Poly-V Belt is a single continuous Belt, used to drive multiple peripheral devices in a drive such as an alternator, power steering pump, water pump, air conditioning compressor and air pump. Poly-V Belts, can be described as flat cord-reinforced transmission Belts with length-wise running triangular-shaped ribs with a top angle of 40 degree. This construction of the Poly-V Belt leads to better support for all cords in the reinforcement and therefore an even load distribution is achieved. Poly-V Belt may also be guided by an idler pulley or a Belt tensioner.
Poly-V Belt drive consumes less space, by using a single wider Poly-V Belt instead of a multiple standard Belts, the Belt may be put under increased tension without stretching. Higher tension reduces slip, which increases the Belt life and mechanical efficiency.