Flange bbushing has wear resistance, corrosion resistance, high strength and other characteristics, and itself has the characteristics of welding, mechanical equipment and other fields have played a good role. Flange bushing is a metal powder as the main raw material, oil bearing and oil can be used for a long time, commonly used in refueling inconvenient occasions. This bearing was invented in the early twentieth Century, because of its low cost, easy to use, has been widely used, has become a kind of indispensable basic part of the development of automobile now, household appliances, audio equipment, office equipment, agricultural machinery, precision machinery and other industrial products. It belongs to a series of sliding bearing, the outer edge of series of products with a flange, the axial positioning easier, more economical. Reduce bearing friction torque, improve its high rigidity and good rotation accuracy. . In the use process, through the friction heat to solid lubrication and shaft friction, the formation of oil, powder lubrication of excellent conditions, not only to protect the shaft and wear, but also the solid lubrication characteristics of the eternal v