Aluminum Die Casting Rotor Laminations In China

We specialize in cutting-edge aluminum die-casting rotor lamination technology. Our expertise lies in crafting high-quality motor lamination stacks that power various industries.

Through the precision of die casting, we create intricate rotor laminations that enhance the performance of electric motors and generators.

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aluminum die casting rotor capability

Capability For Aluminum Die Casting

Aluminum die casting is a highly sophisticated manufacturing process in industry motors. We provide transform molten aluminum into intricate shapes services.

The process begins with creating a mold, often made from two hardened tool steel dies. Next, we melt high-quality aluminum alloys at controlled temperatures. A hydraulic or die casting machine injects Molten aluminum into the die cavity under high pressure.

Once the aluminum solidifies, our mold is opened, revealing a robust and precisely formed rotor. Then, we process further, such as trimming, deburring, and surface finishing.

We can manufacture various sizes of aluminum rotor cores and a largest outer diameter of up to 1250mm.

Squirrel Cage Rotor Design And Manufacturing

A squirrel cage rotor is a cylindrical arrangement of bars made from a conductive material, typically aluminum or copper, interconnected at each end by conducting rings. It consists of rotor lamination and a squirrel cage and is widely used in industry motors.

Aluminum Squirrel Cage Rotor

We provide two primary manufacturing technologies die-casting and fabricated bars, for producing aluminum squirrel cage rotors.

Die casting is a widely used manufacturing method. In this process, molten aluminum is injected into a mold under high pressure to create the desired shape. In actual production, rotor die casting saves significant production time and cost.

Fabricated bar technology involves assembling individual aluminum bars and end rings to create the rotor structure. The bars are typically stamped(such as compound stamping, rotary notching, and progressive stamping), cut, or otherwise shaped to the desired form before being interconnected. This method is often used for custom or low-volume applications.

aluminum squirrel cage rotor
die cast copper rotor

die-cast copper rotor

Except for the aluminum die-cast rotor, we deliver die-cast copper rotor services with a keen focus on precision and quality.

In the die-cast copper rotor process, high-quality copper alloy is carefully melted and injected into precision-engineered molds, resulting in intricate rotor shapes that exhibit exceptional thermal conductivity and electrical performance.

Our state-of-the-art machinery and skilled technicians ensure that each die-cast copper rotor is manufactured with meticulous attention to detail, meeting the stringent standards of the industry.

The resulting rotors boast enhanced efficiency, reduced energy consumption, and improved heat dissipation capabilities, making them a preferred choice for automotive, industrial machinery, aerospace, and renewable energy.

Benefits of Die Casting Rotor Lamination

The benefits of aluminum die-casting rotors are numerous, making them popular for various industries and applications. Here are some critical advantages of utilizing rotors core in electric motors and generators.

Enhanced Efficiency

Aluminum’s high thermal conductivity allows for better heat dissipation, reducing energy losses due to overheating. This leads to improved motor efficiency and overall performance.

Lightweight Design

Aluminum is significantly lighter than other materials like copper, making aluminum die-casting rotors ideal for applications where weight reduction is essential.

Excellent Conductivity

Aluminum is a good conductor of electricity, ensuring efficient current flow and minimizing energy losses within the rotor.

Reduced Eddy Current

Eddy current losses are minimized due to the lower electrical resistivity of aluminum, resulting in further energy savings.


Aluminum is more cost-effective than other materials like copper, particularly in high-volume production.

Corrosion Resistance

Aluminum possesses natural corrosion resistance, extending the lifespan of the rotor and requiring less maintenance.

Custom Die Casting Electric Motor Squirrel Cage Rotor

We provide aluminum die-casting rotor laminations and squirrel cage rotor custom service. The versatility finds application across diverse industries. Our application areas include the automotive sector, industrial machinery, wind turbines, hydroelectric generators, aerospace, etc.

aluminum rotor core
aluminum rotor
squirrel cage rotor
die-casting rotor

Quality Control For Aluminum Rotors

Many factors affect aluminum casting, such as the number of rotor slots, length, and outer diameter. Any tiny mistakes will cause unacceptable defects inside the casting. We employ a rigorous quality control process involving advanced methods to validate our products’ integrity, performance, and durability.

aluminum rotor weigh


We utilize weighing as a fundamental inspection method. By precisely measuring the weight of our cast aluminum rotors, we can calculate the actual filling rate of aluminum material. However, the qualified aluminum filling rate does not guarantee the quality of the rotor conductive strip.


We employ an X-ray inspection system to meticulously check the porosity of the end rings in our aluminum die-casting rotor laminations. This non-destructive testing can identify even more minor defects and prevent pore defects in the end rings from harming the overall performance of the rotor.

Why Choose Us As Your Aluminum Die Cast Rotor Manufacturer?

visit the industry electric motor core factory

Backed by years of experience in the field, we deeply understand aluminum die-casting rotor technology.

Our expert team is well-versed in design, manufacturing, and quality control, ensuring that every product leaving our facilities meets the most stringent industry standards.

What sets us apart is the double cage construction approach. The double cage construction provides better control over magnetic fields, reduces losses, and produces more robust and high-performing electric machines.

We offer end-to-end solutions, from design and prototyping to production and quality control.

Materials Used In Die Casting Rotor Lamination

Die-casting squirrel cage rotors are typically made from various conductive materials that offer the required electrical conductivity, mechanical strength, and thermal properties.

Some common materials used in die-casting squirrel cage rotors include aluminum ingot, copper alloys, copper-clad aluminum, and various alloy combinations.


Aluminum Die Casting FAQs

China boasts advanced manufacturing capabilities, skilled labor, and a strong industrial infrastructure, making it a preferred destination for producing high-quality die-casting rotor laminations at competitive costs.

Lead times can vary based on factors like design complexity and order volume. We work closely with you and can help determine a specific lead time for your project.

Research manufacturers with a track record of excellence, technological capabilities, and a commitment to quality control. Online platforms, industry directories, and referrals can help you identify reputable manufacturers to collaborate with.

Yes, aluminum die casting allows for intricate and customized designs. We can tailor the shape, size, and features of rotor laminations to meet specific motor requirements and applications.

Choosing the Right China Manufacturer for Squirrel Cage Rotors

If you are looking for a manufacturer that manufactures aluminum squirrel cage rotors? You can discuss it with us. We understand that each project is unique. We offer customizable solutions that cater to your specific requirements.

Our commitment to innovation drives us to continuously push boundaries, ensuring you receive cutting-edge aluminum squirrel cage rotors that meet the demands of modern electric machines.