Taper hole with tapered ratio of 1:12 inner diameter inner ring Two-divided window type steel punching cage Snubbed inner ring Candle guide type guide wheel Internal design optimized for increased load capacity Outer ring diameter (mm): 80 Outer ring diameter (mm): 170 Width (mm): 58 Operating温度范围(℃):-40至+200 准确性等级:ISO 492维度精度宽度公差 收费准确性P5级