Transmissions
Chain Sprockets
Pilot Bore Sprockets
5/8inch Pitch (10B1, 10B2, 10B3) Pilot Bore Sprockets
10B1 - 5/8inch Simplex Chain Sprocket
Quick Code: BB-20267
5SR31 Pilot Bore Sprocket 10B1
The 5SR31 Pilot Bore Sprocket 10B1 is a precision-engineered British standard roller chain sprocket designed for reliable power transmission in medium to heavy-duty industrial applications. This simplex chain sprocket features a 5/8 inch pitch with 31 teeth, making it ideal for systems requiring balanced speed and torque delivery with excellent load-carrying capacity.
Key Specifications:
- 10B1 British standard roller chain sprocket
- 5/8 inch pitch x 31 teeth
- Boss diameter: 95mm
- Outside diameter: 163.9mm
- Overall length: 35mm
- Pilot bore size: 20mm
Features & Benefits:
- Pilot bore design with 20mm pre-machined bore for easy customization to your specific shaft requirements
- Manufactured by Medway to exacting standards for guaranteed durability and reliable performance
- 31-tooth configuration provides an excellent balance between speed reduction and torque multiplication
- Robust construction suitable for demanding industrial environments
- Larger boss diameter ensures superior strength and stability in high-load applications
Applications:
This sprocket is well-suited for conveyor systems, agricultural equipment, manufacturing machinery, packaging equipment, and other industrial chain drive applications where a 31-tooth configuration is required for optimal performance and load handling.
Part of our comprehensive 10B1 5/8 inch simplex chain sprocket range offering 37 different tooth configurations. For assistance in selecting the correct sprocket for your specific chain drive application, please contact our technical team.



