Sprag Clutch Bearings

A sprag clutch bearing is a one way freewheel clutch that turns in a single direction. This type of bearing is usually supplied already filled with grease meaning it can be used straight away and requires little maintenance or additional grease before use.

Freewheel bearings are characterised by their ability to only turn in one direction which means they can transmit torque from shaft to housing in one direction and allow free rotation in the other. Sprag type designs typically have a higher torque capacity than a similar sized ramp and roller type clutch.

RS Components have a range of sprag clutch bearings in different diameters to meet various bearing solution applications. Our sprag clutch bearings features keyways on both inner and outer races for increased torque and inner race only.

How does a sprag clutch bearing work?

The sprags are placed in a certain angled way which allows rotation in only one direction and will lock when force is applied in the opposite direction.

Typical Applications

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  • Sprag clutches are suited for automotive industries such as transition systems to change gears smoothly
  • Conveyer drives
  • Hoist load brake in the event of mechanical failure
  • Fan drives
  • Pumps
  • Printing machines

  • ...
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    Description Price Series Inside Diameter Outside Diameter Race Width Torque Over-running Speed Dynamic Load Rating Static Load Rating Keyway Drag Torque
    RS Stock No. 137-1796
    Mfr. Part No.HFL0822-L564
    BrandINA
    $53.45
    Each
    units
    - 8mm 12mm 22mm - - 3650N 3950N - -
    RS Stock No. 174-1072
    Mfr. Part No.HFL3530-L564
    BrandINA
    $105.98
    Each
    units
    HFL 35mm 42mm 30mm 121Nm 3900rpm 12200N 18800N - -
    RS Stock No. 174-1070
    Mfr. Part No.HF3520-L564
    BrandINA
    $55.32
    Each
    units
    HF 35mm 42mm 20mm 121Nm 3900rpm - - - -
    RS Stock No. 137-1800
    Mfr. Part No.HFL1626-L564
    BrandINA
    $63.20
    Each
    units
    - 16mm 22mm 26mm - - 7400N 9000N - -
    RS Stock No. 174-1068
    Mfr. Part No.HF0306-KF-L564
    BrandINA
    $27.33
    Each
    units
    HF 3mm 6.5mm 6mm 0.18Nm 8000 rpm, 45000 rpm - - - -
    RS Stock No. 174-1071
    Mfr. Part No.HFL3030-L564
    BrandINA
    $92.23
    Each
    units
    HFL 30mm 37mm 30mm 90Nm 4500rpm 11600N 16900N - -
    RS Stock No. 174-1069
    Mfr. Part No.HF3020-L564
    BrandINA
    $50.63
    Each
    units
    HF 30mm 37mm 20mm 90Nm 4500rpm - - - -