12B-2 roller chain sprockets are manufactured for metric 12B-2 roller chain and are manufactured in accordance with ISO, DIN, and BS228/3 standards. Our sprockets are precision manufactured from high-quality steel, directly interchange with other manufactures, and are engineered for superb performance and durability. Common styles of these sprockets include B-Hub, C-Hub, and taper bushed type but others are available upon request.
12B-2 B-Hub Sprockets:
| Sprocket Size | Tooth Count | Pitch Diameter | Stock Bore | Maximum Bore | Hub Diameter (H) | Length Thru Bore (L) | Sprocket Weight (kg) |
|---|---|---|---|---|---|---|---|
| D12B11 | 11 | 67.62mm | 16mm | 32mm | 47mm | 50mm | 1.00 |
| D12B12 | 12 | 73.60mm | 16mm | 36mm | 53mm | 50mm | 1.23 |
| D12B13 | 13 | 79.60mm | 16mm | 38mm | 59mm | 50mm | 1.41 |
| D12B14 | 14 | 85.61mm | 16mm | 42mm | 65mm | 50mm | 1.68 |
| D12B15 | 15 | 91.63mm | 16mm | 45mm | 71mm | 50mm | 1.95 |
| D12B16 | 16 | 97.65mm | 20mm | 51mm | 77mm | 50mm | 2.27 |
| D12B17 | 17 | 103.67mm | 20mm | 54mm | 83mm | 50mm | 2.63 |
| D12B18 | 18 | 109.70mm | 20mm | 60mm | 89mm | 50mm | 3.18 |
| D12B19 | 19 | 115.74mm | 20mm | 62mm | 95mm | 50mm | 3.50 |
| D12B20 | 20 | 121.78mm | 20mm | 64mm | 100mm | 50mm | 3.72 |
| D12B21 | 21 | 127.82mm | 20mm | 64mm | 100mm | 50mm | 4.31 |
| D12B22 | 22 | 133.86mm | 20mm | 64mm | 100mm | 50mm | 4.77 |
| D12B23 | 23 | 139.90mm | 20mm | 73mm | 110mm | 50mm | 4.99 |
| D12B24 | 24 | 145.95mm | 20mm | 73mm | 110mm | 50mm | 5.45 |
| D12B25 | 25 | 151.99mm | 20mm | 80mm | 120mm | 50mm | 5.67 |
| D12B26 | 26 | 158.04mm | 20mm | 80mm | 120mm | 50mm | 6.13 |
| D12B27 | 27 | 164.09mm | 20mm | 80mm | 120mm | 50mm | 6.49 |
| D12B28 | 28 | 170.14mm | 20mm | 80mm | 120mm | 50mm | 6.81 |
| D12B29 | 29 | 176.19mm | 20mm | 80mm | 120mm | 50mm | 7.13 |
| D12B30 | 30 | 182.25mm | 20mm | 80mm | 120mm | 50mm | 7.49 |
| D12B32 | 32 | 194.35mm | 20mm | 85mm | 130mm | 50mm | 9.31 |
| D12B35 | 35 | 212.52mm | 20mm | 85mm | 130mm | 50mm | 10.18 |
| D12B36 | 36 | 218.57mm | 25mm | 85mm | 130mm | 50mm | 12.31 |
| D12B38 | 38 | 230.69mm | 25mm | 85mm | 130mm | 50mm | 12.99 |
| D12B40 | 40 | 242.80mm | 25mm | 85mm | 130mm | 50mm | 13.67 |
| D12B45 | 45 | 273.09mm | 25mm | 85mm | 130mm | 50mm | 15.38 |
| D12B48 | 48 | 291.27mm | 25mm | 85mm | 130mm | 50mm | 16.41 |
| D12B57 | 57 | 345.81mm | 32mm | 85mm | 130mm | 65mm | 25.34 |
| D12B60 | 60 | 363.99mm | 32mm | 85mm | 130mm | 65mm | 26.67 |
| D12C68 | 68 | 412.49mm | 32mm | 85mm | 130mm | 75mm | 30.48 |
| D12C76 | 76 | 460.98mm | 40mm | 85mm | 130mm | 75mm | 25.63 |
| D12C80 | 80 | 485.23mm | 40mm | 85mm | 130mm | 75mm | 26.98 |
| D12C95 | 95 | 576.17mm | 40mm | 93mm | 140mm | 85mm | 39.24 |
| D12C96 | 96 | 582.23mm | 40mm | 93mm | 140mm | 85mm | 39.65 |
| D12C114 | 114 | 691.36mm | 40mm | 93mm | 140mm | 85mm | 41.86 |
12B-2 Taper Bushed Sprockets:
| Sprocket Size | Tooth Count | Pitch Diameter | Bushing Number | Bushing Max. Bore | Dimension (L) | Dimension (C) | Sprocket Weight (kg) | Bushing Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| D12BTB12 | 12 | 73.60mm | 1215 | 31.75mm | 38.10mm | 53.54mm | 0.61 | 0.73 |
| D12BTB13 | 13 | 79.60mm | 1215 | 31.75mm | 38.10mm | 59.74mm | 0.66 | 0.73 |
| D12BTB14 | 14 | 85.61mm | 1215 | 31.75mm | 38.10mm | 65.91mm | 0.84 | 0.73 |
| D12BTB15 | 15 | 91.63mm | 1615 | 41.28mm | 38.10mm | 72.09mm | 0.70 | 0.77 |
| D12BTB16 | 16 | 97.65mm | 1615 | 41.28mm | 38.10mm | 76.20mm | 1.11 | 0.77 |
| D12BTB17 | 17 | 103.67mm | 1615 | 41.28mm | 38.10mm | 82.93mm | 1.25 | 0.77 |
| D12BTB18 | 18 | 109.70mm | 2012 | 50.80mm | 31.75mm | 90.50mm | 1.56 | 0.77 |
| D12BTB19 | 19 | 115.74mm | 2012 | 50.80mm | 31.75mm | 86.60mm | 1.81 | 0.77 |
| D12BTB20 | 20 | 121.78mm | 2517 | 63.50mm | 44.45mm | 102.00mm | 2.04 | 1.59 |
| D12BTB21 | 21 | 127.82mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 2.50 | 1.59 |
| D12BTB22 | 22 | 133.86mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 2.78 | 1.59 |
| D12BTB23 | 23 | 139.90mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 3.07 | 1.59 |
| D12BTB24 | 24 | 145.95mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 3.35 | 1.59 |
| D12BTB25 | 25 | 151.99mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 3.63 | 1.59 |
| D12BTB26 | 26 | 158.04mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 3.91 | 1.59 |
| D12BTB27 | 27 | 164.09mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 4.20 | 1.59 |
| D12BTB28 | 28 | 170.14mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 4.48 | 1.59 |
| D12BTB30 | 30 | 182.25mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 5.04 | 1.59 |
| D12BTB32 | 32 | 194.35mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 5.61 | 1.59 |
| D12BTB35 | 35 | 212.52mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 6.46 | 1.59 |
| D12CTB38 | 38 | 230.69mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 8.40 | 1.59 |
| D12CTB40 | 40 | 242.80mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 9.56 | 1.59 |
| D12CTB42 | 42 | 254.92mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 10.73 | 1.59 |
| D12CTB45 | 45 | 273.09mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 12.48 | 1.59 |
| D12CTB48 | 48 | 291.27mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 14.23 | 1.59 |
| D12CTB54 | 54 | 327.63mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 17.73 | 1.59 |
| D12CTB57 | 57 | 345.81mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 19.48 | 1.59 |
| D12CTB60 | 60 | 363.99mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 21.23 | 1.59 |
| D12CTB65 | 65 | 394.30mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 24.15 | 1.59 |
| D12CTB70 | 70 | 424.61mm | 2517 | 63.50mm | 44.45mm | 107.95mm | 27.06 | 1.59 |
| D12CTB75 | 75 | 454.92mm | 3020 | 76.20mm | 50.80mm | 133.35mm | 19.27 | 2.95 |
| D12CTB76 | 76 | 460.98mm | 3020 | 76.20mm | 50.80mm | 133.35mm | 19.52 | 2.95 |
| D12CTB84 | 84 | 509.48mm | 3020 | 76.20mm | 50.80mm | 133.35mm | 21.58 | 2.95 |
| D12CTB95 | 95 | 576.17mm | 3020 | 76.20mm | 50.80mm | 133.35mm | 24.40 | 2.95 |
| D12CTB96 | 96 | 582.23mm | 3020 | 76.20mm | 50.80mm | 133.35mm | 24.66 | 2.95 |
| D12CTB114 | 114 | 691.36mm | 3020 | 76.20mm | 50.80mm | 133.35mm | 29.28 | 2.95 |
