What Is the Principle of Self-lubricating Bearings?

Due to the requirements of special production processes, some of the critical equipment of industrial and mining enterprises operates in extremely harsh conditions. Due to heavy equipment, high ambient temperature, large dust or air containing acidic corrosive gas CO, SO2, etc., the lubrication of equipment brings a lot of problems, friction wear is serious, so far, most of the above-mentioned enterprises in China still use the traditional oil, grease lubrication, and in fact, these industrial and mining conditions have been beyond the scope of oil, grease lubrication, very easy to occur bearing friction and other side bites or bites, causing serious part wear and damage, frequently causing equipment suspension.

In order to produce continuous operation, in addition to the original design requires the installation of multiple equipment wheel repair, but also need to invest a large number of maintenance personnel. Severely limited productivity gains, spare parts and energy consumption have become an important obstacle to the development of production. Automotive manufacturing, cement production, petrochemical and other enterprises have put forward the requirements of providing special lubrication materials under complex conditions.

To this end, the research on mosaic self-lubricating composite materials, in the material formulation and preparation process to highlight their own characteristics, material performance has reached the international advanced level, for enterprises to solve the problem of lubrication under special conditions, and brought obvious economic and social benefits. However, due to a variety of reasons, more domestic enterprises have not yet adopted, the above situation still exists.

Key technical principles

The composite material used in the inset self-lubricating bearing is a new type of anti-extreme pressure solid lubrication material, which is composed of a metal substrate and a solid lubricant paste embedded in the hole or groove of the substrate. During friction, the metal substrate bears most of the load. After friction, the solid lubricant in the hole or groove is transferred or reverse-shifted to the friction surface, forming a solid transfer film on the friction surface that is well lubricated, firmly attached and evenly covered, greatly reducing friction wear. With friction, embedded solid lubricants are continuously provided on the friction surface, ensuring good lubrication of friction alt-thorts during long-term operation.