Transmissions
Chain Sprockets
Pilot Bore Sprockets
3/4inch Pitch (12B1, 12B2, 12B3) Pilot Bore Sprockets
12B2 - 3/4inch Duplex Chain Sprocket
Quick Code: BB-20633
6DR11 Pilot Bore Chain Sprocket 12B2
The 6DR11 is a premium 12B2 British standard duplex roller chain sprocket manufactured by Medway, engineered for reliable power transmission in demanding industrial applications. Featuring 11 teeth and a 3/4 inch pitch, this compact sprocket delivers exceptional torque capacity while maintaining a space-efficient design ideal for restricted mounting environments.
Designed with a pilot bore (16mm) for versatile installation options, the 6DR11 allows for easy custom machining to achieve precise shaft fitting or accommodation of a taper lock bush for secure, maintenance-free mounting. As a duplex sprocket, it handles significantly higher loads and provides increased power transmission capacity compared to simplex alternatives, thanks to its dual-row chain engagement design.
Key Specifications:
- Chain Standard: 12B2 British Standard Duplex
- Pitch: 3/4 inch (19.05mm)
- Number of Teeth: 11
- Pilot Bore Size: 16mm
- Boss Diameter: 47mm
- Outside Diameter: 75mm
- Overall Length: 50mm
- Manufacturer: Medway
Ideal Applications:
- Conveyor systems and material handling equipment
- Industrial machinery with high-load requirements
- Agricultural machinery and equipment
- Manufacturing and processing equipment
- Compact power transmission drives requiring enhanced load capacity
- Space-constrained installations demanding increased torque transmission
The 6DR11 is fully compatible with standard 12B2 duplex roller chains and conforms to British Standard specifications, ensuring reliable performance and interchangeability across applications.



