Low transmission efficiency is an inherent drawback of V-belts, which is related to their basic structural form. Improving design and usage conditions can only alleviate this problem, making it difficult to fundamentally solve it and achieve satisfactory results. V-belts have been basically phased out in industrialized countries and replaced by narrow V-belts and other new types of belts. China's new machinery and equipment have also gradually changed V-belt transmission to narrow V-belts. Narrow V-belt transmission has the advantages of high transmission power, small transmission size, high allowable belt speed, high efficiency, long service life, and energy conservation, and has been widely used in various high-speed, medium, and high-power machinery.
