MARTIN SPROCKET Simplex Stock Bore B Type Metric Roller Chain Sprockets, 12B-1 Chain Number
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| Style | Model | Pitch Dia. | Outside Dia. | Number Of Teeth | Length Through Bore | Pitch | Price | |
|---|---|---|---|---|---|---|---|---|
| A | 12B11 | 67.617 mm | 79.365 mm | - | 35 mm | 19.05 mm | €88.62 | |
| B | 12B12 | 73.604 mm | 85.351 mm | 12 | 35 mm | 19.05 mm | €89.84 | |
| C | 12B13 | 79.602 mm | 91.349 mm | 13 | 35 mm | 19.05 mm | €97.66 | |
| B | 12B14 | 85.61 mm | 97.357 mm | 14 | 35 mm | 19.05 mm | €101.72 | |
| B | 12B15 | 91.625 mm | 103.373 mm | 15 | 35.001 mm | 19.05 mm | €110.22 | |
| B | 12B16 | 97.647 mm | 109.395 mm | 16 | 35 mm | 19.05 mm | €124.20 | |
| B | 12B17 | 103.674 mm | 115.421 mm | 17 | 35 mm | 19.05 mm | €122.91 | |
| B | 12B18 | 109.705 mm | 121.452 mm | 18 | 35.001 mm | 19.05 mm | €130.86 | |
| B | 12B19 | 115.739 mm | 127.486 mm | 19 | 35 mm | 19.05 mm | €149.16 | |
| B | 12B20 | 121.776 mm | 133.524 mm | - | 35 mm | 19.05 mm | €159.47 | |
| D | 12B21 | 127.816 mm | 139.564 mm | 21 | 40 mm | 19.05 mm | €164.42 | |
| B | 12B22 | 133.858 mm | 145.606 mm | 22 | 40 mm | 19.05 mm | €177.13 | |
| B | 12B23 | 139.902 mm | 151.65 mm | 23 | 40 mm | 19.05 mm | €182.49 | |
| E | 12B24 | 145.948 mm | 157.695 mm | 24 | 40 mm | 19.05 mm | €197.57 | |
| F | 12B25 | 151.995 mm | 163.742 mm | - | 40 mm | 19.05 mm | €212.42 | |
| G | 12B26 | 158.043 mm | 169.791 mm | - | 40 mm | 19.05 mm | €219.75 | |
| H | 12B27 | 164.093 mm | 175.84 mm | 27 | 40 mm | 19.05 mm | €232.03 | |
| I | 12B28 | 170.143 mm | 181.891 mm | 28 | 40 mm | 19.05 mm | €233.74 | |
| J | 12B29 | 176.195 mm | 187.942 mm | 29 | 40 mm | 19.05 mm | €241.05 | |
| K | 12B30 | 182.247 mm | 193.995 mm | 30 | 40.005 mm | 19.05 mm | €242.77 | |
| L | 12B31 | 188.3 mm | 200.048 mm | - | 40 mm | 19.05 mm | €249.21 | |
| M | 12B32 | 194.354 mm | 206.101 mm | 32 | 40 mm | 19.05 mm | €214.36 | |
| N | 12B34 | 206.463 mm | 218.21 mm | 34 | 40 mm | 19.05 mm | €255.90 | |
| O | 12B35 | 212.518 mm | 224.266 mm | - | 40 mm | 19.05 mm | €257.87 | |
| P | 12B36 | 218.574 mm | 230.322 mm | 36 | 40 mm | 19.05 mm | €268.17 | |
| Q | 12B37 | 224.631 mm | 236.378 mm | - | 40 mm | 19.05 mm | €292.30 | |
| R | 12B38 | 230.687 mm | 242.435 mm | 38 | 40 mm | 19.05 mm | €294.43 | |
| S | 12B39 | 236.744 mm | 248.492 mm | - | 40 mm | 19.05 mm | €253.30 | |
| T | 12B40 | 242.802 mm | 254.549 mm | - | 40 mm | 19.05 mm | €254.79 | |
| U | 12B41 | 248.859 mm | 260.607 mm | - | 40 mm | 19.05 mm | €280.77 | |
| V | 12B42 | 254.917 mm | 266.665 mm | 42 | 40 mm | 19.05 mm | €281.50 | |
| W | 12B44 | 267.034 mm | 278.782 mm | - | 40 mm | 19.05 mm | €289.27 | |
| X | 12B45 | 273.093 mm | 284.84 mm | - | 40 mm | 19.05 mm | €291.30 | |
| Y | 12B46 | 279.152 mm | 290.899 mm | - | 40 mm | 19.05 mm | €301.43 | |
| Y | 12B47 | 285.211 mm | 296.959 mm | - | 40 mm | 19.05 mm | €310.30 | |
| Z | 12B48 | 291.27 mm | 303.018 mm | - | 40 mm | 19.05 mm | €311.95 | |
| Y | 12B50 | 303.39 mm | 315.137 mm | - | 40 mm | 19.05 mm | €349.20 | |
| Y | 12B57 | 345.812 mm | 357.559 mm | - | 45 mm | 19.05 mm | €403.82 | |
| A1 | 12B65 | 394.301 mm | 406.048 mm | - | 45 mm | 19.05 mm | €519.31 | |
| B1 | 12B70 | 424.609 mm | 436.356 mm | 70 | 45 mm | 19.05 mm | €550.28 | |
| C1 | 12B72 | 436.732 mm | 448.48 mm | - | 50 mm | 19.05 mm | €580.55 | |
| D1 | 12B76 | 460.98 mm | 472.728 mm | - | 50 mm | 19.05 mm | €661.72 | |
| E1 | 12B80 | 485.229 mm | 496.976 mm | 80 | 50 mm | 19.05 mm | €687.71 | |
| E1 | 12B84 | 509.478 mm | 521.226 mm | 84 | 50 mm | 19.05 mm | €739.37 | |
| F1 | 12B95 | 576.166 mm | 587.914 mm | - | 55 mm | 19.05 mm | €811.22 | |
| E1 | 12B96 | 582.229 mm | 593.977 mm | - | 55 mm | 19.05 mm | €823.92 |
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