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, 5V-belt pulley, 8V-belt pulley, and other standard models of the pulley; pulley various GB, American standard pulley pulleys, pulley European standard, Japanese standard pulleys, V-belt pulley, the pulley Single, dual pulley, three slots pulley, multi-groove pulley, sheave pulley factory in Guangzhou, gray iron pulleys, cast iron pulleys, sheaves, motor pulley, large pulley, custom GB non-GB pulleys, customized special pulley. By modeling the appearance of mixed materials and other technology equipment manufacturing modeling process is called modeling. Many types of molding method, it depends on the pulley, Bushes, large pulley casting shapes, sizes and technologies. The following brief classification. A modeling method divided by hand shapes and hand-shape molding machine operating flexibility, adaptability, but the yield is low, inconsistent quality, suitable for small quantities of Bushes, large pulley production. Machine molding production workload ready, requiring a simple pulley casting shape, suitable for high-volume, high-yield, quality and stability. Category 2 in accordance with the appearance of mold-like shape and have a real blade shape is kind mold shape molding consumes more time and materials shelf pulley, but the style is simple, easy casting size Yasumasa; blade shape molding is simple, economical, but modeling complex operation, only suitable for single or small batch production pulley. 3 fixed way of divided mold sand pit modeling and modeling of large pulley generally use more sandbox modeling castings supplier pulleys, easy mold flip and handling, in case of special circumstances, you can pit modeling. 4 Press the sand is divided drying wet, dry and dry surface dry strength, good air permeability, but adds a drying procedures for casting higher, the Bushes castings. Actual production, how to choose what kind of modeling method, according to the casting material, size, structure, production volume, the quality requirements of the casting and the economy to be considered. Sheave pulley _ _ hung state machinery provided by the state-hung Machinery Co., Ltd. in Guangzhou. Hung Machinery Co., Ltd. Guangzhou state (www.gzbhjx.com) strong, credible, in Guangzhou casting industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the state machinery and you work hung into the brilliant, for a better future!