Transmissions
Chain Sprockets
Pilot Bore Sprockets
1.1/4inch Pitch (20B1) Simplex Chain sprockets
Quick Code: BB-20369
20B1-18 Simplex Pilot Bore Sprocket
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Product Specification
Boss Dia
120mm
Number of Teeth
18
Outside Dia
198mm
Overall Length
50mm
Pilot Bore Size
20mm
Pitch
1.1/4inch
Brand
Medway
Quick Order Code
BB-20369
Product Description
20B1-18 Simplex Pilot Bore Sprocket
A precision-engineered British standard roller chain sprocket designed for reliable power transmission in industrial applications. This 20B1 simplex sprocket features a 1.1/4inch pitch with 18 teeth, making it ideal for moderate-speed drive systems requiring consistent performance.
Key Specifications:
- 20B1 British standard roller chain sprocket
- 1.1/4inch pitch x 18 teeth
- Outside diameter: 198mm
- Boss diameter: 120mm
- Pilot bore size: 20mm (allows for precise machining to your exact shaft requirements)
- Overall length: 50mm
Applications:
Ideal for use in conveyor systems, agricultural machinery, industrial equipment, and other power transmission applications where reliable chain drive performance is essential.
Benefits:
- Manufactured to exacting standards for optimal performance and durability
- Pilot bore design enables customization to your specific shaft size
- Part of our comprehensive 20B1 simplex sprocket range (8-76 teeth available)
- Stocked in our UK warehouse for fast delivery
- Supplied by Medway, a trusted name in power transmission components
For technical assistance in selecting the correct sprocket for your application, our technical team is ready to help.



