Electric Steel as of 0.1mm thick
Raytech cuts and produces various components in electrical steel. We cut electrical steel up to 0.1mm thick in a burr-free manner for high-frequency applications.
We supply components for electromagnets and also manufacture lamination stacks for stators and rotors. These stacks, manufactured with tight tolerances, form the core of the stator and rotor in high-tech motors and resolvers.
Stator Rotor: Specifications
Coated laminations can be cut with high precision and burr-free down to a thickness of 0.1 mm, with tolerances starting from ±0.01 mm.
The outer diameter of a fully assembled stack is finished with a dimensional tolerance of up to 40 microns, depending on the stack’s diameter. For this, we use an advanced fiber laser that enables both fast and highly accurate laser cutting and welding.
Stacks can be finished in different ways:
- by laser welding
- or through thermal bonding in an oven.
All calibration tools for accurately assembling the coated laminations are designed and manufactured in-house, ensuring maximum flexibility and short lead times.
Every component is inspected using a 3D measuring machine to guarantee consistent quality.
Stacks are produced in a wide range of sizes, tailored to your application.
Stator Rotor: Materials
Various materials with or without bonding varnish, transformer tin (Electroblech) are 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.