Site encryption and secure transactions
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To mainland UK on orders of £100+
Site encryption and secure transactions
We accept PayPal, Mastercard, Visa and more
To mainland UK on orders of £100+
Tooth radius: r3 = 13
Radius size: C = 1.3
Tooth width: B1 = 7.2
Tooth width: b1 = 7.0
Tooth width: B2 = 21.0
Tooth width: B3 = 34.9
| No. teeth | Outside dia. de | Pitch dia. dp | Simplex | Duplex | Triplex |
|---|---|---|---|---|---|
| D1* | D2* | D3* | |||
| 8 | 37.2 | 33.18 | 8 | 10 | 10 |
| 9 | 41 | 37.13 | 8 | 10 | 12 |
| 10 | 45.2 | 41.10 | 8 | 10 | 12 |
| 11 | 48.7 | 45.07 | 10 | 12 | 14 |
| 12 | 53 | 49.07 | 10 | 12 | 14 |
| 13 | 57.4 | 53.06 | 10 | 12 | 14 |
| 14 | 61.8 | 57.07 | 10 | 12 | 14 |
| 15 | 65.5 | 61.09 | 10 | 12 | 14 |
| 16 | 69.5 | 65.10 | 10 | 14 | 16 |
| 17 | 73.6 | 69.11 | 10 | 14 | 16 |
| 18 | 77.8 | 73.14 | 10 | 14 | 16 |
| 19 | 81.7 | 77.16 | 10 | 14 | 16 |
| 20 | 85.8 | 81.19 | 10 | 14 | 16 |
| 21 | 89.7 | 85.22 | 12 | 16 | 20 |
| 22 | 93.8 | 89.24 | 12 | 16 | 20 |
| 23 | 98.2 | 93.27 | 12 | 16 | 20 |
| 24 | 101.8 | 97.29 | 12 | 16 | 20 |
| 25 | 105.8 | 101.33 | 12 | 16 | 20 |
| 26 | 110 | 105.36 | 16 | 16 | 20 |
| 27 | 114 | 109.40 | 16 | 16 | 20 |
| 28 | 118 | 113.42 | 16 | 16 | 20 |
| 29 | 122 | 117.46 | 16 | 16 | 20 |
| 30 | 126.1 | 121.50 | 16 | 16 | 20 |
| 31 | 130.2 | 125.54 | 16 | 16 | 20 |
| 32 | 134.3 | 129.56 | 16 | 16 | 20 |
| 33 | 138.4 | 133.60 | 16 | 16 | 20 |
| 34 | 142.6 | 137.64 | 16 | 16 | 20 |
| 35 | 146.7 | 141.68 | 16 | 16 | 20 |
| 36 | 151 | 145.72 | 16 | 20 | 25 |
| 37 | 154.6 | 149.76 | 16 | 20 | 25 |
| 38 | 158.6 | 153.80 | 16 | 20 | 25 |
| 39 | 162.7 | 157.83 | 16 | 20 | 25 |
| 40 | 166.8 | 161.87 | 16 | 20 | 25 |
| 41 | 171.4 | 165.91 | 20 | 20 | 25 |
| 42 | 175.4 | 169.95 | 20 | 20 | 25 |
| 43 | 179.7 | 173.99 | 20 | 20 | 25 |
| 44 | 183.8 | 178.03 | 20 | 20 | 25 |
| 45 | 188 | 182.07 | 20 | 20 | 25 |
| 46 | 192.1 | 186.10 | 20 | 20 | 25 |
| 47 | 198.2 | 190.14 | 20 | 20 | 25 |
| 48 | 200.3 | 194.18 | 20 | 20 | 25 |
| 49 | 204.3 | 198.22 | 20 | 20 | 25 |
| 50 | 208.3 | 202.26 | 20 | 20 | 25 |
| 51 | 212.1 | 206.30 | 20 | 25 | 25 |
| 52 | 216.1 | 210.34 | 20 | 25 | 25 |
| 53 | 220.2 | 214.37 | 20 | 25 | 25 |
| 54 | 224.1 | 218.43 | 20 | 25 | 25 |
| 55 | 228.1 | 222.46 | 20 | 25 | 25 |
| 56 | 232.2 | 226.50 | 20 | 25 | 25 |
| 57 | 236.4 | 230.54 | 20 | 25 | 25 |
| 58 | 240.5 | 234.58 | 20 | 25 | 25 |
| 59 | 244.5 | 238.62 | 20 | 25 | 25 |
| 60 | 248.6 | 242.66 | 20 | 25 | 25 |
| 62 | 256.9 | 250.75 | 25 | 25 | 25 |
| 64 | 265.1 | 258.82 | 25 | 25 | 25 |
| 65 | 269 | 262.86 | 25 | 25 | 25 |
| 66 | 273 | 266.90 | 25 | 25 | 25 |
| 68 | 281 | 274.99 | 25 | 25 | 25 |
| 69 | 285 | 279.04 | 25 | 25 | 25 |
| 70 | 289 | 283.07 | 25 | 25 | 25 |
| 72 | 297.2 | 291.16 | 25 | 25 | 25 |
| 75 | 309.2 | 303.27 | 25 | 25 | 25 |
| 76 | 313.3 | 307.33 | 25 | 25 | 25 |
| 78 | 321.4 | 315.40 | 25 | 25 | 25 |
| 80 | 329.4 | 323.48 | 25 | 25 | 25 |
| 85 | 349 | 343.70 | 25 | 25 | 25 |
| 90 | 369.9 | 363.90 | 25 | 25 | 25 |
| 95 | 390.1 | 384.11 | 25 | 25 | 25 |
| 100 | 410.3 | 404.32 | 25 | 25 | 25 |
| 110 | 450.7 | 444.74 | 25 | 25 | 25 |
| 114 | 466.9 | 460.90 | 25 | 25 | 25 |
| 120 | 491.2 | 485.16 | 25 | 25 | 25 |
| 125 | 511.3 | 505.37 | 25 | 25 | 25 |
* Bore Ø H12
All dimensions in mm. Intermediate sizes & special sprockets to drawing up to 1000mm diameter. Standard to ISO/R 606