The sliding friction of sliding bearing reduces the wear of shaft

Solid self-lubricating bearings are mainly JDB-1, SF-1, FB09G, and other series of bearings, in the initial stage of the work gradually through the wear and tear self-lubricating material gradually transferred to the surface of the grinding parts of the surface of the formation of hard lubricants ; Its friction and wear properties mainly rely on the performance of solid lubricants, self-lubricating bearing face material is usually made of copper alloy, aluminum alloy - bimetallic, babbitt, polytetrafluoroethylene PTFE, modified polyoxymethylene, rubber , Molybdenum disulfide, black lead and so on. Its solid self-lubricating bearing surface can form a solid lubricating film after the movement of the sub-surface separation, sliding friction can be greatly reduced, but also to avoid the shaft wear.

 

Solid self-lubricating bearings and shaft sliding friction, and the shaft in the course of the operation to pass the torque and movement, so the hardness and strength of the shaft material and other requirements are higher, JDB-1 self-lubricating bearings generally use metal grinding parts, hardness HRC40 °; SF-1 requires a lower, generally 45 # steel can also be used. For the friction and wear performance is mainly dependent on the performance of solid lubricants, solid self-lubricating bearing bearing capacity, high rotation accuracy, solid lubricating film with impact resistance.
Solid lubricating film for the solid self-lubricating bearing face material itself has a good self-lubricating properties, in the initial stage of the work gradually through the wear and tear self-lubricating material gradually transferred to the surface of the grinding parts of the surface of the formation of hard lubricants; This is a certain requirement for the roughness of the face of the workpiece, generally in the order of Ra0.4 ~ 1.6; too bright or too rough surface is not conducive to the transfer of lubricant to the work surface hindered the completion of the lubricating film; Solid lubricating bearings are generally required to be grinding surface to the polished surface; when the solid lubricating film is fully formed, the movement between the shaft and the bearing has actually been transformed into the friction between the lubricating film and the bearing movement, the shaft is not directly Contact with the bearing surface.