A multi-rib V-belt features multiple longitudinal ribs in a “V” shape, which ensures better grip and reduces belt slippage. The belt’s design is essentially a combination of a flat belt and a V-belt. This design allows for an even distribution of load, greater flexibility, and high transmission ratios.

Classification of POLY-V belts by pitch
The rib pitch is the distance (in mm) between the tops of two adjacent ribs.