Dongbo BL-Type Leaf Chain (Heavy Series)
The plate exterior is identical to that of the ANSI standard Roller Chain, but the plate thickness and the pin external diameter are identical to those of the Roller Chain One size larger.
The BL series is built to withstand heavy shock and is typically used for mining machines and construction equipment.
The plate exterior is identical to that of the ANSI Standard Roller Chain, but the plate thickness and the pin external diameter are identical to those of the Roller Chain one size larger.
Dong Bo Leaf chains consist of only simple Link plates held together by riveted pins for a high strength linkage. Combined with their greater tensile strength and directional flexibility, they find excellent applications, such as balance or counterweight, lift truck, fork lifts and other lifting machinery, which more at low speed.
| DONG BO Chain No. | Lacing | Pitch P | Plate | Pin | Breaking Load (Kgf) | Approx Weight Kg/m | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| T | H | S | D | L | DBC | A.N.S.I | ||||
| DBC BL-422 | 2×2 | 12.70 | 2.0 | 12.0 | 5.13 | 5.08 | 10.85 | 2,400 | 2,300 | 0.68 |
| DBC BL-423 | 2×3 | 12.70 | 2.0 | 12.0 | 5.13 | 5.08 | 12.95 | 2,400 | 2,300 | 0.84 |
| DBC BL-434 | 3×4 | 12.70 | 2.0 | 12.0 | 5.13 | 5.08 | 17.20 | 3,600 | 3,400 | 1.13 |
| DBC BL-444 | 4×4 | 12.70 | 2.0 | 12.0 | 5.13 | 5.08 | 19.41 | 4,800 | 4,500 | 1.28 |
| DBC BL-446 | 4×6 | 12.70 | 2.0 | 12.0 | 5.13 | 5.08 | 23.60 | 4,800 | 4,500 | 1.65 |
| DBC BL-466 | 6×6 | 12.70 | 2.0 | 12.0 | 5.13 | 5.08 | 27.80 | 7,100 | 6,800 | 1.96 |
| DBC BL-522 | 2×2 | 15.875 | 2.4 | 15.0 | 6.00 | 5.94 | 12.65 | 4,000 | 3,400 | 1.07 |
| DBC BL-523 | 2×3 | 15.875 | 2.4 | 15.0 | 6.00 | 5.94 | 15.10 | 4,000 | 3,400 | 1.27 |
| DBC BL-534 | 3×4 | 15.875 | 2.4 | 15.0 | 6.00 | 5.94 | 20.10 | 6,000 | 5,000 | 1.69 |
| DBC BL-544 | 4×4 | 15.875 | 2.4 | 15.0 | 6.00 | 5.94 | 22.56 | 8,000 | 6,800 | 1.89 |
| DBC BL-546 | 4×6 | 15.875 | 2.4 | 15.0 | 6.00 | 5.94 | 27.50 | 8,000 | 6,800 | 2.40 |
| DBC BL-566 | 6×6 | 15.875 | 2.4 | 15.0 | 6.00 | 5.94 | 32.45 | 12,000 | 10,200 | 2.80 |
| DBC BL-622 | 2×2 | 19.05 | 3.2 | 18.1 | 7.97 | 7.90 | 16.38 | 6,500 | 5,000 | 1.68 |
| DBC BL-623 | 2×3 | 19.05 | 3.2 | 18.1 | 7.97 | 7.90 | 19.75 | 6,500 | 5,000 | 2.04 |
| DBC BL-634 | 3×4 | 19.05 | 3.2 | 18.1 | 7.97 | 7.90 | 26.45 | 9,750 | 7,700 | 2.83 |
| DBC BL-644 | 4×4 | 19.05 | 3.2 | 18.1 | 7.97 | 7.90 | 29.80 | 13,000 | 10,000 | 3.18 |
| DBC BL-646 | 4×6 | 19.05 | 3.2 | 18.1 | 7.97 | 7.90 | 36.50 | 13,000 | 10,000 | 4.01 |
| DBC BL-666 | 6×6 | 19.05 | 3.2 | 18.1 | 7.97 | 7.90 | 43.20 | 19,500 | 15,000 | 4.73 |
| DBC BL-822 | 2×2 | 25.40 | 4.0 | 24.1 | 9.57 | 9.48 | 20.17 | 10,500 | 8,600 | 2.59 |
| DBC BL-823 | 2×3 | 25.40 | 4.0 | 24.1 | 9.57 | 9.48 | 24.20 | 10,500 | 8,600 | 3.20 |
| DBC BL-834 | 3×4 | 25.40 | 4.0 | 24.1 | 9.57 | 9.48 | 32.55 | 15,800 | 13,200 | 4.44 |
| DBC BL-844 | 4×4 | 25.40 | 4.0 | 24.1 | 9.57 | 9.48 | 36.90 | 19,400 | 17,300 | 5.04 |
| DBC BL-846 | 4×6 | 25.40 | 4.0 | 24.1 | 9.57 | 9.48 | 45.00 | 19,400 | 17,300 | 6.32 |
| DBC BL-866 | 6×6 | 25.40 | 4.0 | 24.1 | 9.57 | 9.48 | 53.30 | 29,200 | 25,900 | 7.54 |
| DBC BL-1022 | 2×2 | 31.75 | 4.8 | 30.1 | 11.14 | 11.04 | 23.98 | 14,400 | 11,800 | 3.76 |
| DBC BL-1023 | 2×3 | 31.75 | 4.8 | 30.1 | 11.14 | 11.04 | 28.90 | 14,400 | 11,800 | 4.69 |
| DBC BL-1034 | 3×4 | 31.75 | 4.8 | 30.1 | 11.14 | 11.04 | 38.85 | 22,000 | 18,600 | 6.55 |
| DBC BL-1044 | 4×4 | 31.75 | 4.8 | 30.1 | 11.14 | 11.04 | 43.39 | 28,000 | 23,600 | 7.48 |
| DBC BL-1046 | 4×6 | 31.75 | 4.8 | 30.1 | 11.14 | 11.04 | 53.70 | 28,800 | 23,600 | 9.29 |
| DBC BL-1066 | 6×6 | 31.75 | 4.8 | 30.1 | 11.14 | 11.04 | 63.85 | 43,200 | 35,500 | 11.16 |
| DBC BL-1222 | 2×2 | 38.10 | 5.6 | 36.2 | 12.74 | 12.64 | 28.04 | 19,000 | 15,500 | 4.83 |
| DBC BL-1223 | 2×3 | 38.10 | 5.6 | 36.2 | 12.74 | 12.64 | 33.90 | 19,000 | 15,500 | 6.54 |
| DBC BL-1234 | 3×4 | 38.10 | 5.6 | 36.2 | 12.74 | 12.64 | 45.50 | 30,500 | 25,000 | 9.10 |
| DBC BL-1244 | 4×4 | 38.10 | 5.6 | 36.2 | 12.74 | 12.64 | 51.30 | 38,000 | 30,900 | 10.39 |
| DBC BL-1246 | 4×6 | 38.10 | 5.6 | 36.2 | 12.74 | 12.64 | 62.95 | 38,000 | 30,900 | 12.01 |
| DBC BL-1266 | 6×6 | 38.10 | 5.6 | 36.2 | 12.74 | 12.64 | 74.57 | 57,000 | 46,400 | 14.58 |
| DBC BL-1422 | 2×2 | 44.45 | 6.4 | 42.2 | 14.32 | 14.21 | 31.62 | 24,000 | 19,500 | 7.31 |
| DBC BL-1423 | 2×3 | 44.45 | 6.4 | 42.2 | 14.32 | 14.21 | 38.20 | 24,000 | 19,500 | 9.06 |
| DBC BL-1434 | 3×4 | 44.45 | 6.4 | 42.2 | 14.32 | 14.21 | 51.40 | 39,500 | 32,300 | 11.32 |
| DBC BL-1444 | 4×4 | 44.45 | 6.4 | 42.2 | 14.32 | 14.21 | 58.05 | 48,000 | 39,100 | 12.96 |
| DBC BL-1446 | 4×6 | 44.45 | 6.4 | 42.2 | 14.32 | 14.21 | 71.25 | 48,000 | 39,100 | 18.00 |
| DBC BL-1466 | 6×6 | 44.45 | 6.4 | 42.2 | 14.32 | 14.21 | 84.46 | 72,000 | 59,100 | 22.51 |
| DBC BL-1622 | 2×2 | 50.80 | 7.2 | 48.2 | 17.49 | 17.38 | 35.59 | 36,000 | 29,500 | 9.84 |
| DBC BL-1623 | 2×3 | 50.80 | 7.2 | 48.2 | 17.49 | 17.38 | 43.25 | 36,000 | 29,500 | 12.16 |
| DBC BL-1634 | 3×4 | 50.80 | 7.2 | 48.2 | 17.49 | 17.38 | 58.40 | 56,500 | 45,000 | 16.95 |
| DBC BL-1644 | 4×4 | 50.80 | 7.2 | 48.2 | 17.49 | 17.38 | 65.86 | 72,000 | 59,100 | 18.97 |
| DBC BL-1646 | 4×6 | 50.80 | 7.2 | 48.2 | 17.49 | 17.38 | 81.05 | 72,000 | 59,100 | 24.09 |
| DBC BL-1666 | 6×6 | 50.80 | 7.2 | 48.2 | 17.49 | 17.38 | 96.15 | 108,100 | 88,600 | 28.73 |
| DBC BL-2022 | 2×2 | 63.50 | 9.5 | 60.3 | 23.84 | 23.73 | 47.94 | 54,000 | 44,300 | 14.43 |
| DBC BL-2023 | 2×3 | 63.50 | 9.5 | 60.3 | 23.84 | 23.73 | 57.90 | 54,100 | 44,300 | 17.95 |
| DBC BL-2034 | 3×4 | 63.50 | 9.5 | 60.3 | 23.84 | 23.73 | 77.82 | 81,100 | 66,400 | 24.95 |
| DBC BL-2044 | 4×4 | 63.50 | 9.5 | 60.3 | 23.84 | 23.73 | 87.78 | 108,200 | 88,600 | 28.45 |
| DBC BL-2046 | 4×6 | 63.50 | 9.5 | 60.3 | 23.84 | 23.73 | 107.70 | 108,200 | 88,600 | 35.44 |
| DBC BL-2066 | 6×6 | 63.50 | 9.5 | 60.3 | 23.84 | 23.73 | 127.62 | 162,300 | 133,000 | 42.01 |
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