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.