According to feedback from a bicycle brand, the rear guide wheel exhibited noticeable wobbling after prolonged use, leading to unstable chain operation and negatively impacting overall riding performance and experience. A thorough investigation revealed that the issue primarily stemmed from the miniature ball bearing (model: 607-2RS) used in the rear guide wheel, where the gap configuration had not been optimized according to actual requirements. We worked closely with the client's engineers to implement improvements.
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