EI-105 Standard Size Silicon Steel EI Lamination 105*17.5mm Pre-Drilled Transformer Core

Manufacturer wholesale EI-105 stamped silicon steel EI iron core, tight stacking structure reduces magnetic flux leakage, widely used in switching power supply, inverter and audio transformer, bulk order discount supported.

Size and packaging guidelines

Custom sizes and thickness options for EI sheets, single-phase, three-phase, UI laminations, raw coils and precision cut sheets.

Waterproof packaging with cartons or pallets, effective against rust and mechanical damage in transit.

Accept customized stamping & slitting based on your drawings for transformer and inductor magnetic cores.

Customizable Size
SKU: EI-105-1 Category:
Description

Overview

Our silicon steel laminations cover EI sheets, single-phase lamination, three-phase lamination, UI lamination, raw silicon steel coils and precision cut sheets. Manufactured from high-grade electrical silicon steel, featuring low iron loss, high magnetic conductivity and consistent electromagnetic properties. These core materials are essential for low-frequency transformers, inductors, power reactors and various magnetic components.

Key Features

  • Low core loss, high permeability, excellent magnetic stability
  • Precise stamping & cutting, tight dimensional tolerance
  • Multiple specifications & thickness options for selection
  • Available as standard laminations, raw coils or customized cut sheets
  • Surface insulation treatment optional upon request
  • Support OEM & custom size processing

Typical Application

Low frequency transformers, power inductors, voltage regulators, audio transformers, power supply magnetic cores, reactors and other electrical equipment.

Available Types

  • EI Lamination
  • Single Phase Lamination
  •  Three Phase Lamination
  •  UI Lamination
  •  Raw Silicon Steel Coils
  •  Custom Cut-to-Size Sheets
Additional information
a

105

b

17.5

c

17.5

d

35

e

52.5

Holes

4

θ

6

Gap

1.0
1.4
1.6
2.0
2.2
2.8

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Shipping and Delivery

Delivery Options

We support multiple shipping solutions tailored for silicon steel laminations, EI sheets, single-phase sheets, three-phase sheets, UI sheets, raw steel coils and custom cut sheets.
  1. Sea Freight: Ideal for bulk large-volume orders, most cost-effective for container shipments.
  2. Air Freight: Fast transit for urgent small & medium batch orders.
  3. Express Delivery (DHL / FedEx / UPS / TNT): For samples and small trial orders, door-to-door service.

Railway Transport: Economical stable shipping route to Europe and Central Asia.

Lead Time

  • Sample order: 3–7 working days
  • Mass production order: 7–15 working days based on specifications & quantity

Shipping Notice

All silicon steel cores are packed with waterproof plastic film + sturdy export cartons / wooden pallets to avoid moisture, rust and deformation during transit.

 

We can arrange shipment to designated seaports, airports or offer DAP / DDP delivery terms as customer requirements. All shipping documents including commercial invoice, packing list can be provided.