1K107 High Initial Permeability Nanocrystalline Core Magnetic Core
Oct 28, 2025
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Common types of nanocrystalline cores include toroidal, C-cores, block cores, and cut/split cores, which are categorized by their shape and application. They are used in various electronic components like transformers, common mode chokes, and current transformers, often replacing traditional ferrite cores due to their superior magnetic properties at higher frequencies.
Toroidal cores
Description: Wound into a doughnut shape, these are one of the most common forms.
Applications: High-power transformers, inductors, and other power supplies.
C-cores
Description: These are amorphous cores that have been upgraded to nanocrystalline material. They can be "cut" into two halves for easier winding and assembly.
Applications: Main transformers, output inductors, and PFC chokes.
Block cores
Description: Solid, rectangular or block-shaped cores.
Applications: High-frequency transformers, inductors, sensors, and sometimes used in wind turbines.
Cut and split cores
Description: These are toroidal cores that have been cut in half, making them suitable for use in applications where the core must be opened to be installed around a conductor.
Applications: Current transformers and other components that are retrofitted onto existing wiring.
Other types
Common Mode Choke Cores: Designed to be used in common mode chokes for noise filtering and EMI suppression.
Custom cores: Many manufacturers offer custom designs to meet specific application needs.
Spike absorbing cores: Specifically designed to absorb voltage spikes.
Nanocrystalline Core specification
| CORE DIMENSION | |||
| OD(mm) | ID(mm) | L(mm) | H(mm) |
| 28 | 12 | 60 | 10 |
| 35 | 22 | 90 | 18 |
| 40 | 25 | 92 | 15 |
| 42 | 25 | 95 | 15 |
| 45 | 28 | 100 | 20 |
| 50 | 28 | 120 | 20 |
| 65 | 35 | 125 | 20 |
| 70 | 45 | 143 | 25 |
| 80 | 58 | 135 | 25 |
| 95 | 70 | 146 | 25 |
| 124 | 100 | 268 | 25 |
| 130 | 100 | 310 | 25 |
| 160 | 124 | 350 | 25 |
| 180 | 145 | 385 | 25 |
| 200 | 175 | 435 | 25 |
| 210 | 180 | 410 | 25 |
| 255 | 215 | 470 | 25 |
| Note: Additional sizes can be customized to meet specific customer requirements. | |||
GNEE Featured Products
Gnee provides premium iron cores to the world. Our cores can be selected in a wide range of materials, shapes, applications, manufacturing techniques, etc., to meet customers' diverse demands. Explore our wide product range now~
Manufacturing Process
1. Raw Material Sourcing
2. Slitting
3. Punching
4. Laminating
5. Core Forming
6. testing
GNEE EC
Founded in 2008 and located in Anyang in China, Gnee Electric is a high-tech enterprise specializing in researching and manufacturing iron core products.
The company currently occupies over 20,000 square meters and employs more than 200 people, including over 80 professionals. After more than 18 years of development, we have built our own magnetic material production base and independently develope, produce, and sell various kinds of iron cores. The common types include silicon steel cores, motor cores, transformer cores, toroidal iron cores, special-shaped cores, custom cores, and others. Our cores are widely applied in different sectors including transformers, motors, mutual inductors, voltage stabilizers, welding machines, magnetic amplifiers, and instrumentation, providing diverse core solutions to global customers.
30+
Types of Products
18k+
Happy Clients
Why Choose GNEE EC?
GNEE EC was founded in 2008, which is a National High-tech Enterprise & Famous Brand Enterprise in China, developing into a professional manufacturer and supplier of high-quality iron cores.
18+
Over 18 years of success in the iron core industry;
National High-tech Enterprise & Famous Brand Enterprises in China;
200+
Over 200 employees;
The R&D team has more than 80 experienced engineers and the production team has more than 100 skilled staffs;
35+
Annual turnover up to 35 million dollor per year;
Owns many sets of highly automatic winding, annealing, and assembling machines;
1,000+
Over 1000 customers in domestic and overseas markets;
core Products are exported to more than 70 countries in the world;
Gnee Iron Core Factory Overview
Meet Our Sales Manager
"The Core of the Iron Core, the Power of Leadership" - See Our Great Decision-Makers Deeply Engaged in the Magnetic Materials Industry.
Edison Zhang
CEO
Kelly Zhang
General Manager
Alex Cao
Sales Manager
Industries Served
Automobile Industry
New Energy
Transformer Applications
Our Mission
Strive To Create world-class Iron core brand
With 18 Years of industry experience, we focus on the research, development, and manufacturing of high-quality iron cores for electricity, industrial control, new energy, and automotive markets