Bushes are a new type of mechanical transmission coupling member European countries commonly used supply Bushes, by 8 givers cone pulley cone clamping connection, making transmission parts centering accuracy is greatly improved. Drogue size standard design for the series. Its inner hole keyway according to ISO standards process. Interchangeability good versatility for a variety of occasions. When the transmission parts for a long time after the operation, the hole and chain groove damage may occur, if you are using this transmission parts Bushes selection drogue, this happens When, just replace the same specification can be restored using a drogue. Thus greatly improving the transmission parts life, reduce maintenance costs Bushes and save time. Large pulleys, Bushes cast only after the final inspection process to meet the requirements of its conclusions, this requirement to load test procedures and technical specifications, and one of its content is not allowed the casting defect types, the emergence of degree Bushes price, even testing and methods are also included in the specification. Bushes test is based on the quality of castings; casting Figure casting process documents, relevant standards and technical conditions of delivery and acceptance of casting. Bushes into casting casting quality and appearance quality internal quality castings. Casting appearance quality including; casting dimensional tolerances, surface roughness of casting, casting weight tolerances, Riser residual amount, casting welding quality and surface defects; intrinsic quality cast including; mechanical properties of casting and chemical properties, chemical composition, microstructure organization, internal defects. In addition, the cast also includes the relevant standards or technical delivery conditions required by a variety of special physical and chemical properties. According to a large pulley, Bushes casting quality test results, usually cast into three categories; qualified products, rework and waste. Qualified means that the quality and appearance of the intrinsic quality of the casting line with the relevant standards or delivery acceptance criteria; rework refers to the quality and appearance of the intrinsic quality of the casting does not meet the relevant standards or delivery acceptance conditions, but allows repair after repair up to standard casting and delivery acceptance conditions; no rework and rework later still up to standard and acceptance of casting conditions. Casting quality test methods, depending on the scale of production of castings, production methods, the importance of casting, casting process maturity and stability, and test items can take full inspection and sampling of two different test methods. Supply Bushes Bushes _ _ 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!