Description of the compositebushings The oil-free lubrication bearing is based on a steel plate. It has the properties of a low coefficient of friction, good wear resistance, good corrosion resistance and oil-free lubrication. Using this product can reduce costs. Products have been widely used in sliding parts of various machines such as printing machines, textile machines, tobacco machines, fitness equipment, etc.
Tri-layer bushing have a base of lower carbon steel backed bushings, onto which a porous bronze layer is sintered. PTFE mixtures are impregnated into the of this bronze layer after rolling process completed. It has good physical & mechanical properties, also has certainly chemical properties. It is suitable for rotary, oscillating movement with performance of self-lubricating. Anti-wear, lower noise.
After rolling process completed, PTFE mixtures are filled in intersice of bronze layer. Under normal operation, Part of PTFE mixture on top layer will be removed and transferred on the mating surface, forms a physically lubricating film, which will reduced the firction coe. and protect the mating shaft. 2 Porous Bronze layer; The layer provides bonded strength of Self-Lub. Layer. 3 Steel Backing The layer provides load & thermal conductivity 4 Copper / Tin layer Material
Engineered composite bushings materials from bronzelube are designed with base materials, PTFE reinforcements and solid lubricants that are transferred into the micro-finish of the shaft, eliminating the need for external lubrication.
The surface polymer is resistant to chemical corrosion, so its corrosion resistance mainly depends on the steel back and the surface plating. Copper or tin plating on steel back surface can effectively prevent atmospheric corrosion; If working in corrosive medium, steel back can be galvanized, etc.
Composite Bearing Characteristics
The so-called “self-lubricating bearings” means no or less oil is added. The goal of our research is to ensure that the composite bearing can still perform well under such conditions and extend its service life as much as possible. Self-lubricating bearing is the basic working principle of solid lubricant on the surface of the bearing in the early operational stage due to the friction of ask each other to form a transfer film and coat the to eventually form solid lubrication film on the grinding parts to achieve the purpose of self lubrication, which partition the direct contact between the workpiece and good protection of grinding extend the service life of the bearing and artifacts.
Composite series metal composite self-lubricating materials with high quality low carbon steel as the substrate, sintering porous spherical copper powder layer, the surface of copper is given priority to with PTFE wear-resistant lubricating materials as bearing layer, the material has excellent mechanical bearing capacity, the middle copper powder layer can not only transfer the heat generated by the bearing during operation in time, but also increased the strength of the combination of the plastic layer and substrate. PTFE is designed for full dry friction and a variety of materials have been developed according to lubrication, friction coefficient and durability requirements. VIIPLUS’s PTFE metal composites provide the best performance over the widest range of loads, speeds and temperatures with or without external lubrication.