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Author: JUFENG Date: Jun 05, 2025

Advantages of our Brushless Angle Grinders

    Nows days the brushless angle ginders are more and more popular, there is trend to replace the traditional grinders with brush, I'd like to list its advantages for reference: 

  1. ​Higher Efficiency & Power Output​

 

  • Eliminates energy loss from brush-commutator friction, improving power output by ~20-30% compared to brushed models.
  • Maintains consistent speed under load with minimal RPM drop. (This is the main advantage of our products.)

 

  1. ​Longer Lifespan & Lower Maintenance​

 

  • No carbon brushes to replace, reducing wear. Lifespan is 3–10x longer than brushed motors.
  • Fewer replaceable parts.

 

  1. ​Cost Savings​

 

  • Saves on consumables (e.g., carbon brushes) and reduces downtime for repairs.
  • Lower long-term operational costs despite higher upfront price.

 

  1. ​Enhanced Safety & Control​

 

  • ​No sparks​​: Safer in flammable environments.
  • ​Soft-start​​: Prevents sudden torque surges, reducing kickback risks.
  • ​Auto-shutdown​​: Stops if power is interrupted, preventing accidental restarts.

 

  1. ​Improved Ergonomics & Performance​

 

  • Lighter weight (e.g., 125mm models replace heavier 150mm brushed units).
  • Adjustable RPM (e.g., 3-speed settings on some certain models).

 

  1. ​Material Savings​

 

  • Reduces disc/abrasive wear by ~15–44% due to stable RPM under load.

  

​​Key Differences​​:

​​Feature​​

​​Brushless​​

​​Brushed​​

​Motor Type​

Electronic commutation (no brushes)

Carbon brushes + commutator

​Torque​

30%+ higher under load

Lower, drops significantly under load

​Noise​

Quieter (no brush friction)

Louder

​Durability​

10,000+ hours

1,000–3,000 hours

 

Trade-offs​

  • ​Disadvantages of Brushless​​: Higher initial cost; complex electronics may require professional repair if damaged.
  • ​Brushed Use Cases​​: Still preferred for low-budget or intermittent tasks where longevity is less critical.

 

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