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GMN Bearing USA

GMN Bearing USA

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Backstopping Clutch with Mounting Tab

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Sprag Clutch with Mounting Tab Stops Motion

backstopping clutch by GMN Bearing USA

Our RA Series backstopping clutch is a combination of our FND 400 complete unit with seals, inner ring keyway and an outer ring mounting tab. This heavy-duty clutch is good for high torque operations and ensures motion freezes in place.

Commonly referred to as a hold-back clutch, it prevents the rotation from moving in the reverse direction. Some applications that rely on an RA Series sprag clutch are:

  • Conveyors
  • Gear Reducers
  • And more

Components of the RA Series Backstopping Clutch

backstopping clutch ra series by GMN Bearing USA
side drawing of a backstopping clutch unit by GMN Bearing USA

Our RA Series backstopping sprag clutch has a keyway at the inner ring and mounting tab at the outer ring. Other key characteristics:

  • Bore diameter (ID): 15 to 40 mm
  • Outer Diameter (OD): 65 to 110 mm
  • Width: 34 mm
  • Double sealed
  • Operating temp: 212 F / 100 C
  • Oil lubricated for life
  • Manufactured with our FE 400 Z tension spring
    • On request, they can be manufactured with our FE 400 M meander spring

RA Complete Sprag Clutch Series

SlugGMN SeriesPart NoShaft
Diameter (d)
[mm]
Outer
Diameter (D)
[mm]
Width (b)
[mm]
Torque (M)
[Nm]
sc-ra-437-z-complete-freewheel-clutchRA437 Z15655161
sc-ra-442-z-complete-freewheel-clutchRA442 Z20756208
sc-ra-453-z-complete-freewheel-clutchRA453 Z25908314
sc-ra-459-z-complete-freewheel-clutchRA459 Z301008381
sc-ra-463-z-complete-freewheel-clutchRA463 Z3510010428
sc-ra-470-z-complete-freewheel-clutchRA470 Z4011012509
sc-ra-473-z-complete-freewheel-clutchRA473 Z4511014543

Torque Information

Backstops are able to transmit nominal torque mounted on solid shafts. Mounted on hollow shafts the transmittable torque decreases. In this case please contact us to receive a calculation on the transmittable torque for your application.

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GMN Bearing USA

We provide GMN precision bearings, sprag clutches and non-contact seals to OEMs, spindle rebuilders and distributors in North America.
 

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