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Chain Sprockets
Bored & Keyed Sprockets
3/8inch Pitch Bored & Keyed Sprockets
Quick Code: BB-701427
06B1 21T Sprocket Comes With 24mm Bore & Keyway with 2 Grubscrews (3SR21 24BK&2GS)
The 06B1 21T Sprocket with 24mm Bore & Keyway is a precision-engineered component designed for reliable power transmission in chain drive systems. As part of our comprehensive 3/8 inch pitch bored and keyed sprocket range, this 21-tooth sprocket comes pre-machined and ready for installation.
Key Features:
- Pitch: 3/8 inch – standard industrial specification
- Tooth Count: 21 teeth – ideal for balanced speed and torque applications
- Bore Size: 24mm – compatible with larger diameter shafts
- Keyway: Pre-cut keyway for secure alignment and torque transmission
- Grubscrews: Supplied with 2 grubscrews for additional shaft clamping security
- Pre-Machined & Ready-to-Fit: Eliminates additional machining requirements and simplifies installation
Applications:
This sprocket is ideal for use in:
- Conveyor systems and material handling equipment
- Packaging and filling machinery
- Agricultural equipment and farm machinery
- Industrial drive systems requiring balanced speed ratios
- Heavy-duty power transmission applications with larger shaft diameters
- General industrial machinery requiring reliable chain engagement
The combination of a bored centre hole, integrated keyway, and two grubscrews ensures quick and straightforward installation, eliminating the need for additional machining. This ready-to-fit solution provides reliable performance across a wide range of industrial applications.
Reference: 3SR21 24BK&2GS SPKT
For assistance in selecting the correct sprocket specification for your chain drive system, our technical sales team is available to provide expert guidance.

