EI Magnetic Core Laminations | Tight Tolerance Manufacturing | Insulated Coating Available | High Efficiency Design

Product Description

Our EI Magnetic Core Laminations are precision-engineered electrical steel components widely used in transformers, inductors, power supplies, and various electromagnetic devices. Manufactured through advanced high-speed stamping technology and strict quality control processes, these laminations deliver excellent dimensional accuracy, stable magnetic performance, and significantly reduced core losses.

Made from high-grade silicon steel (CRGO/CRNGO), EI laminations are designed to optimize magnetic flux flow while minimizing energy waste caused by eddy currents. The EI structure provides a reliable and efficient solution for electrical energy conversion, ensuring stable performance even under continuous load conditions.

With in-house tooling design and precision stamping capabilities, we support both standard and fully customized EI core laminations. Customers can choose from different thicknesses, insulation coatings, and material grades to meet specific application requirements. Our products are widely used in industrial power systems and consumer electronics due to their reliability, efficiency, and long service life.

Features

• High Precision Stamping Technology – Ensures consistent dimensions and excellent fit
• Low Core Loss Performance – Reduces energy consumption and heat generation
• Insulated Coating Available – Enhances electrical resistance between laminations
• Stable Magnetic Properties – Reliable performance under different working conditions
• Smooth Edge Finishing – Minimal burrs for better stacking efficiency
• Custom Design Support – Flexible manufacturing based on drawings or samples
• High Efficiency Structure – Optimized EI design for improved energy conversion

Technical Parameters

Applications

Our EI Magnetic Core Laminations are widely used across electrical, industrial, and energy-related applications:

• Power Transformers – Efficient voltage conversion and energy transfer
• Distribution Transformers – Stable performance in power grids
• Switching Power Supplies (SMPS) – Reliable electronic power conversion
• Inductors & Chokes – Improve current stability and reduce losses
• Industrial Automation Systems – Used in control and power modules
• Home Appliances – Applied in energy-efficient electrical devices
• Audio Equipment Transformers – Provide stable and low-noise performance

Thanks to their high efficiency and low energy loss, EI laminations are essential components in modern electrical and electronic systems.

Customization

We provide full OEM and ODM customization services to meet diverse project requirements:

• Custom Dimensions – Manufactured according to drawings or samples
• Material Selection – CRGO, CRNGO, or special silicon steel grades
• Insulation Coating Options – Varnish, oxide layer, or customized coatings
• Tooling Development – In-house precision mold design and manufacturing
• Thickness Customization – Flexible range to match performance requirements
• Surface Treatment Options – Anti-rust oil, protective coating, or special finish
• Packaging Customization – Branding, labeling, and export packaging solutions

Our engineering team provides technical support from design optimization to mass production to ensure cost efficiency and stable quality.

Support and Services

• Technical Consultation – Material selection and structural optimization support
• Prototype Development – Fast sample production for testing and validation
• Strict Quality Control System – Full inspection from raw material to final shipment
• Global Export Experience – Efficient logistics and documentation support
• After-Sales Support – Long-term technical and service assistance
• Fast Response Service – Professional feedback within 24 hours

We focus on building long-term partnerships with global customers through reliable quality and service.

Packing and Shipping

• Packaging Methods
  • Anti-rust protection (VCI paper or oil coating)
  • Inner plastic wrapping + reinforced carton boxes
  • Wooden pallets or wooden cases for bulk orders
• Shipping Options
  • Sea freight – Cost-effective for large volume orders
  • Air freight – Fast delivery for urgent needs
  • Express courier – DHL, FedEx, UPS for samples and small batches
• Lead Time
  • Samples: 7–15 working days
  • Mass production: 15–30 working days (depending on order quantity)

FAQ

Q1: Can you produce EI laminations based on custom drawings?
Yes, we provide full customization based on drawings, samples, or technical requirements.

Q2: What materials are used in EI core laminations?
We use high-quality CRGO and CRNGO silicon steel depending on application needs.

Q3: Do you offer insulated coatings?
Yes, multiple insulation coating options are available, including varnish and oxide coatings.

Q4: Can I request samples before placing a bulk order?
Yes, we support sample production for quality evaluation before mass production.

Q5: What is your minimum order quantity (MOQ)?
MOQ depends on product specifications, but we support small trial orders.

Q6: How do you ensure product quality?
We use strict quality control processes including raw material inspection, in-process control, and final inspection.