... on bicycles, motorcycles, machinery. ANSI B29-1 roller chain standard sizesSizePitchRoller diameterTensile strengthWorking load250.250 (6. ... kg)1602.000 in (50.80 mm)1.125 in (28.58 mm)50,000 lb (23,000 ... kg)11,900 lb (5,400 kg)1802.250 in (57.15 mm)1 ... (6,200 kg)2002.500 in (63.50 mm)1.562 in (39.67 mm)78,000 lb ... -23 21:14:11 Roller Chain or Bush Roller Chain With ISO9001:2000 Approved