Patent ID: 6712520
Filing Date: 2004-03-30
Classification: F16C

Abstract:
A cage made of a low carbon steel for use in a rolling bearing having an outer ring, an inner ring and a plurality of rolling elements disposed rotationally between the outer ring and the inner ring, the cage comprising a plurality of pockets for retaining the rolling elements in an equi-distribution in the rotating direction of the rolling elements, whereinthe low carbon steel is a steel containing from 0.02 to 0.10% by weight of C and from 0.10 to 0.45% by weight of Mn and is subjected to plastic working, the hardness for the cage surface at least at a portion in contact with the rolling element is Hv 190 to 270, and the hardness for a core portion of the cage is Hv 110 to 170.