V-belt drive selection
Power + speed + pulleys → design power, belt speed, number of belts (service factor).
How to use
- Enter the calculation conditions
Enter the dimensions, loads, speeds or operating conditions requested by the form.
- Run the calculation
The tool applies the formulas shown on this page to the entered values.
- Review the result
Review the resulting specification and checks, then verify them against the cited source, current standard and real operating conditions before use.
Core formula
i = d₂/d₁; v = π · d₁ · n₁ / 60,000
Example using default values
i = 250/125; v = π · 125 · 1,450 / 60,000 → i = 2; v = 9.5 m/s
Source: Bando / Gates / Mitsuboshi V-belt selection handbooks.
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