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Name (A-Z)
06B-1
06B-1
08B-1
08B-1
10B-1
10B-1
12B-1
12B-1
16B-1
16B-1
20B-1
20B-1

Finished bore sprockets

Finished bore sprockets are hub sprockets in which the shaft bore has already been machined to a specific diameter and a keyway has been cut in the hub. The bore diameter is given in the product name as D, e.g. D=25. You fit the sprocket straight onto a keyed shaft - with no turning, reaming or keyway cutting.

Finished bore sprockets - replace a sprocket in a few minutes without a machinist

The biggest benefit is time: you can replace a worn sprocket in a few minutes, without a trip to the machine shop and without waiting for machining. It is a convenient solution for maintenance teams, workshops without their own lathe and machine builders who want to reduce the number of operations during assembly. You pay for a finished part, not for an extra service. Sprockets made to the standard work with chain from any manufacturer.

Sprockets with bore and keyway for B series chains (DIN 8187)

Sprockets for European B series chains to DIN 8187 / ISO 606 in the most popular pitches, made of C45 steel. Simplex sprockets predominate, and in a few sizes individual duplex sprockets are available. Each chain size has a separate subgroup, and the bore diameter and number of teeth are given in the product name. If you need a non-standard bore or a special fit, choose a pilot bore sprocket from the Hub sprockets group.

How to match a finished bore sprocket to the chain and shaft

Start with the chain designation, e.g. 08B-1 - it specifies the pitch and number of strands. Then choose the number of teeth based on the required ratio and the space in the machine. Finally, match the bore diameter D to the shaft diameter - the keyway is cut to suit this diameter.

Frequently asked questions about finished bore sprockets

How do I stop the sprocket from sliding along the shaft?

The key transmits torque but does not lock the sprocket along the shaft. Use a retaining ring, a spacer sleeve or a set screw in a tapped hole in the hub.

Are the sprockets available from stock?

Stock availability is shown above the product price and may vary depending on the warehouse.

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In Stock
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Sprocket 08B-1 (1/2") z=16 with hub, bore 30 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=16 with hub, bore 30 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 16 teeth, pitch 12.7 mm (1/2"), finished bore 30 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 16 teeth, pitch 12.7 mm (1/2"), finished bore 30 mm with keyway, C45 steel.
Weight
0,45 kg
In Stock
1121
In Stock:
1121

8,92 €

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8,92 €

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Sprocket 08B-1 (1/2") z=16 with hub, bore 32 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=16 with hub, bore 32 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 16 teeth, pitch 12.7 mm (1/2"), finished bore 32 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 16 teeth, pitch 12.7 mm (1/2"), finished bore 32 mm with keyway, C45 steel.
Weight
0,45 kg
In Stock
114
In Stock:
114

8,92 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 15 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 15 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 15 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 15 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
162
In Stock:
162

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 16 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 16 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 16 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 16 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
693
In Stock:
693

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 18 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 18 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 18 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 18 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
288
In Stock:
288

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 19 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 19 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 19 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 19 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
200
In Stock:
200

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 20 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 20 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 20 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 20 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
613
In Stock:
613

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 22 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 22 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 22 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 22 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
179
In Stock:
179

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 24 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 24 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 24 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 24 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
84
In Stock:
84

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 25 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 25 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 25 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 25 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
1670
In Stock:
1670

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 28 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 28 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 28 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 28 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
297
In Stock:
297

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 30 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 30 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 30 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 30 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
735
In Stock:
735

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 32 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 32 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 32 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 32 mm with keyway, C45 steel.
Weight
0,5 kg
In Stock
112
In Stock:
112

9,59 €

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Sprocket 08B-1 (1/2") z=17 with hub, bore 35 mm with keyway, without set screws, C45 steel

Sprocket 08B-1 (1/2") z=17 with hub, bore 35 mm with keyway, without set screws, C45 steel

Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 35 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 17 teeth, pitch 12.7 mm (1/2"), finished bore 35 mm with keyway, C45 steel.
In Stock
0
In Stock:
0
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Sprocket 08B-1 (1/2") z=18 with hub, bore 16 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=18 with hub, bore 16 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 16 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 16 mm with keyway, C45 steel.
Weight
0,59 kg
In Stock
576
In Stock:
576

9,70 €

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9,70 €

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Sprocket 08B-1 (1/2") z=18 with hub, bore 18 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=18 with hub, bore 18 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 18 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 18 mm with keyway, C45 steel.
Weight
0,59 kg
In Stock
383
In Stock:
383

9,70 €

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9,70 €

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Sprocket 08B-1 (1/2") z=18 with hub, bore 19 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=18 with hub, bore 19 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 19 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 19 mm with keyway, C45 steel.
Weight
0,59 kg
In Stock
197
In Stock:
197

9,70 €

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Sprocket 08B-1 (1/2") z=18 with hub, bore 20 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=18 with hub, bore 20 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 20 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 20 mm with keyway, C45 steel.
Weight
0,59 kg
In Stock
605
In Stock:
605

9,70 €

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9,70 €

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Quantity must be included in range 0,01 - 605
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Sprocket 08B-1 (1/2") z=18 with hub, bore 22 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=18 with hub, bore 22 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 22 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 22 mm with keyway, C45 steel.
Weight
0,59 kg
In Stock
157
In Stock:
157

9,70 €

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9,70 €

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Quantity must be included in range 0,01 - 157
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Sprocket 08B-1 (1/2") z=18 with hub, bore 24 mm with keyway, C45 steel

Sprocket 08B-1 (1/2") z=18 with hub, bore 24 mm with keyway, C45 steel

Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 24 mm with keyway, C45 steel.
Sprocket with hub for chain 08B-1, 18 teeth, pitch 12.7 mm (1/2"), finished bore 24 mm with keyway, C45 steel.
Weight
0,59 kg
In Stock
583
In Stock:
583

9,70 €

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9,70 €

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