Silicon steel rotor iron core for motors

Rotor Core

Rotor core stacking process is similar to the Stator Core stacking. Most Motor Rotor fabrication does not need welding techniques. After the rotor laminations are stacked, copper or aluminum circuits or permanent magnets will be embedded according to the design requirements. We are able to provide all types of Rotor Assembly for medium-to-high voltage motors and generators. 

If the rotor is skewed design, the mandrel must have a corresponding key. Just like the stacking of the stator, the Rotor Lamination cannot deviate when it is pressed by the hydraulic press, otherwise the actual size of the rotor slot will change less than the design size, which will make the magnet or conductor bars inserting more difficult.

The punching steps of stacking riveting are all completed on the blanking station of stator and rotor. The main parts of the progressive die, the punch and the concave die, are made of cemented carbide materials, which can be punched more than 1.5 million times each time the cutting edge is sharpened, and the total life of the die is more than 120 million times.

The rotor cores we currently produce are mainly Cast Aluminum Rotors and Copper Rotors With Shafts. The lamination stacking process of the cast aluminum rotor needs to use a high-precision mandrel during the lamination process.