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BL series heavy-duty leaf chain has link plates of the same countour and pitch as the corresponding ANSI standard roller chain. The thickness of the plates is the same as the next larger pitch ANSI standard roller chain. Dimensions are given in inches.
Dimensions<!--Leaf Chains AL and BL Series-->
Unit of Measure
1 2 

Item #

Pitch (P)

Lacing

Pin Length (L)

Link Plate Height (H)

Link Plate Thickness (T)

Pin Diameter (E)

Avg. Ultimate Strength

BL423 N/A .500 N/A 2 x 3
N/A 0.498 N/A 0.475 N/A 0.079 N/A 0.200 N/A 5,960 lb
BL434 N/A .500 N/A 3 x 4
N/A 0.665 N/A 0.475 N/A 0.079 N/A 0.200 N/A 8,930 lb
BL444 N/A .500 N/A 4 x 4
N/A 0.750 N/A 0.475 N/A 0.079 N/A 0.200 N/A 11,910 lb
BL446 N/A .500 N/A 4 x 6
N/A 0.915 N/A 0.475 N/A 0.079 N/A 0.200 N/A 11,910 lb
BL466 N/A .500 N/A 6 x 6
N/A 1.110 N/A 0.475 N/A 0.079 N/A 0.200 N/A 17,870 lb
BL522 N/A 0.625 N/A 2 x 2
N/A 0.480 N/A 0.594 N/A 0.093 N/A 0.234 N/A 9,380 lb
BL523 N/A 0.625 N/A 2 x 3
N/A 0.582 N/A 0.594 N/A 0.093 N/A 0.234 N/A 9,380 lb
BL534 N/A 0.625 N/A 3 x 4
N/A 0.777 N/A 0.594 N/A 0.093 N/A 0.234 N/A 14,120 lb
BL544 N/A 0.625 N/A 4 x 4
N/A 0.880 N/A 0.594 N/A 0.093 N/A 0.234 N/A 18,750 lb
BL546 N/A 0.625 N/A 4 x 6
N/A 1.069 N/A 0.594 N/A 0.093 N/A 0.234 N/A 18,750 lb
BL566 N/A 0.625 N/A 6 x 6
N/A 1.300 N/A 0.594 N/A 0.093 N/A 0.234 N/A 28,120 lb
BL622 N/A .750 N/A 2 x 2
N/A 0.630 N/A 0.713 N/A 0.125 N/A 0.312 N/A 14,450 lb
BL623 N/A .750 N/A 2 x 3
N/A 0.786 N/A 0.713 N/A 0.125 N/A 0.312 N/A 14,450 lb
BL634 N/A .750 N/A 3 x 4
N/A 1.050 N/A 0.713 N/A 0.125 N/A 0.312 N/A 22,050 lb
BL644 N/A .750 N/A 4 x 4
N/A 1.182 N/A 0.713 N/A 0.125 N/A 0.312 N/A 29,110 lb
BL646 N/A .750 N/A 4 x 6
N/A 1.446 N/A 0.713 N/A 0.125 N/A 0.312 N/A 29,110 lb
BL666 N/A .750 N/A 6 x 6
N/A 1.680 N/A 0.713 N/A 0.125 N/A 0.312 N/A 43,660 lb
BL822 N/A 1.000 N/A 2 x 2
N/A 0.780 N/A 0.950 N/A 0.157 N/A 0.375 N/A 23,160 lb
BL823 N/A 1.000 N/A 2 x 3
N/A 0.965 N/A 0.950 N/A 0.157 N/A 0.375 N/A 23,160 lb
BL834 N/A 1.000 N/A 3 x 4
N/A 1.290 N/A 0.950 N/A 0.157 N/A 0.375 N/A 34,180 lb
BL844 N/A 1.000 N/A 4 x 4
N/A 1.420 N/A 0.950 N/A 0.157 N/A 0.375 N/A 46,310 lb
BL846 N/A 1.000 N/A 4 x 6
N/A 1.780 N/A 0.950 N/A 0.157 N/A 0.375 N/A 46,310 lb
BL866 N/A 1.000 N/A 6 x 6
N/A 2.070 N/A 0.950 N/A 0.157 N/A 0.375 N/A 66,150 lb
BL1023 N/A 1.250 N/A 2 x 3
N/A 1.133 N/A 1.189 N/A 0.189 N/A 0.437 N/A 33,080 lb
BL1034 N/A 1.250 N/A 3 x 4
N/A 1.523 N/A 1.189 N/A 0.189 N/A 0.437 N/A 49,620 lb
Unit of Measure
1 2