What is the difference between the shaft spindle drive shaft

The difference between the shaft spindle and the drive shaft is that the working principle is different. The spindle is used to support the rotating parts and only bear the bending moment without transmitting torque; the transmission shaft is a rotating body with high speed and less support; the rotating shaft is a must used to connect the main parts of the product and is used to withstand both bending moments during rotation. The shaft that bears torque.

Some spindles rotate, such as the shafts of railway vehicles, and some spindles do not rotate, such as the shafts supporting pulleys. According to whether the shaft rotates when working, the spindle can be divided into rotating spindle and fixed spindle:

Rotating spindle: the bearing is subjected to bending moment when working, and the shaft rotates; fixed spindle: the bearing is subjected to bending moment when working, and the shaft is fixed.

According to the role of the shaft and the load it bears, it can be divided into a spindle, a rotating shaft and a transmission shaft. The central axis only bears the bending moment but does not transmit the torque; the rotating shaft bears both the bending moment and the torque; the transmission shaft only transmits the torque but does not bear the bending moment, or the bending moment is very small.

The drive shaft is a rotating body with high speed and less support, so its dynamic balance is very important. Generally, the drive shaft must undergo a dynamic balance test before leaving the factory and be adjusted on a balancing machine. For a front-engine rear-wheel drive car, the rotation of the transmission is transmitted to the shaft of the final reducer. It can be several sections, and the sections can be connected by universal joints.