Transmissions
Chain Sprockets
Pilot Bore Sprockets
1.1/4inch Pitch (20B1) Simplex Chain sprockets
Quick Code: BB-20398
20B1-40 Simplex Pilot Bore Sprocket
20B1-40 Simplex Pilot Bore Sprocket
This 20B1-40 Simplex Pilot Bore Sprocket is a precision-engineered component designed for reliable power transmission in industrial applications. As a British standard roller chain sprocket, it is specifically manufactured to work seamlessly with 20B1 simplex roller chains and is ideal for applications requiring higher torque transfer and consistent performance.
Key Specifications:
- 20B1 British standard roller chain sprocket
- 1.1/4 inch pitch with 40 teeth
- Pilot bore size: 25mm
- Outside diameter: 419.8mm
- Boss diameter: 150mm
- Overall length: 55mm
- Brand: Medway
Features & Benefits:
- Pilot bore design allows for precise machining to your exact shaft requirements
- Manufactured to exacting British standards for superior reliability and durability
- 40-tooth configuration provides excellent torque characteristics for demanding industrial applications
- Compatible with 20B1 simplex roller chains
- Robust construction suitable for heavy-duty power transmission systems
Typical Applications:
This sprocket is suitable for use in conveyor systems, agricultural machinery, packaging equipment, industrial power transmission systems, and other applications where higher torque transfer and consistent performance are required with 20B1 simplex chains specified.
Supplied by Medway, a trusted name in power transmission components with fast UK warehouse delivery available. For assistance in selecting the correct sprocket for your specific application, our technical team is here to help.



