Wire EDM Cutting for Stator Laminations Prototype

Every detail, from the design of stator prototypes to the manufacturing process, plays a crucial role in motor performance. That’s why we employ cutting-edge technologies like laser cutting and wire EDM cutting to create high-quality stator prototypes.

In this blog post, we’ll dive into the realm of EDM wire cutting for stator prototypes, shedding light on this advanced machining process and its impact on motor lamination prototyping.

With a multitude of laser-cutting and wire EDM machines at our disposal, we’re ready to design and manufacture electric motor and generator lamination.

What is EDM Wire Cutting?

EDM (Electrical Discharge Machining) wire cutting, often referred to as wire EDM, is a high-precision machining process used to cut, shape, and fabricate motor lamination or parts and components from electrically electrical steel.

This process relies on a controlled electrical discharge, or spark, to erode the workpiece material, resulting in intricate and precise cuts. EDM wire cutting creates delicate and complex shapes with extreme accuracy.

Unlike traditional machining methods, EDM wire cutting eliminates direct contact between the tool and the workpiece, minimizing the risk of tool wear and heat-induced deformities.

Wire EDM motor lamination

Capability Of EDM wire-cutting process

Normally the stator prototype samples by laser cutting or EDM Wire Cutting. Here is the wire-EDM process: 

Design Preparation

Before the EDM wire-cutting process begins, our engineers and designers create a detailed CAD (Computer-Aided Design) model of the stator prototype. This model defines the exact shape, dimensions, and features of the stator lamination.

Material Selection

We use electrical steel or nickel cobalt alloy as stator lamination materials. We commonly stack sheets to about 80mm and compress 2 of 10mm height steel plates on both edges. Finally, adjust the flatness of the laminated stacks.


The process prepares the EDM wire-cutting machine. This involves securing the workpiece, which is the chosen material for the stator prototype, and threading the thin, electrically conductive wire (usually brass or copper) through it. Carefully positioned the electrode wire to maintain a small and consistent drilling(0.8-1.2mm) between itself and the workpiece.

Dielectric Fluid

A dielectric fluid, such as deionized water or oil, is used to surround the workpiece and wire during the EDM wire-cutting process. The dielectric fluid serves multiple purposes, including:

Cooling the wire and workpiece to prevent overheating.

Flushing away eroded material particles.

Providing electrical insulation to control the spark discharge.

Electrical Discharge

An electrical potential difference, or voltage, is applied between the wire and the workpiece. When the voltage reaches a critical level, it triggers a controlled electrical discharge or spark between the wire and the workpiece.

Material Erosion

The spark generates intense heat at the point of contact, causing a small portion of the workpiece material to melt and vaporize. This process effectively erodes the material. The dielectric fluid carries away the eroded particles, allowing the wire to progress through the workpiece.

CNC Control

The entire EDM wire-cutting process uses a CNC (Computer Numerical Control) system precisely controlled. The CNC system coordinates the movement of the wire in multiple directions, ensuring that it follows the CAD model’s specifications. This enables the creation of intricate shapes and cuts with micrometer-level precision.

Accuracy and Precision

Throughout the process, the CNC system constantly monitors and adjusts parameters to maintain accuracy and quality. This includes controlling the spark gap, wire tension, and dielectric fluid flow.

wire edm laminations machine

Benefits of Using Wire EDM for Stator Prototypes

Precision and Accuracy

EDM wire cutting delivers micron precision. Defining tight tolerances and precision requirements ensures that stator prototypes meet performance expectations.

Material Compatibility

It can handle a wide range of materials, from conductive metals to exotic alloys, offering versatility in stator material selection.

Reduced Heat-Affected Zones

As a non-contact process, EDM minimizes heat generation, preserving the integrity of stator materials.


This process is particularly cost-effective for small-batch or custom stator prototyping, minimizing waste and setup time

Quality Control

We maintain strict quality control standards are crucial to producing stator prototypes that meet design specifications.

Engineers employ various inspection methods, such as CMM (Coordinate Measuring Machine) and visual inspections, to verify the accuracy and quality of prototypes.

Choosing Us As Your EDM Wire Cutting China Manufacturer

We have over 10 years of stator core EDM wire-cutting experience. In the past few years, we have produced over 10k pcs EDM wire-cutting prototype samples for our global customers.

Motorneo has mass wire cutting and laser cutting machines for wire EDM prototype motor laminations. In addition, we offer mass-production electric motor stator and rotor lamination stacks and custom lamination services.

Our automation punching machine and large press can stamp various size iron core laminations. Whether you need industrial motors and generators or automotive motors, we can provide wide solutions.

visit the industry electric motor core factory


So, what lies at the heart of precision engineering in the realm of electric motors? The answer, unequivocally, is EDM (Electrical Discharge Machining) wire cutting for stator prototypes. Using advanced EDM and conventional EDM machines we are able to meet the need for complex, multi-operation parts quickly and economically.

We offer not only EDM wire cutting but also laser-cutting and custom electric motor lamination services. This comprehensive approach enables us to cater to diverse needs, ensuring that you get a high-quality electric motor.

For all your motor lamination needs, including laser-cutting, wire EDM, and custom laminations, visit Motorneo today.


What materials are suitable for stator prototypes created using EDM wire cutting?

When creating stator prototypes using wire cutting, it’s essential to select materials that are electrically conductive and compatible with the EDM process. Here are some materials commonly used for stator prototypes created using wire cutting:

Laminated Silicon Steel (Electrical Steel)

Laminated silicon steel(electrical steel or transformer steel) is one of the stator prototype materials. Silicon steel is formed from iron and silicon alloyed with other materials like molybdenum or aluminum. It has excellent magnetic properties, including high permeability and low core loss.

Magnetic Alloys

Stator prototypes in specific applications use various magnetic alloys, such as permalloy and amorphous metal alloys. These alloys offer unique magnetic properties, making them suitable for specialized motor designs.

Copper Alloys

Certain copper alloys, like phosphor bronze and brass, are used for stator prototypes, especially when specific mechanical properties or electrical conductivity are required in addition to magnetic performance.

Exotic Alloys

In some advanced motor applications, exotic alloys with specific properties may be used for stator prototypes. These alloys are chosen based on the desired characteristics, such as resistance to high temperatures, corrosion resistance, or unique magnetic properties

What are the differences between laser-cutting and wire-cutting motor lamination?

Laser cutting and wire cutting are two distinct machining processes used in the manufacturing of motor laminations, each with its own set of advantages and applications.

Laser cutting employs a highly focused laser beam to precisely cut through the material, while wire cutting utilizes electrical discharges to erode the workpiece material. 

The primary difference lies in the method of material removal. Laser cutting is a non-contact process, which means there is no physical contact between the cutting tool and the material.

This results in minimal wear and tear on the equipment and often produces a smooth, high-quality finish on the laminations. It is particularly suitable for thinner materials and applications where intricate shapes or patterns are needed.

In contrast, wire cutting (EDM wire cutting) relies on electrical discharges to erode the material, making it a contact-based process. This process is highly precise and capable of cutting through thicker materials, making it ideal for applications where precision and complex geometries are crucial.

The choice between laser cutting and wire cutting for motor laminations depends on factors such as material thickness, desired precision, and the specific requirements of the motor design.

Laser cutting is typically favored for thinner materials and intricate shapes, while wire cutting excels in thicker materials and applications that demand micrometer-level precision.

How to find laminated prototype manufacturers in China?

To find laminated prototype manufacturers in China, you can employ several effective strategies. Start by searching on popular B2B platforms like Alibaba, Made-in-China, and Global Sources, where numerous manufacturers list their services.

Additionally, consider attending industry-specific trade shows and exhibitions in China, such as the Canton Fair or specialized motor and electronics events. Networking with industry professionals and seeking referrals can also lead you to reputable prototype manufacturers.

Finally, conduct thorough online research, read reviews, and verify credentials, including certifications and quality standards, to ensure you partner with a reliable manufacturer in China for your laminated prototype needs.

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