The difference and role of brushless motor and brushless motor of nail polish machine

1. Core Differences

Working Mechanism

• Brushed Motor:

  • Uses carbon brushes and a commutator to transmit current, driving the rotor to spin.

  • Friction between brushes and commutator generates sparks and wear during operation.

• Brushless Motor:

  • Relies on electronic commutation (e.g., Hall sensors) and a controller to power coils without physical contact.

  • The rotor is a permanent magnet, and the stator’s magnetic field drives rotation.

Structural Complexity

• Brushed Motor: Simple design, low cost, but prone to wear due to brush-commutator contact.

• Brushless Motor: Requires a precise electronic controller, making it more complex and technically advanced.

2. Performance Comparison

Efficiency & Power

• Brushless Motor:

  • Higher efficiency (80%-90%), less energy loss, minimal heat generation.

  • Stable torque and speed, ideal for prolonged heavy-duty tasks (e.g., thick or acrylic nails).

• Brushed Motor:

  • Lower efficiency (60%-70%), energy wasted as heat and brush friction.

  • Torque drops at high speeds; prone to overheating during extended use.

Noise & Vibration

• Brushless Motor: Quieter (no brush friction), minimal vibration, smoother operation.

• Brushed Motor: Audible brush noise and noticeable vibration, especially at high speeds.

Speed Control

• Brushless Motor: Precise digital speed adjustment, wide RPM range (10,000–35,000 RPM), ideal for detailed work.

• Brushed Motor: Limited speed range; unstable RPM at high speeds due to brush wear.

3. Lifespan & Maintenance

Durability

• Brushless Motor: Longer lifespan (2,000–5,000 hours) with no brush replacement needed.

• Brushed Motor: Brushes require regular replacement (every 500–1,000 hours); shorter overall lifespan.

Maintenance Costs

• Brushless Motor: Nearly maintenance-free, but controller repairs can be costly.

• Brushed Motor: Frequent brush replacement and carbon dust cleanup, but low repair costs.

4. Application Scenarios

Brushless Motor Drills

• Professional Salons: High durability for continuous, heavy use.

• Precision Work: Carving, gel nail removal, or hard material.

• Enhanced Experience: Lightweight, low-noise design reduces hand fatigue.

Brushed Motor Drills

• Home Users: Budget-friendly for occasional use (e.g., basic nail shaping).

• Beginner-Friendly: Suitable for simple tasks with minimal performance demands.

5. Price Difference

• Brushless Motor: 2–3 times more expensive than brushed equivalents due to advanced technology.

• Brushed Motor: Affordable for cost-sensitive buyers.

6. Buying Guide

1. Professionals: Prioritize brushless motors for reliability and efficiency.

2. Casual Users: Brushed motors suffice for occasional, basic needs.

3. Compatibility: Brushless drills may require specific power adapters or controllers.