American Standard Roller Chain

American Standard chains commonly known as ASA chains.
Currently we stock a range of transmission roller chains from ASA25 (1/4" Pitch) through to ASA200 (2 1/2" Pitch) in simplex, duplex and triplex.  Con links and half links are also available.

Along with the standard chains, we also offer multi strand chains for the logging industry.  This includes 4 strand, 5 stand and 6 strand to suit ASA50 - ASA120

All chains have gone through Donghua's testing systems and qualitiy control facilities manufactured to the ISO (International Standards) ANSI, BS, DIN and JIS standards. 

Donghua not only do the standard roller chain but they also offer heavy roller chain or HSP chain (Heavy Super Power roller chain) - Spec sheets and info sheets for HSP are below.  These chains are specific for Agricultural machinery but have also been used in many other high intensity running applications. Listed below are the simplex dimensions but for duplex/triplex or multi-strand options please consult our PDF's or feel free to get into contact. 

American Transmission roller chain


Name Pitch Roller Diameter Width between inner plates Pin Diameter Pin Length Pin Length Plate Thickness Average Tensile Strength ANSI Chain Number Inner Plate Depth Enquire
P d1 max b1 min d2 max L max Lc max T max Qo h2 max
mm mm mm mm mm mm mm kN mm
ASA25-1 6.350mm 3.30mm 3.18mm 2.31mm 7.90mm 8.40mm 0.80mm 4.6 25 6.00mm Enquire
ASA35-1 9.525mm 5.08mm 4.77mm 3.58mm 12.40mm 13.17mm 1.30mm 10.8 35 9.00mm Enquire
ASA40-1 12.700mm 7.95mm 7.85mm 3.96mm 16.60mm 17.80mm 1.50mm 17.5 40 12.00mm Enquire
ASA41-1 12.700mm 7.77mm 6.25mm 3.58mm 13.75mm 15.00mm 1.30mm 12.6 41 9.91mm Enquire
ASA50-1 15.875mm 10.16mm 9.40mm 5.08mm 20.70mm 22.20mm 2.03mm 29.4 50 15.09mm Enquire
ASA60-1 19.050mm 11.91mm 12.57mm 5.94mm 25.90mm 27.70mm 2.42mm 41.5 60 18.00mm Enquire
ASA80-1 25.400mm 15.88mm 15.75mm 7.92mm 32.70mm 35.00mm 3.25mm 69.4 80 24.00mm Enquire
ASA100-1 31.750mm 19.05mm 18.90mm 9.53mm 40.40mm 44.70mm 4.00mm 109.2 100 30.00mm Enquire
ASA120-1 38.100mm 22.23mm 25.22mm 11.10mm 50.30mm 54.30mm 4.80mm 156.3 120 35.70mm Enquire
ASA140-1 44.450mm 25.40mm 25.22mm 12.70mm 54.40mm 59.00mm 5.60mm 212.0 140 41.00mm Enquire
ASA160-1 50.800mm 28.58mm 31.55mm 14.27mm 64.80mm 69.60mm 6.40mm 278.9 160 47.80mm Enquire
ASA200-1 63.500mm 39.68mm 37.85mm 19.85mm 80.30mm 87.20mm 8.00mm 431.6 200 60.00mm Enquire