... standards as ISO9001, ANSI, DIN and BS.ANSI B29-1 roller chain standard sizesSizePitchRoller diameterTensile strengthWorking load250.250 in ( ... (3,100 kg)1401.750 in (44.45 mm)1.000 in (25.40 mm)38,280 lb (17 ... (4,100 kg)1602.000 in (50.80 mm)1.125 in (28.58 mm)50,000 lb (23 ... (5,400 kg)1802.250 in (57.15 mm)1.460 in (37.08 mm)63,300 lb (28 ... (7,300 kg)2403.000 in (76.20 mm)1.875 in (47.63 mm)112,500 lb (51 ...