Mechanical planning
Estimate a torque or force capacity requirement before opening a detailed component calculation.
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Engineering toolkit
Turn an operating load and a clear set of assumptions into a minimum required capacity and an easy-to-review design margin.
For practical checks
Use this calculation to organize a preliminary load case, make your safety assumptions explicit, and identify whether an entered rating deserves closer review.
Estimate a torque or force capacity requirement before opening a detailed component calculation.
Translate an expected current load into a margin check, then continue to cable-run and voltage-drop detail.
Apply duty and capacity assumptions to an equipment or weight-handling planning conversation.
Method and assumptions
Choose a compatible profile and unit, then enter the expected operating load and duty cycle.
The engine multiplies design load by safety factor and the additional allowance.
An optional rating produces margin and utilization. The on-screen values and both downloads use the same engine result.
Example
800 N design load
Illustrative only. Real designs may need dynamic loading, fatigue, environmental, material, installation, and code checks.
Design margin FAQ
It calculates design load from the operating load and duty cycle, then applies your safety factor and additional allowance to estimate a minimum required capacity.
No. The safety factor multiplies the design load; additional allowance then adds a percentage to that factored capacity. The tool displays both assumptions.
Yes. Add the available rating to see its margin against the calculated minimum and its operating utilization percentage.
General loads use N, kN, or lbf; torque uses N·m or lb-ft; electrical current uses A; and material weight uses kg or lb. Switching units converts compatible entered values.
No. It is a transparent planning calculation, not a code check, certified design, equipment approval, or professional engineering review.
Use the percentage of the stated operating load that represents the intended normal operating condition. Include transient, peak, and unusual load cases separately where they matter.
It means the entered rating meets the calculated minimum but is less than 10% above it. This is an alert to review the selected assumptions, not an approval.
It can help organize a load and capacity assumption, but motor selection requires additional checks such as starting current, speed, torque curve, temperature, and service conditions.
Yes. The CSV and JSON downloads use the same calculated result shown in the tool, including assumptions and status.
No. Calculations run in the browser and are not stored by Rigid Apps. Avoid entering sensitive project details.