Transmissions
Chain Sprockets
Pilot Bore Sprockets
1/2inch Pitch (08B1, 08B2, 08B3) Pilot Bore Sprockets
08B3 - 1/2inch Triplex Chain Sprockets
Quick Code: BB-20786
4TR21 Pilot Bore Chain Sprocket 08B3
The 4TR21 Pilot Bore Chain Sprocket 08B3 is a compact triplex chain sprocket engineered for heavy-duty power transmission applications. This British standard sprocket delivers reliable performance in space-constrained installations where a smaller tooth count is required.
Key Specifications:
- 08B3 British standard roller chain sprocket
- 1/2 inch pitch x 21 teeth
- Outside Diameter: 89.7mm
- Boss Diameter: 70mm
- Pilot Bore Size: 20mm
- Overall Length: 55mm
- Brand: Medway
Ideal Applications:
- Compact industrial machinery and equipment
- High-speed drive systems requiring smaller sprocket diameters
- Conveyor systems with space limitations
- Power transmission systems where quick acceleration is needed
- Heavy-duty applications demanding reliable performance
This pilot bore sprocket is manufactured to the 08B3 British standard specification, ensuring full compatibility with standard 1/2 inch pitch triplex roller chains. The 20mm pilot bore provides a secure fit for reliable torque transmission. As part of Medway's comprehensive range of 08B3 chain sprockets, this 21-tooth model offers the flexibility to match your specific speed ratio and load requirements.
Our technical team is available to assist with sprocket selection and application support. Contact us for further assistance.
