WB copper bearing metal bearing sliding bearing Detail products description WB is a conventional fully-lubricated monometallic bearing material, based on bronze backing with oil grooves, pockets evenly dispersed on the surface or oil holes transfixed through the whole body for lubrication. 1.Fully-lubricated. 2.High thermal conductivity and high load carrying capacity. 3.Excellent chemical resistance. 4.Machining allowance of 1.D available.