Adhesive Bonding (Backlack)
The ultimate choice for high-speed EV rotors. We process specialized self-bonding coatings to eliminate interlocking stress, preventing delamination at extreme RPMs.
ELECTRIC VEHICLE MOTOR SOLUTIONS
HIGH-EFFICIENCY MOTOR CORE STAMPING FOR EV TRACTION MOTORS
Maximize the power density and driving range of your electric vehicles. Specializing in ultra-thin silicon steel stamping (0.20mm – 0.35mm), we deliver precision-engineered stator and rotor cores that drastically reduce high-frequency eddy current losses. From custom tungsten carbide progressive dies to high-volume lamination mass production, we accelerate your EV motor innovation.
THE EV CHALLENGE
MAXIMIZING POWER DENSITY WITH ULTRA-THIN LAMINATIONS
Next-generation EV traction motors operate at extreme speeds (up to 20,000+ RPM), generating severe heat and high-frequency core losses. The solution is using ultra-thin electrical steel, but stamping 0.20mm to 0.30mm material without burrs or die wear is notoriously difficult. Our in-house machined carbide tooling achieves sub-micron edge clearances, ensuring razor-sharp, burr-free cuts over millions of continuous strokes, ultimately elevating your motor’s magnetic efficiency.
ADVANCED CORE ASSEMBLY FOR HIGH-RPM EV MOTORS
AUTOMOTIVE-GRADE MATERIALS
PREMIUM SILICON STEEL & RIGOROUS EV SPECIFICATIONS
The efficiency and driving range of an EV traction motor heavily rely on the quality of its electrical steel. To combat high-frequency eddy current losses at extreme RPMs, we strictly source premium ultra-thin CRNGO (0.20mm – 0.35mm) from global top-tier mills like Baosteel and Nippon Steel. Combined with our IATF 16949 certified manufacturing systems, we guarantee optimal magnetic flux and uncompromising dimensional accuracy for your mass-produced stator and rotor cores.
FLEXIBLE SUPPLY CHAIN SOLUTIONS
CHOOSE YOUR EV MOTOR MANUFACTURING STRATEGY
Every EV motor project has unique capital expenditure (Capex) and production requirements. Whether you operate your own stamping facility and need to import ultra-durable progressive stamping dies, or you prefer to outsource the complete lamination mass production to our automated factory, we adapt to your business model. Select your preferred delivery strategy below to scale your supply chain without constraints.
Buy the Tooling: Progressive Stamping Dies
Have your own press facility? We export custom tungsten carbide progressive dies. Enjoy guaranteed 120 million stroke lifespans and free global lifetime spare parts support.
View Tooling Export ➔Buy the Cores: Mass Production OEM
Zero upfront tooling investment. Leverage our 15+ automated stamping lines. We deliver 100% CMM-inspected, ready-to-wind motor cores globally.
View Lamination Stamping ➔EV MOTOR STAMPING FAQ
FREQUENTLY ASKED QUESTIONS ABOUT EV MOTOR CORES
Have technical questions about stamping ultra-thin silicon steel or implementing backlack bonding for your electric vehicle motors? Review our EV motor core manufacturing FAQs below. For custom prototyping or high-volume tooling inquiries, please contact our automotive engineering team for a free DFM consultation.
Can you prototype EV motor cores before building the progressive die?
Yes. We offer precision laser cutting or wire-EDM prototyping for low-volume EV motor core validation. Once the magnetic performance is verified, we transition you smoothly into high-volume progressive die stamping.
What is Backlack (Bonding) and why is it important for EV rotors?
Backlack utilizes a heat-activated adhesive resin pre-coated on the electrical steel. Unlike welding or interlocking, it causes zero damage to the lamination insulation, eliminates short circuits, and provides superior mechanical strength to withstand 20,000+ RPM in electric vehicles.
How do you handle the extreme tooling wear caused by stamping 0.20mm silicon steel?
Ultra-thin high-silicon steel is highly abrasive. We counter this by exclusively using ultra-fine grain tungsten carbide for all punches and matrix inserts, achieving sub-micron clearances that prevent burrs and exponentially increase the regrinding interval.
Is your lamination stamping process compliant with automotive standards?
Absolutely. Our mass-production facility operates under strict IATF 16949 quality management systems, ensuring full traceability, PPAP documentation, and 100% dimensional CMM inspection for all automotive OEM and Tier 1 clients.