Bearing by powder metallurgy
Self-lubricating powder metallurgy oil-impregnated bearings continuously supply lubricant stored within their porous structure to the friction surface during operation, forming an oil film without the need for external lubrication. This functionality is achieved through thermal and pump effects: the thermal effect causes the oil to expand and flow when heated by friction, forming a lubricating layer, and to retract into the pores as temperatures drop; the pump effect circulates the oil through the bearing as rotation draws it in and out of the micro-pores.
These bearings offer excellent self-lubrication, particularly under low-speed and high-load conditions, and allow for material adjustments to enhance wear resistance and performance. They also reduce friction and noise, provide good run-in behavior due to adaptable surface deformation, and are widely used in food processing machinery, textile equipment, household appliances, small motors, timing mechanisms, and precision instruments.
