12B-3 Taper Lock Sprockets for DIN 8187 Roller Chains (B Series)
12B-3 taper bored sprockets are designed for drives with all types of 12B-3 (3/4″ × 7/16″) triplex roller chains of the so-called European series (B series), standardized to ISO 606 (DIN 8187).
The sprockets are mounted on the shaft using Taper Lock bushes, which ensure a secure and precise fit. Additionally, the keyway provides reliable axial fixation against displacement.
Products are sorted by name in ascending order.
12B-3-15-T (3/4 × 7/16) - 15 Teeth, TB 1615 (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.
24.65€ excl. VAT
29.82€ incl. VAT
12B-3-16-T (3/4 × 7/16) - 16 Teeth, TB 1615 (Steel)
Sprocket
Sold Out The goods are currently unavailable. We do not have information about the date of its future availability yet. Therefore, it is not possible to order.
Price is Unavailable
12B-3-17-T (3/4 × 7/16) - 17 Teeth, TB 2012 (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.
30.52€ excl. VAT
36.93€ incl. VAT
12B-3-18-T (3/4 × 7/16) - 18 Teeth, TB 2012 (Steel)
Sprocket
Sold Out The goods are currently unavailable. We do not have information about the date of its future availability yet. Therefore, it is not possible to order.
Price is Unavailable
12B-3-19-T (3/4 × 7/16) - 19 Teeth, TB 2012 (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.
37.63€ excl. VAT
45.54€ incl. VAT
12B-3-20-T (3/4 × 7/16) - 20 Teeth, TB 2012 (Steel)
Sprocket
Sold Out The goods are currently unavailable. We do not have information about the date of its future availability yet. Therefore, it is not possible to order.
Price is Unavailable
12B-3-21-T (3/4 × 7/16) - 21 Teeth, TB 2517 (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.
44.86€ excl. VAT
54.28€ incl. VAT
12B-3-22-T (3/4 × 7/16) - 22 Teeth, TB 2517 (Steel)
Sprocket
Sold Out The goods are currently unavailable. We do not have information about the date of its future availability yet. Therefore, it is not possible to order.
Price is Unavailable
12B-3-23-T (3/4 × 7/16) - 23 Teeth, TB 2517 (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.
53.51€ excl. VAT
64.75€ incl. VAT
12B-3-24-T (3/4 × 7/16) - 24 Teeth, TB 2517 (Steel)
Sprocket
Sold Out The goods are currently unavailable. We do not have information about the date of its future availability yet. Therefore, it is not possible to order.
Price is Unavailable
12B-3-25-T (3/4 × 7/16) - 25 Teeth, TB 2517 (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.
61.45€ excl. VAT
74.35€ incl. VAT
12B-3-26-T (3/4 × 7/16) - 26 Teeth, TB 2517 (Steel)
Sprocket
Sold Out The goods are currently unavailable. We do not have information about the date of its future availability yet. Therefore, it is not possible to order.
Price is Unavailable
12B-3-27-T (3/4 × 7/16) - 27 Teeth, TB 3020 (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.
72.62€ excl. VAT
87.87€ incl. VAT
12B-3-28-T (3/4 × 7/16) - 28 Teeth, TB 3020 (Steel)
Sprocket
Sold Out The goods are currently unavailable. We do not have information about the date of its future availability yet. Therefore, it is not possible to order.
Price is Unavailable
12B-3-29-T (3/4 × 7/16) - 29 Teeth, TB 3020 (Steel)
Sprocket
Sold Out The goods are currently unavailable. We do not have information about the date of its future availability yet. Therefore, it is not possible to order.
Price is Unavailable
12B-3-30-T (3/4 × 7/16) - 30 Teeth, TB 3020 (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.
88.45€ excl. VAT
107.02€ incl. VAT
12B-3-38-T (3/4 × 7/16) - 38 Teeth, TB 3020 (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.
137.94€ excl. VAT
166.91€ incl. VAT
12B-3-40-T (3/4 × 7/16) - 40 Teeth, TB 3030 (Steel)
Sprocket
Sold Out The goods are currently unavailable. We do not have information about the date of its future availability yet. Therefore, it is not possible to order.
Price is Unavailable
12B-3-45-T (3/4 × 7/16) - 45 Teeth, TB 3030 (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.
196.64€ excl. VAT
237.93€ incl. VAT
12B-3-57-T (3/4 × 7/16) - 57 Teeth, TB 3030 (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.
309.12€ excl. VAT
374.03€ incl. VAT
Products are sorted by name in ascending order.
Sprockets Fields of Use
12B-3 taper bored sprockets are designed for general use in light and heavy industry.
They are used in drives, but can also be used for lifting or transporting material.
Sprockets Material
C43 steel or grey cast iron.
Other materials available on request.
Sprockets Code Description
Example:
12B-3-21-T (3/4 × 7/16) - 21 Teeth, TB 2517 (Steel)
| Code Part | Description |
|---|---|
| 12B |
Type of chain |
| 3 |
Triplex design |
| 21 |
Number of teeth |
| T |
Design with tapered bore (Taper Lock) |
| 3/4 × 7/16 |
Pitch in inches × inner width in inches |
| 21 Teeth, TB 2517 (Steel) |
Sprocket design, Taper Lock bush type and material of the sprocket |
Documents for Download
Dimensions and Parameters of 12B Taper Bored Sprockets for DIN 8187 Roller Chains
TYMA CZ Data Sheets
Czech and English (PDF 176.29 kB)
Related Products
Taper Lock Bushes
Taper Lock bushes with finished metric or inch bore and keyway to fixing components to a mating shaft without using any special tools.
12B-3 Plate Wheels for DIN 8187 Roller Chains (B Series)
12B Drive Roller Chains
Dimensions in inches: 3/4" × 29/64"
Universal Chain Tensioners
Sliding blocks, sprockets with screw and idler sprockets for tensioning of industrial roller chains during operation.
