Rolling element
First Claim
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1. A rolling element comprising:
- a first member;
a second member coaxially disposed to the first annular member and rotatably movable relative to the first member; and
a diamond-like carbon material coated on a sliding surface of at least one of the first and second members,wherein the first and second members are in slidable contact with each other in the presence of a lubricating oil composition containing at least one of ashless fatty acid ester friction modifier and ashless aliphatic amine friction modifier.
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Abstract
A low friction sliding combination of a cam and a cam follower which are in slidable contact with each other in presence of a lubricating oil. The cam follower includes a cylindrical and hollow outer roller having an outer peripheral surface in slidable contact with the cam. A fixed pin is coaxially disposed inside the outer roller and rotatably movable relative to the outer roller. A diamond-like carbon material is coated on a sliding surface of at least one of the outer roller and the fixed pin. The lubricating oil contains at least one of ashless fatty acid ester friction modifier and ashless aliphatic amine friction modifier.
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Citations
15 Claims
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1. A rolling element comprising:
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a first member; a second member coaxially disposed to the first annular member and rotatably movable relative to the first member; and a diamond-like carbon material coated on a sliding surface of at least one of the first and second members, wherein the first and second members are in slidable contact with each other in the presence of a lubricating oil composition containing at least one of ashless fatty acid ester friction modifier and ashless aliphatic amine friction modifier.
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2. A rolling bearing comprising:
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an outer race; an inner race coaxially disposed inside the outer race and rotatably movable relative to the outer race; rolling members rotatably disposed between the outer race and the inner race; and a diamond-like carbon material coated on a sliding surface of at least one of the outer race, the inner race and the rolling members, wherein the outer race, the inner race and the rolling members are in slidable contact with each other in presence of a lubricating oil composition containing at least one of ashless fatty acid ester friction modifier and ashless aliphatic amine friction modifier. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification