- Classical V-belts
defined in terms of dimensions in standards such as ISO 4184, Din 2215, BS 3790, ANSI/RMA IP-20 etc. The ratio of the top width to the height of the sections is approx. 1.6.
- Narrow V-belts
The top width of the section is often bevelled to facilitate adaptation to minor deviations from the standard for pulley groove dimension. The ratio of the top width to the height of the
sections is approx. 1.2. Hence the term narrow V-belts, as seen in relation to classical V-belts.
defined in terms of dimensions in standards such as ISO 4184,