V-band classification (2)

V-band classification (2)

Narrow V band

The wedge angle (the angle between the two sides of V belt) is 40° and the relative height is 0.9. It is composed of the wrapping cloth layer, stretch glue layer, strength layer and compression rubber layer. The strength layer consists of a multi-layer rubberized cord or a single row of dip cords. With a ratio of the width of the top surface to the height of the belt of 1.1 to 1.2, the bandwidth is reduced by about 1/3 as compared with the conventional V-belt, so the lateral rigidity is large. With a bow-shaped top, the cord remains in alignment when subjected to force, so that the force is uniform and the function of each cord is fully exerted. The strong layer wire rope discharge position is slightly higher, with concave shapes on both sides, and a layer of oriented fiber film is placed between the strong layer and the compressed rubber layer. Due to its structural characteristics, the transmission capacity can be increased by 0.5 to 1.5 times that of ordinary V belts at the same speed. When the transmission power is the same, the structure of the narrow V-belt is reduced by 50% compared with the ordinary V-belt, and the service life is obviously extended. The limit speed can reach 40-50 m/s, and the transmission efficiency can reach 90%-97%. In addition, the use of a narrow V-belt makes it possible to shorten the transmission center distance and reduce the pulley width, which is widely used for various power transmissions.