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Bored & Keyed Sprockets
3/8inch Pitch Bored & Keyed Sprockets
Quick Code: BB-701426
06B1 21T Sprocket Comes With 25mm Bore & Keyway with 2 Grubscrews (3SR21 25BK&2GS)
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Product Specification
Bore
25mm
Number of Teeth
21
Pitch
3/8inch
Reference
3SR21 25BK&2GS SPKT
Quick Order Code
BB-701426
Product Description
The 06B1 21T Sprocket with 25mm Bore & Keyway is a precision-engineered component designed for heavy-duty power transmission in chain drive systems. This sprocket comes pre-machined with a 25mm bored centre hole and integral keyway, along with 2 grubscrews for secure and straightforward shaft mounting.
Key Features:
- Pitch: 3/8 inch (06B1 series)
- Tooth Count: 21 teeth
- Bore Size: 25mm
- Keyway: Pre-machined for easy installation
- Grubscrews: 2x grubscrews included for secure shaft fixing
- Ready-to-Fit: Pre-bored and keyed design eliminates additional machining requirements
Applications:
This sprocket is ideal for use in a wide range of industrial machinery and equipment, including:
- Heavy-duty conveyor systems
- Industrial packaging machinery
- Agricultural equipment and farm machinery
- Industrial chain drive transmission systems with larger shaft requirements
- General power transmission applications requiring robust bore diameters
- Equipment demanding reliable, high-capacity chain engagement
Reference: 3SR21 25BK&2GS SPKT
For assistance in selecting the correct sprocket for your specific chain drive application, our technical sales team is here to help.

