large spherical roller bearings 1.Bearing material:GCr15,100Cr6,52100 2.Retainer:brass,steel cage 3.Reliable quality Large spherical roller bearing,please contact IXIN for details.Accuracy Dimensional tolerance and geometrical accuracy is based on GB/T307.(ISO 492,DIN620)Material Material for cylindrical roller is GCr15 (100 Cr6) bearing steel, quench-hardness HRC60---65.Material for inner and ...