Stator Injection Mold Insulation In China

Motorneo employs specialized molds designed to over-mold stators with plastic insulation, providing a reliable and efficient solution for motor stator insulation. We have multiple injection molding insulation equipment that can plastic overmolding can be applied to both complete and segmented stator laminations.

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stator injection molding insulation

Capacities For Injection Mold Design And Manufacturing


Our professionals use flat or 3D software to design the mold. Molds usually use light metals, such as aluminum alloys, or high-hardness steels (such as S7) to increase the durability of injection molds.


The CNC electrical machine equipment will cut the material precisely according to the CAD drawing and cooperate with the laser cutting technology to ensure the accuracy of the cutting.


We assemble, adjust, and test the injection mold to ensure that the mold accuracy meets the expected standard.

capacities for stator injection molding insulation
process for stator injection molding insulation

Injection Plastic Insulation Motor Stator Laminations Process

This process involves injecting molten materials, typically thermoplastics, into a precision-designed mold cavity under high pressure. The mold is intricately crafted to form the desired shape of the stator core lamination. The plastic material can cool and solidify within the mold.

Our skilled technicians closely monitor this phase to guarantee that the resulting stator laminations exhibit the required dimensional accuracy and surface finish.

Advantages Of Injection Insulation Motor Stator

Enhanced Electrical Insulation

The injection insulation process ensures uniform and consistent coverage, creating a robust barrier against electrical currents and minimizing the risk of short circuits.

Complex Geometry Shapes

The injection insulation process accommodates these complex shapes. The process also ensures efficient production, high repeatability, and excellent insulation performance.

Optimized Heat Dissipation

It allows for precise control over the application of insulating materials, ensuring well-distributed in the insulation layer. It is designed to dissipate heat generated during motor operation optimization.

Improved Mechanical Strength

Injection insulation reinforces the structural integrity of stator components, offering increased mechanical strength and resistance to external stresses, such as vibration and mechanical loads.

Applications Of Plastic overmolding Motor Laminations

Industrial Automation: Injection molding plastic insulation finds application in various industrial machinery, including conveyors, pumps, and industrial fans.

Automotive Sector: The automotive industry uses electric motors, from electric drive technologies to engine cooling systems, for various functions.

Household Appliances: Various household appliances, such as washing machines, refrigerators, and air conditioners, incorporate electric motors.

Wind Energy: In wind turbines, injection molding plastic insulation stators play a pivotal role in converting wind energy into electricity.

Materials Used For Stator Injection Molding

Some commonly use injection molding thermoplastic materials, such as thermoplastics elastomer(TPE), thermosetting plastics(epoxy resins), PA, PPS, PET fiberglass high loaded, and BMC.

TPE materials

Why Choose Us As Your Motor Lamination China Manufacturer?

Our production equipment includes 25T-300T stamping machines, laser cutting machines, low-speed EDM wire machines, medium-speed EDM wire machines, high-speed EDM wire machines, automatic stacking, welding machines, injection molding machines, epoxy power machines, and automatic winding machines.

Beyond insulation, we offer a complete range of motor lamination manufacturing services(such as stamping, stator winding, assembly, etc.).

The motor rotor and stator lamination samples’ lead time is 5-15 days.

Injection Mold Insulation Stator FAQs

Injection molding plastic insulation is a specialized manufacturing process that involves applying a protective insulating layer onto stator components of electric motors through precise injection molding techniques.

During this process, insulation materials, often in the form of thermoplastics or thermosetting plastics, are melted and injected into custom-designed molds that match the intricate geometry of the stator. Once injected, the material cools and solidifies, forming a seamless and uniform insulation layer.

Stator insulation prevents electrical short circuits, enhances heat dissipation, and ensures efficient motor performance. Proper insulation extends the lifespan of the motor and contributes to its reliability.

Injection mold insulation optimizes electrical performance, reducing energy losses due to improved insulation. This can lead to enhanced motor efficiency, resulting in lower operating costs.

Customized Stator Mold Injection Insulation Services

Whether you’re in the automotive, industrial, renewable energy, or any other sector relying on electric motors, our custom fabricated solutions optimize your motor’s efficiency and lifespan.