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US 12,337,372 B2Granted
Low-friction tapered roller bearing and manufacture method thereof
AssigneeAktiebolaget Skf
InventorsJinyan Lu, Xiaoyu Zhang, Ya Wang, Congying Wang
Life of this patent
Estimating the term…
Abstract
A method includes providing a tapered roller bearing including an outer ring having a raceway surface, an inner ring having a raceway surface and a plurality of tapered rollers each having a rolling surface and a large end-face; optimizing a surface roughness of at least one surface selected from the following set of surfaces: the outer ring raceway surface, the inner ring raceway surface, the rolling surfaces of the tapered rollers and the large end faces of the tapered rollers; and black oxidizing the at least one first surface.
Claims17
A method comprising:
- providing a tapered roller bearing including an outer ring having a raceway surface, an inner ring having a raceway surface and a plurality of tapered rollers each having a rolling surface and a large end-face,
- optimizing a surface roughness of at least one first surface selected from the group consisting of:
- the outer ring raceway surface, the inner ring raceway surface, the rolling surfaces of the tapered rollers and the large end faces of the tapered rollers,
- black oxidizing the at least one first surface.
1 more element
A method comprising:
- selecting a tapered roller bearing having a friction torque too high for a given application, the tapered roller bearing including an outer ring having a raceway surface, an inner ring having a raceway surface and a plurality of tapered rollers each having a rolling surface and a large end-face,
- optimizing a surface roughness of at least one surface of the tapered roller bearing selected from a group consisting of:
- the outer ring raceway surface, the inner ring raceway surface, the rolling surfaces of the tapered rollers and the large end faces of the tapered rollers,
- after the optimizing, black oxidizing the at least one surface, and
- after the optimizing and the black oxidizing, using the tapered roller bearing in the given application.
2 more elements
Dependencies are inferred from the claim text.