bearing unit
By using laser ablation to form controlled surface structures on the sliding raceway and rolling element surfaces of the wheel hub assembly, the friction problem between the outer sliding raceway and the rolling element is solved, thereby reducing friction loss and improving energy efficiency.
CN122280965APending Publication Date: 2026-06-26AB SKF SKF PATENT DEPARTMENT
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- AB SKF SKF PATENT DEPARTMENT
- Filing Date
- 2025-12-16
- Publication Date
- 2026-06-26
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Figure CN122280965A_ABST
Abstract
A bearing unit (10, 10') having a central axis of rotation (A) and comprising: a radial outer ring (40) having at least one sliding raceway (51e, 52e, 54e); a rotatable radial inner ring (30) having at least one sliding raceway (51i, 52i, 54i); and a plurality of rolling elements (53, 55) between the radial outer ring (40) and the radial inner ring (30), wherein at least one of the sliding raceways (51i, 52i, 54i, 51e, 52e, 54e) and the rolling elements (53, 55) is provided with a controlled surface structure (60), the controlled surface structure comprising microgrooves (61) separated by peaks (62), wherein the microgrooves (61) are arranged along intersecting lines.
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