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12B-2 hardened hub sprockets

12B-2 hardened hub sprockets have two tooth rims for duplex 12B-2 chain of 3/4" (19.05 mm) pitch to DIN 8187 / ISO 606. The teeth on both rims are induction-hardened.

12B-2 hardened sprocket - less downtime under high loads

A duplex chain transmits high power, and a hardened driving sprocket keeps pace with it in durability - meaning less downtime in machines working under high loads. The C45 steel hub remains soft and is easy to machine for the shaft.

12B-2 hardened duplex sprockets in C45 steel

12B-2 duplex sprockets in C45 steel with teeth hardened to 45-55 HRC, in a choice of tooth counts typical of driving sprockets. 12B duplex sprockets with unhardened teeth can be found in the Hub sprockets group, and a finished bore sprocket - in the Finished bore sprockets group.

Frequently asked questions about 12B-2 hardened sprockets

Are both rims hardened in a duplex sprocket?

Yes. The teeth on both rims are hardened, so both chain strands run on equally hard teeth.

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Sprocket 12B-2 z=10 with hub, hardened

Sprocket 12B-2 z=10 with hub, hardened

Sprocket 12B-2 z=10 with hub, hardened
Sprocket 12B-2 z=10, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 12 mm, hub 42 mm.
Sprocket 12B-2 z=10, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 12 mm, hub 42 mm.
Weight
0,65 kg
In Stock
41
In Stock:
41

8,01 €

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8,01 €

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Sprocket 12B-2 z=11 with hub, hardened

Sprocket 12B-2 z=11 with hub, hardened

Sprocket 12B-2 z=11, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 16 mm, hub 47 mm.
Sprocket 12B-2 z=11, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 16 mm, hub 47 mm.
Weight
0,8 kg
In Stock
132
In Stock:
132

9,71 €

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9,71 €

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Sprocket 12B-2 z=12 with hub, hardened

Sprocket 12B-2 z=12 with hub, hardened

Sprocket 12B-2 z=12, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 16 mm, hub 53 mm.
Sprocket 12B-2 z=12, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 16 mm, hub 53 mm.
Weight
1,03 kg
In Stock
790
In Stock:
790

11,54 €

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11,54 €

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Sprocket 12B-2 z=13 with hub, hardened

Sprocket 12B-2 z=13 with hub, hardened

Sprocket 12B-2 z=13, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 16 mm, hub 59 mm.
Sprocket 12B-2 z=13, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 16 mm, hub 59 mm.
Weight
1,25 kg
In Stock
514
In Stock:
514

13,37 €

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13,37 €

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Sprocket 12B-2 z=14 with hub, hardened

Sprocket 12B-2 z=14 with hub, hardened

Sprocket 12B-2 z=14 with hub, hardened
Sprocket 12B-2 z=14, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 16 mm, hub 65 mm.
Sprocket 12B-2 z=14, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 16 mm, hub 65 mm.
Weight
1,5 kg
In Stock
648
In Stock:
648

15,46 €

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15,46 €

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Sprocket 12B-2 z=15 with hub, hardened

Sprocket 12B-2 z=15 with hub, hardened

Sprocket 12B-2 z=15 with hub, hardened
Sprocket 12B-2 z=15, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 16 mm, hub 71 mm.
Sprocket 12B-2 z=15, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 16 mm, hub 71 mm.
Weight
1,78 kg
In Stock
441
In Stock:
441

17,46 €

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17,46 €

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Sprocket 12B-2 z=16 with hub, hardened

Sprocket 12B-2 z=16 with hub, hardened

Sprocket 12B-2 z=16 with hub, hardened
Sprocket 12B-2 z=16, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 77 mm.
Sprocket 12B-2 z=16, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 77 mm.
Weight
2,05 kg
In Stock
690
In Stock:
690

19,77 €

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19,77 €

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Sprocket 12B-2 z=17 with hub, hardened

Sprocket 12B-2 z=17 with hub, hardened

Sprocket 12B-2 z=17 with hub, hardened
Sprocket 12B-2 z=17, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 83 mm.
Sprocket 12B-2 z=17, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 83 mm.
Weight
2,4 kg
In Stock
637
In Stock:
637

22,16 €

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22,16 €

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Sprocket 12B-2 z=18 with hub, hardened

Sprocket 12B-2 z=18 with hub, hardened

Sprocket 12B-2 z=18, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 89 mm.
Sprocket 12B-2 z=18, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 89 mm.
Weight
2,7 kg
In Stock
699
In Stock:
699

24,89 €

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24,89 €

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Sprocket 12B-2 z=19 with hub, hardened

Sprocket 12B-2 z=19 with hub, hardened

Sprocket 12B-2 z=19 with hub, hardened
Sprocket 12B-2 z=19, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 95 mm.
Sprocket 12B-2 z=19, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 95 mm.
Weight
3,1 kg
In Stock
195
In Stock:
195

27,56 €

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27,56 €

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Sprocket 12B-2 z=20 with hub, hardened

Sprocket 12B-2 z=20 with hub, hardened

Sprocket 12B-2 z=20 with hub, hardened
Sprocket 12B-2 z=20, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 100 mm.
Sprocket 12B-2 z=20, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 100 mm.
Weight
3,43 kg
In Stock
274
In Stock:
274

30,28 €

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30,28 €

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Sprocket 12B-2 z=21 with hub, hardened

Sprocket 12B-2 z=21 with hub, hardened

Sprocket 12B-2 z=21 with hub, hardened
Sprocket 12B-2 z=21, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 100 mm.
Sprocket 12B-2 z=21, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 100 mm.
Weight
3,7 kg
In Stock
258
In Stock:
258

32,56 €

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32,56 €

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Sprocket 12B-2 z=22 with hub, hardened

Sprocket 12B-2 z=22 with hub, hardened

Sprocket 12B-2 z=22 with hub, hardened
Sprocket 12B-2 z=22, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 100 mm.
Sprocket 12B-2 z=22, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 100 mm.
Weight
3,9 kg
In Stock
281
In Stock:
281

34,65 €

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34,65 €

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Sprocket 12B-2 z=23 with hub, hardened

Sprocket 12B-2 z=23 with hub, hardened

Sprocket 12B-2 z=23 with hub, hardened
Sprocket 12B-2 z=23, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 100 mm.
Sprocket 12B-2 z=23, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 100 mm.
Weight
4,55 kg
In Stock
75
In Stock:
75

38,48 €

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38,48 €

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Sprocket 12B-2 z=24 with hub, hardened

Sprocket 12B-2 z=24 with hub, hardened

Sprocket 12B-2 z=24 with hub, hardened
Sprocket 12B-2 z=24, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 100 mm.
Sprocket 12B-2 z=24, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 100 mm.
Weight
4,85 kg
In Stock
136
In Stock:
136

40,79 €

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40,79 €

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Sprocket 12B-2 z=25 with hub, hardened

Sprocket 12B-2 z=25 with hub, hardened

Sprocket 12B-2 z=25 with hub, hardened
Sprocket 12B-2 z=25, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 120 mm.
Sprocket 12B-2 z=25, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 120 mm.
Weight
5,45 kg
In Stock
62
In Stock:
62

44,94 €

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44,94 €

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Sprocket 12B-2 z=26 with hub, hardened

Sprocket 12B-2 z=26 with hub, hardened

Sprocket 12B-2 z=26 with hub, hardened
Sprocket 12B-2 z=26, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 120 mm.
Sprocket 12B-2 z=26, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 120 mm.
Weight
5,74 kg
In Stock
54
In Stock:
54

47,41 €

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47,41 €

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Sprocket 12B-2 z=27 with hub, hardened

Sprocket 12B-2 z=27 with hub, hardened

Sprocket 12B-2 z=27 with hub, hardened
Sprocket 12B-2 z=27, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 120 mm.
Sprocket 12B-2 z=27, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 120 mm.
Weight
6,15 kg
In Stock
82
In Stock:
82

50,25 €

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50,25 €

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Sprocket 12B-2 z=28 with hub, hardened

Sprocket 12B-2 z=28 with hub, hardened

Sprocket 12B-2 z=28 with hub, hardened
Sprocket 12B-2 z=28, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 120 mm.
Sprocket 12B-2 z=28, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 120 mm.
Weight
6,45 kg
In Stock
39
In Stock:
39

53,20 €

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53,20 €

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Sprocket 12B-2 z=30 with hub, hardened

Sprocket 12B-2 z=30 with hub, hardened

Sprocket 12B-2 z=30 with hub, hardened
Sprocket 12B-2 z=30, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 120 mm.
Sprocket 12B-2 z=30, hub hardened to 45-55 HRC. Chain 3/4" (19.05 mm), DIN 8187 B series. Pilot bore 20 mm, hub 120 mm.
Weight
7,2 kg
In Stock
149
In Stock:
149

59,67 €

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59,67 €

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