The main function of bearings is to support mechanical rotating bodies, reduce their friction coefficient during motion, and ensure their rotational accuracy.According to the different friction properties of moving components, bearings can be divided into two categories: rolling bearings and sliding bearings. Rolling bearings have been standardized and serialized, but compared to sliding bearings, they have larger radial dimensions, vibration, and noise, and are also more expensive. Rolling bearings generally consist of four parts: outer ring, inner ring, rolling elements, and cage.
Commonly used for low-speed, heavy-duty, and difficult to lubricate and maintain mechanical rotating parts. The sliding contact surface of joint bearings is spherical, mainly suitable for swinging, tilting, and rotating movements.The bearing seat, which is usually produced as a matching part, also plays a relatively important role in the entire shaft system. In general, the pins are located at both ends of the bearing to support and fix the bearing, so that the shaft has a certain positional relationship with other connecting parts. Also, bearing seats are generally equipped with sealing devices, which can effectively reduce bearing pollution.
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