Quick answer: A counterweight can offset part of the load, leaving the spring to address a residual requirement. Compare the combined load curve rather than simply adding nominal ratings.
Why use a counterweight as well as a spring?
The counterweight's lever geometry may also vary with angle. Additional mass changes inertia and moving effort. The combined design should therefore be evaluated for static balance and dynamic response, including travel limits and mechanical interference.
A practical verification method
Measure residual load torque with the counterweight installed, then validate the selected spring across the same angular range.
| 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 residual load torque with the counterweight installed, then validate the selected spring across the same angular range. | 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.