Transmissions
Chain Sprockets
Bored & Keyed Sprockets
1inch Pitch Bored & Keyed Sprockets
Quick Code: BB-701652
16B1 25T Sprocket Comes With 30mm Bore & Keyway with 2 Grubscrews (8SR25 30BK&2GS)
The 16B1 25T Sprocket is a precision-engineered chain sprocket designed for reliable power transmission in industrial applications. This simplex sprocket features a pre-machined 30mm bore with integrated keyway, making it ideal for secure shaft mounting in drive systems utilizing 1-inch pitch roller chains.
Key Features:
- 25 Teeth – Optimised tooth count for balanced speed and torque characteristics
- 1-inch Pitch – Compatible with standard 1-inch pitch roller chains
- 30mm Bore – Pre-machined to precise tolerances for accurate shaft fit
- Keyway – Integrated keyway ensures positive drive engagement and prevents shaft slippage
- 2 Grub Screws – Dual grub screw fastening system provides enhanced security and prevents axial movement on the shaft
- Manufactured to exacting industrial standards for optimal chain engagement
- Ideal for applications requiring lower speed ratios with consistent torque delivery
Specifications:
- Tooth Count: 25 teeth
- Bore Diameter: 30mm
- Pitch: 1-inch (25.4mm)
- Chain Compatibility: 1-inch pitch roller chains
- Mounting: Keyed bore with 2 grub screws for positive shaft engagement
- Reference: 8SR25 30BK&2GS SPKT
Applications:
This 25-tooth sprocket is well-suited for use in:
- Conveyor systems and material handling equipment
- Agricultural machinery and farm equipment
- Industrial drive systems requiring lower speed transmission ratios with increased torque
- General power transmission applications with mid-range shaft configurations
- Machinery requiring efficient chain drive solutions with reliable torque delivery
Manufactured to precise engineering standards, this sprocket delivers reliable performance and durability in demanding industrial environments. The 30mm bore with keyway ensures precise alignment and secure mounting on mid-sized shafts, while the dual grub screws provide additional holding power to prevent slippage during operation.
As a leading supplier of 1-inch pitch bored and keyed chain sprockets, we maintain extensive stock of over 150 variations. For technical assistance or to confirm compatibility with your specific chain drive system, please contact our technical sales team.

