Quick answer: Treat the change as a new geometry review. It can affect curvature, available rotation, end engagement and output.
Can an existing spring be moved to a different arbor diameter?
A seemingly minor shaft change may alter the inner coil's condition. Retaining the old torque specification does not prove the same spring remains suitable. Provide revised arbor, housing and working-turn drawings to the designer, then compare samples in the intended assembly.
A practical verification method
Measure torque over the revised operating window and inspect the inner region for contact or permanent geometry changes.
| Item | What to record | Purpose |
|---|---|---|
| Reference configuration | Part or assembly identity and drawing revision | Make comparisons traceable |
| Test conditions | Relevant position, direction and operating condition | Compare the same characteristic |
| Decision evidence | Measure torque over the revised operating window and inspect the inner region for contact or permanent geometry changes. | Resolve the specific question before approval |
Use the result in an engineering request
Describe the observed condition and the required function separately. Include the relevant drawing revision and your results from the check above. If an acceptance limit has not been established, identify it as an open design input rather than treating a successful trial as approval.
Review the related Leading Spring product information. For a project-specific review, send the mechanism description, available geometry and the evidence relevant to this decision through the contact page.
Editorial note: AI-assisted engineering guidance, prepared from the topic-specific reasoning shown here and the company’s public product context. Illustrations explain decisions; they are not customer-case photographs or test results. Product-specific suitability requires review against your approved requirements.