Renold Sprag clutch Holdbacks with Central Torque Arms are self contained units ready for mounting on the headshafts, or other suitable driving shafts, of inclined conveyors or elevators to prevent run back.
Features
High precision sprags create instantaneous action with ZERO BACKLASH
High quality, high precision heavy duty bearings for arduous applications
SH clutches designed for LONGLIFE and lower overall operating cost
Able to accommodate LARGE BORES (up to 20") and HIGH TORQUE CAPACITY within compact design
Dimensionally INTERCHANGEABLE one piece central torque arm design for ease of replacement against other brands
Quick disconnect mounting pins for fast torque arm removal
Enhanced labyrinth sealing for use in hostile environments
Grease or oil filled options available
Axial retaining collars available for all sizes
Renold Sprag Clutch RE-CONDITIONING SERVICE TO NEW available on all sizes
Typical Applications
Inclined belt conveyor
Bucket elevator
If reverse rotation occurs serious safety problems would be created and possible machinery failure.
To overcome the problem of drive reversal a Renold Sprag Clutch holdback is fitted to the conveyor headshaft and held with a torque arm against stops fitted to the framework of the conveyor.
Aggregates Industry
Renold SH Sprag Clutch Holdbacks are used in the aggregates industries Worldwide, often in conjunction with high quality RENOLD GEARBOXES, typically on inclined conveyors.