Transmissions
Chain Sprockets
Pilot Bore Sprockets
1/2inch Pitch (08B1, 08B2, 08B3) Pilot Bore Sprockets
08B1 - 1/2inch Simplex Chain Sprockets
Quick Code: BB-20237
4SR38 Pilot Bore Sprocket 08B1
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Product Specification
Boss Dia
90mm
Number of Teeth
38
Outside Dia
158.6mm
Overall Length
35mm
Pilot Bore Size
16mm
Pitch
1/2inch
Reference
4SR38
Brand
Medway
Quick Order Code
BB-20237
Product Description
4SR38 Pilot Bore Sprocket 08B1 – 38 Tooth Simplex Chain Sprocket
The 4SR38 Pilot Bore Sprocket 08B1 is a premium British standard roller chain sprocket manufactured by Medway, engineered for reliable power transmission in heavy-duty industrial and mechanical applications. With its 38-tooth configuration, this sprocket is ideal for low-speed, high-torque drive systems.
Key Specifications:
- 08B1 British standard roller chain sprocket
- 1/2 inch pitch x 38 teeth
- Boss diameter: 90mm
- Outside diameter: 158.6mm
- Overall length: 35mm
- Pilot bore size: 16mm
- Brand: Medway
Product Benefits:
- Manufactured to British standards for consistent performance and reliability
- Large 38-tooth configuration provides optimal torque multiplication for demanding applications
- Robust construction with 90mm boss diameter ensures secure mounting and stability
- 16mm pilot bore accommodates larger shafts for heavy-duty operations
- Durable design suitable for continuous industrial operation
- Compatible with all 08B1 simplex roller chains
Typical Applications:
This sprocket is ideal for use in heavy-duty conveyor systems, industrial machinery drives, agricultural equipment, mining applications, and general industrial power transmission where high torque and reliable chain drive performance are essential.



