Transmissions
Chain Sprockets
Pilot Bore Sprockets
3/4inch Pitch (12B1, 12B2, 12B3) Pilot Bore Sprockets
12B1 - 3/4inch Simplex Chain Sprockets
Quick Code: BB-20294
6SR21 Pilot Bore Sprocket 12B1
12B1 British Standard Pilot Bore Sprocket
The 6SR21 is a precision-engineered pilot bore sprocket designed for use with 12B1 simplex roller chains. This sprocket features a pilot bore that allows for custom machining to your exact shaft requirements, making it an ideal solution for a wide range of industrial power transmission applications.
Key Specifications:
- Pitch: 3/4 inch
- Number of Teeth: 21
- Boss Diameter: 90mm
- Outside Diameter: 136mm
- Overall Length: 40mm
- Pilot Bore Size: 20mm
- Manufacturer: Medway
- Reference: 6SR21
Applications:
This versatile sprocket is suitable for use in:
- Conveyor systems
- Agricultural equipment
- Packaging machinery
- General industrial power transmission systems
With its 20mm pilot bore and robust construction, the 6SR21 offers excellent flexibility for custom shaft adaptations while maintaining reliable performance in demanding industrial environments. Available for quick dispatch from our UK warehouse, this British Standard sprocket is part of our comprehensive range of 12B1 3/4 inch pitch simplex chain sprockets.



