Bearing puller

By designing a bearing extraction device that utilizes hydraulic pressure and friction to efficiently extract the bearing, the problem of cumbersome disassembly and safety risks associated with deep groove ball bearings is solved, thus improving disassembly efficiency and safety.

CN224464604UActive Publication Date: 2026-07-07SHENHUA BAOSHEN RAILWAY GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENHUA BAOSHEN RAILWAY GRP
Filing Date
2025-07-11
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In the existing technology, the disassembly method of deep groove ball bearings is cumbersome and inefficient. In particular, the installation position of the 6313 bearing and the 6310 bearing is close to the motor rotor, making it impossible to remove them effectively. Oxygen welding operation poses safety risks and is time-consuming and labor-intensive.

Method used

A bearing removal device has been designed, including a rod, an adjusting plate, a support, and a locking component. The device uses a hydraulic system to provide pulling force, and the bearing is removed by the friction between the support and the locking component. It is suitable for bearings of different sizes and avoids the need for oxyacetylene welding.

Benefits of technology

It improves bearing disassembly efficiency, reduces locomotive maintenance time, lowers safety risks, and has a simple structure and is easy to operate.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224464604U_ABST
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Abstract

The application relates to a bearing pulling-out device, which comprises the following parts: a rod body top provided with a mounting seat for mounting a hydraulic device; an adjusting disc connected to the bottom end of the rod body; a plurality of supporting members respectively installed below the adjusting disc in the vertical direction, the supporting members being adjustably connected to the adjusting disc in the radial direction; and a locking member arranged at the bottom end of the supporting member, the bottom end of the locking member being partially arranged in an inclined mode and configured to extend into the space between the inner and outer rings of the bearing and clamp the bearing. The supporting member is adjustably connected to the adjusting disc, the position of the supporting member in the radial direction of the adjusting disc can be adjusted to adapt to bearings of different sizes, the bottom end of the locking member is arranged in an inclined mode and deeply extends into the space between the inner and outer rings of the bearing and clamps the bearing, the hydraulic device provides reverse pulling force, the force is transmitted to the bearing through the rod body and the supporting member, the bearing is pulled out by using the friction force between the clamping head and the bearing, the dismounting efficiency of the bearing is improved, and the locomotive maintenance time is reduced.
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