V-Belt Selection Calculator

Calculate V-belt power rating, required number of belts, and belt life for industrial drive systems.

Power to be transmitted.
kW
Normal: 1.0, Moderate shock: 1.2, Heavy: 1.4-1.8.
Per-belt power rating from manufacturer tables.
kW/belt
Pitch diameter of the smaller sheave.
mm
Pitch diameter of the larger sheave.
mm
Distance between sheave centers.
mm

Results

Design Power (with SF)-kW
Number of Belts Required-
Speed Ratio-
Belt Pitch Length-mm
Small Sheave Wrap-degrees
References: ISO 1081; Gates/Continental V-Belt Design Manual