MARTIN SPROCKET Duplex Stock Bore B Type Metric Roller Chain Sprockets, 12B-2 Chain Number
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| Style | Model | Pitch Dia. | Outside Dia. | Number Of Teeth | Length Through Bore | Pitch | Price | |
|---|---|---|---|---|---|---|---|---|
| A | D12B11 | 67.617 mm | 79.365 mm | - | 50.013 mm | 19.05 mm | €207.47 | |
| B | D12B12 | 73.604 mm | 85.351 mm | 12 | 50.013 mm | 19.05 mm | €215.67 | |
| C | D12B13 | 79.602 mm | 91.349 mm | 13 | 50.013 mm | 19.05 mm | €233.74 | |
| D | D12B14 | 85.61 mm | 97.357 mm | 14 | 50.013 mm | 19.05 mm | €246.00 | |
| E | D12B15 | 91.625 mm | 103.373 mm | 15 | 50.013 mm | 19.05 mm | €255.90 | |
| F | D12B16 | 97.647 mm | 109.395 mm | 16 | 50.013 mm | 19.05 mm | €274.21 | |
| G | D12B17 | 103.674 mm | 115.421 mm | 17 | 50.013 mm | 19.05 mm | €289.06 | |
| H | D12B18 | 109.705 mm | 121.452 mm | 18 | 50.013 mm | 19.05 mm | €301.33 | |
| I | D12B19 | 115.739 mm | 127.486 mm | 19 | 50.013 mm | 19.05 mm | €318.55 | |
| J | D12B20 | 121.776 mm | 133.524 mm | - | 50.013 mm | 19.05 mm | €340.71 | |
| K | D12B21 | 127.816 mm | 139.564 mm | 21 | 50.013 mm | 19.05 mm | €362.01 | |
| K | D12B22 | 133.858 mm | 145.606 mm | 22 | 50.013 mm | 19.05 mm | €366.96 | |
| K | D12B23 | 139.902 mm | 151.65 mm | 23 | 50.013 mm | 19.05 mm | €370.18 | |
| K | D12B24 | 145.948 mm | 157.695 mm | 24 | 50.013 mm | 19.05 mm | €322.27 | |
| K | D12B25 | 151.995 mm | 163.742 mm | - | 50.013 mm | 19.05 mm | €335.18 | |
| L | D12B26 | 158.043 mm | 169.791 mm | - | 49.987 mm | 19.05 mm | €348.28 | |
| M | D12B27 | 164.093 mm | 175.84 mm | 27 | 50.013 mm | 19.05 mm | €385.00 | |
| N | D12B28 | 170.143 mm | 181.891 mm | 28 | 50.013 mm | 19.05 mm | €421.71 | |
| K | D12B29 | 176.195 mm | 187.942 mm | 29 | 50.013 mm | 19.05 mm | €458.41 | |
| O | D12B30 | 182.247 mm | 193.995 mm | 30 | 50.013 mm | 19.05 mm | €495.14 | |
| K | D12B32 | 194.354 mm | 206.101 mm | 32 | 50.013 mm | 19.05 mm | €519.31 | |
| P | D12B35 | 212.518 mm | 224.266 mm | - | 50.013 mm | 19.05 mm | €553.07 | |
| Q | D12B36 | 218.574 mm | 230.322 mm | 36 | 50.013 mm | 19.05 mm | €568.55 | |
| R | D12B38 | 230.687 mm | 242.435 mm | 38 | 50.013 mm | 19.05 mm | €727.45 | |
| S | D12B40 | 242.802 mm | 254.549 mm | - | 50.013 mm | 19.05 mm | €678.51 | |
| T | D12B45 | 273.093 mm | 284.84 mm | - | 50.013 mm | 19.05 mm | €783.45 | |
| U | D12B48 | 291.27 mm | 303.018 mm | - | 50.013 mm | 19.05 mm | €847.67 | |
| V | D12B57 | 345.812 mm | 357.559 mm | - | 64.999 mm | 19.05 mm | €1,040.35 |
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