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): 170 Outer ring diameter (mm): 260 宽度(mm):90 工作温度范围(℃):-40至+200 精度等级:ISO 492维度准确性宽度公差 运行率P5等级P5等级