FRB Series Backstopping Clutches | Formsprag Clutch

Excellent for use as backstops by mounting the clutch’s inner race on the rotating shaft and attaching or anchoring the clutch’s outer race with a torque arm to a stationary member of the equipment. The Model FRB can also be used in applications that require low driving speeds and high inner race overrunning speeds.

Product Features

  • Centrifugal Throughout Sprags
  • No wear, Less drag
  • Horizontal or vertical mounting
  • Design can reduce operating cost with a 3 year maintenance interval

7 Models

  • Torque Range: up to 11,000 lb. ft. (16000 Nm)
  • Bore Range: up to 4.437 in. (112.70 mm)
  • Speed Range: must be above the lift off speed
  • Temperature Range: -40 to +150º F

Product Data Sheets

  • p-956-fc_frb
Click on image below to download pdf. To order hard copies of literature click here.

Product Catalog

  • Overrunning, Indexing, Backstopping Clutches

Service Manual

  • Overrunning Clutches FRB 400 thru 1027 Installation

Related Literature

  • p-1723-4
  • Application Guide Overruning Clutches

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


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