Qingdao Hengxin Transmission Co., Ltd., located in Qingdao, Shandong Province, is a manufacturer engaged in the development, production, and supply of transmission chains. The company’s core business covers agricultural machinery chains, motorcycle chains, industrial transmission chains, and custom drive chain solutions. Relying on a complete production process, it provides chain products for original equipment manufacturers, agricultural equipment repair markets, and motorcycle parts distributors.

The company’s transmission chain business is built around several key product areas. In agricultural applications, the chains are used in combine harvesters, corn harvesters, planters, tillage equipment, grain elevators, and conveyors. These chains are designed to withstand dusty and muddy environments, with hardened pins, bushings, and link plates to improve wear resistance and reduce early elongation. In motorcycle applications, the company supplies drive chains in different pitches and lengths for street motorcycles, off-road motorcycles, and small recreational vehicles. The manufacturing process controls hardness distribution so that link plates retain toughness while pins and bushings provide wear-resistant surfaces, balancing strength and impact resistance.

Production begins with incoming material inspection and continues through blanking, stamping, heat treatment, surface treatment, assembly, and final testing. Key quality indicators include chain pitch accuracy, chain length consistency, link plate thickness, riveting quality, flexibility, wear resistance, and tensile strength. Products are cleaned and rust-protected before packing to maintain condition during storage and transportation. For agricultural equipment repair customers, the company can confirm pitch and link plate dimensions from existing chain samples to reduce selection errors. For motorcycle parts channels, chain length recommendations can be made according to vehicle type and sprocket tooth count to simplify installation and adjustment.

In addition to standard products, the company offers custom chain lengths, different link plate thicknesses, surface treatments, and packaging options. It also provides sprocket matching guidance and technical support for chain selection. The business serves domestic agricultural machinery maintenance markets, complete equipment manufacturers, motorcycle parts distributors, and export customers.

Future development focuses on improving wear-resistant materials, precision assembly, surface coating processes, and inspection efficiency. Qingdao Hengxin Transmission Co., Ltd. continues to strengthen its transmission chain product range and support customers that require stable performance under heavy load, high speed, and harsh operating environments.