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US 11,739,788 B2Granted
Crankshaft and method of manufacturing the same
AssigneeNippon Steel Corporation
InventorsTatsuhiko Abe, Manabu Kubota
Life of this patent
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Abstract
A crankshaft with improved seizure resistance is provided. A crankshaft includes a journal and a pin, each of the journal and pin having such a surface geometry that the arithmetical mean height of the primary profile, Pa, is 0.090 μm or smaller and the reduced peak height Rpk is 0.070 μm or smaller. As used herein, arithmetical mean height of a primary profile Pa is defined in JIS B 0601 (2001), and reduced peak height Rpk is defined in JIS B 0671 (2002).
Claims2
A crankshaft comprising:
- a journal;
- and
- a pin,
- each of the journal and pin having such a surface geometry that an arithmetical mean height of a primary profile, Pa, is 0.090 μm or smaller and a reduced peak height Rpk is 0.070 μm or smaller,
- wherein the arithmetical mean height of a primary profile Pa is defined in JIS B 0601 (2001), and the reduced peak height Rpk is defined in JIS B 0671 (2002).
2 more elements
Dependencies are inferred from the claim text.