Copper-based oil self-lubricating bearings are tin bronze powder as raw material, mold pressing, after sintering at a high temperature plastic from. Its base has subtle, uniform pores formed after vacuum impregnation lubricant oil state. The product has a short-term non-lubricated, low cost, internal diameter size and other characteristics may change, adapt to the medium-speed and low load places. Products have been widely used in household appliances, electric tools, textile machinery, chemical machinery, automotive and office equipment and some general machinery occasions.