Metal-based inlaid solid self-lubricating bearing: is a new type of lubricating bearing with both characteristics of metal bearings and self-lubricating bearings. It is loaded by metal matrix, and lubricated by special formulation of solid lubricating materials. It has the characteristics of high carrying capacity, impact resistance, high temperature resistance and strong self lubrication ability. Traditional oil bearing: Because of its low noise and self-lubrication advantages, oil bearing has become a new favorite of computer CPU fan bearing, and the market demand is large. In addition, with the increasing demand for noise, oil bearing in daily household appliances is also expanding.