Solid self-lubricating bearings for wear parts requirements

Solid self-lubricating bearings are mainly JDB - 1, SF - 1, FB09G, series of bearings, such as in the initial stage work step by step through the running-in wear self-lubricating material gradually moved to the pits on the surface of grinding work to form a solid lubricating film;The friction and wear performance mainly depends on the performance of the solid lubricant feit self-lubricating bearing face material usually adopt copper alloy, aluminum alloy, double metal, babbitt and so on, teflon PTFE, modified polyformaldehyde, rubber, molybdenum disulfide, graphite, etc.On the surface of solid self-lubricating bearing can form solid lubrication film after separate motion pair surface, sliding friction can be greatly reduced, and also to avoid axis wear.
Feit solid self-lubricating bearing and sliding friction shaft, and the shaft to transfer torque in the process of operation and exercise, so the hardness and strength of shaft material such as the demand is higher, JDB - 1 self-lubricating bearings commonly used for grinding metal, hardness HRC40 ° above;Insist on low SF - 1, USES the average of 45 # steel can be.For the friction and wear performance mainly depends on the properties of solid lubricants, solid self-lubricating bearing bearing capacity is big, high rotary precision, solid lubrication film has good impact.
Solid lubrication film for solid self-lubricating bearing working surface has good lubricating material itself, in the initial stage work step by step through the running-in wear self-lubricating materials gradually moved to the pits on the surface of grinding work to form a solid lubricating film;This for grinding work surface roughness has certain requirements, general requirements between Ra0.4 ~ 1.6;Too smooth or surface roughness are unfavorable to lubricant transferred to face hindered the lubricating film is completed;General requirements for solid lubrication bearing is grinding surface to the ground surface;When solid lubrication film fully formed, actual between shaft and bearing movement has been transformed into lubricating film and the bearing friction between the movement, shaft actually has no direct contact with the bearing surface.