Quick answer: When bearing and seal drag occupy a significant share of the available torque, measure them explicitly instead of treating them as negligible.
When does bearing resistance become a major design input?
An output selected close to the minimum load can be consumed by friction. Low-speed stiction may be more important than running drag. Bearing choice, alignment and sealing should be reviewed together before increasing spring torque and creating excess force elsewhere.
A practical verification method
Measure shaft breakaway and running resistance without spring drive; repeat in the assembled housing.
| 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 shaft breakaway and running resistance without spring drive; repeat in the assembled housing. | 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.