Can you briefly talk about the functions and differences of shaft sleeve, bearing bush, bushing and bearing, and what parts are commonly used?

The shaft sleeve plays a protective role to prevent the shaft from being worn, and only the shaft sleeve needs to be replaced to save the cost. Bearing bush is the contact part between sliding bearing and shaft, which plays a supporting and fixing role almost like bearing. Bushings play the role of gaskets, some of them play the role of sealing, and they are worn, so they can be easily replaced to protect parts. Bearings are parts that support the shaft. It can guide the rotation of the shaft and support the idle parts on the shaft.

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