DONGHUA ASA 40/2 roller chain

DONGHUA ASA 40/2 belongs to roller chain, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for ASA 40/2 and any equivalents.

The DONGHUA ASA 40/2 is a double-strand roller chain built to the ASA/ANSI standard. It is designed to transmit motion between parallel shafts where a single chain line must carry more load, making it a practical choice for gearboxes, conveyors and synchronized drives. MR Industrial Accessories supplies this chain to maintenance and purchasing teams across the United States and Latin America.

The 40/2 designation tells you two things: the 40 series corresponds to a 12.7 mm pitch, and the /2 means two rows of rollers joined by common pins. The roller diameter and inner width are both 7.95 mm. The plates and rollers are carbon steel. With two strands, the chain offers roughly twice the tensile capacity of a simplex chain of the same pitch, so it can replace two parallel single-strand drives with one line.

Typical uses include machine tool transmissions, belt and roller conveyors, mixers, compressors and packaging equipment. It also appears in gearboxes and gear cases where axial space is tight but torque demand is high. When two simplex chains are currently running side by side, switching to one ASA 40/2 often simplifies assembly and alignment.

Selecting the right chain starts with the power to transmit, the sprocket speed and the number of teeth. The sprockets must be compatible with a 12.7 mm pitch and a double strand. Check shaft alignment and tension: too tight and the rollers and bushings wear faster; too loose and the chain can skip. Lubricate according to your operating conditions and inspect for elongation at regular intervals.

To request a quote, send the full part number DONGHUA-ASA-40-2 by WhatsApp or email. If you need an equivalent, include the pitch, inner width and roller diameter. Our team can suggest a compatible chain from the same series or another brand, and advise whether your application calls for simplex, triplex or a different pitch.

If the designation is unclear, a photo of the old chain or caliper measurements is enough for us to confirm the correct part. We reply promptly and help you avoid buying the wrong chain.