Protect shafts, motors, and gear boxes from damage that’s caused by torque overload from machine jams and emergency stops. If your set torque is exceeded, these couplings will disengage and then automatically re-engage once the torque is back within range. They handle more than five times as much torque as our other torque-limiting flexible shaft couplings. Connect them to your shafts with the included set screws, which bite into the shaft or shaft and key for a secure hold.

Single-spring couplings let you make finer torque adjustments than the double-spring couplings, but can only withstand half as much torque.

Double-spring couplings handle twice as much torque as the single-spring couplings, but are not the best for making precise adjustments at low torques.

Couplings for keyed shafts have keyways that are cut to standard ANSI dimensions, so they’ll fit snugly on ANSI keyed shafts to eliminate slipping during starts and stops.

For technical drawings and 3-D models, click on a part number.