Transmissions
Chain Sprockets
Pilot Bore Sprockets
1/2inch Pitch (08B1, 08B2, 08B3) Pilot Bore Sprockets
08B3 - 1/2inch Triplex Chain Sprockets
Quick Code: BB-20777
4TR12 Pilot Bore Chain Sprocket 08B3
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Product Specification
Boss Dia
35mm
Number of Teeth
12
Outside Dia
53mm
Overall Length
50mm
Pilot Bore Size
14mm
Pitch
1/2inch
Reference
4TR12
Brand
Medway
Quick Order Code
BB-20777
Product Description
08B3-12 Triplex Chain Sprocket
This compact 12-tooth pilot bore sprocket is engineered to meet British standard 08B3 specifications and is ideal for applications requiring high-speed power transmission with moderate load requirements. The small tooth count makes it particularly suitable for driving or pinion sprocket roles in triplex chain systems.
Key Features:
- 08B3 British standard roller chain sprocket
- 1/2 inch pitch x 12 teeth
- Compact design with 53mm outside diameter
- 14mm pilot bore for secure shaft mounting
- 35mm boss diameter
- 50mm overall length
- Manufactured by trusted brand Medway
Applications:
This sprocket is well-suited for use in:
- High-speed industrial machinery drives
- Conveyor system acceleration stages
- Agricultural and processing equipment
- Power transmission systems where compact pinion sprockets are required
As with all our 08B3 triplex chain sprockets, this component is fully compatible with standard 1/2 inch pitch triplex roller chains. For assistance in selecting the correct sprocket configuration for your specific application, our technical team is available to provide expert guidance.



