Quick answer: State the reference assembly position, winding direction, preload turns and resulting torque. A turn count alone does not prove the required output.
How should preload be specified clearly?
An arbitrary free-state datum can shift when the arbor or outer attachment changes. Two assemblies with equal turn counts may then start at different torque. Use a documented setting procedure and measure its result before finalizing the specification.
A practical verification method
Measure initial torque at the final setup position and verify the remaining rotation in both working directions.
| 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 initial torque at the final setup position and verify the remaining rotation in both working directions. | 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.