, with capacities and performance characteristics depending on the type of insert used. For maximum versatility in selection, four different insert materials are available to suit most applications. For proper selection refer to Table No. 2 below and Table No. 2 on page and to the following: Buna-N:This is the standard flexible insert material in Type L Jaw Couplings, serving the majority of applications. The material is an oil resistant rubber compound with excellent flexibility and shock absorption; temperature range -40 F to +22 F. Urethane:The urethane insert offers approximately 0% greater torque capacity than standard Buna-N, and in addition provides good chemical resistance. The temperature range is -0 F to +60 F. Hytrel:This tough flexible plastic material provides still greater torque capacity, approximately three times that of a standard Buna-N and superior temperature resistance with a range of -60 F to +20 F. Oil and chemical resistance are excellent. Bronze:This insert is intended exclusively for high torque, low speed applications, up to 20 RPM only. Capacities are three times those of the standard Buna-N. The material offers excellent resistance to oils, chemicals and extreme temperatures (-40 F to +40 F)..0" TYPE L JAW COUPLINGS PERMIT ANGULAR MISALIGNMENT UP TO AND PARALLEL MISALIGNMENT UP TO.0". Misalignment Capability Simplified Installation and Maintenance Since power is transmitted between the two halves of the Type L Jaw Coupling by the resilient insert, it is not necessary to have perfect alignment between the shafts. The elastomeric insert design permits angular misalignment up to (/2 for Hytrel and Bronze) and parallel misalignment up to.0, greatly simplifying installation in all types of industrial applications. Maintenance is minimal; the insert can be visually inspected and never needs lubrication. The coupling can continue to transmit power even if the elastomer insert becomes severy damaged or destroyed-minimizing downtime and increasing reliability. Table No. 2 Material Flexibility Shock Oil Chemical Temperature Angular Parallel Absorption Resistance Resistance Range ( F) Misalignment Misalignment Buna-N Excellent Excellent Good -40 to 22.0 Urethane Good Good Good Good -0 to 60.0 Hytrel Fair Fair Excellent Excellent -60 to 20 /2.0 Bronze Excellent Excellent -40 to 40 /2.00 Trilex Fluid Power (PHONE) (FAX)

3 C C A E A Table No. B TYPE L Jaw Type Coupling Dimensional Information Coupling Hubs Inserts Coupling Dimensions in Inches WT-LBS. Buna-N Urethane Hytrel WT. Bronze WT Size Type A B C D E Min. Bore Max. Bore Part No. Part No. Part No. LBS. Part No. LBS. L L0N* L L00N* - L00H +.0 L00B.0 L L00N + L00U + L00H +.0 L00B. L L0N + L0U* L0H*.0 L0B. L L090/09N* L090/09U* L090/09H*.0 L090/09B.29 L L090/09N* L090/09U* L090/09H*.0 L090/09B.29 L L099/00N + L099/00U* L099/00H +.0 L099/00B.4 L L099/00N + L099/00U* L099/00H +.0 L099/00B.4 L L0N + L0U + L0H*. L0B.69 L L0N + L0U + L0H +.24 L0B.0 L L90N + L90U + L90H +.28 L90B.64 L L22N + L22U + L22H +. L22B 2.24 *Solid Center Table No. 2 L Jaw Type Coupling Performance Data + Open Center Insert Coupling Maximum Maximum* Torque Horsepower at Indicated speeds (RPM) Material Size Bore RPM IN-LBS L0 8, L00 8 8, L00 4 4, L0 8, L090 9, BUNA-N L09 8 9, L099 6, L00 8, L0 8, L0 8, L90 2 8, L , L00 4 4, L0 8, L090 9, L09 8 9, Urethane L099 6, L00 8, L0 8, L0 8, L90 2 8, L , L00 8 8,000* L00 4 4,000* L0 8,000* L090 9,000* Hytrel L09 8 9,000* and L099 6,000* Bronze L00 8,000* L0 8,000* L0 8,000* L90 2 8,000* L ,200* D B TYPE 2 Note: couplings with bronze inserts limited to 20RPM D 92 Trilex Fluid Power (PHONE) (FAX)

4 Standard Inch Bore Jaw Couplings Bore Keyway L0 L00 L00 L0 L090 L09 L099 L00 L0 L0 L90 L22 8 No KW L No KW L No KW/No SS L NS L NS L0-020-NS L NS 4 No KW L L L L x 6 L No KW L L L L No KW L L L L L x 64 L L L x 6 L L0-0-2 L No KW/No SS L09-04-NS 6 No KW L L L L L L x 64 L L L L L L x 6 L L L L L L No KW/No SS L0-000-NS L NS L NS 2 No KW L L L L L L L x 6 L L L L L L L No KW L L L L L L x 6 L L L L L L L No KW/No SS L NS L0-062-NS L0-062-NS L NS L NS 8 No KW L L L L x 64 L L L L L L L L x 2 L L L L L L L L x 2 L L L L L L L L No KW L L x 6 L L L L L L L L x 2 L L L L L L L L L x 2 L L L L L L L L L x 2 L L L L L L L L L x 8 L L L L L L L L x 8 L L L L L L L x 2 L L L L L L L L x 8 L L L L L L L L x 8 L L L L L L L x 8 L L L L L L L x 8 L L L L L L x 8 L L L L L x 2 L L L L L x 2 L L0-2-2 L0-2-2 L L x 2 L00--2 L0--2 L0--2 L90--2 L x 6 L0-- L0-- L90-- L x 6 L00-4- L0-4- L0-4- L90-4- L x 2 L L L L x 6 L0-00- L0-00- L L x 6 L0-6- L0-6- L90-6- L x 6 L0-62- L0-62- L L x 6 L0-68- L L x 6 L0-0- L90-0- L x 2 L0-0-4 L L x 4 L x 4 L L L x 4 L L x 4 L L x 4 L x 4 L L x 4 L x 4 L x 6 L Additional inch sizes available- consult factory Trilex Fluid Power (PHONE) (FAX)

5 Standard Metric Bore Jaw Couplings Bore Keyway L00 L0 L090 L09 L099 L00 L0 L0 L90 L22 4mm No KW mm No KW 6mm No KW mm No KW 8mm No KW 9mm x.4 0mm No KW 0mm x.4 mm 4 x.8 2mm No KW 2mm 4 x.8 4mm No KW 4mm x 2. L0-M04-0 L09-M04-0 L00-M04-0 mm No KW L00-M0-00 mm x 2. L0-M0-0 L090-M0-0 L09-M0-0 L00-M0-0 6mm x 2. L00-M06-0 L0-M06-0 L09-M06-0 L099-M06-0 L00-M06-0 mm x 2. L00-M0-0 8mm 6 x 2.8 L099-M08-06 L00-M08-06 L0-M mm No KW 9mm 6 x 2.8 L00-M09-06 L0-M09-06 L09-M09-06 L099-M mm 6 x 2.8 L09-M L099-M L00-M L0-M mm 6 x mm 8 x. L090-M L099-M L00-M L0-M mm 8 x. L090-M02-08 L00-M02-08 L0-M02-08 L0-M mm No KW 28mm 8 x. L09-M L099-M L00-M L0-M mm 8 x. 2mm No KW 2mm 0 x. L00-M02-0 L0-M02-0 L22-M02-0 mm No KW mm 0 x. L00-M0-0 8mm 0 x. L0-M08-0 L0-M mm 2 x. L0-M040-2 L90-M040-2 L22-M mm 2 x. L0-M042-2 L0-M mm 4 x.8 48mm No KW L90-M mm 4 x.8 L0-M048-4 L90-M mm No KW 0mm 4 x.8 mm No KW mm 6 x 4. L22-M0-6 60mm No KW 60mm 8 x 4.4 L22-M mm No KW 6mm 8 x 4.4 L22-M06-8 0mm 20 x 4.9 Additional metric sizes available- consult factory Standard Spline Bore Jaw Couplings Number SAE Shaft Teeth Pitch Major Dia. L090 L09 L099 L00 L0 L0 L90 L22 9 6/2 A.62 L L L L /2 B.8 L090-6 L09-6 L099-6 L00-6 L0-6 L-0-6 L90-6 6/2 D, E.0 L0-08 L-0-08 L90-08 L /24 C.20 L0-42 L-0-42 L90-42 L /2 BB.000 L099-6 L00-6 L0-6 L-0-6 L90-6 L22-6 Additional spline size available - Consult factory. All splines are SAE 0 pressure angle, flat root, side fit 94 Trilex Fluid Power (PHONE) (FAX)