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Transmissions Chain Sprockets Bored & Keyed Sprockets 1/2inch Pitch Bored & Keyed Sprockets
Quick Code: BB-701025

08B1 21T Sprocket Comes With 20mm Bore & Keyway with 2 Grubscrews (4SR21 20BK&2GS)

£23.91 exc VAT (£28.69 inc VAT)
In Stock   Free Delivery over £100   Next Day Order by 4pm
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Product Specification
Bore
20mm
Number of Teeth
21
Pitch
1/2inch
Reference
4SR21 20BK&2GS SPKT
Quick Order Code
BB-701025
Product Description

The 08B1 21T Sprocket with 20mm Bore & Keyway is a precision-engineered chain sprocket designed for reliable power transmission in industrial applications. This sprocket features a 1/2 inch pitch and comes complete with pre-machined specifications to simplify installation and reduce setup time.

Key Features:

  • Tooth Count: 21 teeth for balanced speed and torque ratios
  • Bore Diameter: 20mm pre-machined bore
  • Keyway: Integrated keyway for secure shaft coupling
  • Grubscrews: Supplied with 2 grubscrews for dual-point shaft locking
  • Pitch: 1/2 inch pitch chain compatibility
  • Ready to Install: No additional machining required

Applications:

This versatile sprocket is ideal for use in:

  • Conveyor systems
  • Packaging machinery
  • Agricultural equipment
  • General industrial power transmission systems
  • Chain drive replacements and new system designs

The 21-tooth configuration makes this sprocket particularly suitable for applications requiring a balanced combination of speed and torque delivery. As part of our comprehensive range of 1/2 inch pitch bored and keyed sprockets, this product ensures compatibility across your power transmission systems while delivering the precision and durability required for demanding industrial environments.

Reference: 4SR21 20BK&2GS SPKT