Helical Stamping Stator Core Laminations

As a leading motor lamination manufacturer in China, we provide cost-effective helical stamping stator core lamination services. Our advanced production facilities and skilled team enable us to deliver precision-engineered stator laminations that meet the unique requirements of your electric motors.

helical stamping stator laminations services

helical stamping services

Precision And Innovation

Our helical stamping services provide efficient solutions for motor lamination manufacturing. Whether you need customized solutions or seeking to optimize your motor’s efficiency, we have the experience and resources to meet your needs.

Customized Slinky Stator Core Lamination Stacks

Our cutting-edge electrical lamination stacks are meticulously designed for electric vehicles, alternators, and hub motor cores, delivering exceptional performance and efficiency. This technology reduces core loss and eddy current losses, enabling motors to operate more quietly and at lower temperatures.

With applications in automotive electrification, HVAC systems, and various electric motor-driven applications, these customized stacks are crucial for boosting the overall efficiency and sustainability of modern transportation.

Helical Stamping Electrical Steel Laminations Manufacturing Capabilities

The helical stamping process for an electric lamination core involves several steps to create the desired shape and properties in the metal.

helical stamping motor lamination process

The process starts with the selection of high-quality electrical steel (often referred to as silicon steel) that has the appropriate magnetic properties for the application.

In the first step of the helical stamping stator core lamination process, a stacked plurality of long bands of sheet steel is punched to create strip laminations. These strips have distinct tooth portions and core back portions.

Unlike conventional square-sheet punching methods, helical stamping significantly minimizes iron waste. It is estimated to only require 30 to 40% of the material typically needed. This reduction in material waste is a significant advantage of the helical stamping process.

The punched strip laminations are then spirally wound and integrated, forming a unique helical pattern. This process is integral to achieving the “Slinky” configuration, which is characterized by its helical shape.

By intermeshing the protrusions and recesses of tooth portions, the helical stamping technique enhances efficiency.

Throughout the process, quality control measures are implemented to ensure the iron cores meet the required specifications for dimensions, tolerances, and magnetic properties.

Benefits of Slinky Stamping Electric Motor Laminations

Slinky stamping electric motor laminations offer numerous benefits, primarily due to their unique helical shape and the innovative manufacturing process used to create them. These benefits include:

Reduced Material Waste

The helical stamping process significantly minimizes iron waste, estimated to be only 30 to 40% of the material typically required. This reduction in material waste is cost-effective.

Improved Efficiency

By intermeshing the protrusions and recesses of tooth portions, slinky stamping enhances the efficiency of electric motors. This can lead to better performance, reduced energy consumption, and longer lifespan of the motor.

Enhanced Magnetic Properties

The helical pattern achieved through stamping can improve the magnetic properties of the motor cores. This can result in motors that operate more quietly and at lower temperatures.

electrical steel

Materials Used In Helical Punching Stator

The stator helical punching materials typically include silicon steel, which is a type of electrical steel specifically designed for use in magnetic devices such as motors and transformers. Its high silicon content helps reduce eddy current losses, making it ideal for efficient motor operation.

Helical Stamping Related Lamination Services

Die Design

Different tooling options and proprietary dies are available for your stator and rotor with different cost investments to match your needs.

Motor Stamping

Motor lamination stamping includes progressive stamping, compound stamping, and rotary notching employs specialized dies to cut and shape silicon steel(electrical steel).


Laser cutting and wire-cutting electrical steel lamination prototype to meet customer needs. Our rapid prototyping lead times are as fast as 15 days.


We use bonding varnishes to achieve glue dot, and full surface bonding electrical steel laminations, and provide the ideal bonding method for your electric motor iron cores.

Core Assembly

The lamination stacking and core assembly methods include laser welding, TIG welding, MIG welding, riveting, cleating, bolt, etc. The purpose enhancing overall motor efficiency.


We offer epoxy resin coating processes to achieve motor iron core insulation. They are applied to prevent electrical losses and ensure efficient energy transfer within the laminations.

Slinky Motor Stator Laminations Supplier In China

Our company stands out as a leading supplier of slinky motor stators and rotor laminations in China due to our commitment to innovation, quality, and customer satisfaction. We provide the best precision products to meet your industry specific needs, backed by excellent service and competitive pricing. Trust us for your motor core laminate needs.

Build your Motor Core Stamping knowledge

You’ll find the electric motor stator core punching resources with confidence on the Lamnow blog.

Laminations Helical Punching FAQS

Slinky stator core laminations differ from traditional laminations primarily in their helical shape, achieved through a unique spiral-winding process. Unlike conventional square-sheet punching methods, the helical stamping process for slinky laminations minimizes waste, making it more efficient and environmentally friendly.

Slinky stator core laminations are versatile and suitable for various applications, including but not limited to electric vehicles (EVs), alternators, and hub motor cores for EVs. Their helical design enhances motor efficiency, making them ideal for any application where high-performance electric motors are required.

The expected lifespan of motors using slinky stator core laminations can vary depending on factors such as usage, maintenance, and operating conditions. However, due to their high efficiency and reduced waste, motors with slinky laminations can potentially have a longer lifespan compared to those using traditional laminations.

Chose High-Quality Slinky Stator Cores!

Whether you’re designing electric vehicles, alternators, or hub motor cores for EVs, our precision-engineered cores deliver superior magnetic properties, reduced iron waste, and customized solutions. Contact us today to elevate your motor designs!