Bearings are a type of mechanical part. They are so important to the machine industry that they have been given an important title such as “bread and butter” of the industry. They are used in all kinds of machines, including household appliances, but because they work in the shadows, most people who aren’t involved in the machine industry probably wouldn’t understand what bearings are, but I will explain it in detail below.

To simplify it, bearings are parts that assist objects’ rotation in a machine. They support the shaft that rotates inside the machinery. Machinery that uses bearings includes air conditioner compressor rotation of fans, electric generators, fans, automobiles, refrigerators, vacuum cleaners, and many industrial machines.

The reason why they are given the title of bread and butter is because bearings support the rotating shaft of these equipment shafts, wheels, gears, turbines, allowing them to rotate smoothly, and basically, if there is a machine running, there will be bearings inside.

Friction occurs between the rotating shaft and the part that supports the rotation (refer to figure for example). Bearings are used between these two components. Bearings protect the shaft and support the rotation, as well as maintain the correct position of the rotating shaft.