Coreless Motor Magnet (material, Performance, Working Temperature) Introduction

What is a coreless magnet?

Before talking about the coreless magnet, let me tell you what is the coreless motor. The coreless motor mainly has no iron core. The wire cup is used as the permanent magnet of the stator as the structure of the rotor. Permanent magnets are also what we often call magnetic rings (rings), because the magnetic ring itself is a hollow product, if it is not hollow, it will not be called a magnetic ring, so it is reasonable to name the hollow cup magnet as a magnetic ring Yes, the common coreless motor models in the market have diameters of Φ4, Φ6, Φ7, Φ8, Φ10, Φ12, Φ15, etc.

What material magnet is used in the coreless motor?

90% of the magnets used in the motor need to be hollow cup-shaped to rotate. Generally, the rare earth NdFeB thin magnetic rings with high temperature resistance, such as N40, N45 and other brand magnets, have high remanence and high coercivity. Force, high magnetic energy product characteristics, temperature resistance at 100° and above.