The belt drives are usually classified into the following three groups:
1. Light drives. These are used to transmit small powers at belt speeds upto about 10 m/s,as in agricultural machines and small machine tools.
2. Medium drives. These are used to transmit medium power at belt speeds over 10 m/sbut up to 22 m/s, as in machine tools.
3. Heavy drives. These are used to transmit large powers at belt speeds above 22 m/s, asin compressors and generators.
