Progressive Stamping Electric Motor Laminations in China

Motorneo offers high-quality progressive stamping services, the production of a large series of stamped lamination stacks used for electric vehicle motors, in-wheel hub motors, industrial motors, permanent magnet synchronous elevator motors, servo motors, and wind power generators. Our 25ton – 300-ton press machines hold overall lamination packs precision tolerances down to ± 0.1mm.

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progressive stamping die

Progressive Stamping Die Design And Manufacturing

The design and manufacturing of progressive stamping die is one of our core projects. Our skilled engineers meticulously craft stamping dies tailored to your specifications.

Though dies take a long time to build and cost higher, the motor rotor and stator laminations produced in this way have a perfect consistency.

Motorneo uses high-quality carbide steel to manufacture progressive stamping dies to achieve 600 strikes/minute stamping speed reaching 200 Million strikes lifespan. Our experienced technicians also excel in die maintenance, implementing routine inspections and repairs to uphold the dies’ efficiency.

We leverage wire-EDM (Electrical Discharge Machining) and grinder equipment to fine-tune the mold details and surface, ensuring the utmost precision in the manufacturing process.

Progressive Stamping Process For Motor Cores

We excel in harnessing progressive die stamping production of electric motor cores. The stamping technology productce interlocked complete stator rotor stacks cores, and segmented stator lamination packs.

progressive stamping process

The process begins with a continuous silicon steel sheet entering the high-speed press machine; it has a series of dies to perform multiple operations. As the silicon steel sheet advances, the stamping machine works to cut, form, and shape each lamination.

The high-speed press, capable of stamping more than one hundred times per minute, progressive stamping is ideal for small but large-capacity generators and motor laminates. It can produce high quantities in a short period.

Interlock integration can be carried out during the motor lamination stamping process. These interlock points are located at the edge of the lamination. Once the stacks are stacked together, the interlock rivet points are compressed into the stack area, thus firmly locking each stack.

Segmented Stator Laminations

The segmented stator laminations process involves the creation and assembly of a stator for an electric motor or generator using multiple segments or pieces instead of a single, continuous piece of material.

Motorneo employs welding, bonding with adhesives, dovetail slot interlocked, or mechanical fastening to individual segments that are assembled into a circular formation to create the stator core.

T-segment motor cores are commonly found in various large industrial generators, elevator traction motors, linear motors, servo motors, etc.

Segment Motor Core

High-Precision Electric Motor Cores In China

Motor rotor and stator laminations are produced that use the Progressive stamping manufacturing process, elevating the performance and efficiency of electric motors across diverse industries. It applies to appliances, industrial equipment, automotive,t aerospace, power tools, etc.

ceiling fan motor

ceiling fan motor

compressor motor

compressor motor

power tool motor

power tool motor

pump motor

pump motor

Quality Control For Progressive Punching Electric Motor Laminations

The progressive stamping for motor laminations involves using quality molds and punches. Maintaining the stamping dies correctly and strict inspection of dimensions is crucial during the initial lamination production.

quality control for progressive stamping


Using silicon steel detector inspections of raw materials, where we carefully assess the material composition and dimensions to ensure they adhere to specifications.


Our skilled technicians conduct in-process inspections throughout manufacturing to monitor the precision of stamping, forming, and cutting operations. We also utilize CMM and 2D image measuring equipment to verify dimensional accuracy and tight tolerances.


Employing visually inspect motor laminations, assessing features such as burrs, surface finish, and core alignment.

Our Advantages Of Stamping Motor Stator&Rotor

Increased Efficiency

Progressive stamping ensures precise and consistent manufacturing of stator and rotor laminations, leading to electric motors with improved overall efficiency and reduced energy losses.


The high-speed and automated nature of stamping allows for the mass production of stator and rotor cores, resulting in cost savings due to reduced labor and material waste.

Optimal Precision

Our stamping process provides unmatched precision in shaping and forming each lamination, ensuring tight tolerances and alignment critical for optimal motor performance.

Reduced Lead Times

With high-speed presses and streamlined processes, progressive stamping significantly reduces the time required to produce stator and rotor cores。

Structural Integrity

The integration of rivets during the stamping process enhances the structural integrity of the stacked laminations, ensuring stability and alignment during motor operation.

High-Volume Production

Progressive stamping can handle high-volume production requirements efficiently, making it ideal for large-scale motor manufacturing.

Why Choose Us As Your Stamping Motor Laminations China Manufacturer?

visit the industry electric motor core factory

From design to manufacturing, we leverage laser cutting, wire cutting(including low-speed, medium-speed, and high-speed), and 25T – 300T stamping equipment to produce high-quality motor stator rotor stacks.

Whether lamination prototyping or large production, we can have strict quality control to conform to lamination tolerances.

Motorneo team of experts possesses extensive knowledge in stamping, winding, stacking, bonding, and assembly electrical motor lamination manufacturing.

Materials Used In Progressive Stamping Motor Lamination

Motorneo commonly uses 0.1mm – 1mm electrical steel sheet(silicon steel or lamination steel ) or 25 μm amorphous alloy materials to manufacture stator and rotor laminations. Offering various thickness electrical steel grades, such as B20, B35, B50, M15, M19, M22, M27, M36, and M45. For the specific magnetic properties demands, also offer nickel alloys or cobalt alloys.

progressive stamping material

Prototype Motor core Laminations Stacks

We employ laser cutting and wire cutting to cut lamination prototypes. The lamination prototype uses riveting, cleating, welding, and bonding technologies for assembly. Our sample lead time is 5 – 15 days.

Stamping Motor Core Laminations FAQs

Yes, progressive flushing can be customized to meet specific motor core designs and requirements. We can tailor the die design and process to create laminations for various motor types and sizes.

The main difference between progressive stamping and compound stamping lies in the complexity of the parts produced and the number of operations performed.

Progressive stamping is well-suited for high-volume production of simple to moderately complex parts.

Compound stamping produces parts with intricate shapes, multiple features, and higher complexity in a single operation.

The choice between the two methods depends on the specific design requirements, production volume, and cost considerations.

Rotary notching is generally not as efficient as progressive stamping for high-volume production due to the individual notching of each workpiece.

Let Us Design Your Progressive Stamping Electric Motor Cores

Are you seeking a motor core that delivers superior performance? Motorneo is your best choice. From concept to reality, we design and manufacture high-quality lamination cores to optimize motor performance.