NK Standard Sprockets B Type NK25B
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NK Standard Sprockets B Type NK25B
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| Chain | No.25 | |
| Pitch | (P) | 6.35 mm |
| Internal Width | (W) | 3.18 mm |
| Outside Dia. | (Dr) | 3.30 mm |
| Teeth Width | (T) | 2.8 mm |
| Sprocket No. | Outside Dia. Do |
Pitch Dia. Dp |
Bore dia. | Hub | Weight (g) |
||||
| Type | Z | Stock Bore | Min. | Max | BD | BL | |||
| NK25B | 10 | 23 | 20.55 | 6.5 | 8.5 | 8.5 | 14 | 15 | 30 |
| 11 | 25 | 22.54 | 6.5 | 8.5 | 8.5 | 15 | 15 | 30 | |
| 12 | 28 | 24.53 | 7.5 | 9.5 | 9.5 | 15 | 15 | 30 | |
| 13 | 30 | 26.53 | 7.5 | 9.5 | 10 | 18 | 15 | 50 | |
| 14 | 32 | 28.54 | 7.5 | 9.5 | 10 | 20 | 15 | 50 | |
| 15 | 34 | 30.54 | 7.5 | 9.5 | 10 | 20 | 15 | 50 | |
| 16 | 36 | 32.55 | 9.5 | 11.5 | 12 | 25 | 15 | 60 | |
| 17 | 38 | 34.56 | 9.5 | 11.5 | 12 | 25 | 15 | 70 | |
| 18 | 40 | 36.57 | 9.5 | 11.5 | 12 | 25 | 15 | 70 | |
| 19 | 42 | 38.58 | 9.5 | 11.5 | 16 | 28 | 15 | 80 | |
| 20 | 44 | 40.59 | 9.5 | 11.5 | 16 | 28 | 15 | 80 | |
| 21 | 46 | 42.61 | 9.5 | 11.5 | 16 | 28 | 15 | 90 | |
| 22 | 48 | 44.62 | 9.5 | 11.5 | 16 | 30 | 15 | 100 | |
| 23 | 50 | 46.63 | 9.5 | 11.5 | 16 | 30 | 15 | 110 | |
| 24 | 52 | 48.65 | 9.5 | 11.5 | 16 | 30 | 15 | 120 | |
| 25 | 54 | 50.66 | 9.5 | 11.5 | 20 | 35 | 15 | 140 | |
| 26 | 56 | 52.68 | 9.5 | 11.5 | 20 | 35 | 15 | 140 | |
| 27 | 58 | 54.70 | 9.5 | 11.5 | 20 | 35 | 15 | 150 | |
| 28 | 60 | 56.71 | 9.5 | 11.5 | 20 | 35 | 15 | 150 | |
| 29 | 62 | 58.73 | 9.5 | 11.5 | 20 | 35 | 15 | 160 | |
| 30 | 64 | 60.75 | 9.5 | 11.5 | 20 | 35 | 15 | 160 | |
| 31 | 66 | 62.77 | 10.5 | 12.5 | 22 | 40 | 20 | 200 | |
| 32 | 68 | 64.78 | 10.5 | 12.5 | 22 | 40 | 20 | 200 | |
| 33 | 70 | 66.8 | 10.5 | 12.5 | 22 | 40 | 20 | 210 | |
| 34 | 72 | 68.82 | 10.5 | 12.5 | 22 | 40 | 20 | 210 | |
| 35 | 74 | 70.84 | 10.5 | 12.5 | 22 | 40 | 20 | 210 | |
| 36 | 76 | 72.86 | 10.5 | 12.5 | 22 | 40 | 20 | 220 | |
| 37 | 78 | 74.88 | 10.5 | 12.5 | 22 | 40 | 20 | 260 | |
| 38 | 80 | 76.9 | 10.5 | 12.5 | 22 | 40 | 20 | 260 | |
| 39 | 82 | 78.91 | 10.5 | 12.5 | 22 | 40 | 20 | 270 | |
| 40 | 84 | 80.93 | 10.5 | 12.5 | 22 | 40 | 20 | 270 | |
| 41 | 87 | 82.95 | 10.5 | 12.5 | 30 | 50 | 20 | 320 | |
| 42 | 89 | 84.97 | 10.5 | 12.5 | 30 | 50 | 20 | 320 | |
| 43 | 91 | 86.99 | 10.5 | 12.5 | 30 | 50 | 20 | 400 | |
| 44 | 93 | 89.01 | 10.5 | 12.5 | 30 | 50 | 20 | 410 | |
| 45 | 95 | 91.03 | 10.5 | 12.5 | 30 | 50 | 20 | 410 | |
| 48 | 101 | 97.09 | 10.5 | 12.5 | 30 | 50 | 20 | 430 | |
| 50 | 105 | 101.1 | 10.5 | 12.5 | 30 | 50 | 20 | 460 | |
| 54 | 113 | 109.2 | 10.5 | 12.5 | 30 | 50 | 20 | 470 | |
| 60 | 125 | 121.3 | 10.5 | 12.5 | 30 | 50 | 20 | 520 | |
| 65 | 135 | 131.4 | 11.5 | 13.5 | 30 | 50 | 30 | 720 | |
| 70 | 145 | 141.5 | 11.5 | 13.5 | 30 | 50 | 30 | 770 | |
| 75 | 155 | 151.6 | 11.5 | 13.5 | 30 | 50 | 30 | 820 | |
| 80 | 165 | 161.7 | 11.5 | 13.5 | 30 | 50 | 30 | 880 | |
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