Ball bearing
JP2026009646APending Publication Date: 2026-01-21NACHI FUJIKOSHI CORP
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Patent Information
- Application Number
- JP2024109666
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2026-01-21
AI Technical Summary
Technical Problem
Existing ball bearings suffer from lead/lag issues that cause excessive load on balls and cage, leading to increased friction torque, rotational sliding noise, and wear, despite enlarged pockets in the cage.
Method used
The ball bearing features widened portions on the outer or inner ring with a constant diameter at the raceway bottom and increased radius of curvature, preventing contact between balls and raceway surfaces during misalignment, thereby eliminating lead/lag and reducing friction torque and noise.
Benefits of technology
The configuration effectively reduces friction torque and rotational sliding noise while preventing cage damage due to wear by allowing balls to revolve without load application in the widened portions.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026009646000001_ABST
Abstract
To provide a ball bearing capable of eliminating advance and delay by releasing an excessive load, reducing friction torque and rotation sliding noise, and preventing damage of a cage due to wear.SOLUTION: A ball bearing 100 according to the present invention includes an outer ring 110, an inner ring 120, and balls 130 rolling between the outer ring 110 and the inner ring 120, wherein at least one of the outer ring 110 and the inner ring 120 has one or more widened portions 126, and the widened portion 126 has a larger curvature radius in a width direction of a raceway surface 122 than a portion other than the widened portion 126 while a diameter of a raceway bottom 124 remains constant.SELECTED DRAWING: Figure 1
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