SF-1B is of high safety factor, and is particularly appropriate for high temperature environment where no oil is effcient 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
