Electric One-Way Clutches
Unlike mechanical clutches, these clutches let you electrically control when torque is transmitted. They transfer torque in one direction and spin freely in the opposite direction, so they’re useful in applications where you don’t want motion to reverse such as in backstopping, indexing, and overrunning. When you remove power from these clutches, they disengage, cutting torque to your pulley, sprocket, gear, or other mounted component without stopping your drive shaft.
Clockwise Drive Direction | |||||||||||
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For Shaft Dia. | Max. Torque, in.-lbs. | Max. Speed, rpm | OD | Overall Lg. | Electric Clutch Type | Electrical Connection Type | Wire Lead Lg. | Voltage | Current | Each | |
Through Shaft | |||||||||||
1/4" | 30 | 1,400 | 1 1/4" | 1 1/8" | Power On | Hardwire | 15" | 24V DC | 0.14A | 0000000 | 000000 |
5/16" | 30 | 1,400 | 1 1/4" | 1 1/8" | Power On | Hardwire | 15" | 24V DC | 0.14A | 0000000 | 00000 |
3/8" | 75 | 1,400 | 1 3/4" | 1 1/2" | Power On | Hardwire | 18" | 24V DC | 0.14A | 0000000 | 000000 |
1/2" | 75 | 1,400 | 1 3/4" | 1 1/2" | Power On | Hardwire | 18" | 24V DC | 0.14A | 0000000 | 000000 |
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. They’re through-shaft clutches, so they regulate torque transmission between a drive shaft and a mounted component such as a pulley, sprocket, or gear.
When choosing a clutch, consider how much torque you need to transfer. Roller clutches are best for low- to medium-torque transfer in overrunning and indexing applications. Sprag clutches handle higher torque than roller clutches because they have more contact points. This makes them best for backstopping applications.
You should also consider how the clutch will attach to your mounted component. Clutches with a knurled hub can be press fit into the bore of your component. Clutches with a keyed hub let you slip on your component.
Clutches that mount to shafts with set screws bite into your shaft when tightened to hold it. 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.
For technical drawings and 3-D models, click on a part number.
Shaft | Hub | Clockwise Drive Direction | |||||||||
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For Shaft Dia. | Max. Torque, ft.-lbs. | Max. Speed, rpm | OD | Overall Lg. | Material | Keyway Wd. × Keyway Dp. | Mount Type | Dia. | Lg. | Each | |
1/4" | 0.83 | 5,000 | 15/16" | 31/32" | Steel | __ | Set Screw | 5/8" | 9/32" | 0000000 | 0000000 |
3/8" | 4.16 | 5,000 | 1 3/16" | 1" | Steel | 3/32" × 3/64" | Set Screw | 9/16" | 3/8" | 0000000 | 000000 |
1/2" | 50 | 2,000 | 1 1/2" | 1 9/32" | Steel | 1/8" × 1/16" | Set Screw | 7/8" | 1/2" | 0000000 | 000000 |
Shaft | Hub | Clockwise Drive Direction | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Max. Torque, ft.-lbs. | Max. Speed, rpm | OD | Overall Lg. | Material | Keyway Wd. × Keyway Dp. | Mount Type | Dia. | Lg. | Keyway Wd. × Keyway Dp. | Each | |
1/4" | 5 | 1,800 | 1 5/8" | 1 15/16" | Steel | 3/16" × 1/16" | Slip Fit | 7/8" | 13/16" | 3/16" × 3/32" | 0000000 | 0000000 |
3/8" | 14 | 1,800 | 2" | 2 1/8" | Steel | 3/16" × 1/16" | Slip Fit | 1 1/4" | 1" | 3/16" × 3/32" | 0000000 | 000000 |
1/2" | 14 | 1,800 | 2" | 2 1/8" | Steel | 3/16" × 1/16" | Slip Fit | 1 1/4" | 1" | 3/16" × 3/32" | 0000000 | 000000 |
5/8" | 28 | 1,500 | 2 5/8" | 2 23/32" | Steel | 3/16" × 1/16" | Slip Fit | 1 3/8" | 1 5/16" | 3/16" × 3/32" | 0000000 | 000000 |
3/4" | 100 | 1,000 | 3 5/8" | 3 11/32" | Steel | 3/8" × 3/16" | Slip Fit | 2 1/4" | 1 1/2" | 3/8" × 3/16" | 0000000 | 000000 |
1" | 100 | 1,000 | 3 5/8" | 3 11/32" | Steel | 3/8" × 3/16" | Slip Fit | 2 1/4" | 1 1/2" | 3/8" × 3/16" | 0000000 | 000000 |
1 1/4" | 100 | 1,000 | 3 5/8" | 3 11/32" | Steel | 3/8" × 3/16" | Slip Fit | 2 1/4" | 1 1/2" | 3/8" × 3/16" | 0000000 | 000000 |
1 1/2" | 200 | 800 | 4 1/2" | 4 1/2" | Steel | 3/8" × 3/16" | Slip Fit | 3" | 2 1/16" | 3/8" × 3/16" | 0000000 | 000000 |
Max. Speed, rpm | Shaft | Hub | Clockwise Drive Direction | ||||||||||
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For Shaft Dia. | Max. Torque, ft.-lbs. | Inner-Race | Outer-Race | OD | Overall Lg. | Material | Keyway Wd. × Keyway Dp. | Mount Type | Dia. | Lg. | Keyway Wd. × Keyway Dp. | Each | |
5/8" | 110 | 1,950 | 900 | 2" | 2 3/4" | Steel | 3/16" × 3/32" | Set Screw | 1 1/4" | 1" | 3/16" × 3/32" | 0000000 | 000000000 |
3/4" | 300 | 1,950 | 750 | 2.88" | 3.19" | Steel | 3/16" × 3/32" | Set Screw | 1 3/8" | 1 5/16" | 3/16" × 3/32" | 0000000 | 00000000 |
1" | 450 | 1,650 | 600 | 3 1/4" | 3.56" | Steel | 1/4" × 1/8" | Set Screw | 1 3/4" | 1 7/16" | 1/4" × 1/8" | 0000000 | 00000000 |
1 1/4" | 675 | 1,250 | 350 | 3 3/4" | 3 1/2" | Steel | 5/16" × 5/32" | Set Screw | 2 1/4" | 1 7/16" | 5/16" × 5/32" | 0000000 | 00000000 |