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.
4.50€ excl. VAT
5.45€ 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.
5.33€ excl. VAT
6.45€ 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.
6.02€ excl. VAT
7.28€ 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.
6.12€ excl. VAT
7.40€ 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.
6.60€ excl. VAT
7.98€ 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.
7.92€ excl. VAT
9.58€ 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.
9.23€ excl. VAT
11.17€ 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.
10.54€ excl. VAT
12.76€ 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.
12.09€ excl. VAT
14.62€ 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.
13.50€ excl. VAT
16.34€ 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.
13.98€ excl. VAT
16.92€ 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.
14.77€ excl. VAT
17.87€ 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.
15.53€ excl. VAT
18.79€ 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.
19.67€ excl. VAT
23.80€ 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.
20.48€ excl. VAT
24.79€ 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.
21.57€ excl. VAT
26.10€ 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.
22.53€ excl. VAT
27.26€ 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.
23.32€ excl. VAT
28.21€ 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.
25.77€ excl. VAT
31.18€ 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.
30.19€ excl. VAT
36.53€ 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)



