TAILORED METAL BUSHING SOLUTIONS
CUSTOM COMPOSITES SOLUTIONS FOR YOUR TOUGHEST PROJECTS
Our engineers will assist your team in determining the best metal bushing sleeve type, and metal bushing material finishing for your ideal application. Your chosen metal bushing composite construction can allow for these features in your bearings:
We continue to provide professional metal bearing products and tribology services to global customers.
A unique, non-metallic material composite bearing material
Non-metallic materials in the application of the most is a variety of plastics (polymer materials), such as phenolic resin, nylon, polytetrafluoroethylene, etc.
Polymer does not react with many chemical substances, especially strong corrosion resistance; It has a certain self-lubrication, can work under no lubrication conditions, and has a certain lubrication ability under high temperature conditions; Good embeddedness; Friction reduction and wear resistance are better. However, polymer has poor heat conduction ability, higher linear expansion coefficient steel, lower strength and yield limit than steel, and will appear creep phenomenon at room temperature, so it is not suitable to make bearings with strict clearance requirements.
Carbon-graphite can be used as bearing material in bad environment, in which the more graphite content, the softer the material, the smaller the friction coefficient. Liquid lubricants can also be impregnated by adding metal, polytetrafluoroethylene or molybdenum disulfide components to the carbon-graphite material. Carbon-graphite is self-moistening and can also be used as water-lubricated bearing material.
Rubber is mainly used as a lubricant with water and the environment is dirty.
Wood has a porous structure and can be improved with fillers. The filling polymer can improve the dimensional stability, reduce the moisture absorption and enhance the strength of wood. Bearings made of wood can work in extremely dusty conditions.
POROUS METALLIC BUSHING MATERIALS-POM METAL BUSHING SLEEVE
Porous metal materials are bearing materials made of different metal powders by pressing and sintering. The material is porous, with pores accounting for about 10%~35% of the volume. Before use, the bearing bush is impregnated in hot oil for several hours, so that the pores are full of lubricating oil. Therefore, bearings made of this material are usually called oil-bearing and have self-lubricating properties.
When working, due to the suction effect of the rotation of the journal and the expansion of the oil when the bearing is heated, the oil enters the friction surface for lubrication; When not working, because of the capillary action, the oil will be sucked back to the inner bearing, so for a long time, even without lubricating oil can still work very well. If regular oil supply, the use effect is better.
But the toughness of porous metal material is small, only suitable for stable no impact load and medium and low speed. Commonly used are porous iron and porous bronze. Porous iron is commonly used to make mill bushings, machine tool oil pump bushings, internal combustion engine CAM bushings, etc. Porous bronze is used to make bearings for record players, electric fans, textile machinery and car generators.