Also known as multi-slot, multi-groove band, multi-wedge belt, mainly used in engines, motors and other power transmission equipment. Types: PH, PJ, PK, PL, PM.

Ribbed advantages are: the contact area ribbed belts and pulleys and larger friction load more evenly distributed along the bandwidth, greater transmission capacity; belt body thin and light, flexible, reasonable structure, so work stress small, can work on smaller pulley; also has a drive vibration, heat fast, smooth operation, the use of small elongation, transmission ratio and limit lines and high speed, thus longer life; significant energy savings, high transmission efficiency ; drive compact, small footprint. Ribbed particularly suitable for structural requirements of compact, high-speed transmission power transmission.