Stator Rotor

Raytech produces lamination stacks for stator rotors that are fully produced by means of laser cutting and laser welding. Manufactured witch low tolerances, these stacks form the core of the stator and rotor in high-tech motors and resolvers.


Stator Rotor: Specifications

The coated slats are laser cut with tolerances from +/- 0.02 mm.

The aim is to finish the outer diameter of a fully assembled stack with a dimensional tolerance of 40 microns depending on the diameter of the stack. For this, a fiber laser is used that can laser cut and weld quickly and accurately.

By combining laser cutting and laser welding on the same machine, prototypes can be developed quickly. The calibers for meticulously microwelding the coated slats together are also developed and produced in-house, resulting in fast delivery times.

All parts are measured with a 3D measuring machine.

Stacks of all sizes are produced.


Stator Rotor: Materials

Various materials possible, transformer tin (Electroblech) possible (if in stock or to be self-delivered).


Stator Rotor: What is it?

The stator and rotor are both parts of the electric motor. The rotor is the rotating part of the motor and the stator is the stationary part.


An electric motor works by means of magnetism. The main two components of an electric motor are the stator and the rotor.

The stator contains copper windings that become magnetic by applying voltage to them. These windings alternately become magnetic. This creates a magnetic field in the stator. The rotor is pulled to one side via magnetism. As the three windings are successively magnetized, the rotor starts to rotate.

The magnetic field of the stator always spins faster than the rotor (hence an asynchronous motor).

The speed difference between the magnetic fields in the stator and rotor is called slip. This slip creates a tension in the rotor armature in the rotor. Because these armatures are short-circuited, rotor currents are created. The rotor current then creates a magnetic field in the opposite direction, known as rain EMF. Together with the magnetic field in the stator, the magnetic field in the rotor provides the torque provided by the motor.