... mechanical power on bicycles, motorcycles, machinery. ANSI B29-1 roller chain standard sizesSizePitchRoller diameterTensile strengthWorking load250.250 (6.35 )0.130 ... )500.625 in (15.88 mm)0.400 in (10.16 mm)4,880 lb (2,210 kg)1,430 ... ,072 lb (2,301 kg)1201.500 in (38.10 mm)0.875 in (22.23 mm)28,100 lb ... 22,250 lb (10,090 kg)Update Date:2011-6-23 21:14:11 Roller Chain or Bush Roller Chain With ISO9001:2000 ...