Qingdao Hengxin Transmission Co., Ltd. is a professional manufacturer and supplier engaged in the development, production, and sales of chains. The company has built its business around three core product lines: transmission chains, agricultural machinery chains, and motorcycle chains, serving industrial automation, agricultural equipment, motorcycle assembly, and aftermarket applications.

Transmission Chain Business

The transmission chain range includes roller chains, bush chains, silent chains, leaf chains, and various non-standard conveyor chains. Products are manufactured from high-quality alloy steel and undergo heat treatment and surface treatment to improve wear resistance, tensile strength, and fatigue life. These chains are widely used in packaging machinery, conveying equipment, hoisting machinery, food machinery, and general industrial equipment. Depending on operating conditions, the company can customize pitch, strand number, attachment type, and chain length, and supply matching sprockets to ensure engagement accuracy and smooth power transmission.

Agricultural Machinery Chain Business

Agricultural chains mainly serve combine harvesters, planters, balers, silage machines, grain conveyors, and fertilizer equipment. Because agricultural operations involve heavy dust, frequent load changes, and contact with mud and moisture, the company strengthens agricultural chains through material selection, heat treatment, and sealing design to improve wear resistance, shock resistance, and corrosion protection. The product range includes standard roller chains, double-pitch conveyor chains, heavy-duty agricultural chains, and special chains with scrapers, pushers, or extended pins. Chain and sprocket sets are available to support both original equipment manufacturers and replacement markets, helping reduce field downtime.

Motorcycle Chain Business

Motorcycle chain products cover standard roller chains, sealed ring chains, and heavy-duty chains. Common specifications such as 420, 428, 520, 525, and 530 can be selected according to engine displacement and vehicle type. Standard roller chains suit light motorcycles, sealed ring chains retain internal grease and reduce dust and water ingress, and heavy-duty chains provide greater plate thickness and pin strength for large-displacement, off-road, and heavy-load models. The company also provides matching motorcycle sprockets. Proper chain and sprocket tooth profile matching reduces transmission noise and improves power delivery efficiency and service life.

Quality Control and Services

The company applies full-process control from raw material inspection, punching, heat treatment, and assembly to final testing, including batch inspection of chain length accuracy, pin torque, wear performance, and breaking load. It supports sample confirmation, small-batch trial production, and volume orders, and can develop special specifications based on customer drawings or samples. Pre-sales support includes selection calculation and installation recommendations, while after-sales support covers usage feedback and guidance on chain tensioning and lubrication.

Through its focused layout in transmission chains, agricultural machinery chains, and motorcycle chains, Qingdao Hengxin Transmission Co., Ltd. provides reliable chain solutions for equipment manufacturers and end users.