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Chain Sprockets
Bored & Keyed Sprockets
3/8inch Pitch Bored & Keyed Sprockets
Quick Code: BB-701431
06B1 21T Sprocket Comes With 18mm Bore & Keyway with 2 Grubscrews (3SR21 18BK&2GS)
The 06B1 21T Sprocket with 18mm Bore & Keyway is a precision-engineered component designed for reliable power transmission in chain drive systems. This sprocket comes pre-fitted with a keyway and two grubscrews, ensuring secure and straightforward shaft mounting without additional machining requirements.
Key Specifications:
- Tooth Count: 21 teeth
- Pitch: 3/8 inch
- Bore Size: 18mm
- Keyway: Pre-machined for positive shaft drive engagement
- Grubscrews: 2 included for secure fastening
- Reference: 3SR21 18BK&2GS SPKT
Key Features:
- Tooth count ideally suited for balanced speed and torque applications
- 18mm bore diameter appropriate for medium to larger shaft applications
- Pre-machined keyway for positive shaft drive engagement
- 2x grubscrews included for secure fastening and easy installation
- 06B1 series proven reliability in demanding industrial applications
Applications:
This versatile sprocket is ideal for use in:
- Conveyor systems and material handling equipment
- Packaging machinery and automation equipment
- Agricultural equipment
- Industrial drive systems requiring moderate to high speed and torque ratios
- Power transmission systems where reliable mid-range to high performance is essential
- General industrial chain drive applications
The ready-to-fit design minimizes installation time, making it an excellent choice for maintenance and replacement applications. As part of our extensive 06B1 series range, this sprocket delivers consistent performance and reliability across diverse industrial applications.
Need assistance selecting the right sprocket for your application? Our technical sales team is available to provide expert guidance and support.

