Axial Restraint Set Collars | Formsprag Clutch

Formsprag requires that all clutches and holdbacks be axially restrained when mounted . Our recommended bore to shaft fits are loose to facilitate installation and removal, therefore, axial restraint must be provided by set collars, shoulders, restraining keys, retaining snap rings, retainer plates, or some other axial restraint device approved by Formsprag . Holdback axial restraint is required to prevent the reaction end of the torque arm from imposing biasing loads on the bearings . Holdbacks installed without axial restraint can shift on the shaft, causing bearing loads which can significantly reduce bearing B-10 life . For customers wishing to have a tolerance gap between the axial restraining device and the holdback inner race, a maximum gap of 1/8” per side is recommended .

Product Data Sheets

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

Product Catalog

  • Overrunning, Indexing, Backstopping Clutches

Related Literature

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  • HDOCB Engineering Capabilities

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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

Axial Restraint Collars
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