Rotor Laminations Stacks Manufacturers in China

Rotor laminations are thin electrical steel laminations that are stacked, welded, or bonded together to form the core of an electric motor’s rotor.

Motorneo specializes in the design, production, and distribution of rotor laminations for electric motors. Using stamping, EDM wire cutting, and laser-cutting manufacturing processes to produce high-quality laminations.

Whether you need rotor and stator lamination prototypes or mass production, we offer custom a wide range of rotor and stator laminations for the electric motors and generators industry, including various sizes and shapes.

If you’re in need of top-quality stator and rotor stacks or custom solutions for your project, please contact us today.

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Custom Electric Motor Rotor Laminations

Motorneo custom inner rotor and outer rotor laminations for industrial pumps, fans, robotics, electric vehicles, compressors, drones, wind turbines, solar, elevators, etc.

The rotor laminations type includes squirrel cage rotor, aluminum die-cast rotor, copper die-cast rotor, double cage rotor, permanent magnet motor rotor, induction motor rotor, servo motor rotor, brushless DC motor rotor, universal motor rotor, shade pole motor rotor, and asynchronous motor rotor.

EV rotor lamination

eV rotor lamination

servo motor rotor

servo motor rotor

squirrel cage rotor core

squirrel cage rotor

industrial rotor core

EVs motor Rotor

rotor lamination core for permanent magnet synchronous motor

permanent magnet synchronous motor Rotor Laminations

new energy vehicle adhesive rotors

new energy vehicle adhesive rotors

motor laminations from motorneo

Capability For Stamping Rotor Iron Core Laminations

We provide rotary notching, compound, and progressive stamping processes to punching rotor laminated. This technique involves cutting, shaping, and punching lamination steel sheets to create the laminated cores of the rotor.

Punching ensures uniformity and accuracy in the size and shape of each laminated, allowing for tight tolerances and minimal energy loss due to eddy currents.

Our punching laminated needs stacking and bonding to form complete motor lamination stacks. The rotor is a vital component of motors. Our fabrication and assembly service includes laser welding, TIG+MIG welding, cleating, riveting, self-bonding, gluing, etc.

Rotor Core Laminations Prototyping

Motorneo offers laser-cutting and wire-cutting technology for rotor lamination prototypes. We have multiple laser cutting machines and low-speed, medium-speed, and high-speed EDM wire machines.

Laser cutting employs a focused laser beam to cut, engrave, or shape silicon steel sheet materials with exceptional accuracy. Wire cutting involves using techniques like Wire EDM (Electrical Discharge Machining) to precisely cut electrical steel laminations for motors.

We specialize in laser cutting and wire EDM cutting for motor laminations, ensuring high precision and quality in manufacturing these crucial components. Our lamination prototype lead time is 7-15 days.

prototype motor lamination

Quality Control For Motor Lamination Stacks

We have obtained ISO/FDIS 9001:2008 and ISO/TS 16949 international certifications.

quality control


We use silicon steel detector instruments to inspect the silicon steel sheet used in manufacturing and record the test results of its physical and electromagnetic properties.


Using Coordinate Measuring Machines (CMM) and Projector Detectors to ensure each component is completed within the required dimensions and tolerances.


X-ray inspection system to meticulously check the porosity of the end rings in our medium and large aluminum die-casting rotor.

Why Choose Us As Your Electric Motor Rotor Stacks China Manufacturer?

industry motor core manufacturer

To give our customers the best results, we provide compound stampingprogressive stamping, and rotary notching to manufacture our laminations.

Having multiple laser cutting and wire-EDM technology to prototype lamination for customers.

More than 10 years of experience in core stacking allows us to manufacture high-quality stator cores at a lower cost and faster speed.

Whether it’s a high-volume production or a small batch, we can offer high-precision and efficient laminations for a simplified supply chain and short lead times.

Materials Used in Rotor Laminations

Our motor laminated experience allows us to use a variety of materials to stamp out motor laminated, such as silicon steel(electrical steel), thin-gauge electrical steel, cobalt-iron alloys, nickel alloys, etc.

We offer the following grades for our motor laminations: B20, B35, B50, M15, M19, M22, M27, M36, and M45. We can stamp motor lamination from materials ranging in thickness from 0.10 to 1 mm thick extremely tight tolerances.

motor core materials

Rotor Laminations FAQs

Motor laminated forms the core of an electric motor’s stator and rotor. They consist of thin metal sheets that are welded, or bonded together. By making them from individual pieces of metal rather than solid pieces.

Reduced Eddy Current Losses
Rotor laminated are typically made from thin, insulated sheets of metal. The insulation between the laminate helps minimize current losses, which occur when magnetic fields induce circulating currents in the metal.

Improved Magnetic Properties
Laminates are precisely punched or laser-cut to shape, ensuring consistent dimensions and alignment of the magnetic cores. This results in improved magnetic properties and a more efficient conversion of electrical energy to mechanical energy.

Lower Noise and Vibration
The laminated’s tight stacking and uniformity reduce electromagnetic noise, contributing to quieter and smoother operation.

Enhanced Heat Dissipation
The thin and stacked nature of laminates allows for efficient heat dissipation. Heat generated during operation can be more effectively conducted away from the core, preventing overheating and prolonging the life of the motor or generator.

Our motor laminations are used in a wide range of applications including industrial, power generation, manufacturing, aerospace, and transportation. These rotor laminations serve an essential purpose by powering heavy machinery with superior efficiency.

We know what rotor and stator laminate are, so let’s dive into the key differences between stator and rotor of electric motors.


The stator core is located in the stationary part of the motor core, known as the stator. The stator surrounds the rotor and remains fixed in place.

Rotors are situated within the rotating part of the motor, which is the rotor. The rotor spins within the stator.


Stator laminations play a primary role in generating a rotating magnetic field when electrical current flows through the stator windings. This magnetic field interacts with the rotor to induce motion.

Rotor laminations serve to provide a magnetic path for the magnetic field generated by the stator. As the magnetic field rotates, it exerts a force on the rotor laminations, causing the rotor to turn and produce mechanical output.


The increased thickness helps stator laminations withstand higher mechanical loads as they remain stationary.

The rotor’s reduced thickness allows for efficient magnetic flux generation and response to the changing magnetic field from the stator.


Stator motor laminations are typically made from the same material as rotor laminations, which are often silicon steel, cobalt, and nickel alloys. This material exhibits excellent magnetic properties and low electrical conductivity.

Rotor motor laminations are also typically crafted from high-grade silicon steel. The choice of silicon steel helps reduce core losses and enhances motor efficiency.


Stators usually have a more complex and larger shape, as they need to surround the rotor and create a rotating magnetic field. The stator laminations are designed to accommodate stator windings and provide a path for the magnetic field.

Rotors tend to have simpler shapes, often circular or rectangular.

Get High efficiency electrical machine Laminations

We can design and manufacture a range of high-quality stator and rotor lamination services, including punching, mold designing and manufacturing, and stacking. Let’s discuss your requirements.