Ι What Are Ceiling Fan Motor Magnets?
A ceiling fan is a fan mounted on the ceiling of a room or space, usually electrically powered, that uses hub-mounted rotating blades to circulate air. Unlike air-conditioning equipment, ceiling fans do not reduce air temperature or relative humidity. Instead, they effectively cool people by increasing air speed, creating a cooling effect through enhanced sweat evaporation and improved heat exchange via convection.
The key components of a ceiling fan include the base plate, motor, and blades. Ceiling fans today use either traditional AC motors or modern brushless direct current (BLDC) motors. Fans with BLDC technology offer much higher efficiency than those driven by AC motors. BLDC motors are quieter due to electronic commutation and the use of permanent magnet rotors, and they generate less rotor heat. They also enable advanced features such as remote controls and smart home integration.
Ceiling fan motor magnets specifically refer to the magnets used in the magnetic rotor assemblies of BLDC motors. These magnets are essential for creating the electromagnetic field required for efficient motor operation, making them a critical component of BLDC ceiling fans.
Types of Ceiling Fan Motor Magnets
BLDC ceiling fan motor magnets are typically ring-shaped and are mainly of two types: injection ferrite magnets and plastic integrated ferrite magnets. Injection ferrite magnets are bonded magnets produced by embedding ferrite powder in a thermoplastic binder and molding them into multipole ring shapes.
Plastic integrated ferrite magnets, on the other hand, are made by partially encapsulating several ferrite arc magnets in plastic using an insert molding process. This method reduces assembly and labor costs while providing additional mechanical strength.
The same ceiling fan motor model often comes in two versions based on the type of magnet used. Although both magnets share similar dimensions, plastic integrated ferrite magnets offer significantly higher magnetic performance, making them ideal for high-load motor versions. However, this enhanced performance comes at a higher cost, whereas injection ferrite magnets remain more suitable for standard applications.
Specifications of Ceiling Fan Motor Magnets We Offer
We offer a comprehensive range of commonly used magnet sizes, spanning from small to large, to meet the diverse specifications and performance requirements of various BLDC ceiling fan motors. In addition, we provide customization options, enabling tailored solutions for specific customer needs, including adjustments in size or magnetic performance, ensuring an optimal fit with motor designs. With a focus on delivering high-quality products and exceptional service, we aim to be the preferred supplier for fan manufacturers globally.
| Dimension | Type | Number of poles |
| OD58-59.3 x ID49-53.2 x H14-20.5 | Injection ferrite magnets | 10 |
| OD63.2 x ID53 x H18 | Injection ferrite magnets | 10 |
| OD88.4 x ID76 x H20 | Plastic integrated ferrite magnets | 16 |
| OD96.7 x ID86.5 x H28-30 | Plastic integrated ferrite magnets | 12 |
| OD97.4 x ID86.2 x H22-27 | Plastic integrated ferrite magnets | 14 |
| OD102.8 x ID86.1 x H25 | Injection ferrite magnets | 10 |
| OD103 x ID88.5 x H28 | Injection ferrite magnets | 8 |
| OD110 x ID91.5 x H28 | Injection ferrite magnets | 16 |
| OD111 x ID100 x H30-34 | Plastic integrated ferrite magnets | 10 |
| OD120.9 x ID91.6 x H37-51 | Plastic integrated ferrite magnets | 8 |
| OD120.9 x ID91.6 x H38-41 | Injection ferrite magnets | 16 |
| OD122.2 x ID100.5 x H47 | Injection ferrite magnets | 14 |
| OD137.4 x ID121.5 x H34 | Injection ferrite magnets | 8 |
| OD150-152.4 x ID134.2-134.3 x H28-39 | Plastic integrated ferrite magnets | 16 |
| OD152.2-154.8 x ID134.0-134.4 x H20-35 | Plastic integrated ferrite magnets | 8 |
| OD152-152.6 x ID131.1-133.8 x H13-40 | Injection ferrite magnets | 16 |
| OD152.6 x ID133.7 x H18-39 | Injection ferrite magnets | 8 |
| OD194 x ID131 x H18-28 | Injection ferrite magnets | 16 |
