Solid self-lubricating bearings and shaft sliding friction occurs, and the shaft in the course of the operation to pass the torque and movement, so the hardness of the shaft material and strength requirements, 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 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 range of Ra0.4 ~ 1.6; too bright or too
rough surface is not conducive to the transfer of lubricant to the face
of the formation 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.