Material Material |
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Joint Type Joint Type |
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| Pin and Block | Needle Bearing |
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| Ball and Socket | Spring |
Shaft Mount Type Shaft Mount Type |
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| Spring Pin | Set Screw |
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| Clamp On |
Overall Length Overall Length |
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Maximum Torque Maximum Torque |
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Joint Diameter Joint Diameter |
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For Shaft Depth For Shaft Depth |
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Torque Torque |
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Parallel Misalignment Capability Parallel MisalignmentCapability |
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Ball Material Ball Material |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Number of Set Screws Required Number of SetScrews Required |
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Set Screw Material Set Screw Material |
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About U-Joints (Universal Joints)
U-joints are used to connect two shafts that have a high amount of misalignment.
More
Corrosion-Resistant Single U-Joints
Made of stainless steel, these U-joints offer excellent corrosion resistance. To connect, drill a hole through the joint and shaft and insert a spring pin (not included). All have grooves for holding protective boots (not included).
For technical drawings and 3-D models, click on a part number.
For Shaft | Torque | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Dp. | Joint Dia. | Overall Lg. | Max. Operating Angle | Max. Speed, rpm | Max. Torque, in.-lbs. | 3° Operating Angle | 10° Operating Angle | Joint Type | Each | |
303 Stainless Steel | |||||||||||
| 3/8" | 7/8" | 3/4" | 2 11/16" | 25° | 1,750 | 510 | 330 in.-lbs. @ 300 rpm | 110 in.-lbs. @ 300 rpm | Pin and Block | 0000000 | 0000000 |
| 1/2" | 1" | 1" | 3 3/8" | 25° | 1,750 | 1,040 | 595 in.-lbs. @ 300 rpm | 200 in.-lbs. @ 300 rpm | Pin and Block | 0000000 | 000000 |
| 5/8" | 1 1/16" | 1 1/4" | 3 3/4" | 25° | 1,750 | 3,480 | 980 in.-lbs. @ 300 rpm | 330 in.-lbs. @ 300 rpm | Pin and Block | 0000000 | 000000 |
| 3/4" | 1 3/16" | 1 1/2" | 4 1/4" | 25° | 1,750 | 5,280 | 1,425 in.-lbs. @ 300 rpm | 480 in.-lbs. @ 300 rpm | Pin and Block | 0000000 | 000000 |
| 1" | 1 1/2" | 2" | 5 7/16" | 25° | 1,750 | 10,400 | 2,635 in.-lbs. @ 300 rpm | 885 in.-lbs. @ 300 rpm | Pin and Block | 0000000 | 000000 |
Corrosion-Resistant Mil. Spec. Machinable-Bore Single U-Joints
Made of stainless steel, these U-joints offer excellent corrosion resistance. They come apart and have a small centered starter hole on each end to make drilling easy. To connect, 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.
Torque | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Max. Shaft Dia. | For Max. Shaft Dp. | Joint Dia. | Overall Lg. | Max. Operating Angle | Max. Speed, rpm | Max. Torque, in.-lbs. | 3° Operating Angle | 10° Operating Angle | Joint Type | Includes | Specifications Met | Each | |
303 Stainless Steel | |||||||||||||
| 7/32" | 11/16" | 3/8" | 1 3/4" | 35° | 1,500 | 100 | Not Rated | Not Rated | Pin and Block | __ | MIL-U-20625A Class C | 0000000 | 0000000 |
| 9/32" | 3/4" | 1/2" | 2" | 35° | 1,500 | 375 | Not Rated | Not Rated | Pin and Block | __ | MIL-U-20625A Class C | 0000000 | 000000 |
| 3/8" | 13/16" | 5/8" | 2 1/4" | 35° | 1,500 | 610 | Not Rated | Not Rated | Pin and Block | __ | MIL-U-20625A Class C | 0000000 | 000000 |
| 7/16" | 31/32" | 3/4" | 2 11/16" | 35° | 1,500 | 1,000 | Not Rated | Not Rated | Pin and Block | __ | MIL-U-20625A Class C | 0000000 | 000000 |
| 1/2" | 1 1/32" | 7/8" | 3" | 35° | 1,500 | 1,350 | Not Rated | Not Rated | Pin and Block | __ | MIL-U-20625A Class C | 0000000 | 000000 |
| 9/16" | 1 3/16" | 1" | 3 3/8" | 35° | 1,500 | 1,900 | 365 in.-lbs. @ 300 rpm | 235 in.-lbs. @ 300 rpm | Pin and Block | Ball-Spring Oil Fitting | MIL-U-20625A Class C | 0000000 | 000000 |
| 5/8" | 1 7/32" | 1 1/8" | 3 1/2" | 35° | 1,500 | 2,200 | Not Rated | Not Rated | Pin and Block | Ball-Spring Oil Fitting | MIL-U-20625A Class C | 0000000 | 000000 |
| 3/4" | 1 1/4" | 1 1/4" | 3 3/4" | 35° | 1,500 | 3,600 | 690 in.-lbs. @ 300 rpm | 450 in.-lbs. @ 300 rpm | Pin and Block | Ball-Spring Oil Fitting | MIL-U-20625A Class C | 0000000 | 000000 |
| 7/8" | 1 5/16" | 1 1/2" | 4 1/4" | 35° | 1,500 | 7,200 | 1,385 in.-lbs. @ 300 rpm | 900 in.-lbs. @ 300 rpm | Pin and Block | Ball-Spring Oil Fitting | MIL-U-20625A Class C | 0000000 | 000000 |
| 1" | 1 9/16" | 1 3/4" | 5" | 35° | 1,500 | 10,700 | Not Rated | Not Rated | Pin and Block | Ball-Spring Oil Fitting | MIL-U-20625A Class C | 0000000 | 000000 |
| 1 3/16" | 1 5/8" | 2" | 5 7/16" | 35° | 1,500 | 15,500 | 2,980 in.-lbs. @ 300 rpm | 1,935 in.-lbs. @ 300 rpm | Pin and Block | Ball-Spring Oil Fitting | MIL-U-20625A Class C | 0000000 | 000000 |
Corrosion-Resistant Sealed Easy-Install Single U-Joints
Stainless steel hubs allow these U-joints to handle harsh environments. A boot seal keeps lubricant in and contaminants out. Connect to shafts using the keyway and included set screws—no drilling required. All have needle bearings for operating at higher speeds than other types of bearings.
For technical drawings and 3-D models, click on a part number.
For Shaft | Keyway | Torque | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Dp. | Joint Dia. | Overall Lg. | OD | Wd. | Dp. | Max. Operating Angle | Max. Speed, rpm | Max. Torque, in.-lbs. | 3° Operating Angle | 10° Operating Angle | Bellows Material | Each | |
303 Stainless Steel with Steel Bearings | ||||||||||||||
| 3/8" | 15/16" | 3/4" | 2 11/16" | 1 3/8" | 3/32" | 3/64" | 35° | 6,000 | 95 | 28 in.-lbs. @ 1,000 rpm | 19 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 0000000 |
| 1/2" | 1 3/16" | 1" | 3 3/8" | 1 1/2" | 1/8" | 1/16" | 35° | 6,000 | 215 | 110 in.-lbs. @ 1,000 rpm | 77 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 5/8" | 1 1/4" | 1 1/4" | 3 3/4" | 1 7/8" | 3/16" | 3/32" | 35° | 6,000 | 700 | 275 in.-lbs. @ 1,000 rpm | 185 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 3/4" | 1 3/8" | 1 1/2" | 4 1/4" | 2 1/4" | 3/16" | 3/32" | 35° | 6,000 | 1,780 | 545 in.-lbs. @ 1,000 rpm | 370 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 1" | 1 11/16" | 2" | 5 1/2" | 2 11/16" | 1/4" | 1/8" | 35° | 6,000 | 4,300 | 1,050 in.-lbs. @ 1,000 rpm | 705 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 10mm | 24mm | 19mm | 68mm | 35mm | 3mm | 11mm | 35° | 6,000 | 95 | 28 in.-lbs. @ 1,000 rpm | 19 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 20mm | 36mm | 38mm | 108mm | 57mm | 6mm | 23mm | 35° | 6,000 | 1,780 | 545 in.-lbs. @ 1,000 rpm | 370 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 25mm | 43mm | 51mm | 140mm | 68mm | 8mm | 28mm | 35° | 6,000 | 4,300 | 1,050 in.-lbs. @ 1,000 rpm | 705 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
Sanitary Sealed Easy-Install Single U-Joints
Connect misaligned shafts in sanitary environments such as food, cosmetic, and pharmaceutical plants. These U-joints have a highly polished surface to eliminate crevices where bacteria could grow. A heat- and water-resistant silicone boot keeps lubricant in and contaminants out, and the lubricant is NSF registered for incidental food contact. U-joints are made of 316 stainless steel, so they won’t corrode from frequent washdowns with harsh cleaners.
These U-joints connect to shafts using a keyway and included set screws. Unlike standard U-joints, there’s no drilling or spring pin required for connecting to shafts. All have needle bearings for operating at higher speeds than other types of bearings.
FDA-compliant U-joints have a boot that is approved for direct contact with food.
For technical drawings and 3-D models, click on a part number.
U-Joints | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft | Keyway | Torque | Replacement Boots | ||||||||||||
| Dia. | Dp. | Joint Dia. | Overall Lg. | OD | Wd. | Dp. | Max. Operating Angle | Max. Speed, rpm | Max. Torque, in.-lbs. | 3° Operating Angle | 10° Operating Angle | Each | Each | ||
316 Stainless Steel | |||||||||||||||
FDA-Compliant U-Joints | |||||||||||||||
| 3/8" | 15/16" | 3/4" | 2 11/16" | 1 3/8" | 3/32" | 3/64" | 35° | 6,000 | 95 | 28 in.-lbs. @ 1,000 rpm | 19 in.-lbs. @ 1,000 rpm | 0000000 | 0000000 | 0000000 | 000000 |
| 1/2" | 1 3/16" | 1" | 3 3/8" | 1 1/2" | 1/8" | 1/16" | 35° | 6,000 | 215 | 110 in.-lbs. @ 1,000 rpm | 77 in.-lbs. @ 1,000 rpm | 0000000 | 000000 | 0000000 | 00000 |
| 5/8" | 1 1/4" | 1 1/4" | 3 3/4" | 1 7/8" | 3/16" | 3/32" | 35° | 6,000 | 700 | 275 in.-lbs. @ 1,000 rpm | 185 in.-lbs. @ 1,000 rpm | 0000000 | 000000 | 0000000 | 00000 |
U-Joints | |||||||||||||||
| 3/4" | 1 3/8" | 1 1/2" | 4 1/4" | 2 1/4" | 3/16" | 3/32" | 35° | 6,000 | 1,780 | 545 in.-lbs. @ 1,000 rpm | 370 in.-lbs. @ 1,000 rpm | 0000000 | 000000 | 0000000 | 00000 |
| 1" | 1 11/16" | 2" | 5 1/2" | 2 11/16" | 1/4" | 1/8" | 35° | 6,000 | 4,300 | 1,050 in.-lbs. @ 1,000 rpm | 705 in.-lbs. @ 1,000 rpm | 0000000 | 000000 | 0000000 | 00000 |
Corrosion-Resistant High-Speed Single U-Joints
Made of stainless steel, these U-joints offer excellent corrosion resistance. Needle bearings enable them to operate at higher speeds than other types of U-joints. To connect, 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. | Overall Lg. | Max. Operating Angle | Max. Speed, rpm | Max. Torque, in.-lbs. | 3° Operating Angle | 10° Operating Angle | Each | |
303 Stainless Steel with Steel Bearings | ||||||||||
| 3/8" | 15/16" | 3/4" | 2 11/16" | 35° | 6,000 | 95 | 28 in.-lbs. @ 1,000 rpm | 19 in.-lbs. @ 1,000 rpm | 0000000 | 0000000 |
| 1/2" | 1 3/16" | 1" | 3 3/8" | 35° | 6,000 | 215 | 110 in.-lbs. @ 1,000 rpm | 77 in.-lbs. @ 1,000 rpm | 0000000 | 000000 |
| 5/8" | 1 1/4" | 1 1/4" | 3 3/4" | 35° | 6,000 | 700 | 275 in.-lbs. @ 1,000 rpm | 185 in.-lbs. @ 1,000 rpm | 0000000 | 000000 |
| 3/4" | 1 3/8" | 1 1/2" | 4 1/4" | 35° | 6,000 | 1,780 | 545 in.-lbs. @ 1,000 rpm | 370 in.-lbs. @ 1,000 rpm | 0000000 | 000000 |
| 1" | 1 11/16" | 2" | 5 1/2" | 35° | 6,000 | 4,300 | 1,050 in.-lbs. @ 1,000 rpm | 705 in.-lbs. @ 1,000 rpm | 0000000 | 000000 |
| 10mm | 24mm | 19mm | 68mm | 35° | 6,000 | 95 | 28 in.-lbs. @ 1,000 rpm | 19 in.-lbs. @ 1,000 rpm | 0000000 | 000000 |
| 12mm | 30mm | 25mm | 86mm | 35° | 6,000 | 215 | 110 in.-lbs. @ 1,000 rpm | 77 in.-lbs. @ 1,000 rpm | 0000000 | 000000 |
| 16mm | 32mm | 32mm | 95mm | 35° | 6,000 | 700 | 275 in.-lbs. @ 1,000 rpm | 185 in.-lbs. @ 1,000 rpm | 0000000 | 000000 |
| 20mm | 36mm | 38mm | 108mm | 35° | 6,000 | 1,780 | 545 in.-lbs. @ 1,000 rpm | 370 in.-lbs. @ 1,000 rpm | 0000000 | 000000 |
| 25mm | 43mm | 51mm | 140mm | 35° | 6,000 | 4,300 | 1,050 in.-lbs. @ 1,000 rpm | 705 in.-lbs. @ 1,000 rpm | 0000000 | 000000 |
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 set screw mount U-joint, tighten a set screw at each end. 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 | No. of Set Screws Required | For Set Screw Thread Size | 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 |
| 1/8" | 3/16" | 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 | 00000 |
| 3/16" | 7/16" | 9/32" | 1 3/8" | 30° | Not Rated | 4 | 3.6 in.-lbs. @ 1,500 rpm | 3.2 in.-lbs. @ 1,500 rpm | Ball and Socket | Spring Pin | __ | __ | 00000000 | 00000 |
| 1/4" | 1/2" | 3/8" | 1 3/4" | 30° | Not Rated | 16 | 14.4 in.-lbs. @ 1,500 rpm | 12.8 in.-lbs. @ 1,500 rpm | Ball and Socket | Set Screw | 2 | 6-32 | 00000000 | 00000 |
Constant-Velocity Single U-Joints
Keep shafts moving in sync with these U-joints—a flexible spring at the center stabilizes input and output speed and reduces vibration. This spring design compensates for more misalignment than the rigid connection in a standard single U-joint. However, these U-joints can’t handle as much torque. They’re often used for frequent assembly changes, since you can quickly loosen the clamping screw to move them. The nonmarring screw holds U-joints in place without damaging shafts.
These U-joints have zero backlash, meaning that the motion from the input shaft is transferred completely to the output shaft. This allows your machines to run smoothly, without delays during stops and starts. They don’t require lubrication, so they are easier to maintain than lubricated U-joints and are less likely to gather dust or debris. This makes them a good choice for use with medical equipment, optical devices, and other sensitive equipment.
U-joints with a 90° maximum operating angle can be used in place of a gearbox, which saves space and costs you less.
For Shaft | Torque | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Dp. | Joint Dia. | Overall Lg. | Max. Speed | Max. Torque, in.-lbs. | 3° Operating Angle | 10° Operating Angle | Parallel Misalignment Capability | Each | |
17-4 PH Stainless Steel | ||||||||||
30° Max. Operating Angle | ||||||||||
| 1/4" | 5/16" | 3/4" | 1 1/2" | Not Rated | 15 | Not Rated | Not Rated | 0.063" | 0000000 | 000000 |
| 3/8" | 7/16" | 1" | 2" | Not Rated | 38 | Not Rated | Not Rated | 0.094" | 0000000 | 000000 |
| 1/2" | 9/16" | 1 1/4" | 2 1/2" | Not Rated | 81 | Not Rated | Not Rated | 0.125" | 0000000 | 000000 |
90° Max. Operating Angle | ||||||||||
| 1/4" | 3/8" | 3/4" | 2 3/8" | Not Rated | 15 | Not Rated | Not Rated | 0.313" | 0000000 | 000000 |
| 3/8" | 7/16" | 1" | 2 7/8" | Not Rated | 38 | Not Rated | Not Rated | 0.375" | 0000000 | 000000 |
| 1/2" | 9/16" | 1 1/4" | 3 7/8" | Not Rated | 81 | Not Rated | Not Rated | 0.438" | 0000000 | 000000 |
Precision Double U-Joints
Allowing for zero backlash (no play), this U-joint is good for applications requiring consistent motion and precise control. Joint is corrosion-resistant stainless steel. Tighten the set screws to connect.
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 | Parallel Misalignment Capability | Joint Type | No. of Set Screws Required | For Set Screw Thread Size | Each | |
303 Stainless Steel | ||||||||||||||
| 1/4" | 1/2" | 3/8" | 2 1/2" | 30° | Not Rated | 16 | 14.4 in.-lbs. @ 1,500 rpm | 12.8 in.-lbs. @ 1,500 rpm | 0.45" | Ball and Socket | 2 | 6-32 | 00000000 | 0000000 |
Adjustable-Length Precision Double U-Joints
Adjust the length of this U-joint from 2 3/4" to 3” to fit your application. It allows for zero backlash (no play) and is good for applications requiring consistent motion and precise control. Joint is stainless steel for good corrosion resistance. To connect, 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 | Parallel Misalignment Capability | Joint Type | Each | |
303 Stainless Steel | ||||||||||||
| 1/4" | 3/8" | 3/8" | 2 3/4"-3" | 30° | Not Rated | 16 | 14.4 in.-lbs. @ 1,500 rpm | 12.8 in.-lbs. @ 1,500 rpm | 0.7" | Ball and Socket | 00000000 | 0000000 |