Synchronous Drives. AutomatedPT, LLC

Transcription

1 A L T R A I N D U S T R I A L O T I O N Synchronous Drives AutomatedPT, LLC

2 TB Wood's TB Wood s is an industry leading designer and manufacturer of mechanical power transmission equipment for industrial control. Our mechanical product lines include: clutch and brake, synchronous and belted variable speed drives; grid, disc, jaw, gear coupling and elastomeric coupling products; sheaves and bushings. Registered trademarks include Surelex Plus, Duralex, Glex, and SureGrip. TB Wood s was founded in 857 and began as a foundry producing wood burning stoves. Our company s tradition of product innovation started early. TB Wood s entered the power transmission industry at the turn of the century with the introduction of flat belted drives and line shafting. VISIT US ON TH WB AT TBWOODS.CO Altra Industrial otion Altra is a leading global designer and manufacturer of quality power transmission and motion control products utilized on a wide variety of industrial drivetrain applications. Altra clutches and brakes, couplings, gearing and PT component product lines are marketed under the industries most well known manufacturing brands. ach brand is committed to the guiding principles of operational excellence, continuous improvement and customer satisfaction. Highlyengineered Altra solutions are sold in over 7 countries and utilized in a variety of major industrial markets, including food processing, material handling, packaging machinery, mining, energy, automotive, primary metals, turf and garden and many others. Altra s leading brands include Ameridrives, Bauer Gear otor, Bibby Turboflex, Boston Gear, Delroyd Worm Gear, ormsprag Clutch, Guardian Couplings, Huco, Industrial Clutch, Inertia Dynamics, Kilian, Lamiflex Couplings, arland Clutch, atrix, Nuttall Gear, Stieber Clutch, Stromag, Svendborg Brakes, TB Wood s, Twiflex, Warner lectric, Warner Linear and Wichita Clutch. VISIT US ON TH WB AT ALTRAOTION.CO

3 Wood s SureGrip QD Bushings A Provide a True Clamp it Are asy to Install and Remove Permit ourway ounting P686TBW 4/7... TB Wood s A

4 SureGrip Bushings eatures SureGrip Quick Detachable bushings are easy to install and remove. They are split through flange and taper to provide a true clamp on the shaft that is the equivalent of a shrink fit. All sizes except JA and QT have a setscrew over the key to help 6hole drilling (most sizes) makes installation and removal quick and easy. Keyseat 8 from split. Precise taper (3/4 in. per ft. on diameter) provides proper wedging action. Saw cut through flange and taper (and sometimes cut down into keyway also) to provide a true clamp fit. Cap screws used to secure bushings to sheave and to remove bushing from sheave. maintain the bushing s position on the shaft until the cap screws are securely tightened. SureGrip bushings have a very gradual taper (3/4inch taper per ft. on the diameter) which is about half the inclined angle of many other bushings. The result is the SureGrip securely clamps the shaft, with twice the force of those competitive bushings, to provide extreme holding power. Versatile SureGrip bushings permit the mounting of the same mating part on shafts of different diameters, and the mounting of different sheaves on the same shaft using the same bushing. Their interchangeability extends through sheaves, pulleys, timing pulleys, sprockets, flexible and rigid couplings, madetoorder items by Wood s, and to product lines of several other mechanical power transmission manufacturers. SureGrip bushings are manufactured with the drilled and tapped holes located at a precise distance from the keyseat; thus, a wide mating part having a bushing in each end can be mounted on a common shaft with the two keyways in line. This feature not only facilitates installation but also permits both bushings to carry an equal share of the load. STANDARD OUNTING RVRS OUNTING. Cap screws from outside through drilled holes in the mating part and into threaded holes in the bushing flange located on the inside of the assembly. Or the complete as sembly reversed on the shaft and; 2. Cap screws from inside through drilled holes in the mating part and into threaded holes in the bushing flange located on the outside of the assembly. 3. Cap screws from inside through drilled holes in the bushing flange located on the inside of the as sembly and into threaded holes in the mating part. 4. Cap screws from outside through drilled holes in the bushing flange located on the outside of the as sembly and into threaded holes in the mating part. A2 TB Wood s P686TBW 4/7

5 SureGrip Bushings Dimensions SureGrip bushings are designed to transmit the rated torque capacity listed in the table below when the cap screws are tightened as indicated. The bushings are stocked in all popular bore sizes, including metric bores, within the bore range for a particular bushing. L D B Bushing QT Bushings JA to J inclusive w/ Setscrew xcept JA Bushings to S inclusive w/setscrew A 3/4" taper per ft. on diameter SURGRIP BUSHING TORQU RATINGS AND DINSIONS Bush. Torque Capacity (In.Lbs.) (Note ) ax. Bore (Note 2) ax. Bore DINSIONS IN INCHS A B D * L Bolt Circle Cap Screws Required QT JA SH SDS SD,75,75 3,5 5, 5, 4 5/8 5/6 5/ /4 5/6 3/8 7/6 7/ /6 33/6 33/6 /6 7/8 7/8 3/8 7/8 9/6 3/6 3/4 /4 /4 /4 5/6 3/6 2 2/32 2/4 2/6 2/6 2/4 x 3 # x 3/4 x 3/8 3/4 x 3/8 3/4 x 7/8 SK S J 7,, 2, 4, 55, 2 25/6 3 35/ /4 3/ /8 45/8 6 65/8 7/4 3/8 7/8 23/6 3 /4 /4 5/8 2 33/6 7/8 2 25/8 35/8 4 35/6 37/8 5 55/8 6/4 35/6 x 2 33/8 x 2 3 x 23/4 39/6 x 35/8 35/8 x 4 N P W S 25, 5, 25, 375, 625, /4 3/4 2 3/ /8 3/4 5 73/4 5 65/8 75/8 93/8 2 53/6 6/4 7/ /4 8/8 93/8 3/8 53/4 77/8 8 23/4 5 43/4 x 63/4 47/8 x 8 4 x 9 4 /8 x 5 /4 x 5 * ating hub length.. AX INCH BOR WITH KYSAT. 2. AX BOR WITH STANDARD KYSAT. See pages A 4 to A 8 for Bore and Keyseat information and weights. P686TBW 4/7... TB Wood s A3

6 SURGRIP BUSHINGS Bore and Key Seat Dimensions SureGrip Bushings are available from stock with all the bores and keyseats listed below. In some cases, as the bore increases in diameter, a shallow keyseat is provided due to insufficient metal thickness. When this happens, Wood s furnishes the correct rectangular key to suit at no charge. This does not affect the bushing s ability to transmit the load. The rectangular key, or flat key as some call it, fits into the standard keyway in the shaft. DINSIONS (In Inches) Product Bore Key Seat Wt. (*) Product Bore Key Seat Wt. (*) Product Bore Key Seat Wt. (*) QT BUSHINGS SH BUSHINGS (continued) SD BUSHINGS (continued) QTPB QT2 QT9/6 QT58 QT/6 QT34 QT3/6 QT78 QT5/6 QT QT6 QT8 QT36 QT4 QT56 QT38 QT76 QT2 JAPB JA2 JA9/6 JA58 JA/6 JA34 JA3/6 JA78 JA5/6 JA JA6 JA8 JA36 JA4 SHPB SH2 SH9/6 SH58 SH/6 SH34 SH3/6 SH78 SH5/6 SH 7/6 9/6 5/8 /6 3/4 3/6 7/8 5/6 /6 /8 3/6 /4 5/6 3/8 7/6 JA BUSHINGS 9/6 5/8 /6 3/4 3/6 7/8 5/6 /6 /8 3/6 /4 SH BUSHINGS 7/6 9/6 5/8 /6 3/4 3/6 7/8 5/6 * Approximate weight in lbs. No KS /8 x /6 /8 x /6 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x /6 5/6 x /6 3/8 x /6 3/8 x /6 No KS /8 x /6 /8 x /6 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 /4 x /8 /4 x /8 /4 x /6 /4 x /6 /4 x /6 /4 x /32 No KS /8 x /6 /8 x /6 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 /4 x /8 /4 x / SH6 SH8 SH36 SH4 SH56 SH38 SH76 SH2 SH96 SH58 /6 /8 3/6 /4 5/6 3/8 7/6 9/6 5/8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 5/6 x 5/32 3/8 x /6 3/8 x /6 3/8 x /6 3/8 x / SH6 /6 No KS.5 SDSPB SDS2 SDS9/6 SDS58 SDS/6 SDS34 SDS3/6 SDS78 SDS5/6 SDS SDS6 SDS8 SDS36 SDS4 SDS56 SDS38 SDS3838KS SDS76 SDS2 SDS96 SDS58 SDS6 SDS34 SDS36 SDS78 SDS56 SDS2 SDPB SD2 SD9/6 SD58 SD/6 SDS BUSHINGS 7/6 9/6 5/8 /6 3/4 3/6 7/8 5/6 /6 /8 3/6 /4 5/6 3/8 3/8 7/6 9/6 5/8 /6 3/4 3/6 7/8 5/6 2 SD BUSHINGS 7/6 9/6 5/8 /6 PB Bushings are unsplit. No KS /8 x /6 /8 x /6 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 5/6 x 5/32 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x /8 x /8 x /6 x /6 No KS No KS /8 x /6 /8 x /6 3/6 x 3/32 3/6 x 3/ SD34 SD3/6 SD78 SD5/6 SD SD6 SD8 SD36 SD4 SD56 SD38 SD3838KS SD76 SD2 SD96 SD58 SD6 SD34 SD36 SD78 SD56 SD2 SKPB SK2 SK9/6 SK58 SK/6 SK34 SK3/6 SK78 SK5/6 SK SK6 SK8 SK36 SK4 SK56 SK5638KS SK38 SK3838KS SK76 SK2 SK96 SK58 SK6 SK34 SK342KS 3/4 3/6 7/8 5/6 /6 /8 3/6 /4 5/6 3/8 3/8 7/6 9/6 5/8 /6 3/4 3/6 7/8 5/6 2 SK BUSHINGS 7/6 9/6 5/8 /6 3/4 3/6 7/8 5/6 /6 /8 3/6 /4 5/6 5/6 3/8 3/8 7/6 9/6 5/8 /6 3/4 3/4 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 5/6 x 5/32 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x /8 x /8 x /6 x /6 No KS No KS /8 x /6 /8 x /6 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 3/8 x 3/6 5/6 x 5/32 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 x / (Continued next page) A4 TB Wood s P686TBW 4/7

7 SureGrip Bushings Bore and Key Seat Dimensions Product Bore Key Seat SK36 SK78 SK56 SK2 SK26 SK28 SK236 SK24 SK2458KS SK256 SK238 SK276 SK22 SK296 SK258 SPB S2 S58 S34 S78 S5/6 S S6 S8 S36 S4 S56 S38 S3838KS S76 S2 S96 S58 S6 S34 S36 S78 S56 S2 S26 S28 S236 S24 S2458KS S256 S238 S276 S22 S296 S258 S26 S234 S278 S256 SK BUSHINGS (continued) 3/6 7/8 5/6 2 2/6 2/8 23/6 2/4 2/4 25/6 23/8 27/6 2 29/6 25/8 S BUSHINGS 5/8 3/4 7/8 5/6 /6 /8 3/6 /4 5/6 3/8 3/8 7/6 9/6 5/8 /6 3/4 3/6 7/8 5/6 2 2/6 2/8 23/6 2/4 2/4 25/6 23/8 27/6 2 29/6 25/8 2/6 23/4 27/8 25/6 x /4 x /4 x /4 x /4 x /4 x /4 x /8 x /8 5/8 x /8 5/8 x /6 5/8 x /6 5/8 x /6 5/8 x /6 No KS No KS No KS /8 x /6 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 5/6 x 5/32 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 x /4 x /4 x /4 x /4 x /4 x /4 x /4 x /4 5/8 x 5/6 5/8 x 3/6 5/8 x 3/6 5/8 x 3/6 5/8 x 3/6 5/8 x /6 5/8 x /6 5/8 x /6 5/8 x /6 3/4 x /6 3/4 x /32 Wt. (*) DINSIONS (In Inches) Product Bore Key Seat PB 78 5/ / KS KS PB BUSHINGS 7/8 7/8 5/6 /8 3/6 /4 5/6 3/8 3/8 7/6 9/6 5/8 /6 3/4 3/6 7/8 5/6 2 2/6 2/8 23/6 2/4 2/4 25/6 23/8 27/6 2 29/6 25/8 2/6 23/4 23/6 27/8 25/6 3 3/8 33/6 3/4 35/6 33/8 37/6 3 BUSHINGS /8 3/6 /4 3/8 7/6 9/6 5/8 No KS 3/6 x 3/32 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 5/6 x 5/32 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 x /4 x /4 x /4 x /4 x /4 x /4 x /4 x /4 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 3/4 x 3/8 3/4 x 3/8 3/4 x /8 3/4 x /8 3/4 x /8 3/4 x /8 3/4 x /8 7/8 x /6 7/8 x /6 7/8 x /6 7/8 x /6 No KS /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 Wt. (*) Product Bore Key Seat KS JPB J76 J2 J96 J6 J34 J78 J56 J2 J28 J236 J24 J256 J238 J276 J22 J258 J26 J234 J278 BUSHING (continued) 3/4 7/8 5/6 2 2/6 2/8 23/6 2/4 2/4 25/6 23/8 27/6 2 29/6 25/8 2/6 23/4 23/6 27/8 25/6 3 3/8 33/6 3/4 35/6 33/8 37/6 3 35/8 3/6 33/4 37/8 35/6 4 J BUSHINGS 7/6 7/6 9/6 /6 3/4 7/8 5/6 2 2/8 23/6 2/4 25/6 23/8 27/6 2 25/8 2/6 23/4 27/8 3/8 x 3/6 x /4 x /4 x /4 x /4 x /4 x /4 x /4 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 7/8 x 3/6 7/8 x 3/6 7/8 x 3/6 7/8 x 3/6 7/8 x 3/6 7/8 x 3/6 7/8 x 3/6 x /8 x /8 No KS No KS 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 x /4 x /4 x /4 x /4 x /4 x /4 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 3/4 x 3/8 Approximate weight in lbs. PB Bushings are unsplit. (Continued next page) Wt. (*) P686TBW 4/7... TB Wood s A5

8 SureGrip Bushings Bore And Key Seat Dimensions DINSIONS (In Inches) Product Bore Key Seat Wt. (*) Product Bore Key Seat Wt. (*) Product Bore Key Seat Wt. (*) J BUSHINGS (continued) BUSHINGS (continued) P BUSHINGS (continued) J256 J3 J38 J336 J34 25/6 3 3/8 33/6 3/4 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/ /6 43/4 47/8 45/6 x /4 x 5/8 /4 x 5/8 /4 x /4 /4 x / P434 P478 P456 P5 P536 43/4 47/8 45/6 5 53/6 /4 x 5/8 /4 x 5/8 /4 x 5/8 /4 x 5/8 /4 x 5/ J356 J338 J376 J32 J358 35/6 33/8 37/6 3 35/8 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 7/8 x 7/ /6 5/4 57/6 5 /4 x /4 /4 x /4 /4 x /4 /4 x /4 /4 x / P54 P556 P538 P576 P52 5/4 55/6 53/8 57/6 5 /4 x 5/8 /4 x 5/8 /4 x 5/8 /4 x 5/8 /4 x 5/ J36 J334 J336 J378 J356 J4 J48 J436 J44 J438 J476 J /6 33/4 33/6 37/8 35/6 4 4/8 43/6 4/4 43/8 47/6 4 7/8 x 7/6 7/8 x 7/6 x x 3/8 x 3/8 x /8 x /8 x /8 x /8 x /8 x /8 x /8 BUSHINGS 5/6 2 23/6 2/4 23/8 27/6 2 25/8 2/6 23/4 27/8 25/6 3 3/8 33/6 3/4 33/8 37/6 3 35/8 3/6 33/4 37/8 35/6 4 4/8 43/6 4/4 43/8 47/6 x /4 x /4 x /4 x /4 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 x x x x x x x x N256 N3 N338 N376 N32 N358 N334 N378 N356 N4 N436 N44 N438 N476 N42 N458 N434 N478 N456 N5 N536 N576 N52 N578 N556 P256 P34 P376 P32 P358 P334 P378 P356 P4 P44 P438 P476 P42 P458 P46 N BUSHINGS 25/6 3 33/8 37/6 3 35/8 33/4 37/8 35/6 4 43/6 4/4 43/8 47/6 4 45/8 43/4 47/8 45/6 5 53/6 57/6 5 57/8 55/6 3/4 x 3/8 3/4 x 3/8 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 x x x x x x x x P BUSHINGS 25/6 3/4 37/6 3 35/8 33/4 37/8 35/6 4 4/4 43/8 47/6 4 45/8 4/6 /4 x 5/8 /4 x 5/8 /4 x 5/8 /4 x 5/8 /4 x 5/8 /4 x /4 /4 x /4 /4 x /4 x /4 x /8 3/4 x 3/8 3/4 x 3/8 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 7/8 x 7/6 x x x x x x x /4 x 5/8 /4 x 5/ P534 P578 P556 P6 P66 P64 P676 P62 P634 P7 W44PB W478PB W54PB W578PB W62PB W74PB W734 W82 S6PB S8PB S9PB 53/4 57/8 55/6 6 6/6 6/4 67/6 6 63/4 7 W BUSHINGS 4/4 47/8 5/4 57/8 6 7/4 73/ x 3/4 x 3/4 x 3/4 x /4 x /4 x /4 x /4 x /4 3/4 x /8 3/4 x /8 2 x /4 2 x /4 S BUSHINGS PB bushings are unsplit. * Approximate weight in lbs. A6 TB Wood s P686TBW 4/7

9 SureGrip Bushings With etric Bore and Keyseat DINSIONS (In mm) Bore And Key Seat Dimensions Product Bore (mm) Key n Wt. (*) Product Bore (mm) Key n Wt. (*) Product Bore (mm) Key n Wt. (*) QT4 QT5 QT6 QT8 QT9 QT2 QT22 QT24 QT25 QT28 QT3 QT32 QT35 QT38 JA5 JA6 JA9 JA2 JA24 JA25 JA28 SH24 SH25 SH28 SH3 SH32 SH35 SDS24 SDS25 SDS28 SDS3 SDS32 SDS35 SDS38 SDS4 SDS42 QT BUSHINGS x 5 5 x 5 5 x 5 6 x 6 6 x 6 6 x 6 6 x 6 8 x 7 8 x 7 8 x 7 8 x 7 x 6 x 6 x 6 JA BUSHINGS x 5 5 x 5 6 x 6 6 x 6 8 x 6 8 x 6 8 x 5 SH BUSHINGS x 7 8 x 7 8 x 7 8 x 7 x 8 x 8 SDS BUSHINGS x 7 8 x 7 8 x 7 8 x 7 x 8 x 8 x 8 2 x 8 2 x 8 SD BUSHINGS SK24 SK25 SK28 SK3 SK32 SK35 SK38 SK4 SK42 SK45 SK48 SK5 SK55 S28 S3 S32 S35 S38 S4 S42 S45 S48 S5 S55 S6 S SK BUSHINGS x 7 8 x 7 8 x 7 8 x 7 x 8 x 8 x 8 2 x 8 2 x 8 4 x 9 4 x 9 4 x 9 6 x S BUSHINGS BUSHINGS x 7 8 x 7 x 8 x 8 x 8 2 x 8 2 x 8 4 x 9 4 x 9 4 x 9 6 x 8 x 8 x 8 x 8 x 8 2 x 8 2 x 8 4 x 9 4 x 9 4 x 9 6 x 8 x 8 x 2 x 2 2 x 2 22 x J5 J55 J6 J65 J7 J75 J8 J85 J9 J95 J N N2 BUSHINGS x 9 4 x 9 4 x 9 6 x 8 x 8 x 2 x 2 2 x 2 22 x 4 22 x 4 25 x 4 J BUSHINGS x 9 6 x 8 x 8 x 2 x 2 2 x 2 22 x 4 22 x 4 25 x 4 25 x 4 28 x 6 BUSHINGS x 4 25 x 4 28 x 6 32 x 8 N BUSHINGS 2 28 x 6 32 x 8 P BUSHINGS P x SD24 SD25 SD28 SD3 SD32 SD35 SD38 SD4 SD x 7 8 x 7 8 x 7 8 x 7 x 8 x 8 x 8 2 x 8 2 x Approximate weight in lbs. n The metric system does not refer to keyseat or keyway dimensions as does the nglish system; instead, dimensions are given for the key itself, which is rectangular in shape and not square as in the nglish system. This meets ISO standards. SHALLOW KY URNISHD P686TBW 4/7... TB Wood s A7

10 SA SureGrip L Series langeless Bushings Bush. Torque Capacity (In.Lbs.) Type aterial ax. Bore (In.) ax. Bore (In.) DINSIONS IN INCHS B Bolt Circle Cap Screws Required SKL 7, D.I. 5/ /8 23/8 3/4 x 3/4 SL, D.I. 23/ /8 23/4 4/4 x 3/4 L 2, D.I. 27/ /8 45/6 x 3/4 L 45, D.I. 3/ /8 33/4 43/8 x 2 B BUSHING SKL TAPR.75 IN 2 ON DIA. BUSHINGS SKL TO L Patent 534 To Install: IPORTANT: DO NOT US LUBRICANTS IN THIS INSTALLATION. Inspect shafts, bushing, and mating hub. Remove all nicks, paint, dirt, grease, etc. from mating surfaces. 2. Place key in shaft s keyseat. 3. Slide bushing onto shaft and key. Small nd of Taper ust Be Outboard. 4. Slide tapered mating hub over bushing. Align () the shaft key with one of the slots in the mating hub and (2) the drilled holes in mating hub with the threaded holes in the bushing. 5. Put lockwashers on cap screws and insert one cap screw thru each drilled hole in the mating hub and into the threaded hole in the bushing. 6. Use a Torque Wrench. Tighten all cap screws evenly and progressively in rotation. Torque around all the cap screws as often as necessary until the listed torque value remains on each cap screw. To Remove:. Loosen and remove all cap screws from assembly. 2. Install one cap screw in each threaded hole in the mating hub. 3. venly torque each cap screw in rotation to force the mating hub off the bushing. Bushing Torque (t.lbs.) SKL 5 SL 5 L 3 L 55 CAUTION The use of lubricants or excessive wrench torques may cause hub stresses high enough to break the mating hub! A8 TB Wood s P686TBW 4/7

11 SA SureGrip L Series langeless Bushings DINSIONS (In Inches) Bore And Keyseat Dimensions Product Bore Key Seat Wt. (*) Product Bore Key Seat Wt. (*) Product Bore Key Seat Wt. (*) SKL BUSHINGS SL BUSHINGS L BUSHINGS SKLPB SKL2 SKL58 SKL34 SKL78 SKL5/6 SKL SKL8 SKL36 SKL4 SKL56 SKL38 SKL76 SKL2 SKL96 5/8 3/4 7/8 5/6 /8 3/6 /4 5/6 3/8 7/6 9/6 PB* /8 x /6 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 5/6 x 5/32 3/8 x 3/6 3/8 x 3/6 3/8 x 3/ SL2 SL96 SL58 SL6 SL34 SL36 SL78 SL56 SL2 SL28 SL236 SL24 SL256 SL238 9/6 5/8 /6 3/4 3/6 7/8 5/6 2 2/8 23/6 2/4 25/6 23/8 L BUSHINGS 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 x /4 x /4 x /4 x /4 x /4 x /4 x /4 5/8 x 5/6 5/8 x 5/ L22 L296 L258 L26 L234 L236 L278 LPB L L8 L36 L4 L38 L /6 25/8 2/6 23/4 23/6 27/8 L BUSHINGS /8 3/6 /4 3/8 7/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 3/4 x 3/8 3/4 x 3/8 PB* /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 3/8 x 3/ SKL58 SKL6 SKL34 SKL36 SKL78 5/8 /6 3/4 3/6 7/8 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 x /4 x / SKL56 5/6 x /4.8 SLPB SL2 SL58 SL34 SL78 SL5/6 SL SL8 SL36 SL4 SL56 SL38 SL76 SL BUSHINGS 5/8 3/4 7/8 5/6 /8 3/6 /4 5/6 3/8 7/6 * Approximate weight in lbs. PB bushings are unsplit. PB* /8 x /6 3/6 x 3/32 3/6 x 3/32 3/6 x 3/32 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 5/6 x 5/32 3/8 x 3/ LPB L78 L5/6 L L8 L36 L4 L56 L38 L76 L2 L96 L58 L6 L34 L36 L78 L56 L2 L28 L236 L24 L256 L238 L276 7/8 7/8 5/6 /8 3/6 /4 5/6 3/8 7/6 9/6 5/8 /6 3/4 3/6 7/8 5/6 2 2/8 23/6 2/4 25/6 23/8 27/6 PB* 3/6 x 3/32 /4 x /8 /4 x /8 /4 x /8 /4 x /8 /4 x /8 5/6 x 5/32 5/6 x 5/32 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 x /4 x /4 x /4 x /4 x /4 x /4 x /4 5/8 x 5/6 5/8 x 5/6 5/8 x 5/ L2 L96 L58 L6 L34 L78 L56 L2 L28 L236 L24 L256 L238 L276 L22 L296 L258 L26 L234 L236 L278 L256 L3 L38 9/6 5/8 /6 3/4 7/8 5/6 2 2/8 23/6 2/4 25/6 23/8 27/6 2 29/6 25/8 2/6 23/4 23/6 27/8 25/6 3 3/8 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 3/8 x 3/6 x /4 x /4 x /4 x /4 x /4 x /4 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 5/8 x 5/6 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/8 3/4 x 3/ P686TBW 4/7... TB Wood s A9

12 SA SureGrip Short Bushings Dimensions SureGrip bushings are designed to transmit the rated torque capacity listed in the table below when the cap screws are tightened as indicated. The bushings are stocked in all popular bore sizes, including metric bores, within bore range for a particular bushing. L D B A 3/4" T T. ON BUSHINGS JS BUSHINGS S TO SS INCLUSIV Bush. Torque Capacity (In.Lbs.) ax. Bore SURGRIP SHORT BUSHING TORQU RATINGS AND DINSIONS DINSIONS IN INCHS A B D L Bolt Circle Cap Screws Required JS 35, /4 23/8 33/8 6/4 35/8 x 2 S 85, 5 3/ /8 35/8 43/6 77/8 43/4 x 3 NS, /8 x 3 PS 7, / x 4 WS 25, 8 3/ /4 23/4 4 /8 x 5 SS 4, /4 63/4 83/4 5 5 /4 x 5 Setscrew not standard Available as alteration. See page A for Bore and Keyseat information and weights. A TB Wood s P686TBW 4/7

13 SA SureGrip Short Bushings DINSIONS (In Inches) Bore and Key Seat Dimensions Product JS276 JS256 JS376 JS356 JS476 S376 S356 S476 S456 S576 NS356 NS476 NS456 NS576 NS556 Bore Key Seat Wt. (*) JS BUSHINGS 2 7/6 25/6 3 7/6 35/6 4 7/6 5/8 X 5/6 3/4 X 3/8 7/8 X 7/6 X /4 X /8 S BUSHINGS 3 7/6 35/6 4 7/6 45/6 5 7/6 7/8 X 7/6 X X /4 X /4 /4 X /4 NS BUSHINGS 35/6 4 7/6 45/6 5 7/6 55/6 X X /4 X 5/8 /4 X /4 X / NS6 6 X / * Approximate weight in lbs. Product PS456 PS576 PS556 PS6 PS676 PS62 PS656 PS7 WS576 WS556 WS676 WS62 WS656 WS7 WS72 WS756 WS8 WS876 WS82 Bore Key Seat Wt. (*) PS BUSHINGS 45/6 5 7/6 55/ /6 6 65/6 7 /4 X 5/8 /4 X 5/8 X 3/4 X 3/4 X X 3/4 X /8 3/4 X /8 WS BUSHINGS 5 7/6 55/6 6 7/6 6 65/ / /6 8 /4 X 5/8 X 3/4 X 3/4 X 3/4 3/4 X 3/4 3/4 X 3/4 3/4 X 3/4 2 X 3/4 2 X 3/4 2 X /4 2 X / P686TBW 4/7... TB Wood s A

14 Double Adjustment Tensioner Belt Drive Or Chain Tensioner C B A H J G BOLT D G BOLT TAP P N Product Number DINSIONS IN INCHS A B C D G H J N P DA / DAL Weight Lbs. The Double Adjustment tensioner (Type DA) permits a full 36 degree rotation of the idler. A second adjustment is obtained by the long slot in the base. The arm is locked in place with an ingenious use of a tapered fit. Tensioning of a drive should follow the installation guideline for the type of drive in question. A2 TB Wood s P686TBW 4/7

15 SureGrip Idler Bushings OR US WITH SHAVS, PULLYS, SPROCKTS, GARS OR OTHR PRODUCTS DSIGND OR QDTYP BUSHINGS Wood s SureGrip Idler Bushings are designed to accommodate stock Vbelt sheaves, flatbelt or Timingbelt pulleys, roller or silent chain sprockets, gears or other products that use QD*type bushings. They are equipped with two, permanently lubricated, ballbearing units for long, smooth, troublefree performance. Installation is made simply by slipping the threaded shaft through a hole bored in the support structure and tightening the locking nut. Sheaves, pulleys or other products can be removed without dis mantling the idler bushing. These idler units are available with SH, SD, SK, S or SureGrip bushings. Wood s SureGrip bushings are of the most widely used, tapered, interchangeable type. * U.S.T.. Reg. 43,47 Can. T.. Reg. 3,7 O.L. J A L K X Product DINSIONS IN INCHS A B D H J K L N O.L. X Wt. (Lbs.) H SHBB NC SDBB NC SDBB /8NC D B SKBB /4NC N SBB /4NC SBB NC BB /86NC TAPR 3/4 PR T. ON DIA. quivalent Load Rating (lbs.) Hours Life Product Basic Rating RP SHBB SKBB SBB BB SHBB SDBB SKBB SBB BB Note: The basic rating is the maximum dynamic radial load which will allow a 9% survival rate when running at 33/3 RP for 5 hours. 6 SHBB SDBB SKBB SBB BB quivalent Rating = Basic Rating Hours = Basic Rating3 x,, 3 Hours x 6 x RP/,, Load (Lbs) 3 x 6 x RP P686TBW 4/7... TB Wood s A3

16 SureGrip Bushings Installation Instructions The SureGrip tapered, QDtype interchangeable bushing offers flexible and easy installation while providing exceptional holding power. To ensure that the bushing performs as specified, it must be installed properly. Before beginning, make sure the correct size and quantity of parts are available for the installation. The bushing has been manufactured to accept a setscrew over the key and its use is optional. It is packaged with the hardware on sizes SH to and loosely installed in the bushing on sizes N to S. To Install: IPORTANT: DO NOT US LUBRICANTS IN THIS INSTALLATION!. Inspect the tapered bore of the sheave and the tapered surface of the bushing. Any paint, dirt, oil, or grease UST be removed. 2. Select the type of mounting (See ig. or 2) that best suits your application. ig. ig. 2 To Remove:. Relieve drive tension by shortening the center distance between driver and driven sheaves. 2. Lift off belts. 3. Loosen and remove cap screws. If the bushings have keyway setscrews, loosen them. 4. As shown below, insert cap screws (three in JA through J bushings, two in QT and thru W bushings and four in S bushing) in tapped removal holes and progressively tighten each one until mating part is loose on bushing. (xception: If mating part is installed with cap screw heads next to motor, with insufficient room to insert screws in tapped holes, loosen cap screws and use wedge between bushing flange and mating part.) 5. Remove mating part from bushing and, if necessary, bushing from shaft. 3. STANDARD OUNTING: Install shaft key. (Note: If key was furnished with bushing, you must use that key.) Install bushing on clean shaft, flange end first. If bushing will not freely slide on the shaft, insert a screwdriver or similar object into the flange sawcut to act as a wedge to open the bushing s bore. Caution: xcessive wedging will split the bushing. If using the setscrew, tighten it just enough to prevent the bushing from sliding on the shaft. Caution: Do not overtighten setscrew! Slide sheave into position on bushing aligning the drilled holes in the sheave with the tapped holes in the bushing flange. (Note: Install thru S bushings so that the two tapped holes in the sheave are located as far away as possible from the bushing s sawcut.) Loosely thread the cap screws with lockwashers into the assembly. DO NOT US LUBRICANT ON TH CAP SCRWS! 4. RVRS OUNTING: With large end of the taper out, slide sheave onto shaft as far as possible. Install shaft key. (See shaft key note in #3 above.) Install bushing onto shaft so tapered end will mate with sheave. (See wedging note in #3 above.) If using the setscrew, tighten it enough to prevent the bushing from sliding on the shaft. Caution: Do not over tighten setscrew! Pull the sheave up on the bushing, aligning the drilled holes in the bushing flange with the tapped holes in the sheave. Loosely thread the cap screws with lockwashers into the assembly. DO NOT US LUBRICANT ON TH CAP SCRWS! 5. Using a torque wrench, tighten all cap screws evenly and progressively in rotation to the torque value in Table. There must be a gap between the bushing flange and sheave hub when installation is complete. DO NOT OVRTORQU! DO NOT ATTPT TO CLOS GAP BTWN BUSHING LANG AND SHAV HUB! SURGRIP BUSHINGS SCRW TIGHTNING INORATION Tapered Bushing QT JA SH SDS SD SK S J JS S N NS P PS W WS S SS Size & Thread of Cap Screw /4 x 2 24 /4 2 5/6 8 3/ /6 2 5/8 5/8 3/4 3/4 7/8 9 7/ /8 7 /8 7 /4 7 /4 7 t.lbs. To Apply With Torque Wrench CAUTION: The tightening force on the screws is multiplied many times by the wedging action of the tapered surface. If extreme tightening force is applied, or if a lubricant is used, bursting pressures will be created in the hub of the mating part A4 TB Wood s P686TBW 4/7

17 Wood s etric SureGrip QD Bushings (with metric hardware) A2 Provide a True Clamp it Are asy to Install and Remove Permit ourway ounting P686TBW /5... TB Wood s A2

18 etric SureGrip Bushings eatures SureGrip Quick Detachable bushings are easy to install and remove. They are split through flange and taper to provide a true clamp on the shaft that is the equivalent of a shrink fit. All sizes except JA and QT have a setscrew over the key to help 6hole drilling (most sizes) makes installation and removal quick and easy. Keyseat 8 from split. Precise taper (3/4 in. per ft. on diameter) provides proper wedging action. Saw cut through flange and taper (and sometimes cut down into keyway also) to provide a true clamp fit. Cap screws used to secure bushings to sheave and to remove bushing from sheave. maintain the bushing s position on the shaft until the cap screws are securely tightened. SureGrip bushings have a very gradual taper (3/4inch taper per ft. on the diameter) which is about half the inclined angle of many other bushings. The result is the SureGrip securely clamps the shaft, with twice the force of those competitive bushings, to provide extreme holding power. Versatile SureGrip bushings permit the mounting of the same mating part on shafts of different diameters, and the mounting of different sheaves on the same shaft using the same bushing. Their interchangeability extends through sheaves, pulleys, timing pulleys, sprockets, flexible and rigid couplings, madetoorder items by Wood s, and to product lines of several other mechanical power transmission manufacturers. SureGrip bushings are manufactured with the drilled and tapped holes located at a precise distance from the keyseat; thus, a wide mating part having a bushing in each end can be mounted on a common shaft with the two keyways in line. This feature not only facilitates installation but also permits both bushings to carry an equal share of the load. STANDARD OUNTING RVRS OUNTING. Cap screws from outside through drilled holes in the mating part and into threaded holes in the bushing flange located on the inside of the assembly. Or the complete as sembly reversed on the shaft and; 2. Cap screws from inside through drilled holes in the mating part and into threaded holes in the bushing flange located on the outside of the assembly. 3. Cap screws from inside through drilled holes in the bushing flange located on the inside of the as sembly and into threaded holes in the mating part. 4. Cap screws from outside through drilled holes in the bushing flangelocated on the outside of the as sembly and into threaded holes in the mating part. A22 TB Wood s P686TBW /5

19 etric SureGrip Bushings Dimensions SureGrip bushings are designed to transmit the rated torque capacity listed in the table below when the cap screws are tightened as indicated. The bushings are stocked in all popular bore sizes, including metric bores, within the bore range for a particular bushing. NOT: ating hub must have metric drilling. L D B Bushing QT Bushings JA to inclusive w/ Setscrew xcept JA A 3/4" taper per ft. on diameter SURGRIP BUSHING TORQU RATINGS AND DINSIONS etric Bushing Torque Capacity (N) ax. Bore (Note ) DINSIONS IN ILLITRS A B D * L Cap Screw Bolt Circle Screws Required QT JA SH SDS SD SK S * ating hub length.. AX BOR WITH STANDARD KYSAT. See pages A2 4 for Bore and Keyseat information and weights. P686TBW /5... TB Wood s A23

20 etric SureGrip Bushings Bore And Keyseat Dimensions Product Bore (mm) Key Wt. Product Bore (mm) Key Wt. Product Bore (mm) Key Wt. QT BUSHINGS SDS BUSHINGS S BUSHINGS QTPB QT QT QT4 QT5 QT6 QT9 QT2 QT24 QT25 QT28 QT3 QT32 QT38 JAPB JA JA JA4 JA5 JA9 JA2 JA24 JA25 JA28 SHPB SH SH SH4 SH5 SH9 SH2 SH24 SH25 SH28 SH3 SH32 SH35 SH38 SH NON 4 x 4 4 x 4 5 x 5 5 x 5 5 x 5 6 x 6 6 x 6 8 x 7 8 x 7 8 x 7 8 x 7 x 6 x 6 JA BUSHINGS NON 4 x 4 4 x 4 5 x 5 5 x 5 6 x 6 6 x 6 8 x 6 8 x 6 8 x 5 SH BUSHINGS SHALLOW KY URNISHD NON 4 x 4 4 x 4 5 x 5 5 x 5 6 x 6 6 x 6 8 x 7 8 x 7 8 x 7 8 x 7 x 8 x 8 x 7 2 x SDSPB SDS5 SDS9 SDS2 SDS24 SDS25 SDS28 SDS3 SDS32 SDS35 SDS38 SDS4 SDS42 SDS48 SDPB SD5 SD9 SD2 SD24 SD25 SD28 SD3 SD35 SD38 SD4 SD42 SD48 SKPB SK9 SK2 SK24 SK28 SK3 SK32 SK35 SK38 SK4 SK42 SK48 SK5 SK55 SK NON 5 x 5 6 x 6 6 x 6 8 x 7 8 x 7 8 x 7 8 x 7 x 8 x 8 x 8 2 x 8 2 x 8 4 x 7 SD BUSHINGS NON 5 x 5 6 x 6 6 x 6 8 x 7 8 x 7 8 x 7 8 x 7 x 8 x 8 2 x 8 2 x 8 4 x 7 SK BUSHINGS NON 6 x 6 6 x 6 8 x 7 8 x 7 8 x 7 x 8 x 8 x 8 2 x 8 2 x 8 4 x 9 4 x 9 6 x 8 x SPB S2 S24 S28 S3 S35 S38 S4 S42 S48 S5 S55 S6 PB PB NON 6 x 6 8 x 7 8 x 7 8 x 7 x 8 x 8 2 x 8 2 x 8 4 x 9 4 x 9 6 x 8 x BUSHINGS NON 8 x 7 8 x 7 x 8 2 x 8 2 x 8 4 x 9 4 x 9 6 x 8 x 2 x 2 BUSHINGS NON 8 x 7 x 8 2 x 8 2 x 8 4 x 9 4 x 9 6 x 8 x 2 x A24 TB Wood s P686TBW /5

21 etric SureGrip L Series langeless Bushings Dimensions etric Bushing Torque Capacity (N) aterial Type ax. Bore (Note ) DINSIONS IN ILLITRS Cap screw Bolt Circle Screws Required SKL 79 D.I SL 243 D.I L 226 D.I L 584 D.I AX BOR WITH KYSAT. B B Patent 534 BUSHING SKL BUSHINGS SL TO L TAPR.75 IN 2 ON DIA. Product Number Bore Key Weight Lbs. SKLPB 5 None.7 SLPB 5 None 2. LPB 2 None 4. LPB 2 None 8.7 To Install: IPORTANT: DO NOT US LUBRICANTS IN THIS INSTALLATION. Inspect shafts, bushing, and mating hub. Remove all nicks, paint, dirt, grease, etc. from mating surfaces. 2. Place key in shaft s keyseat. 3. Slide bushing onto shaft and key. Small nd of Taper ust Be Outboard. 4. Slide tapered mating hub over bushing. Align () the shaft key with one of the slots in the mating hub and (2) the drilled holes in mating hub with the threaded holes in the bushing. 5. Put lockwashers on cap screws and insert one cap screw thru each drilled hole in the mating hub and into the threaded hole in the bushing. 6. Use a Torque Wrench. Tighten all cap screws evenly and progressively in rotation. Torque around all the cap screws as often as necessary until the listed torque value remains on each cap screw. To Remove:. Loosen and remove all cap screws from assembly. 2. Install one cap screw in each threaded hole in the mating hub. 3. venly torque each cap screw in rotation to force the mating hub off the bushing. etric Bushing Screws Required Newtoneters (t.lbs.) To Apply With Torque Wrench SKL (5) SL (5) L (3) L 4 75 (55) CAUTION The use of lubricants or excessive wrench torques may cause hub stresses high enough to break the mating hub! P686TBW /5... TB Wood s A25

22 etric SureGrip Bushings Installation Instructions The SureGrip tapered, QDtype interchangeable bushing offers flexible and easy installation while providing exceptional holding power. To ensure that the bushing performs as specified, it must be installed properly. Before beginning, make sure the correct size and quantity of parts are available for the installation. The bushing has been manufactured to accept a setscrew over the key and its use is optional. It is packaged with the hardware on sizes QT to J. To Install: IPORTANT: DO NOT US LUBRICANTS IN THIS INSTALLATION!. Inspect the tapered bore of the sheave and the tapered surface of the bushing. Any paint, dirt, oil, or grease UST be removed. 2. Select the type of mounting (See ig. or 2) that best suits your application. To Remove:. Relieve drive tension by shortening the center distance between driver and driven sheaves. 2. Lift off belts. 3. Loosen and remove cap screws. If the bushings have keyway setscrews, loosen them. 4. As shown below, insert cap screws (three in JA through J bushings, two in QT bushings) in tapped removal holes and progressively tighten each one until mating part is loose on bushing. (xception: If mating part is installed with cap screw heads next to motor, with insufficient room to insert screws in tapped holes, loosen cap screws and use wedge between bushing flange and mating part.) 5. Remove mating part from bushing and, if necessary, bushing from shaft. ig. ig STANDARD OUNTING: Install shaft key. (Note: If key was furnished with bushing, you must use that key.) Install bushing on clean shaft, flange end first. If bushing will not freely slide on the shaft, insert a screwdriver or similar object into the flange sawcut to act as a wedge to open the bushing s bore. Caution: xcessive wedging will split the bushing. If using the setscrew, tighten it just enough to prevent the bushing from sliding on the shaft. Caution: Do not overtighten setscrew! Slide sheave into position on bushing aligning the drilled holes in the sheave with the tapped holes in the bushing flange. Loosely thread the cap screws with lockwashers into the assembly. DO NOT US LUBRICANT ON TH CAP SCRWS! 4. RVRS OUNTING: With large end of the taper out, slide sheave onto shaft as far as possible. Install shaft key. (See shaft key note in #3 above.) Install bushing onto shaft so tapered end will mate with sheave. (See wedging note in #3 above.) If using the setscrew, tighten it enough to prevent the bushing from sliding on the shaft. Caution: Do not over tighten setscrew! Pull the sheave up on the bushing, aligning the drilled holes in the bushing flange with the tapped holes in the sheave. Loosely thread the cap screws with lockwashers into the assembly. DO NOT US LUBRICANT ON TH CAP SCRWS! 5. Using a torque wrench, tighten all cap screws evenly and progressively in rotation to the torque value in Table. There must be a gap between the bushing flange and sheave hub when installation is complete. DO NOT OVRTORQU! DO NOT ATTPT TO CLOS GAP BTWN BUSHING LANG AND SHAV HUB! SCRW TIGHTNING INORATION Tapered Bushing QT JA SH SDS SD SK S J Size & Thread of Cap Screw 6 x. 5 x.8 6 x. 8 x.25 x.5 2 x.75 6 x 2. 6 x 2. Newtoneters (t.lbs.) To Apply With Torque Wrench 2 (9) 7 (5) 2 (9) 2 (5) 4 (3) 8 (6) 49 () 83 (35) CAUTION: The tightening force on the screws is multiplied many times by the wedging action of the tapered surface. If extreme tightening force is applied, or if a lubricant is used, bursting pressures will be created in the hub of the mating part. A26 TB Wood s P686TBW /5

23 Synchronous Sprockets & Belts C Positive SlipProof ngagement High echanical fficiency No Lubrication Needed P686TBW /5... TB Wood s C

24 Synchronous Belt Drives eatures Positive SlipProof ngagement Because the teeth of the Synchronous Belt mesh with sprocket grooves, there is no creepage to cause speed variations. Powerful tensile cords can t stretch, so takeup is eliminated from drive maintenance. Precision is guaranteed. This feature is especially important in printing, packaging and materialhandling where synchronization is a necessity. Because of this, Synchronous Drives have replaced gears and silent chain in these and many similar applications. Wide Speed Range Drives, such as chains perform best within a limited range of speeds. With Synchronous Drives, the speed range is more than doubled. This feature is of special importance when the entire speed range is developed from a single drive such as in DC drives or machine tool applications. Synchronous Belt efficiency remains high throughout the entire speed range. Constant Driven Speeds The unique Synchronous tooth configuration engages and clears each sprocket groove in a continuous flow of quiet, smoothly transmitted power. Thus, angular velocity of the driven sprocket is constant. There is no jerking or vibration caused by chordal rise and fall of the pitch line as occurs in chain drives. There is no loss of speed caused by belt creep or slippage as with flat and Vbelts. The Synchronous Drive s constant output speed is a definite advantage in precision work such as in highspeed printers and machine tools like indexers, drill presses and boring mills. Wide Range of Load Capacities Load capacities of stock Synchronous Drives range from fractional to hundreds of horsepower. Torque loads range from thousands of footpounds to inchounces. The high efficiencies offered by Synchro nous Drives make them ideal for many purposes. No Lubrication Unlike chain or gear drives, Synchronous Drives never need lubrication, since there is no metaltometal contact. aintenance costs are cut to a minimum. Contamination from oil drip, spatter, splash or spray mist is eliminated, too. In addition, there is no oil or grease to trap dirt, grit or abrasive particles and accelerate wear. ood processors, grain elevator operators and other contaminationsensitive industries benefit especially from this feature. High Tension liminated Unlike flat and Vbelts, Synchronous Belts do not rely on friction for their pulling power. Slackside tension is practically zero, and tightside tension is reduced. As a result, overhung bearing loads are lessened with resultant improvements in motor and bearing life. High echanical fficiency Synchronous Drives have unusually high mechanical efficiency. urthermore, transmission efficiency is not lost with use. The belt construction insures very little heat buildup since friction is not required to pull the load. In addition, belt tension is reduced. Significant power savings are thus obtainable, particularly when using Synchronous Belts on larger horsepower installations. conomical Operation The overall cost of Synchronous Drives can be lower than those of other drives. Original equipment costs are reduced by eliminating adjustable motor bases, lubricating systems and tensioning devices. aintenance is simpler. No adjustments are needed due to stretch or wear. These savings are not confined to newly designed drives alone, because most roller chain drives can be con verted to Wood s Synchronous Drives. Synchronous Belts are also ideal for areas where proper maintenance is difficult or where downtime could prove to be extremely expensive. C2 TB Wood s P686TBW /5

25 Synchronous QD Sprocket 5 Sprocket Types The synchronous sprockets listed in the tables below are all stock sizes. All dimensions given are for the sprocket with the SureGrip bushing in place and are in inches only. Type A Type B Type C Type D Type Type PB O. D. I. D. L O. D. I. D. L O. D. I. D. O. D. I. D. O. D. I. D. L L L L O. D. I. D. K K K K K Dimensions Type A Type B Type C Type D Type The figure following the sketch reference letter in the Type column indicates the construction of the sprocket. ( = Solid, 2 = Web, and 3 = Arms), and the letter indicates that the sprocket has flanges. Type PB* BoredToSuit PRODUCT N. BUSH ING NO. O TTH P.D. DIATRS Sprocket O.D. lange OR BLTS 5mm (.59 in.) WID 5mm PITCH (55) ace Width () =.89 P3255* P3455* P3655* P3855 P455 P4455 P4855 P5255 P5655 P655 P6455 P6855 P7255 P855 P955 JA JA JA JA JA SH SH SH SDS SDS SDS SDS DINSIONS (INCHS) BOR TYP I.D. K L in. ax PB PB PB P255 SDS D OR BLTS 25mm (.98in.) WID PITCH (525) ace Width () =.28 P32525* P34525* P36525* P38525 P4525 P44525 P48525 P52525 P56525 P6525 P64525 P68525 P72525 P8525 P9525 JA JA JA JA JA SH SH SH SDS SDS SDS SDS D D D D D D D D D PB PB PB P2525 SDS D D D D D D D D *.5 *.5 * *.5 *.5 * WT. (INCL. BUSH.) Weights for all SureGrip bushed items are approximate and include the bushing. * BoredToSuit construction, minimum plain bore with 2 setscrews. P686TBW /5... TB Wood s C3

26 Synchronous QD Sprocket 8 Dimensions SPROCKT TYPS The synchronous sprockets listed in the tables below are all stock sizes. All dimensions given are for the sprocket with the SureGrip bushing in place and are in inches only. Type A Type B Type C Type D Type Type PB Type L O. D. I. D. L O. D. I. D. L O. D. I. D. O. D. I. D. O. D. I. D. L L L L O. D. I. D. K O. D. I. D. L K K K K Type A Type B Type C Type D Type Type PB* BoredToSuit The figure following the sketch reference letter in the Type column indicates the construction of the sprocket. ( = Solid, 2 = Web, and 3 = Arms), and the letter indicates that the sprocket has flanges. Type L PRODUCT NO. BUSH ING NO. O TTH P.D. DIATRS Sprocket O.D. lange TYP I.D. K L in. ax. DUAL DRILLD (INCH/TRIC) DINSIONS (INCHS) OR BLTS 2mm (.79 in.) WID 8mm PITCH (82) ace Width () = /8 Dual Drilled (inch /metric) P2282* P2482 P2682 P2882 P382 P3282 P3482 P3682 P3882 P482 P4482 P4882 P5682 P6482 P7282 P882 P982 JA JA QT QT QT SH SH SH SH SDS SDS SDS SDS SDS SDS SDS PB D D D D D D D D D D2 D2 D3 5/8 9/32 9/32 /4 /4 /8 /4 /4 /4 /4 /4 /4 /4 /4 /4 /4 /4 5/8 /4 5/6 5/6 5/6 5/6 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/4 /4 /4 /4 /4 /4 /4 /4 5/6 5/6 5/6 5/6 5/6 5/6 5/6 9/32 9/32 3/8 3/8 /8 /8 /8 /8 /6 /6 /6 /6 /6 /6 /6 * BOR 3/6 /4 /4 /6 /6 /6 / WT Weights for all SureGrip bushed items are approximate and include the bushing. * BoredToSuit construction, minimum plain bore with 2 setscrews. Drilled for both inch and metric bushing hardware. C4 TB Wood s P686TBW /5

27 Synchronous QD Sprocket 8 Dimensions PRODUCT NO. BUSH ING NO. O TTH P.D. DIATRS Sprocket O.D. lange TYP I.D. K L in. ax. DUAL DRILLD (INCH/TRIC) DUAL DRILLD (INCH/TRIC) DUAL DRILLD (INCH/TRIC) DINSIONS (INCHS) OR BLTS 3mm (.8 in.) WID 8mm PITCH (83) ace Width () = Dual Drilled (inch/metric) P2283* P2483 P2683 P2883 P383 P3283 P3483 P3683 P3883 P483 P4483 P4883 P5683 P6483 P7283 P883 P983 P283 JA JA QT QT QT SH SH SH SH SDS SDS SDS SK SK SK SK SK PB B D D2 D2 D2 D3 5/8 3/32 3/32 5/8 5/8 /4 /8 /8 /8 /8 /8 /8 /8 5/32 5/32 5/32 5/32 5/32 5/8 5/8 /6 /6 /6 /6 3/4 3/4 3/4 /4 /4 /4 /4 /4 2/8 /4 /4 /4 /4 /4 /4 /4 5/6 5/6 5/6 7/8 7/8 7/8 7/8 7/8 OR BLTS 5mm (.97 in.) WID 8mm PITCH (85) ace Width () = 23/8 Dual Drilled (inch/metric) P2885* P385* P3285* P3485 P3685 P3885 P485 P4485 P4885 P5685 P6485 P7285 P885 P985 P285 P4485 P9285 SH SH SH SH SD SD SK SK SK S S S PB PB PB D D D D D D D D D D2 D2 D3 D3 D3 3/4 3/4 3/4 /6 /6 /6 /6 /6 /6 5/32 5/32 5/32 /8 /8 /8 7/32 7/32 29/32 25/32 2/6 9/6 9/6 9/6 9/6 9/6 9/6 9/6 9/6 3/8 3/8 3/8 3/8 3/8 /4 /4 /4 /4 3/6 3/6 7/8 7/8 7/ /8 25/8 OR BLTS 85mm (3.35 in.) WID 8mm PITCH (885) ace Width () = 33/4 Dual Drilled (inch/metric) P34885* P36885 P38885 P4885 P44885 P48885 P56885 P64885 P72885 P8885 P9885 P2885 P44885 P92885 SKL SKL SKL SL SL L S PB L L L L L L A D D3 D3 3/4 25/32 25/32 25/32 25/32 25/32 3/8 9/6 5/32 5/32 7/32 7/6 7/6 7/6 25/6 /4 /6 /6 /6 5/8 5/8 5/8 4 /8 /8 /8 /8 /8 2 25/8 25/8 25/8 35/8 35/8 35/8 5/32 5/32 3/8 3/8 /8 /8 /8 /8 /6 /6 /6 3/32 3/32 3/32 3/32 3/32 3/6 3/6 3/6 3/6 5/8 5/8 2/32 2/32 2/32 9/32 9/32 3/32 3/32 3/32 3/32 3/32 23/8 3/6 3/32 3/32 3/32 9/6 9/6 9/6 * * 3/4 * 3/4 * 3/4 7/8 7/8 * 7/8 7/8 7/8 7/8 7/8 BOR 3/6 /4 /4 /6 /6 /6 / /8 25/8 25/8 25/8 25/8 3/8 3/8 /6 /6 /6 / /8 25/8 25/8 25/6 25/6 25/ /4 5/6 5/6 5/6 23/8 23/8 27/8 25/ WT Weights for all SureGrip bushed items are approximate and include the bushing. * BoredToSuit construction, minimum plain bore with 2 setscrews. Drilled for both inch and metric bushing hardware. P686TBW /5... TB Wood s C5

28 Synchronous QD Sprocket 4 Dimensions Type A Type B Type C Type D Type Type PB Type L O. D. I. D. L O. D. I. D. L O. D. I. D. O. D. I. D. O. D. I. D. L L L L O. D. I. D. K O. D. I. D. L K K K K Type A Type B Type C Type D Type Type PB* BoredToSuit The figure following the sketch reference letter in the Type column indicates the construction of the sprocket. ( = Solid, 2 = Web, and 3 = Arms), and the letter indicates that the sprocket has flanges. Type L PRODUCT NO. BUSH ING NO. O TTH P.D. DIATRS Sprocket O.D. lange TYP I.D. K L in. ax. DUAL DRILLD (INCH/TRIC) DUAL DRILLD (INCH/TRIC) DINSIONS (INCHS) OR BLTS 4mm (.57 in.) WID 4mm PITCH (44) ace Width () = 2/8 Dual Drilled (inch/metric) P2844 P2944 P344 P3244 P3444 P3644 P3844 P444 P4444 P4844 P5244 P5644 P644 P6444 P6844 P7244 P844 P944 P244 P4444 P6844 P9244 P2644 SK SK SK SK SK S S S D D D D D D D D D D D D2 D2 D2 D2 D3 D3 D3 D3 D3 D3 3/32 3/32 9/32 9/32 9/32 /4 /4 /4 2/32 2/32 2/32 2/32 2/32 2/32 2/32 2/32 2/32 2/32 2/32 2/32 5/6 5/6 5/6 7/6 7/6 7/6 7/6 7/6 7/6 /4 /4 /4 /4 /4 /4 /4 /4 /4 /4 /4 /4 7/8 7/8 7/8 7/8 7/ /8 25/8 25/8 25/8 25/8 25/8 25/8 25/8 25/8 25/8 25/8 25/8 35/8 35/8 35/8 23/32 23/32 7/32 7/32 7/32 OR BLTS 55mm (2.7 in.) WID 4mm PITCH (455) ace Width () = 23/4 Dual Drilled (inch/metric) P28455 P29455 P3455 P32455 P34455 P36455 P38455 P4455 P44455 P48455 P52455 P56455 P6455 P64455 P68455 P72455 P8455 P9455 P2455 P44455 P68455 P92455 P26455 SK SK SK SK SK S S S D D D D D D D2 D2 D2 D3 D3 D3 D3 D3 D3 9/32 9/32 /32 /32 /32 /6 /6 /6 /32 /32 /32 /32 /32 5/6 5/6 5/6 5/6 5/6 5/6 5/6 5/6 5/6 5/6 3/4 3/4 3/4 3/4 3/4 3/4 9/6 9/6 9/6 9/6 9/6 /8 /8 /8 /8 /8 /8 /8 /8 /8 /8 7/8 7/8 7/8 7/8 7/ /8 25/8 25/8 25/8 25/8 35/8 35/8 35/8 35/8 35/8 35/8 35/8 35/8 35/8 35/8 3/8 3/8 3/8 5/32 5/32 5/32 5/32 5/32 5/32 5/32 5/32 5/32 5/32 5/32 5/32 /6 /6 /6 23/32 23/32 27/32 27/32 27/32 /6 /6 /6 5/32 5/32 5/32 5/32 5/32 /6 /6 /6 /6 /6 /6 /6 /6 /6 /6 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 7/8 BOR 25/8 25/8 25/8 25/8 25/8 25/6 25/6 25/ /8 25/8 25/8 25/8 25/8 25/6 25/6 25/ WT Weights for all SureGrip bushed items are approximate and include the bushing. Drilled for both inch and metric bushing hardware. C6 TB Wood s P686TBW /5

29 C7 P686TBW /5... TB Wood s Synchronous QD Sprocket 4 Dimensions PRODUCT NO. BUSH ING NO. O TTH DIATRS TYP DINSION (INCHS) BOR WT. P.D. O.D. I.D. K L in. ax. Sprocket lange OR BLTS 85mm (3.35 in.) WID 4mm PITCH (485) ace Width () = 4 P28485 P29485 P3485 P32485 P34485 SL SL L L L L L L L L 2/32 2/32 5/8 5/8 5/8 /8 /8 3/32 3/32 23/8 23/8 23/8 7/8 7/8 7/8 23/8 23/8 27/8 27/8 27/ P36485 P38485 P4485 P44485 P48485 S S S /6 /6 /6 9/32 9/32 3/8 3/8 3/8 3/6 3/ /8 25/8 5/6 5/6 5/6 3/32 3/32 7/8 7/8 25/6 25/6 25/ P52485 P56485 P6485 P64485 P D D D D2 9/32 5/6 5/6 5/6 5/6 3/6 3/4 3/4 3/4 3/4 25/8 35/8 35/8 35/8 35/8 3/32 /6 /6 /6 /6 7/8 7/ P72485 P8485 P9485 P2485 P D2 D2 D3 D3 D3 5/6 5/6 5/6 5/6 5/6 3/4 3/4 3/4 3/4 3/4 35/8 35/8 35/8 35/8 35/8 /6 /6 /6 /6 / P68485 P92485 P26485 J J J D3 D3 D3 27/32 27/32 27/32 3/32 3/32 3/ /32 /32 /32 7/6 7/6 7/ OR BLTS 5mm (4.53 in.) WID 4mm PITCH (45) ace Width () = 5/4 P2845 P2945 P345 P3245 P3445 SL SL L L L L L L L L 39/32 39/32 27/8 27/8 27/8 /8 /8 3/32 3/32 23/8 23/8 23/8 7/8 7/8 7/8 23/8 23/8 27/8 27/8 27/ P3645 P3845 P445 P4445 P4845 L L L L L L 3/4 3/4 3/4 29/32 29/32 3/6 3/6 23/8 23/8 23/8 25/8 25/ /32 23/32 7/8 7/8 3/8 3/8 3/ P5245 P5645 P645 P6445 P6845 JJ D D 5/6 5/6 5/6 /4 /4 3/8 3/8 3/8 35/8 35/8 35/ /6 5/6 5/6 7/6 7/ P7245 P845 P945 P245 P4445 J J J J J D D2 D2 D3 D3 /4 /4 /4 /4 / /6 7/6 7/6 7/6 7/ P6845 P9245 P C3 C3 C3 3/32 3/32 3/32 /6 /6 /6 63/4 63/4 63/4 3/32 3/32 3/32 5/6 5/6 5/ OR BLTS 7mm (6.69 in.) WID 4mm PITCH (47) ace Width () = 73/8 P3647 P3847 P447 P4447 P4847 L L L L L L L L L L 37/8 37/8 37/8 37/8 37/8 23/8 23/8 23/8 23/8 23/ /8 3/8 3/8 3/8 3/ P5247 P5647 P647 P6447 P6847 JJ J /8 3/8 7/8 7/8 7/8 27/6 27/6 2/8 2/8 2/8 35/8 35/ /8 23/ /6 7/6 7/ P7247 P847 P947 P247 P4447 J J J A2 A2 D3 D3 7/8 7/8 7/8 /32 /32 2/8 2/8 2/8 7/6 7/ /4 63/ /32 2/32 7/6 7/6 7/6 5/6 5/ P6847 P9247 P D3 D3 D3 /32 /32 /32 7/6 7/6 7/6 63/4 63/4 63/4 2/32 2/32 2/32 5/6 5/6 5/ Weights for all SureGrip bushed items are approximate and include the bushing.

30 Synchronous QD Sprocket 2 Dimensions The synchronous sprockets listed in the tables below are all stock sizes. All dimensions given are for the sprocket with the SureGrip bushing in place and are in inches only. Type A Type B Type C Type D Type Type PB O. D. I. D. L O. D. I. D. L O. D. I. D. O. D. I. D. O. D. I. D. L L L L O. D. I. D. K K K K K Type A Type B Type C Type D Type The figure following the sketch reference letter in the Type column indicates the construction of the sprocket. ( = Solid, 2 = Web, and 3 = Arms), and the letter indicates that the sprocket has flanges. Type PB* BoredToSuit PRODUCT NO. BUSH ING NO. O TTH P.D. DIATRS Sprocket O.D. lange OR BLTS 5mm (4.53 in.) WID 2mm PITCH (25) ace Width () = 53/8 P3425 P3625 P3825 P425 P4425 P4825 P5225 P5625 P625 P6425 P6825 P7225 P825 P925 P225 P4425 P6825 P9225 P2625 J J J J J J J N N N N DINSIONS (INCHS) BOR TYP I.D. K L in. ax D D2 D2 D2 D2 D2 D2 C2 C2 C3 C3 C3 C3 C3 3/8 3/8 3/8 3/8 3/8 /6 /6 /6 /6 /6 /6 /6 9/32 9/32 9/32 /6 /6 /6 /6 OR BLTS 7mm (6.69 in.) WID 2mm PITCH (27) ace Width () = 7 P3427* P3627* P3827 P427 P4427 P4827 P5227 P5627 P627 P6427 P6827 P7227 P827 P927 P227 P4427 P6827 P9227 P2627 J J J N N P P P Weights for all SureGrip bushed items are approximate and include the bushing. *BoredToSuit construction, minimum plain bore with 2 setscrews. PB PB A2 A2 A2 A2 A2 C3 C3 C3 C3 C3 /4 /4 5/6 5/6 5/6 /32 /32 /32 /32 /32 /32 /32 /32 /32 7/6 7/6 3/6 3/6 3/6 7/6 7/6 7/6 7/6 7/6 3/6 3/6 3/6 3/6 3/6 3/6 3/6 3/6 3/6 3/ /6 23/6 23/6 /4 /4 /6 /6 /6 35/8 35/8 35/8 35/8 35/ /4 63/4 63/4 8/8 8/8 8/8 8/ /4 63/4 63/4 63/4 63/4 63/4 63/4 63/4 63/4 8/8 8/8 93/8 93/8 93/8 3/8 3/8 3/8 3/8 3/8 5/6 5/6 5/6 5/6 5/6 5/6 5/6 3/32 3/32 3/32 /6 /6 /6 /6 2/4 2/4 2/6 2/6 2/6 23/32 23/32 23/32 23/32 23/32 23/32 23/32 23/32 23/32 3/6 3/6 /6 /6 /6 7/6 7/6 7/6 7/6 7/6 7/6 7/6 5/6 5/6 5/6 27/6 27/6 27/6 27/6 2/8* 2/8* 7/6 7/6 7/6 5/6 5/6 5/6 5/6 5/6 5/6 5/6 5/6 5/6 27/6 27/6 25/6 25/6 25/ / WT C8 TB Wood s P686TBW /5

31 Synchronous QD Sprocket 2 Dimensions PRODUCT NO. BUSH ING NO. O TTH P.D. DIATRS Sprocket O.D. lange OR BLTS 23mm (9.6in.) WID 2mm PITCH (223) ace Width () = 97/8 P38223* P4223* P44223* P48223 P52223 P56223 P6223 P64223 P68223 P72223 P8223 P9223 P2223 P44223 P68223 P92223 P26223 N N N N N P P W W DINSIONS (INCHS) BOR TYP I.D. K L in. ax PB PB PB A2 A2 A2 A2 A3 D3 D3 C3 C3 /4 /4 /4 7/32 7/32 7/32 7/32 7/32 /8 /8 /8 /8 /8 9/6 9/6 3/4 3/4 OR BLTS 29mm (.42in.) WID 2mm PITCH (2m29) ace Width () =2/4 P52229 P56229 P6229 P64229 P68229 P72229 P8229 P9229 P2229 P44229 P68229 P92229 P26229 N N N N N N N N P P W W W A2 A2 A2 A2 A3 A3 A3 A3 3/6 3/6 3/6 3/6 3/6 3/6 3/6 3/6 5/8 5/8 7/6 7/6 7/6 OR BLTS 34mm (3.39in.) WID 2mm PITCH (2m34) ace Width () = 4/4 P52234 P56234 P6234 P64234 P68234 P72234 P8234 P9234 P2234 P44234 P68234 P92234 P26234 N N N N N N P P P W W S S A2 A2 A2 A2 A3 A3 D3 D3 3/6 3/6 3/6 3/6 3/6 3/6 5/8 5/8 5/8 3/8 3/ / /6 3/6 3/6 3/6 3/6 5/6 5/ /6 2/6 2/ /8 25/8 /8 / /4 63/4 63/4 63/4 63/4 8/8 8/8 8/8 8/8 8/8 93/8 93/8 3/8 3/8 8/8 8/8 8/8 8/8 8/8 8/8 8/8 8/8 93/8 93/8 3/8 3/8 3/8 8/8 8/8 8/8 8/8 8/8 8/8 93/8 93/8 93/8 3/8 3/8 53/4 53/4 35/8 25/8 25/8 29/32 29/32 29/32 29/32 29/32 5/8 5/8 5/8 5/8 5/8 /6 /6 3/4 3/4 35/6 35/6 35/6 35/6 35/6 35/6 35/6 35/6 2/4 2/4 7/6 7/6 7/6 55/6 55/6 55/6 55/6 55/6 55/6 3/4 3/4 3/ /8* 27/8* 27/8* 5/6 5/6 5/6 5/6 5/6 27/6 27/6 27/6 27/6 27/6 25/6 25/6 4/4 4/4 27/6 27/6 27/6 27/6 27/6 27/6 27/6 27/6 25/6 25/6 4/4 4/4 4/4 27/6 27/6 27/6 27/6 27/6 27/6 25/6 25/6 25/6 4/4 4/ /4 57/ WT Weights for all SureGrip bushed items are approximate and include the bushing. *BoredToSuit construction, minimum plain bore with 2 setscrews. P686TBW /5... TB Wood s C9

32 Synchronous TaperLock Sprocket 8 Dimensions SPROCKT TYPS The synchronous sprockets listed in the tables below are all stock sizes. All dimensions given are for the sprocket with the TaperLock bushing in place and are in inches only. Type A Type B Type C L L L Type A Type B Type C The figure following the sketch reference letter in the Type column indicates the construction of the sprocket. ( = Solid, 2 = Web, and 3 = Arms), and the letter indicates that the sprocket has flanges. PRODUCT NO. BUSHING NO. O TTH P.D. DIATRS Sprocket O.D. lange OR BLTS 2mm (.79 in.) WID 8mm PITCH (82) ace Width () = /8 P2282TL P2482TL P2682TL P2882TL P382TL P3282TL P3482TL P3682TL P3882TL P482TL P4482TL P4882TL P5682TL P6482TL P7282TL P882TL P982TL TL8 TL8 TL8 TL8 TL2 TL2 TL6 TL6 TL6 TL6 TL22 TL22 TL22 TL22 TL22 TL257 TL DINSIONS (INCHS) BOR TYP I.D. L in. ax B B B B B B B WT Weights for all TaperLock bushed items are approximate and include the bushing. Registered Trademark of Rockwell AutomationDodge. C TB Wood s P686TBW /5

33 Synchronous TaperLock Sprocket 8 Dimensions PRODUCT NO. BUSH ING NO. O TTH P.D. DIATRS Sprocket O.D. lange OR BLTS 3mm (.8 in ) WID. 8mm PITCH (83) ace Width () = P2283TL P2483TL P2683TL P2883TL P383TL P3283TL P3483TL P3683TL P3883TL P483TL P4483TL P4883TL P5683TL P6483TL P7283TL P883TL P983TL P283TL TL8 TL8 TL8 TL8 TL2 TL2 TL6 TL6 TL6 TL22 TL22 TL22 TL22 TL257 TL257 TL257 TL257 TL DINSIONS (INCHS) BOR TYP I.D. L in. ax B B OR BLTS 5mm (.97 in ) WID. 8mm PITCH (85) ace Width () = 23/8 P2885TL P385TL P3285TL P3485TL P3685TL P3885TL P485TL P4485TL P4885TL P5685TL P6485TL P7285TL P885TL P985TL P285TL TL8 TL2 TL2 TL6 TL6 TL6 TL22 TL22 TL22 TL257 TL257 TL257 TL257 TL32 TL B C2 C2 A A2 OR BLTS 85mm (3.35 in ) WID. 8mm PITCH (885) ace Width () = 33/4 P34885TL P36885TL P38885TL P4885TL P44885TL P48885TL P56885TL P64885TL P72885TL P8885TL P9885TL P2885TL TL65 TL65 TL6 TL22 TL22 TL22 TL257 TL257 TL32 TL32 TL32 TL A A WT Weights for all TaperLock bushed items are approximate and include the bushing. Registered Trademark of Rockwell AutomationDodge. P686TBW /5... TB Wood s C

34 Synchronous TaperLock Sprocket 4 Dimensions PRODUCT NO. BUSH ING NO. O TTH P.D. DIATRS Sprocket O.D. lange OR BLTS 4mm (.57 in ) WID. 4mm PITCH (44) ace Width () = 2/8 P2844TL P2944TL P344TL P3244TL P3444TL P3644TL P3844TL P444TL P4444TL P4844TL P5244TL P5644TL P644TL P6444TL P6844TL P7244TL P844TL P944TL P244TL TL22 TL22 TL22 TL22 TL22 TL257 TL257 TL257 TL257 TL257 TL257 TL257 TL32 TL32 TL32 TL32 TL32 TL32 TL DINSIONS (INCHS) BOR TYP I.D. L in. ax A2 A2 A2 A2 A2 OR BLTS 55mm (2.7 in ) WID. 4mm PITCH (455) ace Width () = 23/4 P28455TL P29455TL P3455TL P32455TL P34455TL P36455TL P38455TL P4455TL P44455TL P48455TL P52455TL P56455TL P6455TL P64455TL P68455TL P72455TL P8455TL P9455TL P2455TL TL22 TL22 TL257 TL257 TL257 TL257 TL257 TL257 TL257 TL32 TL32 TL32 TL32 TL32 TL32 TL32 TL32 TL32 TL A3 A3 A3 A2 A2 A3 A3 A WT Weights for all TaperLock bushed items are approximate and include the bushing. Registered Trademark of Rockwell AutomationDodge. C2 TB Wood s P686TBW /5

35 Synchronous TaperLock Sprocket 4 Dimensions PRODUCT NO. BUSH ING NO. O TTH P.D. DIATRS Sprocket O.D. lange OR BLTS 85mm (3.35 in ) WID. 4mm PITCH (485) ace Width () = 4 P28485TL P29485TL P3485TL P32485TL P34485TL P36485TL P38485TL P4485TL P44485TL P48485TL P52485TL P56485TL P6485TL P64485TL P68485TL P72485TL P8485TL P9485TL P2485TL TL22 TL22 TL257 TL257 TL257 TL32 TL32 TL32 TL32 TL32 TL3535 TL3535 TL3535 TL3535 TL3535 TL3535 TL3535 TL3535 TL DINSIONS (INCHS) BOR TYP I.D. L in. ax A2 A2 A3 OR BLTS 5mm (4.53 in ) WID. 4mm PITCH (45) ace Width () = 5/4 P345TL P3245TL P3445TL P3645TL P3845TL P445TL P4445TL P4845TL P5245TL P5645TL P645TL P6445TL P6845TL P7245TL P845TL P945TL P245TL TL257 TL257 TL257 TL32 TL32 TL32 TL3535 TL3535 TL44 TL44 TL44 TL4545 TL4545 TL4545 TL4545 TL4545 TL A2 A2 A WT Weights for all TaperLock bushed items are approximate and include the bushing. Registered Trademark of Rockwell AutomationDodge. L L L Type A Type B Type C P686TBW /5... TB Wood s C3

36 Synchronous Plus eatures And Benefits. IBRGLASS TNSION BR ATUR BNIT xcellent Dimensional Less aintenance Stability No Stretch Under Load Retensioning Generally not Required Allows for Small Pulley conomical Designs and Short Center Drives 2. OLDD TTH & BACKING ATUR BNIT Resists Damaging Longer Belt Life nvironmental actors Outstanding Bending Smooth Belt Operation Characteristics Superior olding Smooth Surface Characteristics Reduces Vibration 3. IPRGNATD NYLON WAR JACKT ATUR Durable Tooth Protection inimal Drag/ Reduces riction BNIT xtends Belt Life Smooth Precise Operation Synchronous Plus belts are capable of operating at temperatures of 3 with no adverse effects. Any time a belt is used in an elevated ambient temperature, the expected life will decrease. The relationship between ambient temperatures and belt life is shown in the chart below. As an example, at a temperature of 8, we would expect life to be 6% of the life that would be obtained at 85. LI vs TPRATUR 8 PRCNT LI TPRATUR, DGRS C4 TB Wood s P686TBW /5

37 Tolerances On Belt Length Dimensions Belt Length (mm) *Std. Length Tolerances (CentertoCenter) Over 254 to 38 ±.23 Over 38 to 58 ±.25 Over 58 to 762 ±.3 Over 762 to 6 ±.33 Over 6 to 27 ±.38 Over 27 to 524 ±.4 Over 524 to 778 ±.43 Over 778 to 232 ±.46 Over 232 to 2286 ±.48 Over 2286 to 254 ±.5 Over 254 to 2794 ±.53 Over 2794 to 348 ±.56 Over 348 to 332 ±.58 Belt Length (mm) *Std. Length Tolerances (CentertoCenter) Over 332 to 3556 ±.6 Over 3556 to 38 ±.64 Over 38 to 464 ±.66 Over 464 to 438 ±.69 Over 438 to 4572 ±.7 Over 4572 to 4826 ±.74 Over 4826 to 58 ±.76 Over 58 to 5534 ±.79 Over 5534 to 5588 ±.8 Over 5588 to 5842 ±.84 Over 5842 to 696 ±.86 Over 696 to 635 ±.89 Over 635 to 664 ±.9 Over 664 to 686 ±.94 *NOT: The length tolerances given for positive drive belts refer to the center to center tolerance between belts when checked on a standard measuring fixture. The actual pitch length tolerance is twice the value shown. If a special tension member is used, consult the factory for proper length tolerances. BLT DINSIONS 5mm 5mm (.9685) 3.6mm (.42) 4mm 4mm (.558).7mm (.42) 2.mm (.77) 8mm 8mm (.3496) 5.7mm (.225) 6.mm (.24) 2mm 2mm (.7874) 3.8mm (.545) 3.3mm (.29) 8.5mm (.335) Center Distance Installation and Takeup Allowance Decrease in Center Distance for Installation Pitch Length > 525mm 52535mm <35mm 5 Both langed One langed Both langed One langed Both langed One langed Both langed One langed Takeup in Center Distance for Installation (All Pitches) P686TBW /5... TB Wood s C5

38 C6 TB Wood s P686TBW /5 Synchronous Plus Belts Dimensions The bold number is the belt width in millimeters, while the number directly under it is the width in inches. PART NUBR XAPL: 244 SYNCHRONOUS PLUS BLT Belt Length & Pitch Code Pitch Length of Teeth Width Code in. mm Approx Wt. (lbs.) Belt Length & Pitch Code Pitch Length of Teeth Width Code in. mm Approx Wt. (lbs.) Belt Length & Pitch Code Pitch Length of Teeth Width Code in. mm Approx Wt. (lbs.) Belt Length & Pitch Code Pitch Length of Teeth Width Code in. mm Approx Wt. (lbs.) Pitch Belts 4 Pitch Belts 8 Pitch Belts 2 Pitch Belts

39 Synchronous Twin Power Belting Sample Belt Designation TP282 Dimensions TWIN POWR 2 LONG 8 PITCH 2 WID TWIN POWR RATINGS 5 Same as Standard Synchronous Plus Belting 8.66 Times Standard Synchronous Plus Belting 4 less than 5mm Length.66 Times Standard Synchronous Plus Belting 4 ver 5mm Length Same as Standard Synchronous Plus Belting 2 Not Available in Twin Power DINSIONS 5mm 5mm (.969) 5.2mm (.25).9mm (.75) 8mm 8mm (.349) 7.8mm (.37) 3.2mm (.26) 4mm 4mm (.552) 4.5mm (.57) 5mm (.236) Twin Power Belting is available in most lengths offered in standard single sided belts. (ref. page C 6) P686TBW /5... TB Wood s C7

40 Balancing Standards Proper balance of rotating products is important for smooth, vibrationfree operation. Standard balance of Wood s stock products is a one plane balance. Depending on the face width, outside diameter, and operating speed a higher precision balance may be required for smooth operation. In those cases a twoplane balance is suggested. Note: Two plane balance is for smooth operation only and DOS NOT increase the maximum safe operating speed of the product. Stock cast iron wheels may not exceed 6,55 feet per minute; and ductile iron wheels are limited to, P. (P = sheave outside diameter x RP x.262) The nomograph below may be used as a guideline to determine when twoplane balance is recommended. To use this chart lay a straightedge between the diameter of the part on the left of the chart and the face width of the part on the right. The straight edge will intersect the slanted scale in the center of the chart. When the operating speed is greater than the intersection point a twoplane balance is recommended. xample: If a 2 in. diameter x in. (23 mm) face width sprocket runs faster than rpm, dynamic balancing is recommended. 55 Inches illimeters DIATR IN INCHS AC WIDTH Inches and illimeters AXIU RP RCONDD OR STANDARD BALANC C8 TB Wood s P686TBW /5

41 Synchronous a: driver (prime mover) Class of driver Class I Class II Class III omentary Peak Load, % of Rated Load AC lectric otors: Single Phase Squirrel Cage NA design A 36 rpm 8 rpm 2 rpm 9 rpm NA design B 36 rpm 8 rpm 2 rpm 9 rpm NA design C 8 rpm 2 rpm 9 rpm NA design D NA design Wound Rotor 8 rpm 2 rpm 9 rpm 49% 5 to 249% 25 to 4% 4 HP up HP up 5 HP up 5 HP up all thru 3 HP 5 thru 75 HP 3/4 thru HP thru 3 HP 5 HP up 5 HP up 5 HP up 2 HP up 5 HP up 7 HP up all 2 HP 5 HP 7 HP all thru 3 HP thru 3 HP thru 3 HP 3/4 thru 3 HP thru HP 5 thru HP 3 and 5 HP all 2 to 5 HP 2 to HP to 5 HP Synchronous normal torque high torque DC lectric otors shunt compound series ngines int combust 8 cyl up 6 cyl 4 cyl or less Hydraulic otors, Line Shafts c: Additional Service actors Operating Conditions Intermittent or seasonal Add for 6 hr service Add for 6 24 hr service Add for each idler Speedup Drives all Sub. Add.2 Add.4 Add.2 or speedup drives, add to the basic service factor the additional factor given below. Speedup Ratio Range to to to 2.49 Unusual Conditions Additional actor none..2 Speedup Ratio Range 2.5 to & over Additional actor.3.4 Additional service factors are required for unusual conditions such as load reversal, heavy shock, plugged motor stop, electric brake. These should be determined by a transmission specialist. b: Basic Service actors of driven achines driven achines Agitators, ixers (paddle or propeller) liquid semiliquid Service actors Class I.2.3 Class II.4.5 Class III.6.7 Bakery achinery, Dough ixers Brick and Clay achinery augers, mixers, granulators pug mills Centrifuges.5.7 Compressors reciprocating* centrifugal Conveyors belt, light package; oven belt: ore, coal, sand apron, bucket, elevator, pan flight, screw ans, blowers Centrifugal, induced draft exhausters propeller, mine fans, positive blowers Generators and xciters Hammer ills Hoists, levators Laundry achinery general extractors, washers Line Shafts achine Tools drill presses, lathes, screw machines boring mills, grinders milling machines, shapers ills ball, rod, pebble, etc.9 2. Paper achinery agitators, calenders, dryers beaters, jordans, Nash pumps, pulpers Printing achinery presses: newspaper, rotary, embossing, flat bed, magazine; linotype machines; cutters; folders Pumps centrifugal, gear, rotary, pipeline reciprocating* Rubber Plant achinery Saw ill achinery Screens vibrating (shakers) drum, conical Textile achinery looms, spinning frames, twisters warpers, reels Woodworking achinery lathes, band saws jointer, circular saws, planers * Note: When the driven sprocket is used as a flywheel to reduce speed fluctuations a specially constructed sprocket may be required. Obtain the WR 2 of the unit and consult TB Wood s ngineering..7 P686TBW /5... TB Wood s C9

42 Pitch Selection Chart RP O ASTST SHAT OTOR HORSPOWR C2 TB Wood s P686TBW /5

43 otor Horsepower BLT LNGTH = 2 x C +.57 x (D + d) + [ (D d) 2 / (4 x C) ] CNTR DISTANC = x [ A h x (D d) ] /2 3 /4 / / inimum Recommended Sprocket Pitch Diameters for General Purpose lectric otors Synchronous Belts * otor RP (6 Cycle and 5 Cycle lectric otors) * * 6 95* * * Indicates 5 cycle RP electric motors. # rame 444T use 8.6. Data in the white area is from NA Standards G442 of June 972 and G443 of January 968. The data in the shaded area is a composite of various motor manufacturers data. They are usually conservative, and a smaller sprocket may be permitted. Consult the motor manufacturer data Synchronous Plus # * Drive Selection WHR: C = Center Distance (in.) L = Belt Length (in.) A = L.57 x (D + d) D = P.D. of larger sprocket (in.) d = P.D. of smaller sprocket (in.) h = actor from chart below D d A h D d A h D d A h D d A h Center distances must be fixed and rigid. P686TBW /5... TB Wood s C2

44 Synchronous Plus Drive Selection Standard otor Speed Reduction or : Ratio Drives xample: A 75 HP 6 RP NA B motor is driving a liquid material agitator operating at 9 RP, 24 hours a day. otor shaft is 27/8 diameter, agitator shaft is 23/4, center distance is 44. Procedure Step #: Calculate the Design Horsepower DHP = DriveR HP x service factor (page C 9) Step #2: Choose the Belt Pitch Belt Pitch Selection Guide (page C 2) Step #3: Check NA recommended minimum sprocket pitch diameter (page C 2) Step #4: Calculate Speed Ratio Speed Ratio = aster RP / Slower RP Step #5: In the Drive Selection Tables corresponding to the correct belt pitch, locate the drive line with the same ratio. In the event of multiple drive lines, drives using larger diameters are usually more economical. Step #6: Note the following information from the drive line: Number teeth DriveR Number teeth DriveN Actual RP Under corresponding motor RP Raw HP for belt width Under corresponding motor RP (When considering belt width, refer to design HP calculation) Select the desired CD To the right of the RP and HP Belt Length actor Shaded above the CD Belt Length Column header above the CD Step #7: Calculate the Corrected HP for the Drive CHP = Raw HP x Belt Length actor Compare the CHP to the DHP and pick the belt width Step #8: Check the Dynamic Balance recommendations Reference Chart (page C 8) Step #9: Specify drive components Reference component dimensional page for Product Number xample Service factor liquid agitator =.4 Adder for 6 24 hours/day =.4 DHP = 75 HP x.8 sf = HP and 6 RP indicates the use of 4 pitch NA minimum for a 75 HP 6 RP motor 9. diameter sprocket Speed ratio = 6 RP / 9 RP =.29 Drive lines 68, 69, and 7 all are.29 ratio. Line 68 and 7: The driver is below NA recommended. Use drive line 69. rom Line 69 Number teeth DriveR = 56 Number teeth DriveN = 72 DriveN 92 when 6 RP Step # the DHP is 35, 85 mm wide = 5.4 HP CD = Belt length factor =.5 Belt length = 35 85mm wide CHP = 5.4 x.5 = mm meets our DHP and is the belt to use. OK as standard: P56485 static balance OK as standard: P72485 static balance Item Product Ref. Page DR Sprocket: P56485 P56485 C 7 DR Bushing: x 27/8 278 A 5 DN Sprocket: P72485 P72485 C 7 DN Bushing: x 23/4 234 A 5 Belt: C 6 C22 TB Wood s P686TBW /5

45 Speeds Other than Common otor Speeds and Speedup Applications Synchronous Plus Drive Selection xample: A 2 HP 75 RP NA B motor Cface mounted to a 5 : gear reducer with an output of 7 RP is driving an ore belt conveyor operating at 3 RP, 5 hours a day. Reducer shaft is 3 diameter, mixer shaft is 3/4, approximate center distance is 4. Procedure Step #: Calculate the Design Horsepower DHP = DriveR HP x service factor (page C 9) Step #2: Choose the Belt Pitch Belt Pitch Selection Guide (page C 2) Step #3: Check NA recommended minimum sprocket pitch diameter (page C 2) Step #4: Calculate Speed Ratio Speed Ratio = aster RP / Slower RP Step #5: In the Drive Selection Tables corresponding to the correct belt pitch, locate the drive line with the same ratio. In the event of multiple drive lines, drives using larger diameters are usually more economical. Step #6: Note the following information from the drive line: Number teeth DriveR Number teeth DriveN Select the desired CD To the right of the RP and HP Belt Length actor Shaded above the CD Belt Length Column header above the CD Step #7: In the HP Rating Tables, following the Drive Selection Tables, locate the proper charts for the belt pitch in use. Locate the number of teeth on the smallest sprocket at the top of the chart and its speed along the left side. At the intersection of these lines will be located the Raw HP of the drive. (When considering belt width refer to design HP calculation) Step #8: Calculate the Corrected HP for the Drive CHP = Raw HP x Belt Length actor Compare the CHP to the DHP and pick the belt width Step #9: Check the Dynamic Balance recommendations Reference Chart (page C 8) Step #: Specify drive components Reference component dimensional page for Product Number xample Service factor ore belt conveyor =.4 Add.2 for 5 hours a day Adder for. ratio speedup = none DHP = 2 HP x.6 sf = 32 2 HP and 7 RP indicates the use of 4 pitch Does not apply Driver not a NA motor Driver shaft Reducer Speed ratio = 3 RP / 7 RP =. Drive lines 35 & 36 are both. ratio Using the guideline of larger diameter being more economical, use line 36. rom Line 36 Number teeth DriveR = 8 Number teeth DriveN = 72 CD = 4.6 Belt length factor =.5 Belt length = 35 Smallest sprocket = 72 tooth astest RP = 3 Step # Design HP = 32 HP can be interpolated between and 2 RP 55mm wide = approximately 24. HP 85mm wide = approximately 38.9 HP 55mm wide CHP = 24. x.5 = mm wide CHP = 38.9 x.5 = mm meets our DHP and is the belt to use OK as standard: P8485 static balance OK as standard: P72485 static balance Item Product Ref. Page DR Sprocket: P8485 P8485 C 7 DR Bushing: x 3 3 A 5 DN Sprocket: P72485 P72485 C 7 DN Bushing: x 3/4 34 A 5 Belt: C 6 P686TBW /5... TB Wood s C23

46 Synchronous Plus Drive 5 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR 335 RP DriveR DRIVR DRIVN Horsepower Horsepower Horsepower DN DN DN RP RP RP Teeth PD (in) Teeth PD (in) ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C24 TB Wood s P686TBW /5

47 Synchronous Plus Drive 5 Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C25

48 Synchronous Plus Drive 5 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR 355 RP DriveR DRIVR DRIVN Horsepower Horsepower Horsepower DN DN DN RP RP RP Teeth PD (in) Teeth PD (in) ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C26 TB Wood s P686TBW /5

49 CNTR DISTANC BLT LNGTH Length Correction actor Synchronous Plus Drive 5 Selection Tables Line P686TBW /5... TB Wood s C27

50 Synchronous Plus Drive 5 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR 355 RP DriveR DRIVR DRIVN Horsepower Horsepower Horsepower DN DN DN RP RP RP Teeth PD (in) Teeth PD (in) ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C28 TB Wood s P686TBW /5

51 Synchronous Plus Drive 5 Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C29

52 Synchronous Plus Drive 8 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C3 TB Wood s P686TBW /5

53 CNTR DISTANC BLT LNGTH Length Correction actor Synchronous Plus Drive 8 Selection Tables Line P686TBW /5... TB Wood s C3

54 Synchronous Plus Drive 8 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN Horsepower Horsepower DN DN RP RP Teeth PD (in) Teeth PD (in) ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C32 TB Wood s P686TBW /5

55 Synchronous Plus Drive 8 Selection tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C33

56 Synchronous Plus Drive 8 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C34 TB Wood s P686TBW /5

57 Synchronous Plus Drive 8 Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line no P686TBW /5... TB Wood s C35

58 Synchronous Plus Drive 8 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN Horsepower Horsepower DN DN RP RP Teeth PD (in) Teeth PD (in) ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C36 TB Wood s P686TBW /5

59 CNTR DISTANC BLT LNGTH Length Correction actor Synchronous Plus Drive 8 Selection Tables Line P686TBW /5... TB Wood s C37

60 Synchronous Plus Drive 4 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating >.8.8 C38 TB Wood s P686TBW /5

61 Synchronous Plus Drive 4 Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C39

62 Synchronous Plus Drive 4 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating >.8.8 C4 TB Wood s P686TBW /5

63 Synchronous Plus Drive 4 Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C4

64 Synchronous Plus Drive 4 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C42 TB Wood s P686TBW /5

65 CNTR DISTANC BLT LNGTH Length Correction actor Synchronous Plus Drive 4 Selection Tables Line P686TBW /5... TB Wood s C43

66 Synchronous Plus Drive 4 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating >.9.9 C44 TB Wood s P686TBW /5

67 CNTR DISTANC BLT LNGTH Length Correction actor Synchronous Plus Drive 4 Selection Tables Line P686TBW /5... TB Wood s C45

68 Synchronous Plus Drive 4 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C46 TB Wood s P686TBW /5

69 CNTR DISTANC BLT LNGTH Length Correction actor Synchronous Plus Drive 4 Selection Tables Line P686TBW /5... TB Wood s C47

70 Synchronous Plus Drive 2 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C48 TB Wood s P686TBW /5

71 Synchronous Plus Drive 2 Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C49

72 Synchronous Plus Drive 2 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C5 TB Wood s P686TBW /5

73 Synchronous Plus Drive 2 Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C5

74 Synchronous Plus Drive 2 Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C52 TB Wood s P686TBW /5

75 CNTR DISTANC BLT LNGTH Length Correction actor Synchronous Plus Drive 2 Line Selection Tables P686TBW /5... TB Wood s C53

76 Synchronous Plus Drive Horsepower Ratings 5 5 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. Smallest Sprocket RP No Teeth PD (in.) C54 TB Wood s P686TBW /5

77 Synchronous Plus Drive Horsepower Ratings 5 25 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. Smallest Sprocket RP No Teeth PD (in.) P686TBW /5... TB Wood s C55

78 Synchronous Plus Drive Horsepower Ratings 8 2 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. No Teeth PD (in.) Smallest Sprocket RP Smallest Sprocket RP WID C56 TB Wood s P686TBW /5

79 Synchronous Plus Drive Horsepower Ratings 8 5 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. No Teeth PD (in.) Smallest Sprocket RP Smallest Sprocket RP WID P686TBW /5... TB Wood s C57

80 Synchronous Plus Drive Horsepower Ratings 4 4 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. No Teeth PD (in.) Smallest Sprocket RP Smallest Sprocket RP WID DRIVS WITHIN SHADD ARA AY GNRAT OBJCTIONABL NOIS LVLS UNLSS ACOUSTICALLY GUARDD C58 TB Wood s P686TBW /5

81 Synchronous Plus Drive Horsepower Ratings 4 85 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. No Teeth PD (in.) Smallest Sprocket RP Smallest Sprocket RP WID DRIVS WITHIN SHADD ARA AY GNRAT OBJCTIONABL NOIS LVLS UNLSS ACOUSTICALLY GUARDD P686TBW /5... TB Wood s C59

82 Synchronous Plus Drive Horsepower Ratings 4 7 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. Teeth PD (in.) Smallest Sprocket RP DRIVS WITHIN SHADD ARA AY GNRAT OBJCTIONABL NOIS LVLS UNLSS ACOUSTICALLY GUARDD C6 TB Wood s P686TBW /5

83 Synchronous Plus Drive Horsepower Ratings 2 5 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. Teeth PD (in.) Smallest Sprocket RP Smallest Sprocket RP WID DRIVS WITHIN SHADD ARA AY GNRAT OBJCTIONABL NOIS LVLS UNLSS ACOUSTICALLY GUARDD P686TBW /5... TB Wood s C6

84 Synchronous Plus Drive Horsepower Ratings 2 23 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. Teeth PD (in.) Smallest Sprocket RP Smallest Sprocket RP WID DRIVS WITHIN SHADD ARA AY GNRAT OBJCTIONABL NOIS LVLS UNLSS ACOUSTICALLY GUARDD C62 TB Wood s P686TBW /5

85 Synchronous Plus Drive Horsepower Ratings 2 Selection Tables 34 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. Teeth PD (in.) Smallest Sprocket RP DRIVS WITHIN SHADD ARA AY GNRAT OBJCTIONABL NOIS LVLS UNLSS ACOUSTICALLY GUARDD P686TBW /5... TB Wood s C63

86 Notes C64 TB Wood s P686TBW /5

87 QT Power Chain Sprockets & Belts C2 Requires little retensioning Abrasion resistant Less drive maintenance P686TBW /5... TB Wood s C2

88 QT Power Chain Sprocket 8 Dimensions SPROCKT TYPS The QT Power Chain sprockets listed in the tables below are all stock sizes. All dimensions given are for the sprocket with the SureGrip bushing in place and are in inches only. Type A Type B Type C Type D Type Type PB Type L O. D. I. D. L O. D. I. D. L O. D. I. D. O. D. I. D. O. D. I. D. L L L L O. D. I. D. K O. D. I. D. L K K K K Type A Type B Type C Type D Type Type PB* BoredToSuit The figure following the sketch reference letter in the Type column indicates the construction of the sprocket. ( = Solid, 2 = Web, and 3 = Arms), and the letter indicates that the sprocket has flanges. Type L PRODUCT NO. BUSH ING NO. O TTH P.D. DIATRS Sprocket O.D. lange TYP I.D. K L in. ax. DUAL DRILLD (INCH/TRIC) DINSIONS (INCHS) OR BLTS 2 mm (.47 in.) WID 8mm PITCH (8 2) ace Width () = 2 mm (.83 in.) Dual Drilled (inch /metric) W2282* PB *..9 W2482 JA W2682 JA W2882 QT W382 QT W3282 QT W3482 SH D W3682 SH D W3882 SH D W482 SH D W4482 SDS D W4882 SDS D W5682 SDS D W6482 SDS D W7282 SDS D BOR WT. W882 SDS D W982 SDS D W282 SK C W4482 SK C W9282 S C Weights for all SureGrip bushed items are approximate and include the bushing. *BoredToSuit construction, minimum plain bore with 2 setscrews. Refer to page C2 9 for balancing standards. Drilled for both inch and metric bushing hardware. On new production manufactured after Oct., 998. C22 TB Wood s P686TBW /5

89 QT Power Chain Sprocket 8 Dimensions NO. DIATRS DINSIONS (INCHS) BOR PRODUCT BUSH O O.D. TYP NO. ING P.D. I.D. K L in. ax. TTH Sprocket lange WT. OR BLTS 22 mm (.86 in.) WID 8mm PITCH (8 22) ace Width () = 3 mm (.22 in.) Dual Drilled (inch /metric) W22822* PB *..2 W24822 JA W26822 JA W28822 QT W3822 QT W32822 QT C W34822 SH D W36822 SH D W38822 SH D W4822 SH D DUAL DRILLD (INCH/TRIC) W44822 SDS D W48822 SDS D W56822 SDS D W64822 SDS D W72822 SDS D W8822 SDS D W9822 SDS D W2822 SK C W44822 SK C W92822 S C OR BLTS 35 mm (.38 in.) WID 8mm PITCH (8 35) ace Width () = 44 mm (.73 in.) Dual Drilled (inch /metric) W22835* PB *..6 W24835* PB * W26835* PB * W28835 QT W3835 QT W32835 QT W34835 SH W36835 SH W38835 SH W4835 SH D DUAL DRILLD (INCH/TRIC) W44835 SD D W48835 SD D W56835 SK D W64835 SK D W72835 SK D W8835 S D W9835 S D W2835 S D W C W C OR BLTS 6 mm (2.36 in.) WID 8mm PITCH (8 6) ace Width () = 7 mm (2.76 in.) Dual Drilled (inch /metric) W2286* PB *. 2.2 W2486* PB * W2686* PB * W2886* PB *.5 4. W386* PB * W3286* PB * W3486* PB * W3686 SKL L W3886 SKL L W486 SKL L DUAL DRILLD (INCH/TRIC) W4486 SL L W4886 SL L W5686 L L W6486 S W W W A W C W C W C Weights for all SureGrip bushed items are approximate and include the bushing. *BoredToSuit construction, minimum plain bore with 2 setscrews. Refer to page C2 9 for balancing standards. Drilled for both inch and metric bushing hardware. On new production manufactured after Oct., 998. P686TBW /5... TB Wood s C23

90 QT Power Chain Sprocket 4 Dimensions Type A Type B Type C Type D Type Type PB Type L O. D. I. D. L O. D. I. D. L O. D. I. D. O. D. I. D. O. D. I. D. L L L L O. D. I. D. K O. D. I. D. L K K K K Type A Type B Type C Type D Type Type PB* BoredToSuit The figure following the sketch reference letter in the Type column indicates the construction of the sprocket. ( = Solid, 2 = Web, and 3 = Arms), and the letter indicates that the sprocket has flanges. Type L NO. DIATRS DINSIONS (INCHS) BOR PRODUCT BUSH O O.D. TYP NO. ING P.D. I.D. K L in. ax. TTH Sprocket lange WT. OR BLTS 2 mm (.79 in.) WID 4mm PITCH (4 2) ace Width () = 3 mm (.22 in.) Dual Drilled (inch /metric) W2842 SK D W2942 SK D W342 SK D W3242 SK D W3442 SK D W3642 S C W3842 S C W442 S C W C W C DUAL DRILLD (INCH/TRIC) W C W C W C W C W C W C W C W C W C W C W C W9242 J C W2642 J C OR BLTS 42 mm (.65 in.) WID 4mm PITCH (4 42) ace Width () = 53 mm (2.9 in.) Dual Drilled (inch /metric) W28442 SK W29442 SK W3442 SK D W32442 SK D W34442 S W36442 S D W38442 S D W4442 S D W D W D DUAL DRILLD (INCH/TRIC) W D W D W D W D W D W D W D W C W C W C W C W92442 J C W26442 J C Weights for all SureGrip bushed items are approximate and include the bushing. Refer to page C2 9 for balancing standards. Drilled for both inch and metric bushing hardware up thru W684 sprocket. On new production manufactured after Oct., 998. C24 TB Wood s P686TBW /5

91 QT Power Chain Sprocket 4 PRODUCT NO. BUSH ING NO. O TTH P.D. DIATRS O.D. Sprocket lange DINSIONS (INCHS) BOR TYP I.D. K L in. ax. OR BLTS 65 mm (2.56 in.) WID 4mm PITCH (4 65) ace Width () = 77 mm (3.3 in.) W28465 SL L W29465 SL L W3465 L L W32465 L L W34465 L L W36465 L L W38465 L L W4465 L L W D W D W D W C W C W C W C W C W C W C W2465 J C W C W C W C W C OR BLTS 9 mm (3.54 in.) WID 4mm PITCH (4 9) ace Width () = 3 mm (4.6 in.) W2849* PB * W2949* PB * W349 L L W3249 L L W3449 L L W3649 L L W3849 L L W449 L L W4449 L L W4849 L L W D W D W D W D W D W D W849 J C W949 J C W249 J C W C W C W C W C OR BLTS 2 mm (4.72 in.) WID 4mm PITCH (4 2) ace Width () = 33 mm (5.24 in.) W2842* PB * W2942* PB * W342 L L W3242 L L W3442 L L W3642 L L W3842 L L W442 L L W4442 L L W4842 L L W W W W6442 J D W6842 J D W7242 J D W842 J D W C W C W C W C W9242 N C W2642 N C WT. Weights for all SureGrip bushed items are approximate and include the bushing. *BoredToSuit construction, minimum plain bore with 2 setscrews. Refer to page C2 9 for balancing standards. P686TBW /5... TB Wood s C25

92 QT Power Chain Construction QT Power Chain offers performance that soars. QT Power Chain is a custom construction that offers a solution to problem drives. With its quality materials, yielding bestinclass performance, this durable synchronous belt can eliminate the unnecessary downtime that competitive belts offer. Designed for long life, QT Power Chain can provide virtually maintenancefree operation. Rubber Compounding This crosslinked elastomer is formulated to resist tooth deformity and increase tooth rigidity, increasing belt life and decreasing replacement costs. Its chemical stability resists the effects of oils, coolants, heat and ozone. Tooth profile The demands of synchronous drives put additional strain on the belt and tooth surface, for high speed and low speed applications. The QT Power Chain tooth profile resists ratcheting and provides accurate positioning for synchronous drive applications. Tensile embers The tensile members provide excellent dimensional stability and high impact strength. Operating at a consistent tension, QT Power Chain requires little retensioning and less drive maintenance. Tooth acing / Wear Jackets Designed for higher loads and abrasion resistance, the facing provides a reduced coefficient of friction so that the belt meshes easier with pulleys. C26 TB Wood s P686TBW /5

93 Belt Length (mm) *NOT: Over 254 to 38 ±.23 Over 38 to 58 ±.25 Over 58 to 762 ±.3 Over 762 to 6 ±.33 Over 6 to 27 ±.38 Over 27 to 524 ±.4 Over 524 to 778 ±.43 Over 778 to 232 ±.46 Over 232 to 2286 ±.48 Over 2286 to 254 ±.5 Over 254 to 2794 ±.53 Over 2794 to 348 ±.56 Over 348 to 332 ±.58 *Std. Length Tolerances (CentertoCenter) Belt Length (mm) Over 332 to 3556 ±.6 Over 3556 to 38 ±.64 Over 38 to 464 ±.66 Over 464 to 438 ±.69 Over 438 to 4572 ±.7 Over 4572 to 4826 ±.74 Over 4826 to 58 ±.76 Over 58 to 5534 ±.79 Over 5534 to 5588 ±.8 Over 5588 to 5842 ±.84 Over 5842 to 696 ±.86 Over 696 to 635 ±.89 Over 635 to 664 ±.9 Over 664 to 686 ±.94 *Std. Length Tolerances (CentertoCenter) Belt Length Tolerances The length tolerances given for positive drive belts refer to the center to center tolerance between belts when checked on a standard measuring fixture. The actual pitch length tolerance is twice the value shown. If a special tension member is used consult the factory for proper length tolerances. BLT DINSIONS 8mm 8mm (.3496) 5.7mm (.225) 3.3mm (.29) 4mm 4mm (.558).7mm (.42) 6.mm (.24) P686TBW /5... TB Wood s C27

94 QT Power Chain Belts Dimensions QT POWR CHAIN 8mm PITCH SYNCHRONOUS BLTS* Belt Length Pitch Length (mm) Pitch Length (inches) of Teeth 2mm..47in. Approx. Weight (Lbs) 22mm..87in. 35mm..38in. 6mm. 2.36in QT POWR CHAIN 4mm PITCH SYNCHRONOUS BLTS* Belt Length Pitch Length (mm) Pitch Length (inches) of Teeth 2mm..79in. 42mm..65in. Approx. Weight (Lbs) 65mm. 2.56in. 9mm. 3.54in. 2mm. 4.72in * Part Number xample: 2465W ( W suffix indicate QT Power Chain). Refer to page C2 7 for belt tolerances C28 TB Wood s P686TBW /5

95 Balancing Standards Proper balance of rotating products is important for smooth, vibrationfree operation. Standard balance of Wood s stock products is a one plane balance. Depending on the face width, outside diameter, and operating speed a higher precision balance may be required for smooth operation. In those cases a twoplane balance is suggested. Note: Two plane balance is for smooth operation only and DOS NOT increase the maximum safe operating speed of the product. Stock cast iron wheels may not exceed 6,55 feet per minute; and ductile iron wheels are limited to, P. (P = sheave outside diameter x RP x.262) The nomograph below may be used as a guideline to determine when twoplane balance is recommended. To use this chart lay a straightedge between the diameter of the part on the left of the chart and the face width of the part on the right. The straight edge will intersect the slanted scale in the center of the chart. When the operating speed is greater than the intersection point a twoplane balance is recommended. xample: If a 2 in. diameter x 4 in. (9 mm) face width sprocket runs faster than 7 rpm, dynamic balancing is recommended. 55 Inches illimeters DIATR IN INCHS AC WIDTH Inches and illimeters AXIU RP RCONDD OR STANDARD BALANC P686TBW /5... TB Wood s C29

96 Synchronous Service actors a: driver (prime mover) Class of driver Class I Class II Class III omentary Peak Load, % of Rated Load AC lectric otors: Single Phase Squirrel Cage NA design A NA design B NA design C NA design D NA design Wound Rotor 36 rpm 8 rpm 2 rpm 9 rpm 36 rpm 8 rpm 2 rpm 9 rpm 8 rpm 2 rpm 9 rpm 8 rpm 2 rpm 9 rpm 49% 5 to 249% 4 HP up HP up 5 HP up 5 HP up all thru 3 HP 5 thru 75 HP 3/4 thru HP thru 3 HP 5 HP up 5 HP up 5 HP up 2 HP up 5 HP up 7 HP up all 2 HP 5 HP 7 HP 25 to 4% all thru 3 HP thru 3 HP thru 3 HP 3/4 thru 3 HP thru HP 5 thru HP 3 and 5 HP all 2 to 5 HP 2 to HP to 5 HP Synchronous normal torque high torque DC lectric otors shunt compound series ngines int combust 8 cyl up 6 cyl 4 cyl or less Hydraulic otors, Line Shafts c: Additional Service actors Operating Conditions Intermittent or seasonal Add for 6 hr service Add for 6 24 hr service Add for each idler Speedup Drives or speedup drives, add to the basic service factor the additional factor given below. Speedup Ratio Range to to to 2.49 Unusual Conditions Additional actor none..2 Sub. Add.2 Add.4 Add.2 Speedup Ratio Range 2.5 to & over all Additional actor.3.4 Additional service factors are required for unusual conditions such as load reversal, heavy shock, plugged motor stop, electric brake. These should be determined by a transmission specialist. b: Basic Service actors of driven achines driven achines Agitators, ixers (paddle or propeller) liquid semiliquid Class I.2.3 Class II.4.5 Class III.6.7 Bakery achinery, Dough ixers Brick and Clay achinery augers, mixers, granulators pug mills Centrifuges.5.7 Compressors reciprocating* centrifugal Conveyors belt, light package; oven belt: ore, coal, sand apron, bucket, elevator, pan flight, screw ans, blowers Centrifugal, induced draft exhausters propeller, mine fans, positive blowers Generators and xciters Hammer ills Hoists, levators Laundry achinery general extractors, washers Line Shafts achine Tools drill presses, lathes, screw machines boring mills, grinders milling machines, shapers ills ball, rod, pebble, etc.9 2. Paper achinery agitators, calenders, dryers beaters, jordans, Nash pumps, pulpers Printing achinery presses: newspaper, rotary, embossing, flat bed, magazine; linotype machines; cutters; folders Pumps centrifugal, gear, rotary, pipeline reciprocating* Rubber Plant achinery Saw ill achinery Screens vibrating (shakers) drum, conical Textile achinery looms, spinning frames, twisters warpers, reels Woodworking achinery lathes, band saws jointer, circular saws, planers * Note: When the driven sprocket is used as a flywheel to reduce speed fluctuations a specially constructed sprocket may be required. Obtain the WR 2 of the unit and consult TB Wood s ngineering..7 C2 TB Wood s P686TBW /5

97 Pitch Selection RP O ASTST SHAT OTOR HORSPOWR US OTOR OR BASIC HORSPOWR P686TBW /5... TB Wood s C2

98 QT Power Chain Drive Selection otor Horsepower inimum Recommended Sprocket Pitch Diameters for General Purpose lectric otors Synchronous Belts * otor RP (6 Cycle and 5 Cycle lectric otors) * * 6 95* * 2. 3/ * # * Indicates 5 cycle RP electric motors. # rame 444T use 8.6. Data in the white area is from NA Standards G442 of June 972 and G443 of January 968. The data in the shaded area is a composite of various motor manufacturers data. They are usually conservative, and a smaller sprocket may be permitted. Consult the motor manufacturer data. BLT LNGTH = 2 x C +.57 x (D + d) + [ (D d) 2 / (4 x C) ] CNTR DISTANC = x [ A h x (D d) ] WHR: C = Center Distance (in.) L = Belt Length (in.) A = L.57 x (D + d) D = P.D. of larger sprocket (in.) d = P.D. of smaller sprocket (in.) h = actor from chart below Center distances must be fixed and rigid. D d A h D d A h D d A h D d A h C22 TB Wood s P686TBW /5

99 QT Power Chain Drive Selection Standard otor Speed Reduction or : Ratio Drives xample: A 2 HP 6 RP NA B motor is driving a light package conveyor operating at 55 RP, 4 hours a day. otor shaft is 7/8 diameter, conveyor shaft is 2, center distance is 3. Procedure Step #: Calculate the Design Horsepower DHP = DriveR HP x service factor (page C2 ) Step #2: Choose the Belt Pitch Belt Pitch Selection Guide (page C2 ) Step #3: Check NA recommended minimum sprocket pitch diameter (page C2 2) Step #4: Calculate Speed Ratio Speed Ratio = aster RP / Slower RP Step #5: In the Drive Selection Tables corresponding to the correct belt pitch, locate the drive line with the same ratio. In the event of multiple drive lines, drives using larger diameters are usually more economical. Step #6: Note the following information from the drive line: Number teeth DriveR Number teeth DriveN Actual RP Under corresponding motor RP Raw HP for belt width Under corresponding motor RP (When considering belt width, refer to design HP calculation) Select the desired CD To the right of the RP and HP Belt Length actor Shaded above the CD Belt Length Column header above the CD Step #7: Calculate the Corrected HP for the Drive CHP = Raw HP x Belt Length actor Compare the CHP to the DHP and pick the belt width Step #8: Check the Dynamic Balance recommendations Reference Chart (page C2 9) Step #9: Specify drive components Reference component dimensional page for Product Number xample Service factor light package conveyor =.2 Adder for 6 hours/day =.2 DHP = 2 HP x.4 sf = 28 2 HP and 6 RP indicates the use of 8 pitch NA minimum for a 2 HP 6 RP motor 4.7 diameter sprocket Speed ratio = 6 RP / 55 RP = 2.25 Drive lines 3, 3, and 32 all are 2.25 ratio. Line 3 and 3: The driver is below NA recommended. Use drive line 32. rom Line 32 Number teeth DriveR = 64 Number teeth DriveN = 44 DriveN 56 when 6 RP Step # the DHP is 28, 22 mm wide = hp; 35 mm wide = 4.72 hp CD = 3.6 Belt length factor =.3 Belt length = mm wide CHP = x.2 = mm wide CHP = 4.72 x.2 = mm meets our DHP and is the belt to use. OK as standard: W64822 static balance OK as standard: W44822 static balance Item Product Ref. Page DR Sprocket: W64822 W64822 C2 3 DR Bushing: SDS x 7/8 SDS78 A 4 DN Sprocket: W44822 W44822 C2 3 DN Bushing: SK x 2 SK2 A 5 Belt: 24822W 24822W C2 7 P686TBW /5... TB Wood s C23

100 QT Power Chain Drive Selection Speeds Other than Common otor Speeds and Speedup Applications xample: A 3 HP 75 RP NA B motor Cface mounted to a : gear reducer with an output of 75 RP is driving a dough mixer operating at 2 RP, 8 hours a day. Reducer shaft is 23/4 diameter, mixer shaft is 2, approximate center distance is 45. Procedure Step #: Calculate the Design Horsepower DHP = DriveR HP x service factor (page C2 ) Step #2: Choose the Belt Pitch Belt Pitch Selection Guide (page C2 ) Step #3: Check NA recommended minimum sprocket pitch diameter (page C2 2) Step #4: Calculate Speed Ratio Speed Ratio = aster RP / Slower RP Step #5: In the Drive Selection Tables corresponding to the correct belt pitch, locate the drive line with the same ratio. In the event of multiple drive lines, drives using larger diameters are usually more economical. Step #6: Note the following information from the drive line: Number teeth DriveR Number teeth DriveN Select the desired CD To the right of the RP and HP Belt Length actor Shaded above the CD Belt Length Column header above the CD Step #7: In the HP Rating Tables, following the Drive Selection Tables, locate the proper charts for the belt pitch in use. Locate the number of teeth on the smallest sprocket at the top of the chart and its speed along the left side. At the intersection of these lines will be located the Raw HP of the drive. (When considering belt width, refer to design HP calculation) Step #8: Calculate the Corrected HP for the Drive CHP = Raw HP x Belt Length actor Compare the CHP to the DHP and pick the belt width Step #9: Check the Dynamic Balance recommendations Reference Chart (page C2 9) Step #: Specify drive components Reference component dimensional page for Product Number xample Service factor dough mixer =.4 No adder necessary for 8 hours/day Adder for.4 ratio speedup = none DHP = 3 HP x.4 sf = 42 3 HP and 2 RP indicates the use of 4 pitch Does not apply Driver not a NA motor Driver shaft Reducer Speed ratio = 2 RP / 75 RP =.4 Drive lines 43 and 44 are both.4 ratio. Using the guideline of larger diameter being more economical, use line 44. rom Line 44 Number teeth DriveR = 64 Number teeth DriveN = 56 CD = Belt length factor =.5 Belt length = 35 Smallest sprocket 56 tooth astest RP 2 Step # Design HP = mm wide Raw HP = mm wide Raw HP = mm wide CHP = x.5 = mm meets our DHP and is the belt to use. OK as standard: W56465 static balance OK as standard: W64465 static balance Item Product Ref. Page DR Sprocket: W64465 W64465 C2 5 DR Bushing: x 23/4 234 A 5 DN Sprocket: W56465 W56465 C2 5 DN Bushing: x 2 2 A 5 Belt: 35465W 35465W C2 7 Drives using TO sprockets with a nonstock number of teeth follow the same procedure as above. Some interpolation of HP ratings may be necessary. Belt length and center distance can be calculated with the formula on page C2 2. C24 TB Wood s P686TBW /5

101 Notes P686TBW /5... TB Wood s C25

102 QT Power Chain Synchronous 8 Drive Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C26 TB Wood s P686TBW /5

103 QT Power Chain Synchronous 8 CNTR DISTANC Drive Selection Tables BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C27

104 QT Power Chain Synchronous 8 Drive Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN Horsepower Horsepower DN DN RP RP Teeth PD (in) Teeth PD (in) ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C28 TB Wood s P686TBW /5

105 CNTR DISTANC QT Power Chain Synchronous 8 Drive Selection Tables BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C29

106 QT Power Chain Synchronous 8 Drive Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN Horsepower Horsepower DN DN RP RP Teeth PD (in) Teeth PD (in) ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating >.8.8 C22 TB Wood s P686TBW /5

107 QT Power Chain Synchronous 8 CNTR DISTANC BLT LNGTH Length Correction actor Drive Selection Tables Line P686TBW /5... TB Wood s C22

108 QT Power Chain Synchronous 8 Drive Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN Horsepower Horsepower DN DN RP RP Teeth PD (in) Teeth PD (in) ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C222 TB Wood s P686TBW /5

109 QT Power Chain Synchronous 8 CNTR DISTANC Drive Selection Tables BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C223

110 QT Power Chain Synchronous 4 Drive Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C224 TB Wood s P686TBW /5

111 QT Power Chain Synchronous 4 Drive Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C225

112 QT Power Chain Synchronous 4 Drive Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C226 TB Wood s P686TBW /5

113 QT Power Chain Synchronous 4 Drive Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C227

114 QT Power Chain Synchronous 4 Drive Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C228 TB Wood s P686TBW /5

115 QT Power Chain Synchronous 4 Drive Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C229

116 QT Power Chain Synchronous 4 Drive Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C23 TB Wood s P686TBW /5

117 QT Power Chain Synchronous 4 Drive Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C23

118 QT Power Chain Synchronous 4 Drive Selection Tables Line Drive Ratio Sprocket Combination 6 RP DriveR 75 RP DriveR DRIVR DRIVN DN Horsepower DN Horsepower Teeth PD (in) Teeth PD (in) RP RP ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > ultiply Horsepower Listed by Length Correction actor to ind Horsepower Rating > C232 TB Wood s P686TBW /5

119 QT Power Chain Synchronous 4 Drive Selection Tables CNTR DISTANC BLT LNGTH Length Correction actor Line P686TBW /5... TB Wood s C233

120 QT Power Chain Horsepower Ratings 8 2 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. No Teeth PD (in.) Smallest Sprocket RP WID Smallest Sprocket RP C234 TB Wood s P686TBW /5

121 QT Power Chain Horsepower Ratings 8 35 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. No Teeth PD (in.) Smallest Sprocket RP WID Smallest Sprocket RP P686TBW /5... TB Wood s C235

122 QT Power Chain Horsepower Ratings 4 2 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. No Teeth PD (in.) Smallest Sprocket RP WID Smallest Sprocket RP C236 TB Wood s P686TBW /5

123 QT Power Chain Horsepower Ratings 4 65 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. No Teeth PD (in.) Smallest Sprocket RP WID Smallest Sprocket RP P686TBW /5... TB Wood s C237

124 QT Power Chain Horsepower Ratings 4 2 WID The following tables represent the horsepower ratings for each belt at the predetermined of Teeth, Pitch Diameters and RPs. These ratings must be multiplied by the applicable belt length factor to obtain corrected HP rating. No Teeth PD (in.) Smallest Sprocket RP C238 TB Wood s P686TBW /5

125 Timing Sprockets & Belts C3 reedom from high tension No lubrication required Compact design P686TBW /5... TB Wood s C3

126 Timing Belt Drives eatures Timing Belt Drives take their place in industry as a highly efficient, jobproved medium for mechanical power transmission. This drive combines the advantages of the chain and gear with advantages of the belt, but without the limitations usually associated with these drives. Timing Belt Drives make possible important savings in weight, space and construction without the sacrifice of efficiency. They are adaptable to almost any kind of power transmission drive. Timing Belt Drives are being used by virtually every industry. They have been adopted as standard equipment by a wide variety of machine builders and equipment manufacturers. positive slipproof... Positive grip of belt teeth with sprocket grooves eliminates slippage, speed variation. There s no initial stretch, no elongation to require belt takeup. no lubrication... Absence of metaltometal contact eliminates the need for lubricating systems, oilretaining devices and their nuisance, cost, weight, and possibility of product contamination. wide capacity range... The load capacities of synchronous belt drives range from subfractional horsepower to 6 hp and up. freedom from high tension... Since the synchronous belt drive does not rely on friction, there is no need for high tension. Thus, overhung bearing loads are reduced to a minimum. constant angular velocity... Speed is transmitted uniformly. There is no chordal rise and fall of pitch line as with roller chain, no belt creep or slippage thus no chatter or vibration. minimum backlash... Because of advanced design, backlash between the teeth and the stock belts and the grooves of stock sprockets is reduced to a negligible minimum. high efficiency... Three factors inherent elimination of friction, lack of high tension, and the belt s thin construction contribute to the drive s unusually high mechanical efficiency. light weight... The horsepowertoweight ratio is high an important consideration where weight is a critical factor, as on portable equipment. economical operation... By comparison with other systems, a synchronous belt drive generally is the least costly. The cost of the drive itself is the only expense. Synchronous belt drives do not require motor bases, lubrication systems or tensioning devices. aintenance costs are minimal. compact design... Small sprockets, short centers, narrow belts, high capacity all these inherent features can be combined to reduce space requirements. Three Timing Belt Drives on a Niles Boring Lathe C32 TB Wood s P686TBW /5

127 Timing Sprocket XL Dimensions The Timing Sprockets listed below are all carried in stock with a minimum plain bore only but can be rebored to any size within the bore range. Type PB In the type column, the first letter indicates the type sketch, the figure describes the construction ( Solid, no web; 2 Web) and the letter indicates the sprocket has flanges. O. D. I. D. L H Type PB PRODUCT NUBR NUBR O GROOVS PITCH DIA. O.D. DINSIONS, IN. BOR RANG WT. TYP Lbs. Sprocket lange L H in. ax.* App. Sprockets stocked in 3/8 inch (XL37) width only for belts /4 inch (XL25) 3/8 inch (XL37) wide ace Width () = 9/6 XL PB /4 3/6 7/6 3/6 /4.3 XL PB /4 3/6 3/6 5/6.3 2XL PB /4 3/6 3/6 5/6.6 4XL PB /4 3/6 9/6 /4 3/8.6 5XL PB /4 3/6 5/8 /4 7/6.9 6XL PB /4 3/6 /6 /4.9 8XL PB /4 3/6 3/6 /4 9/6.3 2XL PB 5/6 7/8 5/6 /4 /6.9 2XL PB 5/6 7/8 /4 3/4.9 22XL PB 5/6 7/8 /4 3/ XL PB /32 29/32 /6 /4 3/ XL PB /32 29/32 3/6 /4 5/6.34 3XL PB /32 29/32 5/6 5/6.4 32XL PB 7/6 5/6 3/ XL PB 7/6 5/6 3/6.3 4XL PB 7/6 5/6 3/6.3 42XL PB 7/6 5/6 3/6.3 44XL PB 7/6 5/6 3/6.3 48XL PB 7/6 5/6 3/6.38 6XL PB2 7/6 3/8 3/ XL PB2 7/6 3/8 3/6.5 Boredtosuit construction, minimum plain bore with 2 setscrews. *aximum bore without keyseat. P686TBW /5... TB Wood s C33

128 Timing Sprocket L Dimensions The Timing Sprockets listed below and on the following pages are all stock sizes. The dimensions given are with the SureGrip bushings in place. The figure following the type sketch letter in the type column indicates the construction: ( Solid, 2 Web, 3 Arms), and the letter indicates the sprocket has flanges. Type C Type D Type Type PB O. D. I. D. O. D. I. D. O. D. I. D. L L L L O. D. I. D. H K K Type C Type D Type Type PB BoredToSuit PRODUCT NUBR NUBR O GROOVS PITCH DIA. O.D. DINSIONS, INCHS BOR RANG I.D. BUSH. TYP Sprocket lange L K H in. ax. or belts inch wide 3/8inch pitch (L5) ace Width () = 3/4 L * PB /4 3/6 3/8*.2 2L * PB /4 3/8* /6.4 4L * PB /4 /8 3/8* 3/4.5 6L * PB /4 7/6 *.8 7L * PB /4 7/6 *.9 8L JA 7/32 5/32 /4.7 9L * PB /4 /6 * 3/6. 2L JA 7/32 5/32 /4.9 2L * PB /4 2 * 5/6.3 22L JA D 5/32 7/32 /4. 24L SH D 9/6 /4 /6 5/8.4 26L SH D 9/6 /4 /6 5/8.6 26L * PB /4 2/4 * 5/ L SH D 9/6 /4 /6 5/8.9 3L SDS D 5/8 5/6 /6 5/ L SDS D 5/8 5/6 /6 5/ L SDS D 5/8 5/6 /6 5/6 3. 4L SDS D 5/8 5/6 /6 5/ L SDS D 5/8 5/6 /6 5/ L SDS D 5/8 5/6 /6 5/6 5. 6L SD C2 7/8 3/6 3/6 + /4 5/ L SD C3 7/8 3/6 3/6 + /4 5/ L SD C3 7/8 3/6 3/6 + /4 5/ L SD C3 7/8 3/6 3/6 + /4 5/6.7 2L SD C3 7/8 3/6 3/6 + /4 5/6 3.6 * Boredtosuit construction, minimum plain bore, no setscrews. Weights for all SureGrip bushed items are approximate and include the bushing. Refer to page C 8 for balancing standards. WT. C34 TB Wood s P686TBW /5

129 PRODUCT NUBR NUBR O GROOVS PITCH DIA. Timing Sprocket L Dimensions O.D. DINSIONS, INCHS BOR RANG I.D. BUSH. TYP Sprocket lange L K H in. ax. or belts 3/4 inch wide 3/8inch pitch (L75) ace Width () = 2L * PB 3/8* /6.5 4L * PB /8 3/8* 3/4.6 6L * PB 7/6 *.9 7L * PB 7/6 *. 8L JA 5/32 5/32 /4.8 9L * PB /6 * 3/6.3 2L JA 5/32 5/32 /4. 2L * PB 2 5/6.5 22L JA 5/32 5/32 /4.2 24L SH D 9/6 /4 5/6 5/8.6 26L SH D 9/6 /4 5/6 5/8.8 28L SH D 9/6 /4 5/6 5/8 2. 3L SDS D 5/8 5/6 5/6 5/ L SDS D 5/8 5/6 5/6 5/ L SDS D 3/8 5/6 /6 /4 5/ L SDS D 3/8 5/6 /6 /4 5/ L SDS D 3/8 5/6 /6 /4 5/ L SDS D 3/8 5/6 /6 /4 5/ L SD C2 3/4 3/6 /6 + /8 5/ L SD C3 3/4 3/6 /6 + /8 5/ L SD C3 3/4 3/6 /6 + /8 5/ L SD C3 3/4 3/6 /6 + /8 5/6.7 2L SD C3 3/4 3/6 /6 + /8 5/6 5.6 or belts inch wide 3/8inch pitch (L) ace Width () = /4 4L * PB 3/4 /8 3/8* 3/4.8 6L * PB 3/4 7/6 *. 7L * PB 3/4 7/6 *.2 8L JA 23/32 5/32 /4. 9L * PB 3/4 /6 * 3/6.6 2L JA 23/32 5/32 /4.3 2L * PB 3/4 2 5/8* 5/6.8 22L JA 23/32 5/32 /4.3 24L SH D 9/6 /4 9/6 5/8.8 26L SH D 9/6 /4 9/6 5/ L SH D 9/6 /4 9/6 5/ L SDS D 5/8 5/6 9/6 5/ L SDS D 5/8 5/6 9/6 5/ L SDS D /8 5/6 /6 5/ L SDS D /8 5/6 /6 5/ L SDS D /8 5/6 /6 5/ L SDS D /8 5/6 /6 5/6 6. 6L SD D2 5/8 3/6 5/ L SD D3 5/8 3/6 5/ L SD D3 5/8 3/6 5/6.7 96L SD D3 5/8 3/6 5/ L SD D3 5/8 3/6 5/6 6. * Boredtosuit construction, minimum plain bore, no setscrews. Weights for all SureGrip bushed items are approximate and include the bushing. Refer to page C 8 for balancing standards. WT. P686TBW /5... TB Wood s C35

130 Timing Sprocket H Dimensions The Timing Sprockets listed below and on the following pages are all stock sizes. The dimensions given are with the SureGrip bushings in place. The figure following the type sketch letter in the type column indicates the construction: ( Solid, 2 Web, 3 Arms), and the letter indicates the sprocket has flanges. Type C Type D Type Type PB O. D. I. D. O. D. I. D. O. D. I. D. L L L L O. D. I. D. H K K PRODUCT NUBR Type C NUBR O GROOVS PITCH DIA. O.D. DINSIONS, INCHS BOR RANG I.D. BUSH. TYP Sprocket lange L K H in. ax. or belts inch wide inch pitch (H) also use for 3/4inch (H75) belts ace Width () = 5/6 56 H = 3/8 4H * PB 9/6 7/8 5/8 5/8* /8.4 4H JA 25/32 5/32 /4. 6H JA 25/32 5/32 /4.2 8H SH 5/8 /4 9/6 /6.8 9H * PB /6 2 23/8 5/8* 9/6 3. 2H * PB 3/6 2/8 2 5/8* 5/ H SH 5/8 /4 9/6 / H SH 5/8 /4 9/6 / H SDS 5/8 5/6 5/ H SDS 5/8 5/6 5/ H SDS 5/8 5/6 5/ H SDS 5/8 5/6 5/ H SDS D /6 5/6 /6 9/ H SDS D /6 5/6 /6 9/ H SDS D /6 5/6 /6 9/ H SDS D /8 5/6 / H SD D 5/8 3/6 / H SD D 5/8 3/6 / H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/8. 4H SK D 23/32 7/8 5/32 25/8.4 4H SK D 23/32 7/8 5/32 25/8.2 42H SK D 23/32 7/8 5/32 25/8.8 43H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/ H SK D 23/32 7/8 5/32 25/ H S C3 /6 2 25/ H S C3 /6 2 25/ H S C3 /6 2 25/ H S C3 /6 2 25/ H S C3 /6 2 25/ H S C3 /6 2 /6 25/ * Boredtosuit construction, minimum plain bore, no setscrews. Weights for all SureGrip bushed items are approximate and include the bushing. Refer to page C 8 for balancing standards. Type D Type Type PB (BoredToSuit) C36 TB Wood s P686TBW /5 WT.

131 PRODUCT NUBR NUBR O GROOVS PITCH DIA. Timing Sprocket H O.D. DINSIONS, INCHS BOR RANG I.D. BUSH. TYP Sprocket lange L K H in. ax. or belts inch wide inch pitch (H5) ace Width () = 3/6 56 H5 = 7/8 Dimensions 4H JA 9/32 5/32 /4.3 6H JA 9/32 5/32 /4.4 8H SH /8 /4 9/6.2 5/ H * PB /6 2 23/8 3/4* 9/ H SH /8 /4 9/6... 5/ H * PB 3/6 25/8 25/8 3/4* / H SD 5/8 3/6 5/8 5/ H SD 5/8 3/6 5/8 5/ H SD D /8 3/6 /8 5/ H SD D /8 3/6 /8 5/ H SD D /8 3/6 /8 5/ H SK D 5/32 7/8 3/32 9/ H SK D 5/32 7/8 3/32 9/ H SK D 5/32 7/8 3/32 9/ H SK D 5/32 7/8 3/32 9/ H SK D2 5/32 7/8 3/32 9/ H S D3 7/6 2 /4 /4 23/ H S D3 7/6 2 /4 /4 23/ H S D3 7/6 2 /4 /4 23/ H S D3 7/6 2 /4 /4 23/ H S D3 7/6 2 /4 /4 23/ H S D3 3/8 2 /4 5/6 23/ or belts 2 inch wide inch pitch (H2) ace Width () = 2/32 56 H2 = 2 4H JA 3/6 5/32 /4.7 6H JA 3/6 5/32 /4.7 8H SH 2/32 /4 9/6 5/ H * PB /6 3/32 23/8 3/4* 9/ H SH 2/32 /4 9/6 5/8 3. 2H * PB 3/6 35/32 25/8 * / H SD 5/32 3/6 5/8 5/ H SD 5/32 3/6 5/8 5/ H SD 3/6 7/32 5/8 5/ H SD 3/6 7/32 5/8 5/ H SD D /6 3/6 9/32 9/6 5/ H SK D /32 7/8 /6 / H SK D 7/32 7/8 / H SK D 7/32 7/8 /6 / H SK D 7/32 7/8 / H S D /8 2 5/32 9/6 23/4 8. 6H S D3 3/6 2 7/32 23/ H S D3 3/6 2 7/32 23/ H S D3 3/6 2 7/32 23/ H D3 3/32 25/8 /8 7/8 37/ H D3 3/32 25/8 /8 7/8 37/ H D3 9/32 25/8 5/32 5/8 7/8 37/ or belts 3 inch wide inch pitch (H3) ace Width () = 33/8 56 H3 = 3 6H * PB /6 4/6 7/8 3/4* /4 4. 8H * PB /6 4/6 2/4 3/4* 3/ H * PB /6 4/6 23/8 3/4* 5/ H * PB 3/6 43/6 2 3/4* 7/8 7. 2H * PB 3/6 43/ /8 * / H SD 23/6 3/6 5/8 5/ H SD 23/6 3/6 5/8 5/ H SD 3/6 9/6 5/8 5/ H SD 3/6 9/6 5/8 5/ H SD 7/6 3/6 /8 /6 5/ H SK /32 7/8 5/32 / H SK /32 7/8 5/32 / H SK /32 7/8 5/32 / H SK 9/32 7/8 7/ H S 5/6 2 /6 23/4 2. 6H S A2 5/6 2 /6 23/ H S A3 5/6 2 /6 23/ H S A3 5/6 2 /6 23/ H D3 5/32 25/8 29/32 3/4 7/8 37/ H D3 5/32 25/8 29/32 3/4 7/8 37/ H D3 5/32 25/8 /32 3/4 7/8 37/ * Boredtosuit construction, minimum plain bore, no setscrews. Weights for all SureGrip bushed items are approximate and include the bushing. Refer to page C 8 for balancing standards. WT. P686TBW /5... TB Wood s C37

132 Timing Sprocket XH Dimensions The Timing Sprockets listed below and on the following pages are all stock sizes. The dimensions given are with the SureGrip bushings in place. The figure following the type sketch letter in the type column indicates the construction: ( Solid, 2 Web, 3 Arms), and the letter indicates the sprocket has flanges. Type B Type A Type Type C C Type Type D D Type Type PB O. D. I. D. O. D. I. D. L L O. D. I. D. O. D. I. D. O. D. I. D. O. D. I. D. O. D. O. D. I. D. I. D. L L L L L L L L O. O. D. D. I. D. I. D. K H O. D. K Type B K Type A K K Type C Type C K K Type D Type D Type Type Type PB BoredToSuit Type PB (BoredToSuit) PRODUCT NUBR NUBR O GROOVS PITCH DIA. O.D. DINSIONS, INCHS BOR RANG I.D. BUSH. TYP Sprocket lange L K H in. ax. WT. or belts 2 inch wide 7/8inch pitch (XH2) ace Width () = 29/6 8XH SK 3/32 7/8 23/ XH SK D /6 7/8 3/4 2/ XH SK D /6 7/8 3/4 2/ XH S D /32 2 9/32 2/32 23/ XH S D /32 2 9/32 2/32 23/ XH D 7/6 25/8 3/8 5/32 7/8 37/ XH D 7/6 25/8 3/8 5/32 7/8 37/ XH D 7/6 25/8 3/8 5/32 7/8 37/ XH D2 7/6 25/8 3/8 5/32 7/8 37/ XH C2 /32 35/8 /32 /32 35/ XH C2 /32 35/8 /32 /32 35/ XH C3 /32 35/8 /32 /32 35/ XH C3 /32 35/8 /32 /32 35/ XH C3 /32 35/8 /32 /32 33/ XH C3 /32 35/8 /32 /32 33/ XH C3 /32 35/8 /32 /32 33/6 8.3 Weights for all SureGrip bushed items are approximate and include the bushing. Refer to page C 8 for balancing standards. C38 TB Wood s P686TBW /5

133 Type B Timing Sprocket XH Dimensions The Timing Sprockets listed below and on the following pages are all stock sizes. The dimensions given are with the SureGrip bushings in place. The figure following the type sketch letter in the type column indicates the construction: ( Solid, 2 Web, 3 Arms), and the letter indicates the sprocket has flanges. Type Type B A Type CType C Type Type D D Type Type Type PB I. D. O. D. I. D. O. D. I. D. L L O. D. I. D. O. D. I. D. O. D. I. D. O. D. I. D. O. D. I. O. D. D. L L L L L L L L I. D. O. D. O. D. I. D. I. D. K H O. D. O. D. I. D. I. D. K K K Type Type B A Type B K K Type C Type C K K Type D Type D Type Type Type PB BoredToSuit Type PB (BoredToSuit) PRODUCT NUBR NUBR O GROOVS PITCH DIA. or belts 3 inch wide 7/8inch pitch (XH3) ace Width () = 35/8 O.D. DINSIONS, INCHS BOR RANG I.D. BUSH. TYP Sprocket lange L K H in. ax. 8XH SK 25/32 7/8 23/ XH SK 5/32 7/8 9/32 3/ XH SK 5/32 7/8 9/32 3/ XH S 2 /8 3/6 23/ XH S 2 /8 3/6 23/4 2.7 WT. 28XH /32 25/8 29/32 7/8 37/ XH /32 25/8 29/32 7/8 37/ XH /32 25/8 29/32 7/8 37/ XH A2 3/32 25/8 29/32 7/8 37/ XH D2 35/8 9/6 35/ XH D2 35/8 9/6 35/ XH D3 35/8 9/6 35/ XH J D3 /32 4 5/32 7/32 7/6 47/ XH J D3 /32 4 5/32 7/32 7/6 47/ XH J D3 /32 4 5/32 7/32 7/6 47/ XH J D3 /32 4 5/32 7/32 7/6 47/ or belts 4 inch wide 7/8inch pitch (XH4) ace Width () = 4/6 8XH * PB 7/ /6 2/ XH SK 5/32 7/8 2/32 3/ XH SK 5/32 7/8 2/32 3/ XH S 2 23/6 3/6 23/ XH S 2 23/6 3/6 23/ XH /8 25/8 7/6 7/32 7/8 37/ XH /8 25/8 7/6 7/32 7/8 37/ XH /8 25/8 7/6 7/32 7/8 37/ XH A2 5/8 25/8 7/6 7/32 7/8 37/ XH A2 /32 35/8 /32 3/32 35/ XH J D2 4 /6 3/4 7/6 47/ XH J D3 4 /6 3/4 7/6 47/ XH J D3 4 /6 3/4 7/6 47/ XH J D3 4 /6 3/4 7/6 47/ XH J D3 4 /6 3/4 7/6 47/ XH J D3 4 /6 3/4 7/6 47/6 8.4 Weights for all SureGrip bushed items are approximate and include the bushing. * Bored to suit construction, minimum plain bore, no setscrews Refer to page C 8 for balancing standards. P686TBW /5... TB Wood s C39

134 Timing Sprocket XXH Dimensions PRODUCT NUBR NUBR O GROOVS PITCH DIA. O.D. DINSIONS, INCHS BOR RANG I.D. BUSH. TYP Sprocket lange L K H in. ax. or belts 2 inch wide /4inch pitch (XXH2) ace Width () = 25/8 8XXH SK /32 7/8 25/32 / XXH SK /32 7/8 25/32 / XXH D 3/32 25/8 3/32 7/8 37/ XXH D 3/32 25/8 3/32 7/8 37/ XXH D2 3/32 25/8 3/32 7/8 37/6 42. WT. 3XXH C2 35/8 /6 35/ XXH C2 35/8 /6 35/ XXH C3 35/8 /6 35/ XXH J C3 7/32 4 /32 +9/32 7/6 47/ XXH J C3 7/32 4 /32 +9/32 7/6 47/ XXH J C3 7/32 4 /32 +9/32 7/6 47/ XXH J C3 7/32 4 /32 +9/32 7/6 47/ or belts 3 inch wide /4inch pitch (XXH3) ace Width () = 3/6 8XXH S /6 2 3/8 23/ XXH S /6 2 3/8 23/ XXH /8 25/8 5/6 /32 7/8 37/ XXH /8 25/8 5/6 /32 7/8 37/ XXH A2 /8 25/8 5/6 /32 7/8 37/ XXH D2 5/32 35/8 7/32 9/32 35/ XXH D2 5/32 35/8 7/32 9/32 35/ XXH D3 5/32 35/8 7/32 9/32 35/ XXH J D3 4 3/6 /4 7/6 47/ XXH J D3 4 3/6 /4 7/6 47/ XXH J D3 4 3/6 /4 7/6 47/ XXH J D3 4 3/6 /4 7/6 47/ or belts 4 inch wide /4inch pitch (XXH4) ace Width () = 43/4 8XXH S /6 2 2/6 3/8 23/ XXH S /6 2 2/6 3/8 23/ XXH /32 25/8 5/32 9/6 7/8 37/ XXH /32 25/8 5/32 9/6 7/8 37/ XXH /6 35/8 /6 /8 35/ XXH A2 /6 35/8 /6 /8 35/ XXH J D2 5/ /32 25/32 7/6 47/ XXH J D3 5/ /32 25/32 7/6 47/ XXH J D3 5/ /32 25/32 7/6 47/ XXH C3 /6 63/4 5/6 +7/ XXH C3 /6 63/4 5/6 +7/ XXH C3 /6 63/4 5/6 +7/ or belts 5 inch wide /4inch pitch (XXH5) ace Width () = 53/6 8XXH * PB /4 5 2/6 5 /4* 3/ XXH * PB /4 5 2/6 5 /4* 3/ XXH /6 25/8 2 23/32 7/8 37/ XXH /32 35/8 9/32 2/32 35/ XXH /32 35/8 9/32 2/32 35/ XXH J /6 4 /4 5/6 7/6 47/ XXH J A2 /6 4 /4 5/6 7/6 47/ XXH J A3 /6 4 /4 5/6 7/6 47/ XXH D3 5/32 63/4 7/32 5/ XXH D3 5/32 63/4 7/32 5/ XXH D3 5/32 63/4 7/32 5/ XXH D3 5/32 63/4 7/32 5/ * Boredtosuit construction, minimum plain bore, no setscrews. Weights for all SureGrip bushed items are approximate and include the bushing. Refer to page C 8 for balancing standards. C3 TB Wood s P686TBW /5

135 Timing Belt Construction Timing belt drives are built on a revolutionary toothgrip principle. The molded teeth of the belt are designed to make positive engagement with the mating axial grooves on the pulleys. These teeth enter and leave the grooves in a smooth, rolling manner with negligible friction; they function in much the same manner as the teeth on a gear. The tooth profile is the result of years of engineering research and development. Timing belts, unlike most other types of belts, do not derive their great tensile strength from their thickness. Instead, these belts are built extremely thin with teeth; yet they are all muscle with tension members that give them inherent power to grip and to pull. In many respects both the engineering and the nomenclature of these timing belts parallel those of chain and gear drives. The relationship between a synchronous belt and its matching grooved pulley is similar to that between an internal ring gear and its pinion. The construction of the timing belt is not complex. It consists of only four components.. The Tension ember Continuous, helically wound fiberglass cords the pulling or loadcarrying element, the very heart of the belt. This tension member is the secret of the belt s enormous tensile strength, its excellent flex life, its high resistance to elongation. 2. The Neoprene Backing The durable, flexible backing that encases the loadcarrying tension member. ade of strong, wearresisting neoprene, bonded to the tension member and built thin. It protects the cords from grime, oil, moisture also from frictional wear if power is transmitted from back of belt. It is highly resistant to action of machine oils (but not to vegetable and watersoluble coolant oils). or severe oil conditions, belts can be made of special oilresisting compounds. 3. The Neoprene Teeth olded integral with the neoprene backing that protects the fiberglass cords. ade of a shear resistant, moderately hard neoprene compound. These teeth to assure correct engagement with the pulley grooves are precisely formed and accurately spaced. They are so located that the tooth root line lies substantially on the pitch line; thus the tooth spacing (circular pitch) of the belt is not altered by flexing. The belt tooth strength actually exceeds the tensile strength when 6 or more teeth are in mesh. 4. The Nylon acing The tough, wearresistant fabric that covers the belt s wearing surfaces. ade of tough nylon duck with low coefficient of friction, this facing protects the tooth surfaces in much the same way that casehardening protects the wearing surfaces of steel. This facing, after long service, becomes highly polished; it normally outlasts the other components of the belt. P686TBW /5... TB Wood s C3

136 Timing Belts Dimensions XL (/5inch Pitch) L (3/8inch Pitch) Product Pitch Length of Teeth Wt./Width (lbs) XL XL XL XL XL XL. 5.. XL XL XL XL XL XL XL XL XL XL XL XL XL XL Product Pitch Length of Teeth Wt./Width (lbs) XL XL XL XL XL XL XL XL XL XL XL XL XL XL XL XL XL XL XL XL XL H (inch Pitch) Product Pitch Length of Teeth Wt./Width (lbs) L L L L L L L L L L L L L L L L L L L L L L L L L L Product Pitch Length of Teeth Wt./Width (lbs) H H H H H H H H H H H H H H H H H H H H H H H H H Product Pitch Length of Teeth Wt./Width (lbs) H H H H H H H H H H H H H H H H H H H H Note: or complete product number, add width to belt length given in Product column. xamples: 5XL25 or 3XL37. C32 TB Wood s P686TBW /5

137 Timing Belts Dimensions Product Pitch Length XH (7/8inch Pitch) of Teeth Wt./Width (lbs) XH XH XH XH XH XH XH XH XH XH XH XH Product Pitch Length XXH (/4inch Pitch) of Teeth Wt./Width (lbs) XXH XXH XXH XXH XXH XXH XXH XXH Note: or complete product number, add width to belt length given in Product column. xamples: 7XH3 or 2XXH2. STOCK BLT TOLRANCS LNGTH TOLRANCS on center distance* Belt Length, Inches Tolerance 5 to ±.8 over to 5 ±.9 over 5 to 2 ±. over 2 to 3 ±.2 over 3 to 4 ±.3 over 4 to 5 ±.5 over 5 to 6 ±.6 over 6 to 7 ±.7 over 7 add. for each. increase in belt length Belt Width, Inches WIDTH TOLRANCS for in. pitch belts and under** Belt Length, Inches to to 66 Over 66 /8 to 7/6 + /64 /32 + /64 /32 over 7/6 to + /32 /32 + /32 3/64 + /32 3/64 over to 2 + /32 3/64 + 3/64 3/64 + 3/64 /6 over 2 to 2 + 3/64 3/64 + 3/64 /6 + /6 /6 over 2 to 3 + 3/64 /6 + /6 /6 + /6 /6 over 3 to 4 + /6 /6 + /6 5/64 + 5/64 5/64 over 4 + 3/32 3/32 + 3/32 7/64 + 3/32 /8 ** or other pitch belts up to and including 4 inches wide tolerance = ± 3/6 in. or belts over 4 inches wide tolerance = +3/6 /4. * These tolerances are for reference only. or fixed center drive applications, consult the factory. Tolerances on special belts on application. P686TBW /5... TB Wood s C33

138 Twin Power Twin Power Timing Belts have fully molded and jacketed teeth on both sides. Twin Power Timing Belts can transmit % of their maximum rated load from either side of the belt or in any combination where the sum of loading exerted on both sides does not exceed the maximum rating of the belt. Prior to the development of fullymolded construction, conventional timing belts were manufactured with extra rubber on the backside of the belts. This extra rubber was then ground to provide the tooth profile on the second side of the belt. The disadvantage of this method was that the ground tooth could only transmit 35% of the load of a conventional molded tooth. urther disadvantages were that it is virtually impossible to adhere nylon fabric to the ground tooth surface to retard wear and reduce friction. The advent of fullymolded construction has eliminated these load capacity and wear problems. While Twin Power Timing Belts provide unique solutions to difficult design problems, their construction similarities to conventional timing belts allow essentially the same design parameters. TWIN POWR SPCIICATION The prefix TP precedes the standard code to differentiate Twin Power from regular onesided timing belts. or example, a 26 long, /5 pitch, 3/8 wide Twin Power Timing Belt is specified: TP26XL37. NYLON ACING NOPRN RUBBR BODY IBRX TNSION BR TWIN POWR CONSTRUCTION Twin Power Timing Belts have the identical basic components as our standard timing belts, namely: Tension ember ibrex (fiberglass) cords, helically wound, provide the same loadcarrying elements as in the standard timing belt. Neoprene Body Standard Neoprene compound provides tooth material and support for fibrex cords. Nylon acing Specially treated nylon fabric adhered through patented process provides tough wearresistant tooth surface with minimal friction. TWIN POWR HORSPOWR RATINGS Twin Power Timing Belts are rated at the same horsepower capacity as a standard timing belt of identical pitch and width. aximum rated load can be transmitted by either side of the belt or in any combination where the sum of loads on both sides does not exceed the maximum rating. or example, a Twin Power Belt rated as 2 HP could be utilized with 5% of the maximum rating exerted on one side and 5% on the other. TWIN POWR SIZS AVAILABL XL (/5inch Pitch) Pitch Length Codes TP4XL TP9XL TP24XL TP3XL TP5XL TP2XL TP25XL TP3XL Standard Width Codes TP6XL TP2XL TP26XL TP33XL /4 25 TP7XL TP22XL TP28XL 3/8 37 TP8XL TP23XL TP29XL L (3/8inch Pitch) Pitch Length Codes TP2L TP285L TP39L TP54L Standard Width Codes TP225L TP3L TP42L TP6L 5 TP24L TP322L TP45L TP66L 3/4 75 TP255L TP345L TP48L TP27L TP367L TP5L H (inch Pitch) Pitch Length Codes Standard Width Codes TP36H TP5H TP66H TP9H 3/4 75 TP39H TP54H TP7H TPH TP42H TP57H TP75H TPH 5 TP45H TP6H TP8H 2 2 TP48H TP63H TP85H 3 3 C34 TB Wood s P686TBW /5

139 Special There are many special Timing belts in use today. These special belts are necessary for one reason or another. The belt may be of special pitch, length, and/or construction. When replacement belts are required, complete information on the original belts must be given. A typical special belt number would be 98 x 3V8N2. This information is necessary at all times when requesting price or when ordering belts. The omission of any section of this number makes it impossible to furnish. The mold for making Special Timing Belts is normally 5 inches wide and will make a slab this wide which will then be cut into the desired widths. Special belts must always be purchased in the minimum and multiple quantities as shown in the table below. Nominal Belt Width, Inches INIU AND ULTIPL QUANTITIS PR ORDR BASD ON 5 OLD ADTOORDR belts must be ordered in minimum quantities. Consult factory for minimum quantity. of Belts Nominal Belt Width, Inches of Belts Nominal Belt Width Inches of Belts Nominal Belt Width, Inches of Belts Nominal Belt Width, Inches /8 6 3/ /8 6 7/ /32 9 7/6 33 5/ /6 8 5/ / / / /4 6 9/6 26 /4 23/ /32 5 5/8 23 3/ /6 48 / / / /4 2 5/ /8 4 3/6 7 3/4 8 33/4 3 xample: or ADTOORDR belts 2 inches wide, the minimum quantity is 7 belts. inimum quantity for belts 3 inches wide is 4 belts. inimum quantity for inch wide belts is 29 belts. Orders must also specify the exact number of belts desired by the customer. This exact number may differ from the minimum quantity required on the order. Possible rejects can reduce the total number furnished. of Belts xample: NOT: Customer requires 5 ADTOORDR belts 2 inches wide. inimum quantity order is for 7 belts. However, due to factory reject of belt, customers will be shipped 6 belts. New molds may be 3 wide. Consult factory for information. INIU AND AXIU BLT WIDTHS AND LNGTHS Belt XL /5 in. L 3/8 in. Belt Length, Inches Under 3 3 to 6 6 to 8 8 to 6 6 to 8 inimum 3/6 /4 /4 Width, Inches aximum H in. 2 to 8 4 XH 7/8 in. 5 to XXH /4 in. 7 to SPCIAL CONSTRUCTION Static Dissipating Resistivity of 6 megohms or less Low Temperature or dry operating temperature range of 65. to +8. ( 54 C. to + 82 C.) High Temperature or dry operating temperature range of 4. to +23. (Stock belt temperature range: 3. to +85.) ( 4 C. to + C.) Oil Resistant or excessive oil atmosphere, including immersion in commercial motor oil; temperature range of 2. to +24. in oil. (Dry: 2. to +2.) ( 29 C. to +99 C.) Nonarking or conveyors, food handling, etc. Light grey neoprene 5 to 6 shore durometer. Ground Backing Special applications involving vibration or outside idlers. Class I ±.5 Class II ±.. xtra Backing Rubber Thickness or functional and special applications. P686TBW /5... TB Wood s C35

140 Cotton Cleaner Drives Greatly Increases Output The positive action of Wood s Cotton Cleaner Drives maintains accurate driven speeds... delivers full power to the cylinder train... minimizes chokeups... provides much greater output than conventional Vbelt drives. olded, nylonfaced, neoprene teeth engage grooved, gearlike pulleys, completely eliminating slippage. No Belt Stretch, No Idlers Wood s Cotton Cleaner Drive belts have amazing strength, are reinforced with continuous, helically wound steel cables. There is no stretch... no need for idlers or retensioning to take up belt slack. Thin, readily flexible construction eliminates heat buildup, maintains high operating efficiency. These belts are unaffected by dirt, oil or grease. They have been proved in thousands of applications. Longer Life, Less aintenance Because Wood s Cotton Cleaner Drives do not rely upon friction, there is no need for high drive tension. Bearing and drive life are lengthened considerably through elimination of this constant, destructive load. There is no metaltometal contact... no need for lubrication or maintenance. Belt throwoff is eliminated. And, these drives are almost entirely selfcleaning. Save Substantially in belt replacement time. Gearlike construction and absence of high tension enable you to remove belts from inside or outside pulleys, simply and easily, without spreader or pulloff tools. asy to Install Wood s Cotton Cleaner Drives are easy to install and remove. You can install them in less than half the time required for conventional Vbelt types. No special tools are required. No costly equipment changes are necessary. No Inventory Problems One pulley size is used for all cotton cleaner cylinder drives. Pulleys are statically balanced and supplied bored to size or to accommodate SureGrip, tapered, QDtype interchangeable bushings. Belts are available in sizes for 4/4, 6, 7 and 7inch fixed centers. Wood s Cotton Cleaner Drives consist of two pulleys, one belt and, when indicated, two bushings. When ordering, please specify whether bushed or boredtosize, shaft size and whether drive is to be used on 4/4, 6, 7 or 7inch center. No spreader or pulloff tools are needed to replace belts. C36 TB Wood s P686TBW /5

141 Cotton Cleaner Drives SPROCKTS L K AC DIATR OVRALL DIATR Product Number Grooves ace Diameter O.A. Diameter DINSIONS Type Bushing K L WT. 2CCP /6 Bushed SK /6 5/6 5/8 7/8.5 3CCP Bushed SK /6 5/6 5/8 7/ CCP /6 Bushed SK /6 5/6 5/8 7/ CCP /8 Bushed SK /6 5/6 5/8 7/ BLTS Product Number DINSIONS Pitch Length (in.) Center Distance (in.) 6CCB CCB * 63CCB ** 64CCB ** 65CCB ** *When used with 32groove sprockets. **When used with 3groove sprockets. NOT: The 32groove pulleys must be used with the 6CCB42 belt and are not interchangeable with other size sprockets and belts. P686TBW /5... TB Wood s C37

142 Notes C38 TB Wood s P686TBW /5

143 General ngineering Information CS Drive Installation & Alignment Sprocket Diameter Calculation aterials Use of langed Sprockets ixed Centers Drives Teeth In esh Belt Pull & Bearing Loads Idler Use Troubleshooting Guide Below are some terms and abbreviations used on the following pages. HP = Horsepower Ac = Arc Correction actor DHP = Design Horsepower Lc = Length Correction actor RP = Revolutions Per inute C = Center Distance D = Large Diameter Wheel d = Small Diameter Wheel P686TBW /5... TB Wood s CS

144 Synchronous Belt Installation Align Sprockets Sprocket alignment and parallelism of the shafts is very important. Proper alignment helps to equalize the load across the entire belt width, thereby reducing wear and extending belt life. The sketches below show how to align a Synchronous drive properly. PLAC A STRAIGHTDG against the outside edge of the sprockets as shown in igure 6; igure 7 shows the four points where the straightedge should touch the sprockets. igure 6 igure 7 The straightedge should cross the sprockets at the widest possible part. (See igure 8.) OR US A STRING. Tie a string around either shaft (igure 9) and pull it around and across the outer edge of both sprockets. igure shows how the string should touch four points when the drive is properly aligned. After aligning the sprockets, check the rigidity of the supporting framework. Shafts should be well supported to prevent distortion and a resulting change in the center distance under load. Do not use springloaded or weighted idlers. Idler sprockets or pulleys must be locked into position after adjusting belt tension. Please note: At least one sprocket must have a flange. NOT HR HR igure 8 igure igure 9 Install Belt Do not pry or otherwise force the belt onto the sprockets, as this can result in permanent damage to the belt. ither remove the sprocket s outside flange or reduce the center distance between the sprockets so that the belt can be easily installed. Belt Tensioning General ethod This method of tensioning Synchronous belts should satisfy most drive requirements. Step. Reduce the center distance so that the belt can be placed onto the sprockets without forcing or prying it over the flanges. Step 2. Increase the belt tension until the belt feels snug or taut. Avoid overtensioning the belt. Step 3. Start the drive and apply the most severe load condition. This may be either the motor starting torque or during the work cycle. A belt that is too loose will jump teeth under the most severe load condition. When this occurs, gradually increase the belt tension until satisfactory operation is achieved. Belt Tensioning orce Deflection ethod A numerical method can be used to properly tension the belt on a Synchronous drive. This procedure, commonly referred to as the orce Deflection ethod, consists of measuring the pounds of force required to deflect the belt a given amount. Step. Install the belt as per Steps and 2 of the General ethod. easure the span length (in inches) as illustrated in igure. Step 2. rom igure determine the deflection height required for the drive. The deflection height is always /64 per inch of span length. or example, a 32 span length requires a deflection of 32/64 or. To measure the deflection height place a straightedge from sprocket to sprocket on top of the belt or wrap a string or steel tape around the sprockets on top of the belt. This will serve as a reference line to measure deflection inches. Step 3. Using the formula at right, calculate the minimum and maximum force values (lbs.). Step 4. Using a spring scale, apply a perpendicular force to the belt at the midpoint of the span as illustrated in igure. NOT: or belts wider than 2 inches, it is suggested that a rigid piece of keystock or something similar be placed across the belt between the point of force and the belt to prevent belt distortion. Compare this deflection force value to that found in Step 3. Adjust belt tension accordingly. Actual belt installation tension required depends on peak loads, system rigidity, teeth in mesh, etc. In some instances it may be necessary to gradually increase the belt tension to achieve proper operation of the drive. Belt Span aximum orce = inimum orce = igure 4 x DHP RP x Pitch Diameter 5 x BHP RP x Pitch Diameter DHP = Belt Horsepower or otor Horsepower x Recommended Service actor BHP = Brake Horsepower or otor Horsepower RP = Speed of astest Shaft orce Deflection Pitch Diameter = Diameter of Smallest Sprocket CS2 TB Wood s P686TBW /5

145 Sprocket Diameter Calculations To determine the diameter of TO sprockets with a number of teeth other than those listed in our stock offering. Outside Diameter (mm) 5 RPP Plus = (.595 x NGR).4 Outside Diameter (mm) 8 RPP Plus = ( x NGR).372 Outside Diameter (mm) 4 RPP Plus = ( x NGR) Outside Diameter (mm) 2 RPP Plus = ( x NGR) 4.32 Outside Diameter (mm) 8 QT Powerchain = ( x NGR).2427 Outside Diameter (mm) 4 QT Powerchain = (4.454 x NGR) NGR = Number of Grooves To convert (mm) to Inches multiply by.3937 aterials Cast Iron aximum P = 65 Ductile Iron aximum P =, langed Sprockets Due to the tracking characteristics, even on the best aligned drives, all synchronous belts have a tendency to move axially and will ride off the edge of the sprockets. In order to keep the belt on the sprocket, side flanges are needed. On all synchronous drives the following conditions should be considered when selecting flanged sprockets.. Two Sprocket Drives: One sprocket must have flanges on both sides or both sprockets must have one flange but on opposite sides. 2. Long Center Drives: When the center distance is greater than or equal to eight times the small sprocket diameter, both sprockets should be flanged. 3. Vertical Shaft Drives: One sprocket should be flanged on both sides, all other sprockets in the drive system should have one flange on the bottom side. 4. ultiple Sprocket Drives: very other sprocket should be flanged on both sides, one flange on each sprocket on alternating sides around the entire system. ost smaller stock sprockets are flanged (8 tooth and smaller) P686TBW /5... TB Wood s CS3

146 ngineering Data ixed Centers (No Adjustment) True fixed center applications are those where no provision for adjustment of driver or driven shaft exist. ixed centers are not recommended for any synchronous belt drive other than motion transfer (low or no torque) drives. ixed center drives imply need for exact tolerances. Although length tolerances for synchronous belts are considerably less than those for other belts, no belt can be manufactured without some tolerance. Sprocket manufacturing tolerances also contribute to the fixed center drive problem. ixed center applications prevent proper belt installation and tensioning procedures, reduced belt performance can result. The use of an idler can solve the problems associated with fixed center drives. See the page in this section concerning the use of idlers. Teeth In esh or a synchronous drive to transmit the full capacity of the belt, it is necessary to have a minimum of 6 teeth in mesh on the driver and all driven wheels in the drive. The twowheel drives selected from our preengineered selection area of our catalog meet this requirement. or drives having less than 6 teeth in mesh, the horsepower of the drive should be multiplied by the proper correction factor. Teeth in esh Correction actor BLT PULL The drive designer is often asked by the machine designer for the necessary information to calculate bearing loads. The portion of the bearing load induced by the belt drive is a combination of the sprocket weights and the belt pull. The weights can be found in the dimensional tables for the sprockets. To calculate the approximate belt pull, you will need the following:. P of the Drive 2. Design Horsepower P = Pitch Diameter x RP x.262 (Driver horsepower X Service factor) 3. ffective Pull = (Design HP x 33) / P in. Belt Pull =.5 x ffective Belt Pull ax. Belt Pull = 2.25 x ffective Belt Pull CS4 TB Wood s P686TBW /5

147 ngineering Data Bearing Load Calculations In order to find actual bearing loads, it is necessary to know weights of machine components and the value of all other forces contributing to the load. However, it is sometimes desired to know the bearing load contributed by the belt drive alone. You can find bearing load due to the drive if you know your bearing spacing with respect to the sheave center, and the belt pull as calculated above. To do this use the following formulas: A. OVRHUNG SPROCKT a b Load at B, pounds = Belt Pull x (a + b) a Load at A, pounds = Belt Pull x where: a and b = spacing, inches, per drawing at right b a Shaft Bearing Bearing Belt Load Load Pull A B OVRHUNG SPROCKT Sprocket B. SPROCKT BTWN BARINGS Load at D, pounds = Belt Pull x c (c + d) c d Sprocket Load at C, pounds = Belt Pull x d (c + d) Shaft where: c and d = spacing, inches, per drawing at right Bearing Belt Bearing Load Pull Load C D SPROCKT BTWN BARINGS P686TBW /5... TB Wood s CS5

148 ngineering Data Use Of Idlers Synchronous & Timing Drives Idlers are occasionally used in the design of synchronous belt drives for various reasons:. To provide take up for fixed center drives. 2. To clear obstructions. 3. To subdue belt whip on long center drives. NOT: Do not use spring loaded or weighted idlers on synchronous drives. Idlers should be avoided where possible because they either reduce the horsepower rating or shorten belt life. Idlers may be placed either outside or inside the drive. A common serious fault in designing drives is the use of idlers, which are too small. The use of such idlers introduces severe reverse ending stresses in the belt, resulting in drastically reduced belt life. OUTSID IDLRS An outside idler increases the number of teeth in mesh, but the amount of take up, in the case of take up idlers, will be limited by the belt on the opposite side of the drive. Outside idlers are always flat because they contact the top of the belt. Idlers should be located, if at all possible, on the slack side of the drive. A flat idler pulley, outside, should be located as close as possible to the preceding sprockets. This is because belts move back and forth slightly on a flat pulley and locating it as far away from the next sprocket minimizes the possibility of the belt entering that sprocket in a misaligned condition. Outside flat idlers should be one third larger than the smallest loaded synchronous sprocket. It should be remembered that the smallest loaded synchronous sprocket should not be smaller than the minimum pitch diameter recommended. INSID IDLRS An inside idler decreases the number of teeth in mesh on the adjacent sprockets. Inside idlers are usually synchronous sprockets. An inside idler sprocket may be located at any point along the span, preferably so that it gives nearly equal arcs of contact on the two adjacent sprockets. Inside idlers should be at least as large in diameter as the smallest loaded synchronous sprocket. lat idlers may be used on the inside of a synchronous belt drive if the diameter of the flat pulley is as large as a sprocket which has 4 grooves or more. SRVIC ACTOR If the necessary recommendations are followed, it is possible to design satisfactory Synchronous drives using idlers. However, idlers always impose an additional bending stress on the belt. This reduces the belt horsepower rating. This is reflected by an addition (.2 for each idler) to the service factor when designing. If the horsepower ratings are not reduced to account for the use of an idler, belt life will be reduced. The rating of a drive or its life expectancy is drastically reduced when idlers below the minimum recommended diameter are used. The bending stress induced in the belt becomes greater as the idler diameter becomes smaller. CNTR DISTANCS UST B IXD AND RIGID d DR ixed centers T (Tight Side) Idler 4 d 3 (or greater) Typical Outside lat Idler Arrangement ixed centers T (Tight Side) T 2 (Slack Side) D DN IDLR OUNTING ounting brackets for idlers should be sturdily constructed and meticulously aligned. It is frequently found that drive problems described as belt stretch, belt instability, short belt life, belt roughness, belt vibration, and many others are traceable to flimsy idler brackets, bearings, etc. the idler mounting must be designed to be capable of withstanding forces imposed by the operating belt tensions. d DR d Idler greater T 2 (Slack Side) Typical Inside Idler Arrangement D CS6 TB Wood s P686TBW /5

149 Troubleshooting Synchronous Drives Type of ailure Cause of ailure Corrective Action excessive edge wear (exposed tensile member) jacket wear on pressureface side of belt tooth misalignment or nonrigid centers belt flange excessive overload and/or excessive belt tightness check alignment and/or reinforce mounting straighten flange reduce installation tension and/or increase drive loadcarrying capacity excessive jacket wear between excessive installation tension reduce installation tension belt teeth (exposed tension members) cracks in neoprene backing softening of neoprene backing excessive pulley tooth wear (on pressureface and/or OD) exposure to excessive low temp (below 3 ) exposure to excessive heat (+ 2 ) and/or oil excessive overload and/or excessive belt tightness insufficient hardness of pulley material eliminate low temperature condition or consult factory for proper belt construction eliminate high temperature and oil condition or consult factory for proper belt construction reduce installation tension and/or increase drive loadcarrying capacity surfaceharden pulley or use harder material unmounting of flange incorrect flange installation reinstall flange correctly misalignment correct alignment excessive drive noise * misalignment correct alignment excessive installation tension excessive load subminimum pulley diameter reduce tension increase drive loadcarrying capacity increase pulley diameters tooth shear less than 6 teeth in mesh (TI) increase TI or use next smaller pitch apparent belt stretch cracks or premature wear at belt tooth root excessive load reduction of center distance or nonrigid mounting improper pulley groove top radius increase drive loadcarrying capacity retension drive and/or reinforce mounting regroove or install new pulleys tensile break excessive load increase loadcarrying capacity of drive subminimum pulley diameter increase pulley diameters *NOT: ffective noise reduction for power transmission drives can be accomplished by incorporating a flexible noise absorbing material with the protective guard. The guard design must allow a cooling air passage on the top and bottom to prevent overheating the drive. P686TBW /5... TB Wood s CS7

150 Notes CS8 TB Wood s P686TBW /5

151 The Power Of One, The Strength Of any. OTHR PRODUCT SOLUTIONS RO ALTRA INDUSTRIAL OTION Our comprehensive product offerings include various types of clutches and brakes, overrunning clutches, engineered bearing assemblies, gearing and gear motors along with linear products, belted drives, couplings and limit switches. With thousands of product solutions available, Altra provides true single source convenience while meeting specific customer requirements. any major Os and end users prefer Altra products as their choice for performance and reliability. LCTRIC CLUTCHS AND BRAKS Inertia Dynamics atrix Stromag Warner lectric HAVY DUTY CLUTCHS AND BRAKS Industrial Clutch Stromag Svendborg Brakes Twifl ex Limited Wichita Clutch OVRRUNNING CLUTCHS ormsprag Clutch arland Clutch Stieber Clutch NGINRD COUPLINGS AND UNIVRSAL JOINTS Ameridrives Bibby Turbofl ex Guardian Couplings Huco Lamifl ex Couplings Stromag TB Wood s GAR DRIVS Bauer Gear otor Boston Gear Delroyd Worm Gear Nuttall Gear GAR OTORS Bauer Gear otor POWR TRANSISSION COPONNTS LINAR ACTUATORS AND CONTROLS Warner Linear NGINRD BARING ASSBLIS Kilian AIR OTORS Huco BLTD DRIVS AND SHAVS TB Wood s GARD CA LIIT SWITCHS Stromag