The three core functions of bearings are support, reducing friction, and transmitting power.
Support function: The most basic function of a bearing is to provide support, ensuring that the shaft axis remains stable and preventing excessive bending or vibration of the shaft during operation due to gravity or other external forces. Whether it's linear motion bearings in mechanical equipment or rolling bearings used for rotation, they provide an internal stable platform that allows the shaft to move smoothly.
Reduce friction: One of the core objectives of bearing design is to minimize frictional resistance. Good lubrication and sealing design help further reduce friction and improve efficiency.
Transmitting Power: In addition to providing support and reducing friction, bearings are also responsible for transmitting power when necessary. For example, in an electric motor or internal combustion engine, bearings connect the rotor and the stator, allowing the rotor to rotate smoothly and output power.