Also known as Cardan or Hooke's joints, single pin-and-block U-joints have two hubs that are connected to a center block with pins at one point, forming a joint. The hubs can move at an angle to each other to accommodate angular misalignment (where shafts sit at an angle to each other) between shafts that are connected to the hubs. Pin-and-block U-joints operate at slower speeds than needle bearing U-joints but can transmit more torque.
Plain Bore with Starter Hole
These U-joints have a starting hole so you can machine a finished bore to the correct dimensions for your shaft.
For applications with standard shaft sizes, select a U-joint with a finished bore in the size that you need.