What Are the Differences Between Stator and Rotor Laminations?

The stator and rotor laminations are important parts of the motor, and they work together to achieve the operation of the motor. This article will explain in detail how the motor stator and rotor work and the differences between them.

Stator Laminations

Stator laminations are placed within the stator, which is the stationary part of the motor. They surround the rotor and remain fixed in place during motor operation.

The stator core contains thin and stacked laminations of specialized material, often silicon steel, amorphous alloy, nickel alloy, and cobalt alloy, that form the core of the stator in an electric motor. Their primary purpose is to create a stable, stationary magnetic field when electrical current flows through the stator windings.

motor stator core laminations

Rotor Laminations

The rotor is made of lamination stacks, which are thin sheets of specialized material, typically high-grade silicon steel. Contrary to the stator, which is filled with copper wire, the rotor is filled with cast aluminum or silumin bars, that act as conductors. Rotor laminations are an integral part of the rotor, the rotating component of the motor.

The primary function of rotor laminations is to respond to the magnetic field produced by the stator. As the stator’s electromagnetic field changes with the flow of electric current, the rotor laminations interact with it, generating mechanical motion. 

rotor core laminations

The Differences Between Rotor and Stator Laminations

Different Structures

The rotor is the moving part of the motor and usually consists of a magnetic core and windings, while the stator is the static part of the motor and usually consists of an iron core and coil windings.

Different Movement States

The rotor is the rotating part of the motor. It is generally driven to rotate by electromagnetic force and plays a role in converting energy in the motor. The stator is the immobile part of the motor, usually stationary, and forms a magnetic field through the coil windings to form the stator magnetic field of the motor.

Different Functions

The rotor is the rotating part and is the power source of the motor. The stator is the fixed part and plays the role of maintaining the magnetic field.

application of stator and rotor

Automotive Industry

Electric vehicles, HEV, high-speed passenger cars, electric heavy trucks, electric tricycles, electric bikes, electric hoverboards, electric scooters, or hubs.

Industrial Machinery

Conveyor belts, pumps, fans, and compressors.

Home Appliances

Washing machines, refrigerators, air conditioners, fans, mixer grinders, vacuum cleaners, ovens, coffee machines, juicers, hand blenders, and sewing machines.

Power Tools

Electric drills, grinders, saws, angle grinders, sanders, lawnmowers, and pruning shears machines.

HVAC Systems

Heating, ventilation, and air conditioning systems.


Drones, multi-wing drones, flying machines.

Renewable Energy

Wind turbines and hydroelectric generators.

rotor laminations application

Capability for stator and rotor lamination stacks

Motorneo has multiple punching press machines, laser cutting machines, wire cutting machines, automation stacking machines, die-casting machines, automation winding machines, injection molding machines, and epoxy powder coating lines.

Our silicon steel detector, CMM inspection, projector detector, and x-ray inspection to strict quality control that ensures that our motor core laminations meet high performance and high permeability, and reduce eddy current losses.

lamination stacks of industry motor cores


The rotor and stator are two indispensable parts of the motor, and they each have different functions in the motor. The rotor is the rotating part of the motor and consists of conductors and magnetic core, while the stator is the stationary part of the motor and consists of coil windings and iron core. The cooperation between the rotor and the stator ensures the normal operation of the motor.


What materials are commonly used for stator and rotor laminations?

Motor laminations are typically made from materials such as silicon steel, nickel alloys, cobalt alloys, thin-gauge electrical steel, amorphous alloys, and soft magnetic composite.

How do stator laminations contribute to motor performance?

Stator laminations play a crucial role in enhancing motor performance by reducing power losses associated with eddy currents. By reducing eddy current losses, stator laminations contribute to optimizing the motor’s performance, efficiency, and power output.

Try to contact us for high-quality motor cores in China.