ABSTRACT
V-belts and fan belts are the generic names given to power transmission belts having V-shaped friction power transmitting sides. V-belts are made of materials from three groups, namely, rubber, cord, and canvas. Chloroprene rubber is mainly used as the rubber material, but natural rubber and styrene butadiene rubber have been used for conventional wrapped V-belts for general industrial use. V-belt cords are required to have excellent dimensional stability, low stress relaxation, and high fatigue resistance. Rubber material for V-belts is usually sheeted by a calender or extruder. Sheeting of compounds containing no short fibers is the same as for other rubber goods. V-belt stress concentration in the pulley appears in the underlying rubber area of the cord near the belt sides, and the growth of cracks from this area is one of the factors determining belt life. The importance of comprehensive manufacturing technology for V-belts developed for industrial use, and fan belts.
