Taper hole with tapered ratio of 1:30 Two-divided window type steel punching cage Bunctureless inner ring Inner ring guide type guide wheel Oil grooves and three oil holes in the outer ring Inner ring diameter (mm): 220 Outer ring diameter (mm): 370 Width (mm): 150 工作温度范围(℃):-40至+200 精度等级:ISO 492维度准确性宽度公差小于ISO标准的一半,旋转精度P5等级P5等级