Formsprag Clutches

Formsprag has been designing, manufacturing and delivering dependable, long-lived, precision power transmission products for over fifty years and provides one of the broadest lines of industrial clutches in the world

Formsprag Advantageformsprag 1

Formsprag overrunning clutches deliver thoroughly proven, dependable power transmission.  Careful selection of highest quality materials, precision-manufactured by experienced craftsmen, conscientious assembly, and rigid adherence to detail guarantee a reliable, quality product.

Overrunning clutches handle torque loads up to 949200 Nm, with other sizes available by request.

  • Instantaneous action, no backlash
  • Infinitely changing wear points
  • More torque, less space
  • Full sprag complement
  • Formchrome sprags
  • “Free-action” retainer
  • PCE positive continuous engagement
  • C/T “Centrifugal throwout” sprags


Free-Action Retainer Design

The Formsprag “Free-action” sprag retainer design spaces and positions each sprag uniformly, yet allows independent action of each sprag during overrunning and while under load.

Sprags are not caged.  The “Free-action” principle allows each sprag to be energised individually.

More Information

Check out the Formsprag website or contact us for more information.