Thrust double-row needle bearing
By employing an inclined symmetrical needle roller design and a retaining ring for fixing in a thrust double-row needle roller bearing, the problems of load capacity and assembly complexity of existing needle roller bearings are solved, achieving a compact and simple assembly process.
CN224433130UActive Publication Date: 2026-06-30何健
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Patent Information
- Application Number
- CN202522061888.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2026-06-30
- Estimated Expiration
- 2035-09-25
AI Technical Summary
Technical Problem
Existing needle roller bearings have shortcomings in terms of assembly, load capacity, and space occupation, especially in terms of weak axial load capacity and complicated assembly.
Method used
The design of the thrust double-row needle roller bearing employs inclined and symmetrical needle rollers between the outer and inner rings. The raceway cross-section is a complementary inverted isosceles trapezoid or a regular isosceles trapezoid. The needle rollers are fixed by a retaining ring and connecting screws, simplifying the assembly process.
Benefits of technology
It achieves strong radial and axial load capacity, is compact, easy to assemble, and easy to maintain.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a thrust double-row needle roller bearing which comprises an outer ring, an inner ring, a needle roller I and a needle roller II, the outer ring is connected to the inner ring in a sleeved mode, a roller path I is arranged on the inner wall of the outer ring, a roller path II is arranged on the outer wall of the inner ring, and the cross section of the roller path I and the cross section of the roller path II are complementary inverted isosceles trapezoids or regular isosceles trapezoids. The roller path I and the roller path II bear and limit the roller pin I and the roller pin II which are symmetrically and obliquely arranged, and the roller pin I is positioned above the roller pin II. The bearing is characterized in that a roller pin inlet / outlet is formed between the roller path I and the roller path II, a limiting check ring for limiting the roller pin is arranged at the roller pin inlet / outlet, and the limiting check ring is fixedly connected with the outer ring or the inner ring through a connecting screw. Compared with the prior art, the utility model has the advantages of stronger radial load and axial load capacity, compact space and simplicity and convenience in assembly.
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