Transmissions
Chain Sprockets
Pilot Bore Sprockets
3/4inch Pitch (12B1, 12B2, 12B3) Pilot Bore Sprockets
12B3 - 3/4inch Triplex Chain Sprockets
Quick Code: BB-20870
6TR34 Pilot Bore Chain Sprocket 12B3
12B3 British Standard Pilot Bore Chain Sprocket
The 6TR34 is a heavy-duty 12B3 triplex chain sprocket engineered for demanding industrial applications requiring increased load capacity and reliable power transmission. This larger-format pilot bore sprocket delivers smooth, efficient operation in high-torque chain drive systems where consistent performance is essential.
Key Specifications:
- British standard 12B3 triplex chain sprocket
- 3/4 inch pitch
- 34 teeth
- Boss diameter: 130mm
- Outside diameter: 214.6mm
- Overall length: 70mm
- Pilot bore design for custom shaft machining
- Manufactured by Medway to exacting standards
Ideal Applications:
This mid-to-large format sprocket is well-suited for:
- Heavy-duty industrial machinery and equipment
- Large-scale conveyor systems
- Power transmission applications requiring increased torque capacity
- Drive systems where moderate speed and high load capacity are required
- General chain drive applications in demanding industrial environments
The pilot bore design allows for precise custom machining to match your exact shaft dimensions, ensuring optimal performance, longevity, and seamless integration into your existing systems. With 34 teeth, this sprocket offers an excellent balance of torque and speed characteristics, making it a versatile choice for a wide range of heavy-duty applications within the 12B3 triplex chain sprocket range.
Stocked in our UK-based warehouse and ready for rapid dispatch. Contact our technical team for assistance in selecting the correct sprocket configuration for your chain drive system.



