When to use this calculator
Translate screw rotation into ideal axial travel rate. Use lead, which can differ from thread pitch on a multi-start screw.
Explore the gears, belts & motion calculators for other questions in this topic. For a related calculation, use the Open Belt Length Calculator: Estimate the pitch length of an open two-pulley belt.
PUTTING IT INTO PRACTICE
Lead Screw Linear Speed: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Screw lead per revolution (mm) | 5 |
| Rotational speed (rpm) | 600 |
| Result | 3,000 mm/min |
- Check the input labels and enter the example values above.
- Apply the relationship: Linear speed = lead × revolutions per minute.
- The result is 3,000 mm/min, rounded for display.
How to interpret your result
Use lead, which can differ from thread pitch on a multi-start screw.
Use compatible modules and effective pitch dimensions. No-slip and ideal-mesh assumptions omit losses and dynamics. A ratio calculation does not select a safe shaft, belt, bearing or gear rating.
Frequently asked questions
Why is a lead-screw lead different from its pitch?
Pitch is the axial distance between thread forms. A multi-start screw advances by pitch times the number of starts per revolution.
When is the lead screw linear speed calculator useful?
Translate screw rotation into ideal axial travel rate. Use lead, which can differ from thread pitch on a multi-start screw.
How do I use the lead screw linear speed calculator?
Enter screw lead per revolution (mm), rotational speed (rpm). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Linear speed = lead × revolutions per minute.
What should I check before using the result?
Use lead, which can differ from thread pitch on a multi-start screw.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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