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:
- 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.)
- Longer Lifespan & Lower Maintenance
- No carbon brushes to replace, reducing wear. Lifespan is 3–10x longer than brushed motors.
- Fewer replaceable parts.
- Cost Savings
- Saves on consumables (e.g., carbon brushes) and reduces downtime for repairs.
- Lower long-term operational costs despite higher upfront price.
- 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.
- 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).
- 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.