Adjustable-Length Precision Double U-Joints
Lengthen and shorten these telescoping U-joints to fit your application. They’re a good choice when you need accurate and repeatable motion because they have zero backlash (no play), so there’s no motion lost when your shafts change direction. This keeps machines running smoothly. As double U-joints, they connect and transfer torque between two shafts that are either parallel to each other or are misaligned at an angle. They also keep parallel shafts moving in sync by making the output shaft move at the same rate as the input shaft. With ball bearings, there’s less friction than pin-and-block joints, so they run at higher speeds. Made of stainless steel, they balance strength without sacrificing corrosion resistance.
Since they come lubricated, you won’t need to lubricate them during installation. Drill holes through the U-joint and your shafts and then connect using spring pins.
Your shafts’ misalignment will affect the speed and torque the U-joint will be able to transmit. The more the shafts are misaligned, the less speed and torque the U-joint will be able to transmit.
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, rpm | Max. Torque, in.-lbs. | 5° Operating Angle | 10° Operating Angle | Parallel Misalignment Capability | Joint Type | Adjustment Movement | Each | |
303 Stainless Steel  | |||||||||||||
| 1/4" | 3/8" | 3/8" | 2 3/4"-3" | 30° | 4,000 | 16 | 14.4 in.-lbs. @ 1,500 rpm | 12.8 in.-lbs. @ 1,500 rpm | 0.7" | Ball Bearing | Telescoping | 00000000 | 0000000 |
Precision Double U-Joints
Since these U-joints have zero backlash (no play), there’s no motion lost when your shafts change direction, so machines move smoothly with more accurate, repeatable motion. As double U-joints, they connect and transfer torque between two shafts that are either parallel to each other or are misaligned at an angle. They also keep parallel shafts moving in sync by making the output shaft move at the same rate as the input shaft. And because their ball bearings operate with less friction than pin-and-block joints, they run at higher speeds. Made of stainless steel, these U-joints balance strength with good corrosion resistance.
They come lubricated, so you won’t need to lubricate them during installation. Connect them to shafts using the included set screws. Unlike U-joints that use spring pins, there’s no drilling required.
Your shafts’ misalignment will affect the speed and torque the U-joint will be able to transmit. The more the shafts are misaligned, the less speed and torque the U-joint will be able to transmit.
For technical drawings and 3-D models, click on a part number.
For Shaft | Torque | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Dp. | Joint Dia. | O'all Lg. | OD | Max. Operating Angle | Max. Speed, rpm | Max. Torque, in.-lbs. | 5° Operating Angle | 10° Operating Angle | Parallel Misalignment Capability | Joint Type | Each | |
303 Stainless Steel | |||||||||||||
| 1/4" | 1/2" | 3/8" | 2 1/2" | __ | 30° | 4,000 | 16 | 14.4 in.-lbs. @ 1,500 rpm | 12.8 in.-lbs. @ 1,500 rpm | 0.45" | Ball Bearing | 00000000 | 0000000 |
| 3/8" | 3/8" | 3/4" | 2 7/8" | 1 3/8" | 20° | 2,000 | 30 | 24.9 in.-lbs. @ 1,000 rpm | 19.9 in.-lbs. @ 1,000 rpm | 0.4" | Ball Bearing | 0000000 | 000000 |
| 1/2" | 7/8" | 1" | 3 7/8" | 1 7/8" | 20° | 2,000 | 75 | 62.5 in.-lbs. @ 1,000 rpm | 49.9 in.-lbs. @ 1,000 rpm | 0.5" | Ball Bearing | 0000000 | 000000 |
| 5/8" | 7/8" | 1" | 3 7/8" | 1 7/8" | 20° | 2,000 | 75 | 62.5 in.-lbs. @ 1,000 rpm | 49.9 in.-lbs. @ 1,000 rpm | 0.5" | Ball Bearing | 0000000 | 000000 |
| 3/4" | 7/8" | 1" | 3 7/8" | 1 7/8" | 20° | 2,000 | 75 | 62.5 in.-lbs. @ 1,000 rpm | 49.9 in.-lbs. @ 1,000 rpm | 0.5" | Ball Bearing | 0000000 | 000000 |
| 1" | 1 1/2" | 1 1/2" | 6 3/4" | 2 1/2" | 10° | 1,500 | 600 | 468.7 in.-lbs. @ 750 rpm | 374.9 in.-lbs. @ 750 rpm | 0.75" | Ball Bearing | 0000000 | 00000000 |
Double U-Joints
Connect and transfer torque between two shafts that are either parallel to each other or are misaligned at an angle. When shafts are parallel, these double U-joints keep them moving in sync by making the output shaft move at the same rate as the input shaft. They have a pin-and-block joint, so they handle higher torque at lower speeds than other joint types, making them a good choice for most applications. Made of steel, they are strong and withstand a good amount of torque.
To extend their life by keeping lubricant in and contaminants out, use the grooves on their body to add a cover (sometimes called bellows or boots). Drill holes through the U-joint and your shafts and then connect using spring pins.
Your shafts’ misalignment will affect the speed and torque the U-joint will be able to transmit. The more the shafts are misaligned, the less speed and torque the U-joint will be able to transmit.
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 | Parallel Misalignment Capability | Joint Type | Each | |
Steel | ||||||||||||
| 1/4" | 5/8" | 1/2" | 4" | 25° | 1,750 | 375 | 150 in.-lbs. @ 300 rpm | 51 in.-lbs. @ 300 rpm | 0.845" | Pin and Block | 0000000 | 0000000 |
| 5/16" | 11/16" | 5/8" | 4 1/2" | 25° | 1,750 | 540 | 245 in.-lbs. @ 300 rpm | 83 in.-lbs. @ 300 rpm | 0.951" | Pin and Block | 0000000 | 000000 |
| 3/8" | 7/8" | 3/4" | 5 3/8" | 25° | 1,750 | 765 | 330 in.-lbs. @ 300 rpm | 110 in.-lbs. @ 300 rpm | 1.133" | Pin and Block | 0000000 | 000000 |
| 1/2" | 1" | 1" | 6 3/4" | 25° | 1,750 | 1,560 | 595 in.-lbs. @ 300 rpm | 200 in.-lbs. @ 300 rpm | 1.428" | Pin and Block | 0000000 | 000000 |
| 5/8" | 1 1/16" | 1 1/4" | 7 1/2" | 25° | 1,750 | 5,220 | 980 in.-lbs. @ 300 rpm | 330 in.-lbs. @ 300 rpm | 1.585" | Pin and Block | 0000000 | 000000 |
| 3/4" | 1 3/16" | 1 1/2" | 8 1/2" | 25° | 1,750 | 7,920 | 1,425 in.-lbs. @ 300 rpm | 480 in.-lbs. @ 300 rpm | 1.796" | Pin and Block | 0000000 | 000000 |
Quick-Change Adjustable-Length Double U-Joints
A spring automatically lengthens or shortens these U-joints to fit your application, making them a good choice for assemblies with frequent changes. And since they connect to shafts using the included set screws, there’s no drilling required, unlike U-joints that use spring pins. As double U-joints, they connect and transfer torque between two shafts that are either parallel to each other or are misaligned at an angle. They also keep parallel shafts moving in sync by making the output shaft move at the same rate as the input shaft. With a pin-and-block joint, they handle higher torque at lower speeds than other joint types, making them a good choice for most applications. Made of steel, they’re strong and withstand a good amount of torque.
To extend their life by keeping lubricant in and contaminants out, use the grooves on their body to add a cover (sometimes called bellows or boots).
Your shafts’ misalignment will affect the speed and torque the U-joint will be able to transmit. The more the shafts are misaligned, the less speed and torque the U-joint will be able to transmit.
For technical drawings and 3-D models, click on a part number.
For Shaft | Keyway | Torque | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Dp. | Joint Dia. | O'all Lg. | Wd. | Dp. | Max. Operating Angle | Max. Speed, rpm | Max. Torque, in.-lbs. | 3° Operating Angle | 10° Operating Angle | Parallel Misalignment Capability | Joint Type | Each | |
Steel | ||||||||||||||
| 3/8" | 15/16" | 3/4" | 11 1/4"-14 1/4" | 3/32" | 3/64" | 35° | 1,000 | 600 | 335 in.-lbs. @ 300 rpm | 100 in.-lbs. @ 300 rpm | 6.63" | Pin and Block | 0000000 | 000000000 |
| 1/2" | 1 3/16" | 1" | 11 1/4"-14 1/4" | 1/8" | 1/16" | 35° | 1,000 | 1,450 | 600 in.-lbs. @ 300 rpm | 180 in.-lbs. @ 300 rpm | 6.24" | Pin and Block | 0000000 | 000000 |
| 5/8" | 1 1/4" | 1 1/4" | 13 1/2"-16 1/2" | 3/16" | 5/64" | 35° | 1,000 | 2,800 | 940 in.-lbs. @ 300 rpm | 280 in.-lbs. @ 300 rpm | 7.31" | Pin and Block | 0000000 | 00000000 |
| 3/4" | 1 3/8" | 1 1/2" | 14 3/4"-17 3/4" | 3/16" | 3/32" | 35° | 1,000 | 4,350 | 1,450 in.-lbs. @ 300 rpm | 435 in.-lbs. @ 300 rpm | 7.74" | Pin and Block | 0000000 | 00000000 |
| 1" | 1 11/16" | 2" | 17 1/2"-20 1/2" | 1/4" | 7/64" | 35° | 1,000 | 7,350 | 2,450 in.-lbs. @ 300 rpm | 735 in.-lbs. @ 300 rpm | 8.6" | Pin and Block | 0000000 | 00000000 |
Machinable-Bore Double U-Joints
Drill custom bore sizes to connect shafts that are either parallel to each other or are misaligned at an angle. These double U-joints come apart and have a small, centered hole on each end to make drilling easy. Besides transferring torque, they keep parallel shafts moving in sync by making the output shaft move at the same rate as the input shaft. They have a pin-and-block joint, so they handle higher torque at lower speeds than other joint types such as those with needle bearings, making them a good choice for most applications. Made of steel, they’re strong and handle a good amount of torque.
To extend their life by keeping lubricant in and contaminants out, use the grooves on their body to add a cover (sometimes called bellows or boots). Drill holes through the U-joint and your shafts and then connect using spring pins.
Your shafts' misalignment will affect the speed and torque the U-joint will be able to transmit. The more the shafts are misaligned, the less speed and torque the U-joint will be able to transmit.
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 | Parallel Misalignment Capability | Joint Type | Each | |
Steel | ||||||||||||
| 3/8" | 5/8" | 1/2" | 4" | 25° | 1,750 | 375 | 150 in.-lbs. @ 300 rpm | 51 in.-lbs. @ 300 rpm | 0.845" | Pin and Block | 0000000 | 0000000 |
| 1/2" | 11/16" | 5/8" | 4 1/2" | 25° | 1,750 | 540 | 245 in.-lbs. @ 300 rpm | 83 in.-lbs. @ 300 rpm | 0.951" | Pin and Block | 0000000 | 000000 |
| 5/8" | 7/8" | 3/4" | 5 3/8" | 25° | 1,750 | 765 | 330 in.-lbs. @ 300 rpm | 110 in.-lbs. @ 300 rpm | 1.133" | Pin and Block | 0000000 | 000000 |
| 3/4" | 1" | 1" | 6 3/4" | 25° | 1,750 | 1,560 | 595 in.-lbs. @ 300 rpm | 200 in.-lbs. @ 300 rpm | 1.428" | Pin and Block | 0000000 | 000000 |
| 1" | 1 1/16" | 1 1/4" | 7 1/2" | 25° | 1,750 | 5,220 | 980 in.-lbs. @ 300 rpm | 330 in.-lbs. @ 300 rpm | 1.585" | Pin and Block | 0000000 | 000000 |
| 1 1/8" | 1 3/16" | 1 1/2" | 8 1/2" | 25° | 1,750 | 7,920 | 1,425 in.-lbs. @ 300 rpm | 480 in.-lbs. @ 300 rpm | 1.796" | Pin and Block | 0000000 | 000000 |