As electric vehicles (EVs) revolutionize the auto industry, motor cores have emerged as critical components at the heart of EV powertrains. Yet, one essential element behind the scenes plays a decisive role in motor core manufacturing: Stamping Oil.

Dyna specializes in high-precision Stamping oil solutions, optimizing both productivity and quality in automotive motor core production with advanced industrial lubrication technologies.

Why Are Motor Cores So Important?

Motor cores are the core components of electric motors, which convert electrical energy into rotational force – powering the movement of EVs. Their performance depends on a combination of cutting-edge technologies:

• Electrical steel lamination: Layering thin electrical steel sheets to reduce eddy current loss
• Precision stamping: Micron-level forming of complex shapes
• Advanced magnetic materials: Including SMCs, amorphous alloys, and high-silicon electrical steel
• AI-powered design: Optimizing efficiency through electromagnetic field analysis

All of these processes rely on ultra-precise Stamping, cutting, and stacking — and Stamping oil is vital in ensuring these operations run reliably and efficiently.

The Global Motor Core Market: A High-Stakes Technology Race

Motor core technology is a fiercely competitive global field. Here are five of the leading players shaping the industry:

1. Mitsui High-tec (Japan)

• Founded: 1969
• Global presence in 30+ countries
• Fully integrated production from die design to manufacturing
• Market leader in motor core production
• Clients include automotive, electronics, and industrial motor manufacturers

2. POSCO International (South Korea)

• EV motor core specialist
• Global expansion:
  • Mexico Plant: 2.5 million units/year
  • Poland Plant: Targeting 1.2 million units/year by 2030
• Major client: Hyundai-Kia (secured orders of 1M+ units)
• Focus: Enhancing EV performance with high-efficiency motor cores

3. EuroGroup Laminations (Italy)

Founded: 1967

• Global manufacturing in Italy, USA, Tunisia, Russia
• Leading supplier for motors, generators, and transformers
• Expert in magnetic steel lamination and stamping

4. JFE Steel (Japan)

Key products: Super Core, JFE N-CORE, JFE G-CORE

• Pioneer in high-frequency, low iron-loss electrical steel
• Supplies base materials for EV motor cores
• Innovative use of Pure Iron Powder for complex core shapes

5. Xinzhi Group (China)

Founded: 1990 (Listed company: 002664)

• Specializes in motor stators, rotors, and assemblies
• Strong focus on in-house R&D and mold design
• Leading Chinese supplier of automotive alternator stators
• Global vision: Become a premier motor technology provider

What these companies have in common? Precision stamping. This makes the stability and reliability of the Stamping process — and by extension, Stamping oil — a critical competitive factor.

Stamping Oil: The Hidden Hero of Motor Core Quality

Stamping oil is far more than just a lubricant. In high-speed, high-precision EV motor core production, it directly impacts product quality, yield, and equipment longevity.

Key functions of Stamping oil include:

• Lubrication: Reduces friction, extending die life
• Cooling: Prevents heat buildup during high-speed stamping
• Rust prevention: Keeps electrical steel clean and corrosion-free
• Cleanability: Ensures smooth post-processing and surface cleanliness

What Sets Dyna’s Stamping Oils Apart?

Dyna offers cutting-edge Stamping oil solutions tailored specifically for EV motor core manufacturing.

Key Features:

• Chlorine-free, eco-friendly formulation with excellent thermal stability
• Optimized for high-speed stamping: Maintains lubrication under extreme conditions
• Engineered viscosity for ultra-thin materials (under 0.1mm)
• Minimizes burrs for enhanced precision and product consistency
• Custom formulations available to match your die and process conditions

Bottom Line: High-Performance Motor Cores Require High-Performance Stamping Oil

No matter how advanced your technology, unstable base processes will compromise overall quality and productivity. Stamping oil is not a consumable — it’s an invisible yet essential technology that protects the performance of high-value components.

Dyna is committed to developing and delivering lubrication technologies that power the future of the automotive industry.

Discover how our differentiated Stamping oil solutions can elevate your motor core production today.

Dyna Co., Ltd.
Industrial Lubricant Solution
E-Mail : dyna@dynachem.co.kr
Web : dyna.co.kr/en/