Compound Stamping Motor Laminations In China

Motorneo core competency is more than ten years experiences of manufacturing motor lamination stacks, focusing on compound stamping motor laminations.

We have multiple stamping equipment and various compound dies to manufacture high-quality motor lamination products. The comprehensive services have customizing dimensions, material combinations, and high-performance motor cores to meet the unique needs of our customers.

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compound stamping die

Capabilities For Compound Stamping Die Design And Manufacturing

Our company boasts compound stamping die design and manufacturing capabilities, incorporating advanced techniques such as wire EDM (Electrical Discharge Machining) and grinding. Our skilled engineers and designers utilize state-of-the-art CAD/CAM software to design and create intricate compound dies.

With wire EDM, we can precisely cut complex shapes and contours into the die, ensuring the utmost accuracy and consistency in each lamination produced. Furthermore, our grinding capabilities allow us to fine-tune the die surface, optimizing its performance and longevity.

The manufacturing cost of compound die is relatively high, so our stamping tooling service department records all Settings and the number of mold trips daily. Through these data, you can determine the current use of the mold. Our customers provide free maintenance services during the everyday life of the mold.

Our Leading Processes For Motor Core Laminations

Motorneo provides a comprehensive range of leading processes for motor core laminations. Including compound stamping, single-tooth concentrated winding motor core, stacking motor lamination, stator injection molding, motor rotor stator filled with epoxy resin, and aluminum die-cast rotor.

Compound Stamping

Compound stamping utilizes a die and punches to press, cut, and form laminations from silicon steel sheets. This rapid production rate is cost-effective for medium and large-sized motor laminations for mass production.

Stamping services are well-suited for automated feeding and output systems cooperation. The synchronization action between our press machine and automation systems reduces downtime, minimizes human intervention, and improves overall efficiency.

Compared to progressive stamping and rotary notching, compound stamping resulting in motor laminations boasts excellent flatness and concentricity.

compound stamping motor laminations
Single Tooth Concentrated Winding Motor Core

Single Tooth Concentrated Winding Motor Core

Our Single-Tooth Concentrated Winding Motor Core, unlike traditional laminated cores, innovative design consolidates the magnetic flux path into a single tooth, minimizing energy losses and enhancing overall motor efficiency.

The Single Tooth Concentrated Motor Core is characterized by its streamlined structure, optimized magnetic circuit, and reduced cogging effect, resulting in smoother operation and improved control.

This breakthrough technology offers significant benefits across various applications, from industrial machinery to electric vehicles, where precision and energy conservation are paramount.

Compound stamping Laminations Stacking Process

Stator and Rotor lamination stacking are crucial in manufacturing iron laminated cores, where individual lamination stacking forms a complete motor core. We can be employed in various methods for stacking, such as welding, cleating, riveting, and bonding.

self-bonding motor


Lamination stacks bonded together with Glue dot bonding technology and Self Bonding process.

TIG welding Motor Lamination


Welding includes laser welding and TIG/MIG welding for precise, efficient bonding of laminations in electric motor cores.

cleating motor


Cleating involves adding metal tabs or clips to the stator laminations, allowing them to be fastened together.

riveting motor


Riveting involves using metal rivets to join the motor rotor and stator laminations together.

Aluminum Die-Cast Rotor

Motorneo aluminum die-cast rotor lamination is a critical component of electric motors, renowned for its lightweight and excellent thermal conductivity properties.

In our manufacturing process, molten aluminum is injected into a high-pressure mold, precisely shaped to create the rotor’s intricate design. Once the aluminum solidifies, our mold is opened, revealing a robust and precisely formed rotor.

The die-cast rotor’s lightweight nature reduces the motor’s overall weight. Moreover, aluminum’s exceptional thermal conductivity ensures efficient heat dissipation, contributing to the motor’s longevity and reliability.

We can manufacture cast various sizes of aluminum rotor iron core and a largest outer diameter of up to 1250mm. We also can deliver aluminum cage rotors that meet the highest industry standards.

aluminum die casting

Stator injection molding and insulation

Motorneo offers stator injection molding insulation and motor lamination core epoxy powder coating insulation process. Both insulation technologies enhance motor longevity and efficiency making them ideal for automotive to renewable energy.

Injection Molding Stator

Injection Molding Stator

The injection molding stator process involves creating a mold with cavities in the stator shape, and a molten material, typically a thermosetting or thermoplastic polymer, into the mold under high pressure.

Once the material cools and solidifies, our mold is opened, and the completed stator with intricate winding slots and precise geometry is removed.

Stator Filled With Expoxy Resin

Stator Filled With Epoxy Resin

We can provide stators filled with epoxy resin to enhance electric motor stators’ performance and durability. The stator windings and coils use epoxy resin to impregnate and encapsulate, which hardens into a solid, protective material.

Our epoxy resin creates a seamless and robust barrier around the windings, ensuring motor operation, even in demanding conditions.

Our Quality Control For Compound Die Stamping Motor Cores


We have achieved ISO/FDIS09001:2008 and ISO/TS16949 certifications, highlighting our commitment to quality management. We use advanced inspection tools for comprehensive quality control, such as CMM (Coordinate Measuring Machine) Inspection and Projector Detector.


With CMM Inspection, we can accurately measure and validate compound die stamping motor laminations’ dimensional accuracy and tolerances, ensuring they meet precise specifications. The


Projector Detector allows us to conduct thorough visual inspections, detecting any surface imperfections or irregularities that may affect performance.

compound stamping quality control

Materials Used In Stamping Manufacturing Process

There are many kinds of motor lamination steel-grade materials, our compound stamping manufacturing process material selection for high-quality electrical steel(silicon or lamination steel) is 0.10 to 1 mm thick. Electrical steel has two kinds of oriented and non-oriented steel; in most cases, we use unoriented steel. This high-grade steel contains silicon, which reduces eddy current losses.

motor core materials

Custom Compound Stamping Electric Motor Stator Rotor Cores

Customized compound die punching motor stators and rotor cores commonly applied in electric vehicles (EVs) and hybrid electric vehicles (HEVs), industrial pumps, compressors, Vent plates, the renewable energy sector(Wind/Fire Power generators and solar energy systems), etc.

Why Choose Us As Your Compound Punching Motor Cores China Manufacturer?

compound stamping motor lamination manufacturer

Motorneo motor laminate cores are used across various industries, including automotive(including hub motor), appliances, renewable energy, industrial machinery, and more.

Multiple 25T – 300T punching allows us to deliver compound stamping motor cores with utmost precision and efficiency.

Our commitment to quality is further reinforced by our ISO/FDIS 9001:2008 and ISO/TS 16949 certification, demonstrating our adherence to strict quality management standards.

We provide cost-effective solutions without compromising on quality. Our efficient production processes and economies of scale allow us to offer competitive pricing for our products.

Prototype Motor Laminations In China

For the prototype motor laminations, Motorneo offers laser cutting and wire EDM (Electrical Discharge Machining) techniques to produce high-quality, precise, customized laminations for various motor applications.

Our laser cutting provides a fast and accurate method, cutting intricate shapes and patterns from silicon steel sheets, ensuring the prototype’s design consistency. Wire EDM electrical discharge machining with wires (usually made of brass or copper) can cut conductive materials with extreme precision.

Both techniques empower us to create samples quickly and efficiently, and prototyping time is usually 5-15 days.

Compound Stamping Motor Core Laminations FAQs

Lead times can vary based on specific requirements and order volumes, but compound stamping generally allows for efficient production and shorter lead times.

Compound stamping offers various advantages, including improved motor efficiency, higher power density, reduced noise, and vibration, enhanced thermal performance, and cost-effectiveness for medium-to-large volume production.

Compound vs. progressive stamping, how much do you know? Compound die stamping requires the precise assembly of individual layers before stamping, while progressive die stamping involves feeding continuous strips of material through a continuous press to form laminations.

The primary difference between compound stamping and rotary notching is their purpose and scope. Compound stamping presses create complex shapes with multiple features on a single sheet, making them suitable for intricate parts. On the other hand, rotary notching is specialized for creating precise slots in motor laminations, enhancing motor efficiency and performance.

Wide Range Of Solutions To Meet Specific Lamination Requirements

Looking for a motor cores manufacturer that offers a wide range of solutions to meet your specific lamination requirements? If you are interested, let’s discuss how our stamping lamination packs can elevate your electric motor performance.