Choosing the Right Fan Motor: 

Key Considerations

Introduction

When selecting a fan motor, two primary factors stand out: durability and noise control. Wind speed and noise levels are crucial in the fan industry, with noise often originating from motor startup and material choices.

Types of Fan Motors

Motors generally fall into several categories:

• All-Aluminium Motors with Oil Bearings

• Copper-Clad Aluminium Motors with Oil Bearings

• All-Copper Motors with Oil Bearings

• All-Copper Motors with Ball Bearings

• High-End Brushless Motors

Each type varies significantly in cost and suitability for different markets.

Commonly Used Motors

Through extensive testing, we find that the most commonly used motors are:

1. All-Aluminium Motors with Oil Bearings

2. Copper-Clad Aluminium Motors with Oil Bearings

3. All-Copper Motors with Oil Bearings

Noise Levels in Fan Motors

Noise levels are categorized as follows:

• (0-30dB): Very Quiet

• (30-40dB): Ideal for Quiet Environments

• (40-60dB): Suitable for General Conversation

For bedroom fans, a noise level below 45dB is ideal. 

Thus, we recommend all-copper motors with oil bearings (35-45dB).

Choosing Motors for Different Environments

For daytime use in public spaces—like libraries and auditoriums—where noise tolerance is lower, all-aluminium or copper-clad aluminium motors are preferable. These can maintain noise levels under 55dB at maximum wind speed, remaining comfortable for users.

Durability of Fan Motors

In terms of durability, copper wire motors excel with higher electrical conductivity, generating less heat, making them ideal for high-power or industrial fans. 

They typically last over five years. 

Conversely, all-aluminium motors, while cost-effective, have a shorter lifespan of about 1-3 years due to greater heat generation.

Visual Identification of Motors

To distinguish between aluminium and copper motors visually, note that red coils indicate aluminium and orange coils signify copper.

Conclusion

When sourcing fans, select products compatible with local pricing and usage needs. Given that motors significantly impact overall cost, choosing the right type is essential. For tailored solutions, please contact our sales team to discuss your specific requirements.