Custom Stepping Motor Magnetic Parts Magnet Assembly N35SH N38H N42H BLDC Stator Rotor Magnets Permanent Electric Motor Magnet

The vast majority of Neodymium arc magnet serve as motor magnet. Besides magnetic performance and surface treatment, both shape and structure of the magnet have significantly impacts on the motor performance. It is a challenge for slotted motor to avoid cogging torque caused by interaction between the magnet and the stator tooth. In order to suppress torque ripple, vibration, and noise generated by cogging torque, curved magnet in either frequently-used radial flux motor or axial flux motor can be modified into the skewed shape. Eddy current is generally leading the temperature rise in the permanent magnet and caused demagnetization. Hence decreased the working efficiency of the motor. Laminated arc magnet which made by bonding several pieced of thin magnet together can dramatically reduce the eddy current loss without replacing the original structure and performance of the motor.

# Temperature resistance - Magnet Grade N42, maximum operating temperature is 80°C/176°F. Temperature is the first factor you must consider when choosing a magnet, to ensure you choose the suitable magnet, please contact our engineers for details.

# Premium Coating - This Ndfeb magnet is protected by a corrosion-resistant nickel-chromium alloy coating, creating a high-quality silver appearance that won't rust or scratch. Nickel-cobalt coating is one of the most popular surface treatments for Ndfeb magnets. We can provide other coatings. Such as nickel copper nickel, epoxy resin, zinc, gold, and so on.

Magnetization Direction

The magnet will display or release some of its conserved energy when pulling towards or attaching to something then conserve or store the energy that the user exerts when pulling it off. Every magnet has a north seeking and a south seeking face on opposite ends. The north face of one magnet will always be attracted towards the south face of another magnet.

Common direction of magnetization showed in picture bellow: 

1> Disc, cylinder and Ring shape magnet can be magnetized Axially or Diametrically.

2> Rectangle shape magnets can be magnetized through Thickness, Length or Width.

3> Arc shape magnets can be magnetized Diametrically, through Width or Thickness.