Phone: 800.927.3262
Fax: 586.758.5204


Formsprag Clutch
A Member of the
Altra Industrial Motion Group

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Formsprag Clutch Products

Formsprag Clutch, together with its sister company Stieber Clutch in Germany, is the world’s leading designer and manufacturer of Overrunning Clutches and Backstops for use in numerous Industrial Power Transmission applications including Conveyor & Conveying Equipment, Food Processing Machinery, Gear Reducers, Hoists & Cranes, Mining Machinery, Machine Tools, Paper Converting Machinery, Packaging Machinery, Pumping Equipment, and many other types of Specialty Machinery.

Formsprag and Stieber offer the broadest range of both Sprag and Ramp & Roller type overrunning clutches and backstops available world-wide.


Formsprag General Purpose Clutches
Formsprag Special Purpose Clutches
Backstopping Clutches

General Purpose Clutches

Special Purpose Clutches

Backstopping Clutches

Formsprag Modular Building Block Clutches
Formsprag Clutch Couplings
Formsprag Accessories

Modular “Building Block” Clutches

Clutch Couplings





Aerospace and Defense

Formsprag Clutch continues to be a leader in the development of Sprag Overrunning Clutches and Bi-Directional Clutches for use in of Aircraft and Ground-based applications. These include various functions on Fixed & Rotary Wing Aircraft and Tanks & Military Vehicles.

Aerospace & Defense







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