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 We have over 700 end of line + a few over stocked items available at discounted prices even lower discounted prices - whilst stocks last. Look out for the them as you browse, download a complete PDF list or visit this page. We simply do not want to transport them to our new premises and re-stock them again!


6mm Steel Chain Sprockets

High quality 6mm British Standard pitch sprockets in the most popular sizes. Sizes we do not stock at technobots are available through our gearsandsprockets website that offers a far greater range of transmission components.

These sprockets are supplied with a pilot bore that can be machined 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: 2.8mm
Boss width: 7.5 to 12mm depending on sprocket size

Steel EN8, 080M40/080M46

04B (04-1) Pitch 6mm 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' 2.8mm
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 18 15.67 10 5 10
26 52.1 49.76 30 8 15
9 19.9 17.54 12 5 10
27 54 51.67 30 8 15
10 21.7 19.42 13 6 10
28 55.9 53.58 30 8 15
11 23.6 21.30 14 6 10
29 57.8 55.5 30 8 15
12 25.4 23.18 16 6 10
30 59.8 57.42 30 8 15
13 27.3 25.05 18 8 10
31 61.7 59.31 30 8 15
14 29.2 26.96 20 8 10
32 63.6 61.21 30 8 15
15 31 28.86 20 8 10
33 65.5 63.11 30 8 15
16 33 30.76 20 8 13
34 67.4 65.02 30 8 15
17 35 32.65 20 8 13
35 69.3 66.93 30 8 15
18 36.9 34.55 20 8 13
36 71.2 68.84 30 8 15
19 38.8 36.44 20 8 13
37 73.1 70.75 30 8 15
20 40.7 38.34 20 8 13
38 75 72.66 30 8 15
21 42.6 40.25 25 8 13
40 78.9 76.47 30 8 15
23 46.4 44.06 25 8 13
45 88.5 86.01 40 10 16
24 48.3 45.96 25 8 13
57 111.4 108.93 50 12 20
25 50.2 47.87 25 8 13
76 147.6 145.19 60 12 20

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