Formsprag Clutch Datasheets for Mechanical Clutches

Mechanical clutches are assemblies consisting of elements for the connection and disconnection of shafts (clutch) in equipment drives.
Mechanical Clutches: Learn more

Product Name Notes
All Formsprag/Stieber clutches described in this catalog are essentially “overrunning” clutches, i.e., they will drive in one direction but overrun (freewheel) in the other direction.Through the wide variety of designs...
Available in six sizes, the Formsprag RL Clutch is a sprag type no-back which permits transmission of driving torque from input to output shaft in both directions of rotation, but...
Formsprag Clutch Bi-Directional Dual Input Sprag Clutches are used in the automatic system for throttle control of aircraft jet engines to provide a manual override of the servo systems in...
Formsprag Clutch Formlock Bi-Directional Clutches are used in the drive and positioning system of tank turret guns and other mobile guns to prevent the barrels from backdriving from preset.
Formsprag Clutch Sprag Retainer Assemblies are used in the Starter drive of a Jet Turbine Engine and provide automatic disconnect of the engine upon light-up.
Formsprag Clutch offers a number of Special Design Backstop clutches, in addition to many standard offerings which can be used, where reverse rotation must be positively prevented. The availability of...
Through the wide variety of designs offered by Formsprag Clutch and Stieber Clutch in both Sprag and Ramp & Roller Designs virtually any application can be met where reciprocating motion...