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ZKL has developed a new bearing for the rolling mills intended for Russian steelworks. This is a four-row tapered roller bearing with a spiral groove in the bore of inner rings. Components of these bearings are case-hardened due to high shock loads acting during bearing operation and the bearing itself has a running accuracy P5.
ZKL集团为俄罗斯钢厂的轧机研发了一种新轴承。四列圆锥滚子轴承，内圈孔中有一个螺旋槽，由于轴承运行期间的高冲击载荷而对轴承部件进行表面硬化，轴承运行精度P5。