And diameter pulleys are based on their own with a reduction ratio, according to the operating speed of the motor speed of their own design. Operating speed / motor speed = driven wheel diameter / driving wheel diameter * 0.98 (sliding coefficient), such as the use of steel as the material pulleys, require line speed of not more than 40m / S, such as the use of cast iron materials, require line speed is not high 35M / S, the motor speed with the belt diameter conversion ratio, speed ratio = output speed: speed = load input pulley pitch circle diameter: motor pulley pitch circle diameter. And the reference pitch diameter is the same diameter, the diameter of 2h = pitch diameter, h is the depth of the groove base line, different types of V-belt h is not the same, the base pitch circle diameter is the diameter of the pulley pitch line location theory, a bit like gear pitch diameter pulley Guangzhou factory, usually expressed by PD, OD OD expressed general use. conversion formula different groove pitch circle and outer circle is not the same, we generally easier to measure the outer pulley to pulley, A or the minimum outer diameter pulley SPA is 80mm Bushes, such as less than the dimension, in particular at high speed, the belt is prone to delamination and cracks and other illnesses bottom. SPZ belt, ferries can not be less than 63mm. Note also that the installation practices and tension the belt, too small and easy to slip, too much easy to damage the belt and bearings. Also with the national standard similar standard specifies a belt drive, V-belt and triangular ribbed belt and pulley groove selection, design specifications. Pulley pitch circle diameter is the diameter of the pulley section line location theory, a bit like the pitch diameter of the gear. Generally expressed by PD, OD OD expressed general use. Conversion formula different groove pitch circle and outer circle is not the same, in general we relatively easy to measure the belt pulley drive Hixih parts factory is a set of pulleys, couplings, and other transmission parts sleeve design, production as one of the modern machinery manufacturing enterprise, specializing in the production of international standard pulley (SPZ-belt pulley, SPA type Pulley, SPB-belt pulley, SPC-belt pulley, SPD-belt pulley), the national standard pulley (Z-belt pulley, A-type pulley, B-type pulley, C-type pulley, D-belt pulley, E-belt pulley), and foreign widely 3V type pulley pulley price, 5V-belt pulley, 8V-belt pulley and other specifications models of pulley; pulley various GB, American Standard pulleys, pulley European standard, Japanese standard pulleys, V-belt pulley, the pulley Single, dual pulleys, three groove pulley, multi-groove pulley, sheave, gray iron pulleys, cast iron pulleys, sheaves, motor pulley, large pulley, custom GB non-GB pulleys, customized special pulley. Guangzhou pulley manufacturers | Bang Hong Machinery (certified) | pulley provided by state-hung Machinery Co., Ltd. in Guangzhou. Hung Machinery Co., Ltd. Guangzhou state (www.gzbhjx.com) is Guangzhou, casting leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Hong Machinery leadership in the state with the staff warmly welcome all inquiries negotiations to create the state machinery hung a better future.