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 We have over 700 end of line + a few over stocked items available at discounted prices whilst stocks last. Look out for the them as you browse, download a complete PDF list or visit this page.


0.5 inch 081 Steel Chain Sprockets

A narrow version of our 08B heavy duty sprockets suitable for use with simplex 081 bicycle type chain.

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: 1/8"
Boss width: 14 to 25mm depending on sprocket size

81 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' 1/8"
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 21 8 14
24 103 97.29 60 12 20
9 41.5 37.13 25 8 14
25 107.1 101.33 60 12 20
10 46.2 41.1 28 8 14
26 111.2 105.36 70 16 20
11 49.6 45.07 31 8 16
27 115.4 109.4 70 16 20
12 53.9 49.07 35 8 16
28 119.4 113.42 70 16 20
13 58.4 53.06 39 8 16
29 123.4 117.46 70 16 20
14 62.8 57.07 43 8 16
30 127.5 121.5 70 16 20
15 66.8 61.09 47 8 16
31 131.5 125.54 70 16 20
16 70.9 65.1 50 10 18
32 135.5 129.56 70 16 20
17 74.9 69.11 50 10 18
33 139.6 133.6 70 16 20
18 78.9 73.14 50 10 18
34 143.6 137.64 70 16 20
19 82.9 77.16 50 10 18
35 147.6 141.68 70 16 20
20 86.9 81.19 50 10 18
36 151.7 145.72 70 16 25
21 91 85.22 60 12 20
37 155.7 149.76 70 16 25
22 95 89.24 60 12 20
38 159.8 153.8 70 16 25
23 99 93.27 60 12 20
40 167.8 161.87 70 16 25

 

 

 


081 Steel Chain Sprocket 1/2" - 8T

Part No.: 4808-108

Shipping Weight: 40.00 g.

£1.51 (£1.81 inc tax)
In stock
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 9T

Part No.: 4808-109

Shipping Weight: 60.00 g.

£2.03 (£2.44 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 10T

Part No.: 4808-110

Shipping Weight: 80.00 g.

£2.58 (£3.10 inc tax)
In stock
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 11T

Part No.: 4808-111

Shipping Weight: 100.00 g.

£2.62 (£3.14 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 12T

Part No.: 4808-112

Shipping Weight: 130.00 g.

£2.78 (£3.34 inc tax)
In stock
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 13T

Part No.: 4808-113

Shipping Weight: 160.00 g.

£3.18 (£3.82 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 14T

Part No.: 4808-114

Shipping Weight: 200.00 g.

£3.34 (£4.01 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 15T

Part No.: 4808-115

Shipping Weight: 232.00 g.

£3.57 (£4.28 inc tax)
In stock
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 16T

Part No.: 4808-116

Shipping Weight: 250.00 g.

£3.97 (£4.76 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 17T

Part No.: 4808-117

Shipping Weight: 320.00 g.

£4.45 (£5.34 inc tax)
In stock
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 18T

Part No.: 4808-118

Shipping Weight: 323.00 g.

£4.89 (£5.87 inc tax)
In stock
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 19T

Part No.: 4808-119

Shipping Weight: 328.00 g.

£5.80 (£6.96 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 20T

Part No.: 4808-120

Shipping Weight: 330.00 g.

£6.40 (£7.68 inc tax)
In stock
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 21T

Part No.: 4808-121

Shipping Weight: 370.00 g.

£6.99 (£8.39 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 22T

Part No.: 4808-122

Shipping Weight: 410.00 g.

£7.03 (£8.44 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 23T

Part No.: 4808-123

Shipping Weight: 450.00 g.

£7.35 (£8.82 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 24T

Part No.: 4808-124

Shipping Weight: 490.00 g.

£7.51 (£9.01 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 25T

Part No.: 4808-125

Shipping Weight: 530.00 g.

£8.14 (£9.77 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 26T

Part No.: 4808-126

Shipping Weight: 570.00 g.

£8.42 (£10.10 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 27T

Part No.: 4808-127

Shipping Weight: 610.00 g.

£8.58 (£10.30 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 28T

Part No.: 4808-128

Shipping Weight: 650.00 g.

£8.70 (£10.44 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 29T

Part No.: 4808-129

Shipping Weight: 690.00 g.

£10.01 (£12.01 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 30T

Part No.: 4808-130

Shipping Weight: 725.00 g.

£10.84 (£13.01 inc tax)
In stock
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 31T

Part No.: 4808-131

Shipping Weight: 760.00 g.

£11.80 (£14.16 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 32T

Part No.: 4808-132

Shipping Weight: 795.00 g.

£11.83 (£14.20 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 33T

Part No.: 4808-133

Shipping Weight: 830.00 g.

£12.35 (£14.82 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 34T

Part No.: 4808-134

Shipping Weight: 865.00 g.

£13.23 (£15.88 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 35T

Part No.: 4808-135

Shipping Weight: 900.00 g.

£13.50 (£16.20 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 36T

Part No.: 4808-136

Shipping Weight: 935.00 g.

£15.17 (£18.20 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 37T

Part No.: 4808-137

Shipping Weight: 970.00 g.

£15.73 (£18.88 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 38T

Part No.: 4808-138

Shipping Weight: 1005.00 g.

£16.09 (£19.31 inc tax)
Out of Stock
Transmission Special Order Product
Normally dispatched within 3-7 days
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

081 Steel Chain Sprocket 1/2" - 40T

Part No.: 4808-140

Shipping Weight: 1070.00 g.

£16.96 (£20.35 inc tax)
In stock
A 1/2" pitch sprocket that is a narrow version of our 08B range, use with the 081 type chain For dimensions and full product description, see here .... Read More

 

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