Transmissions
Chain Sprockets
Bored & Keyed Sprockets
5/8inch Pitch Bored & Keyed Sprockets
Quick Code: BB-701322
10B1 25T Sprocket Comes With 40mm Bore & Keyway with 2 Grubscrews (5SR25 40BK&2GS SPKT)
This 10B1 25-tooth sprocket is a precision-engineered power transmission component featuring a 40mm bore with keyway and two grubscrews for secure and reliable shaft mounting. As the highest tooth-count option in our standard range, this sprocket is designed to work seamlessly with 10B1 roller chains and delivers exceptional performance in applications demanding maximum torque transmission and minimal rotational speeds.
Key Specifications:
- 25 teeth – the optimal configuration for maximum torque delivery and lowest speed ratios
- 5/8" pitch – compatible with standard 10B1 roller chains for seamless power transmission
- 40mm bore – precision-machined for accurate shaft fitting on larger diameter applications
- Pre-machined keyway – ensures positive drive engagement and prevents slippage
- Two grubscrews included – provides dual-point clamping for enhanced security, stability, and vibration resistance
- Ready for immediate installation – no additional machining required
Ideal Applications:
This highest tooth-count sprocket is particularly well-suited for applications requiring maximum torque transmission with controlled, reduced rotational speeds, including:
- Heavy-duty conveyor systems requiring maximum pulling force
- Industrial reduction drives and gearbox applications
- Agricultural machinery with high-torque requirements
- Packaging and material handling equipment
- General industrial power transmission with larger shaft requirements
- High-torque, intermediate-duty transmission applications
- Low-speed, high-load power transmission systems
Reference: 5SR25 40BK&2GS SPKT
As part of our extensive range of over 167 10B1 sprocket configurations, this component is stocked in our UK warehouse for fast delivery and competitive pricing. For assistance in confirming this is the correct specification for your application, our technical team is ready to help.

