Bearing parts

Abstract

Bearing parts are formed of damping steel containing 0.2 to 0.6 wt. % C, 5.0 to 15.0 wt. % Cr, 0.2 to 1.3 wt. % Si, 0.05 to 0.20 wt. % N, and comprising Fe and inevitable impurities as the remaining. The damping steel may be hardened in an ordinary manner to have a surface hardness, in terms of Rockwell C hardness of at least 57.

What is claimed is:  
     
         1 . A bearing part comprising damping steel that contains from 0.2 to 0.6% by weight of C, from 5.0 to 15.0% by weight of Cr, from 0.2 to 1.3% by weight of Si, from 0.05 to 0.20% by weight of N, and comprises Fe and inevitable impurities as the remaining.  
     
     
         2 . The bearing part according to  claim 1 , wherein the damping steel is hardened in an ordinary manner to have a surface hardness, in terms of Rockwell C hardness of at least 57.  
     
     
         3 . The bearing part according to  claim 1 , wherein the Cr content falls between 6.0 and 11% by weight.  
     
     
         4 . The bearing part according to  claim 1 , wherein the Cr content falls between 9.0 and 10% by weight.  
     
     
         5 . The bearing part according to  claim 1 , wherein the N content falls between 0.09 and 0.15% by weight.