Rolling bearing with improved wear resistance

Details Rolling bearing with improved wear resistance Rolling bearing with improved wear resistance

1995-08-08

1997-08-26

Yee, Deborah

Metal treatment

Stock

Carburized or nitrided

148906, C23C 822, C23C 832, C22C 3824

Patent

active

056606478

ABSTRACT:
In a rolling bearing including an inner race, an outer race and a plurality of rolling elements in which at least one member of the inner race, the outer race and the rolling elements is made of an alloy steel containing: 0.1 to 0.7 wt % of C; 0.8 to 2.0 wt % of V; 0.5 to 3.0 wt % of Cr; 0.3 to 1.2 wt % of Mn; 0.3 to 1.5 wt % of Si; at most 3.0 wt % of Mo; and the balance being Fe, the member being carburized or carbonitrided so that the member has a surface carbon concentration of 0.8 to 1.5 wt % and a surface concentration ratio V/C of 1 to 2.5 in order to cause VC-type carbides to be precipitated on a surface of the member, the rolling bearing exhibits improved wear resistance under a severe condition such as a high-temperature environment and simultaneously the rolling bearing has superior productivity.

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