Description: Plain Bearings are made of cast brass mounted with graphite, which are self-lubricating and don't need oiling. As good frictional property as high sliding , Sleeve Bearings have a small friction factor about 0.12. Cast Brass Bushing still allows high sliding during high temperature and corrosive environment. Oil-less Sleeve Bearings are most suitable for applications with rotating movements and where self-lubricating properties of the material Lubricating. Fixed method: Use vise or punching machine to press in. Use adhesive or locking screws to Anti falling.