Solid-lubricated bearings use solid lubricants to isolate surfaces in contact with each other to reduce surface friction and wear. Unlike oil film bearings, there is no flow of lubricating oil and grease, and its lubrication is achieved by lubricating materials. Solid lubricants behave like fluids when subjected to friction. A cavity or groove with a certain area ratio is pre-designed and machined on the bearing working surface. Elemental and compound solid lubricants are embedded in it.
How To Choose Solid Lubricated Bearing Matrix
The bearing base is affected by the load, embedded solid lubricant. Solid lubricating materials such as graphite, carbon, resin, soft metals, metal oxides, fluorides, etc., are organic and inorganic composite cross-linking and are processed by powder metallurgy technology. For layered solid lubricants, use strong adhesion to the friction surface to prevent direct contact with the friction surface. At the same time, the low shear force between the solid lubricant layers is screened to reduce the frictional resistance of the friction surface; for non-layered solid lubricants, materials with low shear force are selected to play a lubricating role and make other adhesions form. lubricating film.
The bearing matrix is tin bronze < manganese bronze < brass < cast iron or stainless steel. Bearing matrix and solid lubricant are selected according to different processing conditions such as high temperature < low temperature < corrosive medium.
Advantages of solid inlaid bearings
Adapt to low speed, high load working conditions
Suitable for wide temperature range, such as room temperature to 500℃
It can be used in the environment without enclosed dust
Can simplify the lubrication system and lubrication parts maintenance
Long time will not affect the good self-lubrication performance, will not form an uneven lubrication film
Can be widely adapted to different media, does not react with solvent, fuel
It has better vacuum resistance and radiation resistance than lubricating oil and grease
In vibration, shaking, oscillation and start frequency and reciprocating conditions, to achieve good self-lubrication