What is cardan joint?

A cardan joint, also known as a universal joint or U-joint, is a mechanical joint that allows for rotational movement in two planes, commonly used to connect drive shafts in vehicles and machinery. It consists of a cross-shaped metal piece with bearings at each end, connected to yokes or shafts on either side.

Cardan joints are used to transmit torque and rotation between shafts that are not in line with each other, allowing for flexibility in the system. They can accommodate angular misalignment and changes in distance between the shafts, while still maintaining a constant speed and torque transfer.

There are several types of cardan joints, including single-cardan joints, double-cardan joints, and constant-velocity joints. Each type has specific applications and advantages depending on the requirements of the system.

Overall, cardan joints are essential components in many mechanical systems, providing flexibility and smooth rotation while transmitting power between non-aligned shafts.