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0.5 Inch Steel Chain Sprockets
High quality 1/2" pitch British Standard sprockets in the most popular sizes.
These sprockets are supplied with a pilot bore that can be machine to a larger accurate diameter (subject to boss size) although many users find the pilot bore quite acceptable. Using our 'Custom Machining' service, we can not only bore out these sprockets but also drill and tap for set (grub) screw fixing. See the 'Custom Machining' tab with each product for more information.
Nominal tooth width: 7.2mm
| 08B | Pitch 1/2" | Bore size is subject to change from table below, if bore size is critical then select 'Custom Bore Size' with bore required when making purchase. | ||||||||||
| Overall Width 'A' | See Below | |||||||||||
| Tooth Width 'B1' | 7.2mm | |||||||||||
| Teeth | Diameter 'de' | PCD Ø 'dp' | Boss Ø dm | Bore Ø 'D1' | Overall Width | Teeth | Diameter 'de' | PCD Ø 'dp' | Boss Ø dm | Bore Ø 'D1' | Overall Width | |
| 8 | 37.2 | 33.18 | 20 | 10 | 25 | 27 | 114 | 109.4 | 70 | 16 | 30 | |
| 9 | 41 | 37.13 | 24 | 10 | 25 | 28 | 118 | 113.42 | 70 | 16 | 30 | |
| 10 | 45.2 | 41.1 | 26 | 10 | 25 | 29 | 122 | 117.46 | 80 | 16 | 30 | |
| 11 | 48.7 | 45.07 | 29 | 10 | 25 | 30 | 126.1 | 121.5 | 80 | 16 | 30 | |
| 12 | 53 | 49.07 | 33 | 10 | 28 | 31 | 130.2 | 125.54 | 90 | 16 | 30 | |
| 13 | 57.4 | 53.06 | 37 | 10 | 28 | 32 | 134.3 | 129.56 | 90 | 16 | 30 | |
| 14 | 61.8 | 57.07 | 41 | 10 | 28 | 33 | 138.4 | 133.6 | 90 | 16 | 30 | |
| 15 | 65.5 | 61.09 | 45 | 10 | 28 | 34 | 142.6 | 137.64 | 90 | 16 | 30 | |
| 16 | 69.5 | 65.1 | 50 | 12 | 28 | 35 | 146.7 | 141.68 | 90 | 16 | 30 | |
| 17 | 73.6 | 69.11 | 52 | 12 | 28 | 36 | 151 | 145.72 | 90 | 16 | 35 | |
| 18 | 77.8 | 73.14 | 56 | 12 | 28 | 37 | 154.6 | 149.76 | 90 | 16 | 35 | |
| 19 | 81.7 | 77.16 | 60 | 12 | 28 | 38 | 158.6 | 153.8 | 90 | 16 | 35 | |
| 20 | 85.8 | 81.19 | 64 | 12 | 28 | 39 | 162.7 | 157.83 | 90 | 16 | 35 | |
| 21 | 89.7 | 85.22 | 68 | 12 | 28 | 40 | 166.8 | 161.87 | 90 | 16 | 35 | |
| 22 | 93.8 | 89.24 | 70 | 12 | 28 | 45 | 140.7 | 136.55 | 70 | 19 | 35 | |
| 23 | 98.2 | 93.27 | 70 | 14 | 28 | 57 | 176.9 | 172.91 | 70 | 19 | 35 | |
| 24 | 101.8 | 97.29 | 70 | 14 | 28 | 60 | 248.6 | 242.66 | 70 | 19 | 35 | |
| 25 | 105.8 | 101.33 | 70 | 14 | 28 | 64 | 265.1 | 258.82 | 70 | 19 | 35 | |
| 26 | 110 | 105.36 | 70 | 16 | 30 | |||||||
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