Double pitch transmission chains

Double pitch transmission chains, designed and manufactured in strict compliance with GB/T 5269-2008 and ISO 1275:2006 standards. Derived from short-pitch precision roller chains, it features a pitch exactly twice that of the base chain while maintaining identical core interchangeable dimensionsISO. It is categorized into two main series: the transmission type, equipped with lightweight figure-eight concave side plates to minimize self-weight and inertial impact; and the conveyor type, featuring straight side plates that facilitate the installation of various attachments, catering to both power transmission and material conveying applications.

Crafted from high-quality alloy steel, the chain undergoes high-precision stamping, vacuum heat treatment, and surface strengthening processes, with critical component machining accuracy controlled within ±0.01mm. The roller and bushing adopt a rolling friction structure, reducing wear by over 50% and extending the service life by 1-2 times compared to conventional chains. Its lightweight design reduces energy loss by approximately 18.7% and vibration amplitude by 23.4% during high-speed operation, making it ideal for industrial scenarios requiring long transmission center distances, moderate power transmission, and low operating speeds.

Covering a full range of standard specifications from 208A/B to 232B with a pitch range of 25.4mm to 101.6mm, the product offers customizable configurations such as single/double-hole offset links, single/double-sided attachments, and extended pins. Special material options including stainless steel and dacromet anti-corrosion coating are available to adapt to harsh working conditions such as humidity and acid-base environments. All chains undergo preloading and precision testing before leaving the factory, ensuring that pitch cumulative deviation, tensile strength, and other key indicators fully meet standard requirements. They are compatible with sprockets ranging from 5 to 75 teeth (preferred teeth numbers: 7, 9, 10, 11, etc.), enabling precise meshing with sprockets for smooth, jam-free operation.

Widely used in CNC machine tool feed systems, packaging machinery, conveyor lines, agricultural machinery, and automotive manufacturing auxiliary lines, this chain not only meets the precision requirements of power transmission but also delivers high efficiency in material conveying. It is a cost-effective solution for medium-to-low speed, long-distance transmission applications.