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cold rolles grain oriented silicon steel with air gap EI lamination core

Basic Info

Model No.: Ballast Core - 001

Product Description

Cold rolles grain oriented silicon steel with air gap EI lamination core





Product Description
Brief Induction


EI Lamination is made by the silicon steel strip. The model of EI lamination in standard sizes is from EI 28 to EI -240, and the model of EI lamination in non-standard sizes is from EI-36 to EI-360. the gap sizes of Transformer lamination core can be customized.


Three -phase EI lamination is made by the silicon steel strip. The model of three-phase EI lamination is from three-phase (20) to Three Phase (100), and the hole size is from Φ4.5 to  Φ14, The gap sizes of transformer lamination core can be customized.


UI lamination is made by the silicon steel strip.the model of UI lamination is from UI-30 to UI-100, and the hole size is from Φ 8 to  Φ 14. The gap sizes of transformer lamination core can be customized.




Model A B C D E F G
60H 60 40 20 10 10 30 10
66H 66 44 22 11 11 33 11
75H 75 50 25 12.5 12.5 37.5 12.5
96H 96 64 32 16 16 48 16
103H 103 69 40 20 11.5 49 20
112H 112 74 36 19 19 56 19
150H 150 100 50 25 25 75 25


Item  Ballast Core
Type Steel Coil

0.35 ~ 0.50mm


According to your requests

Coil Weight

4 ~ 8 tons


BAO Stleel: B501300, B50A1000, B50A800, B50A700, B50A600, B50A470, B35A440, B35A550, B65A600, B65A1600 B

WU Steel: 50WW1300, 50WW1000, 50WW800, 50WW700, 50WW600, 50WW470, 35WW350, 35WW310, 65AW600, 65AW1600

AN Steel: 50AW1300, 50AW1000, 50AW800, 50AW700, 50AW600, 65AW1600, 65AW600, 35AW440, 35AW550

Tai Steel: 50TW290,  50TW310,  50TW470, 50TW600, 50TW800

Surface Treatment

C-4 Insulated Coated

OEM and ODM Welcome
Application  Motor, electric engine, dynamo, transformer, electromagnetic switch, reactor, magnetic amplifiers, ballast, relay, yoke flow circle and other industry usage.




1. Low iron loss, high magnetic flux strength, comes up to the international advance standard
2. Slight thickness difference between the horizontal and the longitudinal direction, promising the high lamination factor
3. Processing Performance: Easily punched and cut, high dimensional accuracy
4. Insulating Coating: Uniform color, good insulation, strong adhesive, high heat resistance, high putrescibility
5. Smooth surface, no rust, no rolling marks, no cold lap, no crease, no bubble cell, no delamination defects.


  1. Faster processing speed
  2. Short lead times to provide zero inventory program.
  3. Can make according to clients' requirements

Our advantages
    1. Low MOQ: It can meet your promotional business very well.
    2. Good Service: We treat customers as our friends.
    3. Good Quality: We have strict quality control system; don’t sell the poor quality goods
    4. Best price: Choosing superior resources from more than five factories for you
    5. Fast & Cheap Delivery: We have big discount from forwarder.




Packaging & Shipping


MOQ: 2 Tons

Trade Terms: FOB, EXW
Payment Terms: T/T, L/C; 30% deposit in advance, 70% balance before shipping
Delivery Time: 5~7 days after receive 30% payment
Packing: Standard export seaworthy packing or According to your requirement
Shipping: By sea, by air, by express

Our Services


1. Directly manufacturing factory with competitive price and quality control, we check all material when we start to bulk productions.
2. Professional advice to help you purchase the products you wanted
3. Professional export service team servers in the deal.
4. Customization service is available, OEM business is appreciated.
5. We will inspect and test all products material carefully to ensure no damage and lost.
6. The success of our cooperation can be guaranteed for our company is a credible and honest partner.


  1. Stock sample is free, but client must pay for sample express cost.
  2. Sample not in stock will be charge on client.
  3. Customized sample cost will be based on design
Company Information
About our technical support

We own DOUBLE-HEAD COIL CRADLE(without motor):


Suitable for straightening machine.

Save the time for feeding ,improve the ability for producing,low cost,be more competitive.

About Us


    Established in 1986, our company is one of the earliest enterprises engaged in the Ballast Cores production. We are located in Jiangyin City, Jiangsu Province, enjoying a convenient location and transportation.

    We have been specialized in the development and manufacture of Ballast Cores for more than 20 years. Till now, we have introduced dozens of fully automatic high-speed precision punch presses and other punch presses, and hundreds of international standard series of high-precision carbide dies.

    We produce all kinds of power transformer and ballast supporting series EI type Ballast Core (EI CORE), HID series and BTA series ballast Ballast Core, fixed rotor of electric tool, and we also produce many special specifications of Ballast Cores, including EI type, F type, inductors and reactor.

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below:

Contact us if you need more details on Ei Lamination Core. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Transformer Core、Air Gap Ei Lamination Core. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Non-Standard Series

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