轴承密封结构
By combining a non-contact sealing structure and a multi-stage labyrinth sealing path, the problem of sealing failure of radial ball bearings under harsh working conditions is solved, achieving efficient sealing protection and grease retention, extending bearing life and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- C&U CO LTD
- Filing Date
- 2026-06-22
- Publication Date
- 2026-07-17
AI Technical Summary
The existing sealing structure of radial ball bearings is prone to failure under harsh working conditions, leading to the intrusion of external impurities or grease leakage, which affects the bearing life and the reliability of equipment operation.
A combined non-contact sealing structure is adopted, including a first sealing ring and a second sealing ring, forming a multi-stage labyrinth sealing path, and an oil reservoir and a conical structure are set between the first sealing ring and the second sealing ring to enhance the sealing effect.
It improves sealing and protection capabilities, extends bearing service life, reduces frictional resistance and power consumption, enhances grease retention capacity, and improves bearing operational reliability.
Smart Images
Figure CN224515698U_ABST
Abstract
Claims
1. A bearing seal structure, characterized by: It includes a first sealing ring and a second sealing ring. The outer diameter of the first sealing ring is fitted onto the outer ring of the bearing, and the inner diameter of the first sealing ring extends toward the inner ring. The inner diameter of the second sealing ring is fitted onto the inner ring of the bearing, and the outer diameter of the second sealing ring extends toward the outer ring and covers the outside of the first sealing ring. The first sealing ring and the second sealing ring are fitted with a clearance to form a first clearance sealing section and a second clearance sealing section.
2. The bearing seal structure of claim 1, wherein: The first sealing ring includes a groove with a V-shaped cross-section. The outer diameter of the second sealing ring extends into the groove and is in clearance fit with the inner wall of the groove. The cross-section of the outer diameter of the second sealing ring is tapered and gradually decreases. The first gap sealing section is formed by the groove and the outer diameter of the second sealing ring.
3. The bearing seal structure of claim 2, wherein: The second sealing ring includes an inclined surface extending out of the groove.
4. The bearing seal structure of claim 1 or 2 or 3, wherein: The first sealing ring includes several oil reservoirs, which are arranged adjacently on the end face of the first sealing ring facing the second sealing ring. The oil reservoirs contain lubricating grease. The second gap sealing section is composed of several oil reservoirs and the second sealing ring.
5. The bearing seal structure of claim 1 or 2 or 3, wherein: The first sealing ring includes a first skeleton, one end of which extends to the groove and the other end of which extends to the inner diameter of the first sealing ring. The second sealing ring includes a second skeleton, which is L-shaped, one end of which extends axially and the other end of which extends to the outer diameter of the second sealing ring.