12B Taper Lock Double-Single Sprockets for 2 Simplex DIN 8187 Roller Chains (B-Series)
12B taper bored double-single sprockets are designed for a pair of 12B-1 (3/4″ × 7/16″) simplex roller chains of the so-called European series (B-series), standardized to ISO 606 (DIN 8187).
Sprockets in the double-single design replace 2 simplex sprockets, simplifying installation, saving space on the shaft, and increasing transmission reliability. The shared hub also minimizes the risk of misalignment. They 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-1-13-DT (3/4” × 7/16”) - 13 Teeth, for 2 Simplex Chains, TB 1210 (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.
504,50CZK excl. VAT
610,40CZK incl. VAT
12B-1-14-DT (3/4” × 7/16”) - 14 Teeth, for 2 Simplex Chains, TB 1210 (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.
578,50CZK excl. VAT
700,00CZK incl. VAT
12B-1-15-DT (3/4” × 7/16”) - 15 Teeth, for 2 Simplex Chains, TB 1610 (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.
653,80CZK excl. VAT
791,00CZK incl. VAT
12B-1-16-DT (3/4” × 7/16”) - 16 Teeth, for 2 Simplex Chains, TB 1610 (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.
737,20CZK excl. VAT
892,00CZK incl. VAT
12B-1-17-DT (3/4” × 7/16”) - 17 Teeth, for 2 Simplex Chains, TB 1610 (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.
801,70CZK excl. VAT
970,10CZK incl. VAT
12B-1-18-DT (3/4” × 7/16”) - 18 Teeth, for 2 Simplex Chains, 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.
894,00CZK excl. VAT
1 081,70CZK incl. VAT
12B-1-19-DT (3/4” × 7/16”) - 19 Teeth, for 2 Simplex Chains, 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.
984,10CZK excl. VAT
1 190,80CZK incl. VAT
12B-1-20-DT (3/4” × 7/16”) - 20 Teeth, for 2 Simplex Chains, 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.
1 070,00CZK excl. VAT
1 294,70CZK incl. VAT
12B-1-21-DT (3/4” × 7/16”) - 21 Teeth, for 2 Simplex Chains, 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.
1 173,20CZK excl. VAT
1 419,50CZK incl. VAT
12B-1-23-DT (3/4” × 7/16”) - 23 Teeth, for 2 Simplex Chains, 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.
1 399,00CZK excl. VAT
1 692,70CZK incl. VAT
12B-1-25-DT (3/4” × 7/16”) - 25 Teeth, for 2 Simplex Chains, 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.
1 620,40CZK excl. VAT
1 960,70CZK incl. VAT
Products are sorted by name in ascending order.
Sprockets Fields of Use
12B double-single sprockets are designed for use in conveyor systems.
They are commonly used in equipment where shafts or rollers are driven in series, particularly in roller conveyors, packaging machines, processing lines, and many other types of equipment.
Sprockets Material
C43 steel.
Other materials available on request.
Sprockets Code Description
Example:
12B-1-15-DT (3/4″ × 7/16″) - 15 Teeth, for 2 Simplex Chains, TB 1610 (Steel)
| Code Part | Description |
|---|---|
| 12B |
Type of chain |
| 1 |
Simplex chain |
| 15 |
Number of teeth |
| DT |
Double-single design – for 2 simplex roller chains; design with tapered bore (Taper Lock) |
| 3/4″ × 7/16″ |
Pitch in inches × inner width in inches |
| 15 Teeth, for 2 Simplex Chains, TB 1610 (Steel) |
Sprocket design, Taper Lock bush type and material of the sprocket |
Documents for Download
Dimensions and Parameters of Taper Bored Double-Single Sprockets for 2 DIN 8187 Roller Chains
TYMA CZ Data Sheets
Czech and English (PDF 172.28 kB)
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