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AssigneeNippon Seiko Kabushiki Kaisha
InventorsKyozaburo Furumura, Yasuo Murakami, Youichi Matsumoto, Kenji Takei, Takaaki Shiratani, Soji Nishida
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A rolling bearing, comprising an inner race, an outer race and rolling members which roll therebetween, at least one of the inner and outer races being subjected to carburizing and heating treatment, is characterized in that: the one race comprises a carbon steel containing 0.1 to 0.7 wt. % of carbon, with the residual austenite content on the track surface layer being 20 to 45 vol. % and the rolling members comprise a carbon steel containing 0.7 to 1.1 wt. % of carbon having carbonitriding and heating treatment applied on the surface layer, with the residual austenite content in such surface layer being 20 to 45 vol. % and the carbonitride in such surface being 3 to 15 vol. %. In another form of the bearing, the rolling members may comprise a carbon steel containing 0.1 to 0.7 wt. % of carbon, with the surface layers thereof being subjected to carburizing and heating treatment and having a residual austenite content of 20 to 45 vol. %.
A rolling bearing, comprising an inner race, an outer race and rolling members which roll therebetween, at least one of said inner and outer races having been subjected to carburizing and heating treatment, and wherein:
A rolling bearing, comprising an inner race, an outer race and rolling members which roll therebetween, at least one of said inner and outer races having been subjected to carburizing and heating treatment, and wherein:
Dependencies are inferred from the claim text.