ARD Backstopping Clutch | Formsprag Clutch

Holding torque exceeding 200,000 ft.lbs.
Virtually unlimited continuous speed capability through lift-off sprags
Many units with greater than 200,000 hours of maintenance-free operation

Formsprag Clutch was instrumental in the development of the long-life Anti-Rotation Device (ARD) on the reactor coolant pumps of pressure water reactors and continues to support the installed base of ARDs by offering field inspections, factory rebuilding and new ARDs with improved bearing performance.

Product Features

Standard Formsprag ARD design features:

Lift-off sprags for no-contact running, no heat generation and long-life exceeding 10-year maintenance-free operation between recommended inspections
Dynamically balanced hydrodynamic babbitted bearings and races for minimal wear and heat generation
Accommodation for pressurized oil flow, and monitoring systems to measure temperature, pressure, and vibration to ensure performance
Balanced torque arm to positively prevent reverse rotation
100% dynamically tested at the factory
ISO 9001:2000 and AS9100 Rev. B

Other Formsprag Clutch Nuclear Power Industry applications include:

Backstops for various pumping systems
Cooling tower fan backstops
Overrunning clutches in turning gear drives

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Service Manual

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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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ARD Backstopping Clutch | Formsprag Clutch

Product Features

Standard Formsprag ARD design features:

Other Formsprag Clutch Nuclear Power Industry applications include:

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

Service Manual

Related Literature

Contact Info

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