Oil-impregnated bearing structure enables it to absorb lubricating oil well

The porous structure of the oil-impregnated bearing enables it to absorb lubricating oil well. After the oil-impregnated bearing is impregnated with 10% to 40% of the lubricating oil, it can lubricate itself during the operation of the equipment. The application of oil-impregnated bearings has obvious effects on mechanical equipment that runs for a long time and is difficult to maintain a lubricated state.

Lubrication principle of oil-impregnated bearings:
After the oil-impregnated bearing is impregnated with lubricating oil and put into operation, with the friction and heat of the mechanical equipment, the temperature of the oil-impregnated bearing will increase accordingly. Since the expansion coefficient of oil is higher than that of metal, the lubricating oil in the oil-impregnated bearing will automatically enter the lubricating surface. To lubricate the bearing, and when the mechanical equipment stops running, the temperature of the oil-containing bearing drops, and the lubricating oil will be sucked back into the pores.

Oil-impregnated bearings make use of the porous properties of various materials and the affinity of lubricating oils to keep the bearings themselves able to work for a long time without external lubrication, but this feature also makes the lubrication of oil-impregnated bearings different from ordinary lubrication. In the state of complete oil film, the friction that occurs is mixed friction.

Application of oil-impregnated bearings:
Oil-impregnated bearings are cost-effective and easy to apply. Once they appear, they are widely favored in the production field, including automobile manufacturing, office supplies, household appliances and industrial machinery. Oil-impregnated bearings are used in various fields.