Roller Bearing Ring Projections to Prevent Self-Locking Dismounting
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Solution Overview
Problem
Existing roller bearings face challenges with self-locking during dismounting due to changes in diameter, leading to difficulties in removal without specialized tools or trained personnel.
Innovation Solution
Incorporating projections on the roller bearing ring, specifically designed to limit raceway dimensions and facilitate dismounting by transferring dismounting force to roller elements, with optional grooves and circlips for easy fixation and mounting, allowing for axial displacement management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If roller bearings are mounted between shaft and housing, then they can support radial and axial loads, but they become difficult to dismount due to self-locking caused by diameter changes
Solution Approach 1:
The patent applies preliminary action by providing dismounting projections that extend beyond the raceway diameter before dismounting begins. These projections make initial contact with the roller elements, establishing a predetermined dismounting path that prevents self-locking from the start of the dismounting process, thereby enabling easy removal while maintaining strong load bearing capacity during operation
2Force
If the bearing is pressed tightly between shaft and housing, then it can accommodate heavy radial loads, but it becomes stuck during dismounting due to self-locking
Solution Approach 1:
The dismounting projections serve as intermediaries between the dismounting tool and the roller elements. During dismounting, these projections transfer the dismounting force directly to the roller elements, preventing the bearing from getting stuck between the shaft and housing. This intermediary mechanism ensures reliable dismounting while the bearing maintains its tight fit and high radial load capacity during normal operation
3Force
If specialized tools and trained personnel are used for dismounting, then proper force can be applied to remove the bearing, but the process becomes complex and time-consuming
Solution Approach 1:
The bearing structure provides self-service for dismounting through the integrated dismounting projections that extend beyond the raceway. These projections automatically engage with the roller elements when a simple axial force is applied, eliminating the need for specialized dismounting tools and complex procedures. The bearing essentially dismounts itself with minimal external intervention, reducing both device complexity and time requirements
Data Source
AI summary
A roller bearing ring having at least one raceway. The raceway provides a first and a second axial end and a diameter of the first axial end and a diameter of the second axial end are either both greater than the mean diameter of the raceway or both less than the mean diameter of the raceway. The roller bearing ring includes a projection, which is on the same side of the bearing ring as the raceway and which limits the raceway without being a part of the raceway.