Ferrite Rotor Magnet with Shaft

Ferrite rotor magnets with shafts are motor rotor assemblies that integrate ferrite permanent magnets with metal shafts (typically stainless steel or carbon steel shafts) through a single-piece molding process. They are commonly used in small DC motors, pump motors, fan motors, and home appliance motors, and may also be referred to as ferrite magnetic assemblies. Below is a detailed introduction to this type of magnet.

Ferrite rotor magnets with shafts are integrated components combining a magnet with a metal shaft. Based on manufacturing processes, they are categorized into two structures: injection-molded ferrite and sintered ferrite. Injection-molded ferrite rotors are formed by mixing ferrite powder with engineering plastics through injection molding. They feature uniform magnetic properties, high dimensional accuracy, and good mechanical strength, making them suitable for small high-speed motors. Sintered ferrite rotors are manufactured through high-temperature sintering, typically in ring or multi-segment arc shapes. They exhibit superior magnetic properties, excellent high-temperature resistance, and lower cost, making them commonly used in water pumps, electric fans, and home appliance motors. Both structures securely bond the magnet to the metal shaft, facilitating assembly and rotation while ensuring stable and reliable motor operation.

The image below shows a ferrite rotor magnet with shaft for injection molding.

Ferrite rotor magnets with shafts offer stable magnetic properties, high cost-effectiveness, and excellent resistance to high temperatures and corrosion. Their integrated design with metal shafts ensures easy installation, smooth operation, and high mechanical strength. Compared to rare-earth magnets, ferrite rotor magnets are more cost-effective, making them ideal for mass production in small appliances, electric pumps, fans, and other motor products requiring both reliability and economic efficiency.

The above covers an introduction to ferrite rotor magnets with shafts. Our company offers both shafted and shaftless multi-pole rotor magnets, not limited to ferrite materials—neodymium materials (sintered or molded) are also available. We welcome inquiries from motor-related customers regarding samples and pricing.

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