SEED Guides Belt Drive Performance >

Estimates of belt speed and speed ratio can be used as shown below to make an initial Selection of the type of belt required.

If a constant speed ratio is important, use a Toothed belt

if belt speed < 30 m/s, use a Vee belt

if belt speed < 40 m/s and,
- speed ratio < 7:1, use a Vee belt
- speed ratio < 8:1, use a Wedge belt

otherwise,
if speed ratio > 8:1 or belt speed > 40 m/s, use a Flat belt