SB Pump Backstop | Formsprag Clutch

Model SB (shaft bore) automatic pump backstopping clutches feature a high torque density and require no adjustments or controls.

Product Features

  • 7 Models Torque Range: 875 to 22,300 lb. ft.
  • Bore Range: 0.75 to 7.0 in.
  • Speed Range: 0 to 3,000 RPM
  • Temperature Range: -40 to +150ºF 
  • Special Features: Can simplify a retrofit backstopping application with less movement of equipment

Product Data Sheets


Click on image below to download pdf. To order hard copies of literature click here.

Product Catalog

Overrunning, Indexing, Backstopping Clutches

Service Manual

General Purpose Overrunning Clutches Install

Contact Info

Formsprag Clutch
23601 Hoover Rd.
Warren, MI 48089 - USA
Toll Free: 1-800-348-0881 (Press #1)
Phone: 586-758-5000
Fax: 586-758-5204