Single U-Joints


Connect and transfer torque between two shafts that are misaligned at an angle. Your shafts’ misalignment will affect the speed and torque these U-joints will be able to transmit. The more the shafts are misaligned, the less speed and torque they’ll be able to transmit.
Pin-and-block U-joints handle higher torque at lower speeds than other joint types such as those with needle bearings, making them a good choice for most applications. 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).
Steel U-joints are strong and handle more torque than zinc U-joints.
U-joints for keyed shafts connect to shafts with set screws. Unlike U-joints that use spring pins, there’s no drilling required.
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 | Shaft Mount Type | Each | |
Pin-and-Block Joint | |||||||||||
Steel—For Keyed Shafts | |||||||||||
1 13/16" | 2 3/4" | 3" | 9 1/16" | 25° | 1,750 | 65,400 | 5,750 in.-lbs. @ 300 rpm | 1,940 in.-lbs. @ 300 rpm | Set Screw | 0000000 | 000000000 |