Permanent Magnet Rotor

May 10, 2025

The permanent magnet rotor is made of neodymium magnet. They embedded inside the rotor. When the motor stator is energized, a rotating magnetic field is formed, which interacts with the rotor magnetic field to produce an electromagnetic torque that drives the rotor to rotate, thus achieving high efficiency and low energy consumption power output.

Mainly used as the core component of the motor, it is widely used in drive motors, power generation systems and various auxiliary motors of new energy vehicles.

1. Core Advantages

Magnetic Material: High coercivity sintered NdFeB magnet, multiple temperature grades (M/H/SH/UH/EH) optional
Two mature structures: SPM surface mounted for high-speed servo; IPM interior embedded for high torque & overload resistance
Reliable magnet fixation: Adopt adhesive + mechanical limit structure, resist high-speed centrifugal force
Strict dynamic balance calibration, low vibration and low noise during motor operation
Multiple anti-corrosion schemes: Nickel plating, epoxy coating for different working environments
Customized pole number, outer diameter, shaft size, magnet size according to motor design drawing
Low cogging torque optimized magnetic circuit design, smooth torque output
Complete inspection: Magnet flux testing, dimension inspection, high-speed burst test available

2.Application Industries

New Energy Vehicles: Main drive motor, auxiliary motor for passenger & commercial EV
Industrial Automation: AC servo motor, spindle motor for CNC equipment
Energy Saving Equipment: Energy-saving permanent magnet fans, water pump motors, air compressors
Elevator Industry: Elevator traction permanent magnet synchronous motor rotor
Wind Power: Small & medium wind turbine auxiliary generator rotor
Household & Commercial Appliance: High-efficiency rotary compressor motor, washing machine drive motor
Logistics & Robot: AGV drive motor, robot joint servo motor

FAQ

Q1: How to choose magnet surface anti-corrosion coating?

Nickel Plating: General industrial environment, good cost performance.

Epoxy Coating: Moist, weak acid & alkali workshop, prevent oxidation rust.

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