Products of Chongqing Xiexiang Machinery Manufacturing Co., Ltd.

　　Chongqing Xiexiang Machinery Manufacturing Co., Ltd. (formerly Chongqing Rujiji Machinery Manufacturing Co., Ltd.) is located in the Qinggang Industrial Park of Bishan District, Chongqing, just 2 kilometers from the Chengdu–Chongqing Expressway entrance, enjoying extremely convenient transportation access. Established in 2002, the company primarily manufactures and sells a wide range of motorcycle crankpins and automotive piston pins. With over a decade of specialized experience in producing motorcycle crankpins, the company occupies approximately 6 mu of land, with factory facilities spanning more than 3,000 square meters. It is equipped with over 80 pieces of production equipment, including high-precision centerless grinders, dedicated drilling machines, CNC chamfering machines, several CNC lathes, and dozens of other essential machining tools. As a professional manufacturer of motorcycle crankpins, the company has also invested in a comprehensive suite of testing instruments: a metallographic cutting machine, microscope, and hardness tester for analyzing heat-treated microstructures; as well as a roundness tester, projector, surface roughness meter, comparators, three‑coordinate measuring machine, and spectrometer to assess dimensional and geometric accuracy, and surface finish.

　　Chongqing Xiexiang Machinery Manufacturing Co., Ltd. is a company specializing in the production and sales of crankshaft pins. It is a crankshaft pin factory, manufacturer, and supplier based in Chongqing.

　　The crankshaft is a critical component of the engine. It receives forces transmitted from the connecting rods and converts them into torque, which it delivers to drive the engine’s auxiliary components. Subjected to the combined effects of centrifugal forces from rotating masses, cyclic gas‑induced inertial forces, and reciprocating inertial forces, the crankshaft experiences bending and torsional loads. Consequently, the crankshaft must possess adequate strength and stiffness, while its journal surfaces must exhibit wear resistance, uniform operation, and excellent balance.