About Shaft Couplings
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About U-Joints (Universal Joints)
U-joints are used to connect two shafts that have a high amount of misalignment.
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Clamping Precision Flexible Shaft Couplings
Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft. Tighten the clamping screws to secure.
Spiral couplings have long cuts in their body for flexibility to handle parallel, axial, and angular misalignment better than parallel couplings. However, they’re not as rigid. Often used for light duty encoder and stepper drive applications, they allow zero backlash (no play) and never need lubrication. They’re also known as helical beam couplings.
Aluminum couplings are lightweight with good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Misalignment Capability | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Overall Lg. | OD | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Axial | For Motion Type | Each | |
Spiral Cut | ||||||||||
7075 Aluminum | ||||||||||
| 1/8" × 3/32" | 1/2" | 3/8" | 10,000 | 3 | 0.005" | 2° | 0.005" | Forward/Reverse, Start/Stop | 00000000 | 0000000 |
| 1/8" × 3/32" | 3/4" | 1/2" | 10,000 | 5 | 0.005" | 2° | 0.005" | Forward/Reverse, Start/Stop | 00000000 | 00000 |
| 5/32" × 3/32" | 3/4" | 1/2" | 10,000 | 5 | 0.005" | 2° | 0.005" | Forward/Reverse, Start/Stop | 00000000 | 00000 |
| 3/16" × 3/32" | 3/4" | 1/2" | 10,000 | 5 | 0.005" | 2° | 0.005" | Forward/Reverse, Start/Stop | 00000000 | 00000 |
| 1/4" × 3/32" | 3/4" | 3/4" | 10,000 | 20 | 0.006" | 3° | 0.006" | Forward/Reverse, Start/Stop | 00000000 | 00000 |
Set Screw Precision Flexible Shaft Couplings
Tighten the set screws to fasten these couplings to your shaft. Set screws bite into the shaft to hold the couplings in place. All are lightweight, corrosion-resistant aluminum.
Spiral couplings have long, continuous cuts in the body, making them flexible enough to handle parallel, axial, and angular misalignment. Often used for light duty encoder and stepper drive applications, they allow zero backlash (no play) and never need lubrication. They’re also known as helical beam couplings. Spiral couplings are less rigid than parallel couplings.
For technical drawings and 3-D models, click on a part number.
Misalignment Capability | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Shaft Dia. | Overall Lg. | OD | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Axial | For Motion Type | Each | |
Spiral Cut | ||||||||||
7075 Aluminum | ||||||||||
| 1/8" × 3/32" | 1/2" | 3/8" | 10,000 | 3 | 0.005" | 2° | 0.005" | Forward/Reverse, Start/Stop | 00000000 | 0000000 |
| 1/4" × 3/32" | 3/4" | 3/4" | 10,000 | 20 | 0.006" | 3° | 0.006" | Forward/Reverse, Start/Stop | 00000000 | 00000 |
Corrosion-Resistant Precision Single U-Joints
Stainless steel U-joints are more corrosion resistant than steel U-joints. They allow for zero backlash (no play) and are good for applications requiring consistent motion and precise control.
To connect spring-pin mount U-joints, drill a hole through the joint and shaft and insert a spring pin (not included).
For technical drawings and 3-D models, click on a part number.
For Shaft | Torque | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Dp. | Joint Dia. | O'all Lg. | Max. Operating Angle | Max. Speed | Max. Torque, in.-lbs. | 5° Operating Angle | 10° Operating Angle | Joint Type | Shaft Mount Type | Each | |
303 Stainless Steel | ||||||||||||
| 3/32" | 11/32" | 3/16" | 1" | 30° | Not Rated | 1 | 0.9 in.-lbs. @ 1,500 rpm | 0.8 in.-lbs. @ 1,500 rpm | Ball and Socket | Spring Pin | 00000000 | 000000 |