12B-1 Sprockets with Hub and Hardened Teeth for DIN 8187 Roller Chains (B-Series)
12B-1 sprockets with a hub and hardened teeth are designed for drives with all types of 12B-1 (3/4″ × 7/16″) simplex roller chains of the so-called European series (B-series), standardized to ISO 606 (DIN 8187).
Products are sorted by name in ascending order.
12B-1-08-NK (3/4” × 7/16”) - 8 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
4.36€ excl. VAT
5.28€ incl. VAT
12B-1-09-NK (3/4” × 7/16”) - 9 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
5.17€ excl. VAT
6.25€ incl. VAT
12B-1-10-NK (3/4” × 7/16”) - 10 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
5.83€ excl. VAT
7.06€ incl. VAT
12B-1-11-NK (3/4” × 7/16”) - 11 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
5.93€ excl. VAT
7.17€ incl. VAT
12B-1-12-NK (3/4” × 7/16”) - 12 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
6.39€ excl. VAT
7.73€ incl. VAT
12B-1-13-NK (3/4” × 7/16”) - 13 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
7.67€ excl. VAT
9.28€ incl. VAT
12B-1-14-NK (3/4” × 7/16”) - 14 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
8.94€ excl. VAT
10.82€ incl. VAT
12B-1-15-NK (3/4” × 7/16”) - 15 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
10.22€ excl. VAT
12.36€ incl. VAT
12B-1-16-NK (3/4” × 7/16”) - 16 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
11.71€ excl. VAT
14.17€ incl. VAT
12B-1-17-NK (3/4” × 7/16”) - 17 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
13.08€ excl. VAT
15.83€ incl. VAT
12B-1-18-NK (3/4” × 7/16”) - 18 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
13.55€ excl. VAT
16.39€ incl. VAT
12B-1-19-NK (3/4” × 7/16”) - 19 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
14.31€ excl. VAT
17.31€ incl. VAT
12B-1-20-NK (3/4” × 7/16”) - 20 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
15.05€ excl. VAT
18.21€ incl. VAT
12B-1-21-NK (3/4” × 7/16”) - 21 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
19.06€ excl. VAT
23.06€ incl. VAT
12B-1-22-NK (3/4” × 7/16”) - 22 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
19.85€ excl. VAT
24.02€ incl. VAT
12B-1-23-NK (3/4” × 7/16”) - 23 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
20.90€ excl. VAT
25.29€ incl. VAT
12B-1-24-NK (3/4” × 7/16”) - 24 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
21.83€ excl. VAT
26.42€ incl. VAT
12B-1-25-NK (3/4” × 7/16”) - 25 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
22.59€ excl. VAT
27.34€ incl. VAT
12B-1-26-NK (3/4” × 7/16”) - 26 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
24.97€ excl. VAT
30.21€ incl. VAT
12B-1-30-NK (3/4” × 7/16”) - 30 Teeth, with Hub, Hardened Teeth (Steel)
Sprocket
At Supplier
Within 2 Weeks Usual time this product is ready for shipping. Actual availability may vary due to unforeseen circumstances in exceptional cases.
29.25€ excl. VAT
35.40€ incl. VAT
Products are sorted by name in ascending order.
Typical Applications
12B-1 sprockets with a hub and hardened teeth for DIN 8187 chains are designed for general use in light and medium-duty industries.
They are primarily used in drives but can also be utilized for lifting or material transport.
Materials
C43 steel.
Other materials available on request.
Sprocket Code Description
Example:
12B-1-25-NK (3/4″ × 7/16″) - 25 Teeth, with Hub, Hardened Teeth (Steel)
| Code Part | Description |
|---|---|
| 12B |
Chain type |
| 1 |
Simplex design |
| 25 |
Number of teeth |
| NK |
Design with hub and hardened teeth |
| 3/4″ × 7/16″ |
Pitch (in inches) × inner width (in inches) |
| 25 Teeth, with Hub, Hardened Teeth (Steel) |
Sprocket design and material |
Documents for Download
Dimensions and Parameters of 12B Sprockets with Hub and Hardened Teeth for DIN 8187 Roller Chains
TYMA CZ Data Sheets
Czech and English (PDF 751.80 kB)



