Double Heavy Duty Roller Chain 

Chain size	Pitch P (mm)	Roller diameter d1 max (mm)	Width between inner plates b1 min (mm)	Pin diameter d2 max (mm)	Pin length L max (mm)	Pin length Lc max (mm)	Inner plate depth h2 max (mm)	Plate thickness T max (mm)	Transverse pitch Pt (mm)	Tensile strength Q min (kN/lbf)	Average tensile strength Q0 (kN)
60H-2	19.050	11.91	12.57	5.94	55.3	57.1	18.00	3.25	26.11	63.6/14455	84.5
80H-2	25.400	15.88	15.75	7.92	68.8	70.3	24.00	4.00	32.59	113.4/25773	145.3
100H-2	31.750	19.05	18.90	9.53	82.7	86.0	30.00	4.80	39.09	177.0/40227	225.9
120H-2	38.100	22.23	25.22	11.10	102.4	106.4	35.70	5.60	48.87	254.0/57727	322.7
140H-2	44.450	25.40	25.22	12.70	109.8	114.4	41.00	6.40	52.20	344.8/78364	437.7
160H-2	50.800	28.58	31.55	14.27	130.1	134.9	47.80	7.20	61.90	455/103091	571.6
180H-2	57.150	35.71	35.48	17.46	146.5	155.6	53.60	8.00	69.16	562/127726	680.0
200H-2	63.500	39.68	37.85	19.85	164.9	171.8	60.00	9.50	78.31	707.6/160818	894.9
240H-2	76.200	47.63	47.35	23.81	212.6	223.1	72.30	12.70	101.22	1000/227270	1200.0