Taper hole with inner diameter of 1:30 tapered ratio C3 clearance (large gap) Two-divided window type steel punching cage Breathless inner ring Inner ring guide wheel Oil grooves and three oil holes on outer ring Inner ring diameter (mm): 130 Outer ring diameter (mm): 210 宽度(mm):80 工作温度范围(℃):-40至+200 准确级:ISO 492维度准确性宽度公差小于ISO标准,旋转精度P5等级的一半,