POWER-LOCKS ®
BS-F SERIES BACKSTOPS Tsubaki’s new BS-F Series backstops are designed for simple, drop-in installations to all major competitive backstop products. These backstops use a unique seal design for maximum life with minimal maintenance. With Tsubaki’s innovative design features, our backstops ensure efficient and dependable operation in the harshest environments. BS-F series backstop units are all manufactured on a made-to-order basis. When ordering, please specify bore size, keyway dimensions, overrunning rotation, and torque arm orientation. Tsubaki includes a shaft key with your BS-F backstop. If tolerances are not known, Tsubaki will produce per our standards. BS-F Series backstops are pre-lubricated with grease prior to shipping. CLUTCHES & BACKSTOPS
ENTER THE “KEYLESS” SOCIETY
Our POWER-LOCK ® solves your problems. Eliminate backlash damage to keyways from heavy loads… the Tsubaki POWER-LOCK ® fits tightly around the shaft/hub and is not affected by load reversals. End your high machining expenses for long shaft keyways, splined shafts, threads, grooves and steps… the Tsubaki POWER-LOCK ® offers exacting, slip-free location. Erase the headaches of shrink and press fits. The Tsubaki POWER-LOCK ® simplifies installation and removal. This easy-to-install unit slides into position and offers a keyless shaft-hub lock that will simultaneously handle both high torque and thrust while increasing your shaft strength. The POWER-LOCK ® is easy to assemble… you only need one tool. It is ideal for locking in large or small sprockets, gears, pulleys, timing cams and rollers. Best of all, the POWER-LOCK ® is in stock for immediate shipment. Features & Applications High Durability Against Reversing or Impacting Loads The POWER-LOCK ® connection is not affected by torsional load reversal or impact, which damages the key and keyway connection. Tsubaki POWER-LOCKS ® fit tightly around the shaft/hub and is free of backlash. Easy and Precise Positioning The POWER-LOCK ® offers 360-degree angular adjustment and is excellent for indexing tables, cam mechanisms, gear drives and double-strand conveyor sprockets. Thrust Capability The Tsubaki POWER-LOCK ® can hold axial forces, too. Typical applications with these forces include indexing tables and bevel gears. Easy Assembly and Disassembly The POWER-LOCK ® can be assembled and disassembled frequently, so maintenance or replacement of worn parts is simple and easy as compared to other methods (key and keyway, spline, shrink or press fits and welding). Increased Shaft Strength By using the POWER-LOCK ® , no metal needs to be removed from the shaft (such as the cutting of a keyway). The strength of the shaft can be kept at its original diameter. This savings can be especially noted on hollow-shaft applications.
Specifications
Torque Capacity
Inner Diameter Range (in)
Overrunning Max. RPM
Model
lb. ft.
(Nm)
BS85F BS95F BS115F BS140F BS165F BS200F BS225F BS250F BS270F BS300F BS360F BS425F BS465F
4980 6590
(6760) (8940)
4.21 - 2.52 4.21 - 2.80 5.00 - 2.80 5.00 - 2.99 5.55 - 3.58 5.91 - 4.17 10.12 - 4.65 9.72 - 5.00 10.51- 5.51 10.94 - 5.63 11.50 - 5.98 14.96 - 6.38 16.14 - 7.24
300 300 300 300 300 180 150 135 125 115 100
12000 18000 32500 45500
(16300) (24400) (44100) (61700)
75200 (102000) 108000 (147000) 141000 (192000) 254000 (345000) 360000 (489000) 542000 (735000) 722000 (980000)
85 80
Eliminates Costly Machining There is no need for time-consuming machining of keyways. The POWER-LOCK ® offers substantial savings on long, heavy shafts.
Tsubaki POWER-LOCKS ® offer a Whole New Approach to Replacing Keyways
For a complete listing of all Tsubaki POWER-LOCK ® locking devices, please download the Tsubaki POWER-LOCK ® catalog at: www.ustsubaki.com
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