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Clutch Type
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Export Control Classification Number (ECCN)
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DFARS Specialty Metals
One-Way Clutches
Roller Engagement—Knurled Hub
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Roller clutches are best for low- to medium-torque transfer in overrunning and indexing applications.
Clutches with a knurled hub can be press fit into the bore of 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.
Shaft | Hub | Clockwise Drive | Counterclockwise 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. | Each | Each | ||||
Through Shaft | ||||||||||||||||
| 1/4" | Round | 0.83 | 5,000 | 15/16" | 31/32" | Steel | — | Set Screw | 5/8" | 9/32" | 4550N41 | 0000000 | 4550N42 | 0000000 | ||
| 3/8" | Keyed | 1.25 | 5,000 | 1 3/16" | 1" | Steel | 3/32" × 3/64" | Set Screw | 9/16" | 3/8" | 4550N43 | 000000 | 4550N44 | 000000 | ||
| 1/2" | Keyed | 4.16 | 2,000 | 1 1/2" | 1 9/32" | Steel | 1/8" × 1/16" | Set Screw | 7/8" | 1/2" | 4550N45 | 000000 | 4550N46 | 000000 | ||
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 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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" | 4550N11 | 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" | 4550N12 | 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" | 4550N13 | 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" | 4550N14 | 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" | 4550N15 | 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" | 4550N16 | 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" | 4550N17 | 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" | 4550N18 | 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 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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" | 4550N32 | 000000000 | 4550N31 | 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" | 4550N34 | 00000000 | 4550N33 | 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" | 4550N36 | 00000000 | 4550N35 | 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" | 4550N38 | 00000000 | 4550N37 | 00000000 | ||
Sprag Engagement—Flush Hub
 |  |
Covers |
 |  |
Torque Arm Shown Installed | Torque Arms |
Sprag clutches handle higher torque than roller clutches because they have more contact points. This makes them best for backstopping applications.
Clutches with a flush hub have a precision ground outer race, so they can be press fit directly into a component and positioned anywhere along the length of your shaft. They also have mounting holes on their face you can use to secure your component or an anti-rotation device, such as a torque arm, for a different backstopping setup.
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.
Covers—Covers protect you from rotating equipment when the clutch is mounted to the end of the shaft.
Torque Arms—Clutch torque arms work as an anchor for clutches in backstopping applications. Mount to the outer race of your clutch and a stationary piece of equipment.
Clutches | Covers | Torque Arms | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Max. Rotation Speed, rpm | Shaft | Clockwise or 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 | Each | Each | Each | |||||
Through Shaft | |||||||||||||||||
| 3/4" | Keyed | 300 | 2,800 | 850 | 3 1/2" | 2 3/4" | Steel | 3/16" × 3/32" | Slip Fit | 4550N21 | 000000000 | 4550N201 | 0000000 | 4550N301 | 0000000 | ||
| 1" | Keyed | 1,175 | 2,500 | 800 | 4 1/4" | 3 1/2" | Steel | 1/4" × 1/8" | Slip Fit | 4550N22 | 00000000 | 4550N202 | 000000 | 4550N302 | 000000 | ||
| 1 1/4" | Keyed | 1,175 | 2,500 | 800 | 4 1/4" | 3 1/2" | Steel | 1/4" × 1/8" | Slip Fit | 4550N23 | 00000000 | 4550N202 | 000000 | 4550N302 | 000000 | ||
| 1 1/2" | Keyed | 2,250 | 2,200 | 750 | 5 3/8" | 3 3/4" | Steel | 3/8" × 3/16" | Slip Fit | 4550N24 | 00000000 | 4550N203 | 000000 | 4550N303 | 000000 | ||
| 1 3/4" | Keyed | 2,250 | 2,200 | 750 | 5 3/8" | 3 3/4" | Steel | 3/8" × 3/16" | Slip Fit | 4550N25 | 00000000 | 4550N203 | 000000 | 4550N303 | 000000 | ||
Electric One-Way Clutches
Friction Engagement
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Through Shaft—Through-shaft clutches regulate torque transmission between an input shaft and a mounted component.
Clockwise Drive | Counterclockwise Drive | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Shaft Type | Max. Torque, in·lbf | Max. Rotation Speed, rpm | OD | Overall Lg. | Electric Clutch Type | Electrical Connection Type | Shaft Mount Type | Wire Lead Lg. | Voltage, V DC | Current, amp | Each | Current, amp | Each | ||||
Through Shaft | ||||||||||||||||||
| 1/4" | Round | 30 | 1,400 | 1 1/4" | 1 1/8" | Power On | Hardwire | Spring Pin | 15" | 24 | 0.14 | 5156T41 | 000000 | 0.24 | 5156T45 | 000000 | ||
| 5/16" | Round | 30 | 1,400 | 1 1/4" | 1 1/8" | Power On | Hardwire | Spring Pin | 15" | 24 | 0.14 | 5156T42 | 00000 | 0.24 | 5156T46 | 00000 | ||
| 3/8" | Round | 75 | 1,400 | 1 3/4" | 1 1/2" | Power On | Hardwire | Spring Pin | 18" | 24 | 0.14 | 5156T43 | 000000 | 0.24 | 5156T23 | 000000 | ||
| 1/2" | Round | 75 | 1,400 | 1 3/4" | 1 1/2" | Power On | Hardwire | Spring Pin | 18" | 24 | 0.14 | 5156T44 | 000000 | 0.24 | 5156T24 | 000000 | ||
One-Way-Locking Sprockets
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Stop reverse motion in its tracks. These sprockets use a clutch to transfer torque in one direction and spin freely in the other. They're often used for backstopping, indexing, and overrunning. For example, in two-speed systems, they connect the low-speed motor to the main drive. When the high-speed motor takes over, they stop transferring power and spin in the opposite direction. All are made in the U.S.
Steel—Steel is strong, but best for dry environments since moisture will cause it to rust.
Finished Bore—Mount these sprockets onto your shaft and secure with a set screw—no machining required.
For Roller Chain | Keyway | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Trade No. | Std. | Pitch | No. of Teeth | OD | Bore Type | For Shaft Dia. | Wd. | Dp. | Each | |||
For Single Strand | ||||||||||||
Steel | ||||||||||||
| 35 | ANSI | 3/8" | 15 | 2" | Finished | 1/2" | 1/8" | 9/16" | 6498N11 | 0000000 | ||
| 35 | ANSI | 3/8" | 25 | 3 3/16" | Finished | 5/8" | 3/16" | 23/32" | 6498N12 | 000000 | ||
| 40 | ANSI | 1/2" | 12 | 2 3/16" | Finished | 1/2" | 1/8" | 9/16" | 6498N13 | 000000 | ||
| 40 | ANSI | 1/2" | 15 | 2 5/8" | Finished | 1/2" | 1/8" | 9/16" | 6498N14 | 000000 | ||
| 40 | ANSI | 1/2" | 20 | 3 7/16" | Finished | 3/4" | 3/16" | 27/32" | 6498N15 | 000000 | ||
| 50 | ANSI | 5/8" | 12 | 2 11/16" | Finished | 1/2" | 1/8" | 9/16" | 6498N16 | 000000 | ||
| 50 | ANSI | 5/8" | 15 | 3 5/16" | Finished | 3/4" | 3/16" | 27/32" | 6498N17 | 000000 | ||
| 50 | ANSI | 5/8" | 20 | 4 5/16" | Finished | 1" | 1/4" | 1 3/32" | 6498N18 | 000000 | ||
| 60 | ANSI | 3/4" | 12 | 3 1/4" | Finished | 5/8" | 3/16" | 23/32" | 6498N19 | 000000 | ||
| 60 | ANSI | 3/4" | 14 | 3 3/4" | Finished | 3/4" | 3/16" | 27/32" | 6498N21 | 000000 | ||
| 60 | ANSI | 3/4" | 18 | 4 11/16" | Finished | 1 1/4" | 1/4" | 1 3/8" | 6498N22 | 000000 | ||
