Shaft Cross

Shaft Cross refers to a type of universal joint used in automotive and mechanical systems. It is also known as a cross joint or U-joint. A shaft cross is a crucial component that allows the transmission of rotational power between shafts that are not aligned but intersect at an angle.

The shaft cross consists of a cross-shaped mechanism with four bearing caps that hold the needle bearings in place. The bearing caps are connected to the yokes, which are attached to the shafts to be joined. The needle bearings facilitate smooth rotation and compensate for the misalignment between the shafts.

The primary function of a shaft cross is to transmit torque from one shaft to another while accommodating angular misalignment, axial movement, and slight variations in speed between the shafts. This flexibility is essential in applications where the connected shafts may not be perfectly aligned or need to move independently.

Shaft crosses are commonly used in various automotive applications, such as driveshafts, propeller shafts, and steering systems. They are also utilized in industrial machinery, agricultural equipment, and other mechanical systems where torque transmission across misaligned shafts is required.

Function
The power transmission shaft utilizes minimal space requirements, connecting the drive shaft to the driven shaft at an angle through the smoothing mechanism of the universal joint. Usually a set of 2 universal joints are installed in one shaft. During assembly, it is positioned at  the same working angle the same plane and the same phase to achieve uniform speed.