McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    16 Products

    One-Way Clutches

    Since they transfer torque in one direction and spin freely in the other, these clutches are useful in applications where you don’t want motion to reverse, such as in backstopping, indexing, and overrunning. For example, they can be used to prevent a conveyor from reversing direction.
    When choosing a clutch, consider how much torque you need to transfer. You should also consider how the clutch will attach to your mounted component.
    Roller Engagement—Keyed Hub
    Image of Product. Front orientation. Clutches. One-Way Clutches, Roller Engagement—Keyed Hub.
    Roller clutches are best for low- to medium-torque transfer in overrunning and indexing applications.
    Clutches with a keyed hub let you slip on your component.
    Through Shaft—Through-shaft clutches regulate torque transmission between an input shaft and a mounted component.
    Slip-Fit Shaft Mount—Clutches that mount to shafts with a slip fit must be secured with a shaft collar or in some other way that prevents them from moving along the length of your shaft.
    Shaft
    Hub
    Clockwise Drive
    For Shaft
    Dia.
    For Shaft
    Type
    Max. Torque,
    ft·lbf
    Max. Rotation
    Speed, rpm
    OD
    Overall
    Lg.
    Material
    Keyway Wd. ×
    Keyway Dp.
    Mount
    Type
    Dia.
    Lg.
    Keyway Wd. ×
    Keyway Dp.
    Each
    Through Shaft
    1/4"Keyed51,8001 5/8"1 15/16"Steel1/16" × 1/32"Slip Fit7/8"13/16"3/16" × 3/32"00000000000000
    3/8"Keyed141,8002"2 1/8"Steel3/32" × 3/64"Slip Fit1 1/4"1"3/16" × 3/32"0000000000000
    1/2"Keyed141,8002"2 1/8"Steel1/8" × 1/16"Slip Fit1 1/4"1"3/16" × 3/32"0000000000000
    5/8"Keyed281,5002 5/8"2 23/32"Steel3/16" × 3/32"Slip Fit1 3/8"1 5/16"3/16" × 3/32"0000000000000
    3/4"Keyed1001,0003 5/8"3 11/32"Steel3/16" × 3/32"Slip Fit2 1/4"1 1/2"3/8" × 3/16"0000000000000
    1"Keyed1001,0003 5/8"3 11/32"Steel1/4" × 1/8"Slip Fit2 1/4"1 1/2"3/8" × 3/16"0000000000000
    1 1/4"Keyed1001,0003 5/8"3 11/32"Steel1/4" × 1/8"Slip Fit2 1/4"1 1/2"3/8" × 3/16"0000000000000
    1 1/2"Keyed2008004 1/2"4 1/2"Steel3/8" × 3/16"Slip Fit3"2 1/16"3/8" × 3/16"0000000000000
     
    Sprag Engagement—Keyed Hub
    Image of Product. Front orientation. Clutches. One-Way Clutches, Sprag Engagement—Keyed Hub.
    Sprag clutches handle higher torque than roller clutches because they have more contact points. This makes them best for backstopping applications.
    Clutches with a keyed hub let you slip on your component.
    Through Shaft—Through-shaft clutches regulate torque transmission between an input shaft and a mounted component.
    Set-Screw Shaft Mount—Clutches that mount to shafts with set screws bite into your shaft when tightened to hold it.
    Max. Rotation
    Speed, rpm
    Shaft
    Hub
    Clockwise Drive
    Counterclockwise
    Drive
    For Shaft
    Dia.
    For Shaft
    Type
    Max. Torque,
    ft·lbf
    Inner-Race
    Outer-Race
    OD
    Overall
    Lg.
    Material
    Keyway Wd. ×
    Keyway Dp.
    Mount
    Type
    Dia.
    Lg.
    Keyway Wd. ×
    Keyway Dp.
    Each
    Each
    Through Shaft
    5/8"Keyed1101,9509002"2 3/4"Steel3/16" × 3/32"Set Screw1 1/4"1"3/16" × 3/32"00000000000000000000000000000000
    3/4"Keyed3001,9507502.88"3.19"Steel3/16" × 3/32"Set Screw1 3/8"1 5/16"3/16" × 3/32"000000000000000000000000000000
    1"Keyed4501,6506003 1/4"3.56"Steel1/4" × 1/8"Set Screw1 3/4"1 7/16"1/4" × 1/8"000000000000000000000000000000
    1 1/4"Keyed6751,2503503 3/4"3 1/2"Steel5/16" × 5/32"Set Screw2 1/4"1 7/16"5/16" × 5/32"000000000000000000000000000000
     
    back to top