In the field of automation (for doors and gates) we find the use of two types of bushings : self lubricating and bronze / iron sintered bushings.
Self lubricating bushings are suitable for dry running with a low coefficient of friction, low wear rate, good sliding characteristics, and the transfer film created will protect the mating metal surface. Suitable for rotary and oscillating movement, high chemical resistance, lower absorption of water and swelling’s reduction. It also performs well with lubrication.
PTFE/Fibre provides an excellent initial transfer film, which effectively coats the mating surfaces of the bushing assembly, forming an oxide type solid lubricant film. Thermal conductivity away from the bushing surface, also serves as a reservoir for the PTFE-Fibre mixture.
Bronze / iron sintered bushings : the base material for sintered parts such as sliding bushings or other formed parts are iron, bronze, iron with bronze and other metal in powder form. This powder is formed under high pressure in dies into a temperature which is just below the melting point. Available in cylindrical and flanged format.
- Good wear resistance with lower friction
• Lower the material cost for large production
• Can be machined again after installation if possible
• Lower maintenance requirement
• High speed with lower noise
• Different structures could be available against special
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