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System of Measurement
Maximum Torque
Shaft Type
Clutch Type
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DFARS Specialty Metals
Export Control Classification Number (ECCN)
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Number of Set Screws Included
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
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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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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" | Keyed | 5 | 1,800 | 1 5/8" | 1 15/16" | Steel | 1/16" × 1/32" | Slip Fit | 7/8" | 13/16" | 3/16" × 3/32" | 0000000 | 0000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/8" | Keyed | 14 | 1,800 | 2" | 2 1/8" | Steel | 3/32" × 3/64" | Slip Fit | 1 1/4" | 1" | 3/16" × 3/32" | 0000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1/2" | Keyed | 14 | 1,800 | 2" | 2 1/8" | Steel | 1/8" × 1/16" | Slip Fit | 1 1/4" | 1" | 3/16" × 3/32" | 0000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 5/8" | Keyed | 28 | 1,500 | 2 5/8" | 2 23/32" | Steel | 3/16" × 3/32" | Slip Fit | 1 3/8" | 1 5/16" | 3/16" × 3/32" | 0000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/4" | Keyed | 100 | 1,000 | 3 5/8" | 3 11/32" | Steel | 3/16" × 3/32" | Slip Fit | 2 1/4" | 1 1/2" | 3/8" × 3/16" | 0000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1" | Keyed | 100 | 1,000 | 3 5/8" | 3 11/32" | Steel | 1/4" × 1/8" | Slip Fit | 2 1/4" | 1 1/2" | 3/8" × 3/16" | 0000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/4" | Keyed | 100 | 1,000 | 3 5/8" | 3 11/32" | Steel | 1/4" × 1/8" | Slip Fit | 2 1/4" | 1 1/2" | 3/8" × 3/16" | 0000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/2" | Keyed | 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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Sprag Engagement—Keyed Hub
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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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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" | Keyed | 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 | 0000000 | 000000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3/4" | Keyed | 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 | 0000000 | 00000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1" | Keyed | 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 | 0000000 | 00000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1 1/4" | Keyed | 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 | 0000000 | 00000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
