Transmissions
Chain Sprockets
Pilot Bore Sprockets
1inch Pitch (16B1, 16B2, 16B3) Pilot Bore Sprockets
16B1 - 1inch Simplex Chain Sprockets
Quick Code: BB-20331
8SR21 Pilot Bore Sprocket 16B1
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Product Specification
Boss Dia
110mm
Number of Teeth
21
Outside Dia
181.2mm
Overall Length
50mm
Pilot Bore Size
20mm
Pitch
1inch
Reference
8SR21
Brand
Medway
Quick Order Code
BB-20331
Product Description
The 8SR21 Pilot Bore Sprocket 16B1 is a premium quality 1 inch pitch simplex chain sprocket manufactured to British standards by Medway. This precision-engineered sprocket is designed for reliable power transmission in industrial applications requiring smooth, efficient operation.
Specifications:
- 1 inch pitch x 21 teeth
- Pilot bore size: 20mm
- Boss diameter: 110mm
- Outside diameter: 181.2mm
- Overall length: 50mm
- 16B1 British standard compliance
Key Features:
- Precision machined teeth for smooth, efficient power transmission
- Manufactured from quality materials to ensure durability and longevity
- Pilot bore design for secure shaft mounting
- Compact 50mm profile suitable for space-constrained applications
Applications:
This versatile sprocket is ideal for use in industrial power transmission systems, machinery drives, and conveyor systems where a 21-tooth configuration is required for optimal speed ratios and torque characteristics.



