AutoEngCalc - Engineering Calculators

Belt Drive Calculator

Design flat and V-belt drives: calculate length, center distance, tensions, power capacity from power, pulleys and speeds.

Belt Length
2850 mm
For 500mm centers, 200/400mm pulleys

Flat & V-Belt Design

Featured: Open/Crossed Drive, Tension Ratio, Power Capacity

Power Capacity: Flat vs V-Belt

Standard configuration without crossing.

L = 2C + π(D + d)/2 + (D - d)^2 / (4C)
θ = π - 2sin⁻¹((D - d)/(2C))

Crossed for reverse rotation.

L = 2C + π(D + d)/2 + (D + d)^2 / (4C)
θ = π + 2sin⁻¹((D + d)/(2C))

Enter parameters and click Calculate

Belt Drive Guidelines

Flat Belt

Simple, high speed, low torque.

V-Belt

Higher grip, wedge effect, multiple belts.

Key Formulas

Length, wrap angle, tension ratio, power.

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