DU bush sliding bearing is of high safety factor , and is particularly appropriate for high temperature environment where no oil is efficient and where the machine must be under successive long period working condition . This is widely used in steel metallurgy industry such as bushes for roller grooves of successive casting machines , cement grouting pumps and screw convery ers for cement . It can also be composed in steel housing or fabricated into flanged bushes which can move both in radial and in axial directions.