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12B-1 finished bore sprockets

12B-1 finished bore sprockets are simplex hub sprockets for 12B-1 chain of 3/4" (19.05 mm) pitch to DIN 8187 / ISO 606. They have a bored shaft hole and a cut keyway.

12B-1 finished bore sprockets for agricultural machinery and conveyors

12B drives work in agricultural machinery, scraper conveyors, presses and construction machinery, where the sprockets are already quite heavy and machining them takes more time. A finished bore sprocket saves this work - you fit it on a keyed shaft and the drive is running again.

12B-1 sprockets in C45 steel with bore and key

12B-1 simplex sprockets in C45 steel with bores of various diameters - the D value is given in the product name. The largest bores are available on sprockets with more teeth, which have a more massive hub.

Why large bores only on larger 12B-1 sprockets - questions

Why are large bores only available on larger sprockets?

The bore and keyway must fit in the hub while keeping a safe wall thickness. A sprocket with fewer teeth has a smaller hub, so its maximum bore is also smaller.

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Sprocket 12B-1 (3/4") z=20 with hub, bore 42 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=20 with hub, bore 42 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 20 teeth, pitch 19.05 mm (3/4"), finished bore 42 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 20 teeth, pitch 19.05 mm (3/4"), finished bore 42 mm with keyway, C45 steel.
Weight
1,82 kg
In Stock
57
In Stock:
57

26,31 €

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Sprocket 12B-1 (3/4") z=20 with hub, bore 45 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=20 with hub, bore 45 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 20 teeth, pitch 19.05 mm (3/4"), finished bore 45 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 20 teeth, pitch 19.05 mm (3/4"), finished bore 45 mm with keyway, C45 steel.
Weight
1,82 kg
In Stock
114
In Stock:
114

26,31 €

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Sprocket 12B-1 (3/4") z=20 with hub, bore 48 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=20 with hub, bore 48 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 20 teeth, pitch 19.05 mm (3/4"), finished bore 48 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 20 teeth, pitch 19.05 mm (3/4"), finished bore 48 mm with keyway, C45 steel.
Weight
1,82 kg
In Stock
422
In Stock:
422

26,31 €

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Sprocket 12B-1 (3/4") z=20 with hub, bore 50 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=20 with hub, bore 50 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 20 teeth, pitch 19.05 mm (3/4"), finished bore 50 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 20 teeth, pitch 19.05 mm (3/4"), finished bore 50 mm with keyway, C45 steel.
Weight
1,82 kg
In Stock
509
In Stock:
509

26,31 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 25 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 25 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 25 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 25 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
340
In Stock:
340

31,53 €

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31,53 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 28 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 28 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 28 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 28 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
62
In Stock:
62

31,53 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 30 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 30 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 30 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 30 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
174
In Stock:
174

31,53 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 32 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 32 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 32 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 32 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
235
In Stock:
235

31,53 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 35 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 35 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 35 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 35 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
857
In Stock:
857

31,53 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 38 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 38 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 38 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 38 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
76
In Stock:
76

31,53 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 40 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 40 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 40 mm with keyway, C45 steel
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 40 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 40 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
276
In Stock:
276

31,53 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 42 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 42 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 42 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 42 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
28
In Stock:
28

31,53 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 45 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 45 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 45 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 45 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
141
In Stock:
141

31,53 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 48 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 48 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 48 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 48 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
59
In Stock:
59

31,53 €

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Sprocket 12B-1 (3/4") z=21 with hub, bore 50 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=21 with hub, bore 50 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 50 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 21 teeth, pitch 19.05 mm (3/4"), finished bore 50 mm with keyway, C45 steel.
Weight
2,4 kg
In Stock
136
In Stock:
136

31,53 €

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Sprocket 12B-1 (3/4") z=22 with hub, bore 25 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=22 with hub, bore 25 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 22 teeth, pitch 19.05 mm (3/4"), finished bore 25 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 22 teeth, pitch 19.05 mm (3/4"), finished bore 25 mm with keyway, C45 steel.
Weight
2,45 kg
In Stock
124
In Stock:
124

32,98 €

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Sprocket 12B-1 (3/4") z=22 with hub, bore 28 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=22 with hub, bore 28 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 22 teeth, pitch 19.05 mm (3/4"), finished bore 28 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 22 teeth, pitch 19.05 mm (3/4"), finished bore 28 mm with keyway, C45 steel.
Weight
2,45 kg
In Stock
142
In Stock:
142

32,98 €

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32,98 €

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Quantity must be included in range 0,01 - 142
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Sprocket 12B-1 (3/4") z=22 with hub, bore 30 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=22 with hub, bore 30 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 22 teeth, pitch 19.05 mm (3/4"), finished bore 30 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 22 teeth, pitch 19.05 mm (3/4"), finished bore 30 mm with keyway, C45 steel.
Weight
2,45 kg
In Stock
162
In Stock:
162

32,98 €

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32,98 €

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Sprocket 12B-1 (3/4") z=22 with hub, bore 32 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=22 with hub, bore 32 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 22 teeth, pitch 19.05 mm (3/4"), finished bore 32 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 22 teeth, pitch 19.05 mm (3/4"), finished bore 32 mm with keyway, C45 steel.
Weight
2,45 kg
In Stock
51
In Stock:
51

32,98 €

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32,98 €

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Sprocket 12B-1 (3/4") z=22 with hub, bore 35 mm with keyway, C45 steel

Sprocket 12B-1 (3/4") z=22 with hub, bore 35 mm with keyway, C45 steel

Sprocket with hub for chain 12B-1, 22 teeth, pitch 19.05 mm (3/4"), finished bore 35 mm with keyway, C45 steel.
Sprocket with hub for chain 12B-1, 22 teeth, pitch 19.05 mm (3/4"), finished bore 35 mm with keyway, C45 steel.
Weight
2,45 kg
In Stock
94
In Stock:
94

32,98 €

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32,98 €

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Quantity must be included in range 0,01 - 94
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