The fundamental purpose of bearings in machinery is to provide steadfast support to rotating bodies, significantly reducing frictional resistance, and ensuring exact precision in motion. Bearings are ingeniously designed to meet the frictional dynamics of their components, leading to their classification into two principal types: rolling bearings and sliding bearings. Rolling bearings, which are standardized and come in serialized forms, are distinct with their larger radial dimensions, along with noticeable levels of vibration and noise compared to their sliding counterparts, and generally command a higher price. A conventional rolling bearing intricately combines four essential components: an outer ring, an inner ring, rolling elements, and a cage, each contributing to the seamless, efficient operation.
These sophisticated components are indispensable in scenarios involving low-speed, high-load conditions with stringent lubrication and maintenance challenges for rotating mechanical parts. Joint bearings, with their spherical sliding contact surfaces, are especially tailored for complex motions that involve swinging, tilting, and rotating. Beyond this, the bearing seat, often crafted as a seamlessly integrated component, is pivotal in the entire shaft system. Typically featuring pins at both extremities, these seats offer robust support and stabilization, maintaining precise alignment with other connected parts. To enhance durability, bearing seats are usually equipped with sealing devices, which play a vital role in minimizing contamination and significantly prolonging the lifespan of the bearings.