Structure of sliding bearing
When sliding bearings work, sliding friction occurs; the magnitude of rolling friction depends mainly on the manufacturing accuracy; and the size of the friction force of the sliding bearing depends mainly on the material of the sliding surface of the bearing. Plain bearings generally work with self lubrication functions; plain bearings are divided into non-metallic sliding bearings and metal sliding bearings in accordance with material.Non metal sliding bearing mainly plastic bearings, plastic bearings are generally made of relatively good performance of engineering plastics; more professional manufacturers generally have the self lubrication engineering plastics modification technology by fibers, special lubricants, glass beads and so on engineering plastics self lubrication modification to achieve certain performance. And then use the modified plastic into plastic self lubricating bearing by injection molding.
The structure of the radial sliding bearing is divided into two kinds: 1, the integral type is composed of a bearing seat, a shaft sleeve or a bearing bush. The utility model has the advantages of simple structure and low cost, but the gap caused by abrasion can not be adjusted and can only be loaded and unloaded along the axial direction. 2, split the bearing seat or bearing separation manufacturing, and the two part of the bolt connection. The utility model is characterized in that the gap caused by abrasion can be adjusted, and the installation is convenient, but the structure is complicated.
The metal sliding bearing is the most used three layer composite bearing, the bearing is generally based on carbon steel substrate by sintering technology in steel plate on the first layer of spherical copper powder sintering, and then on the copper layer on the sintering of PTFE lubricant layer is about 0.03mm; the middle layer spherical copper main role is to enhance the bonding strength between steel plate and PTFE, in the course of work also plays a certain role in bearing and lubrication.
