Metalink Electromechanical (Wuxi) Co., Ltd :
C Core (Tape-Wound Split Cut Cores)
Precision Ground CRGO Silicon Steel & CRNGO steel & Amorphous C Cores (Cut Cores) for CT, Reactors, Power Inductors.
High-quality Tape Wound Cut Cores
Our tape wound cut cores, also widely named C cores, are manufactured by continuous CRGO steel strip winding, vacuum stress-relief annealing, precision cutting and end-face grinding. Each pair is magnetically matched after cutting, easy for coil pre-assembly without winding wire through closed toroidal frames. Our cut cores are exported to Europe, North America, Southeast Asia for current transformers, line reactors, welding transformers, solar inverter inductors and EMC filter components.
512+
Successfully Project Finished.
25+
Years of Iron Core Supply
57+
Serving 57+ Countries and regions (South America, Middle East, North America, Europe)
20+
FOB/CFR/CIF/DDP/DDU supported with logistics partners
——Key Advantages of Our Cut Cores
- Choose from our standard series, or let us design a custom shape for your application.
All cut cores go through strict internal inspection before shipment: dimension check, visual coating inspection, inductance & iron loss testing, pairing sorting. We can supply independent test certificates, material mill sheets for overseas customers. Third-party inspection is acceptable.
Certified Products
Certified ISO 9001:2015 for Quality Management Systems, we deliver cut cores with sustained, reliable quality.
Properties
- Magnetically matched pairs, tolerance controlled tightly
- CNC precision ground cutting surface, tiny joint air gap
- Wide range of standard stock sizes for fast sampling
- No expensive mould required, fast turnaround for custom dimensions
- Compliant with IEC, RoHS, ISO 9001, test reports support
——Cut Core Specification
| Item | Cut Core Specification |
|---|---|
| Core Material | CRGO Grain Oriented Silicon Steel (MOS,M3, M4, M5, Hi-B 23Q075,23Q080,23Q085,23Q090,23Q100,23Q110,27Q120,30Q130); Amorphous, Nanocrystalline alloy |
| Silicon Steel Thickness | 0.23mm, 0.27mm, 0.30mm, 0.35mm |
| Surface Treatment | Bare metal / Black epoxy powder coated insulation |
| Grinding Process | Double-end precision surface grinding, matched pairing |
| Shape | Split C Cut Core (single phase); Custom E-type cut core on request |
| Frequency Range | 50Hz ~ 40kHz (depends on material grade) |
| Tolerance | 0.02mm for critical cut face dimension |
| Packaging | Anti-collision foam packing, independent pair marking |
——Typical Applications of Cut Cores
- Selected by global OEMs for these magnetic devices
Current Transformers (CT)
Protective & metering CT — stable accuracy and low losses across the full measuring range.
Line Reactors & DC Link Chokes
Power inductors engineered for high saturation flux density and low core loss in switching stages.
Welding Machine Transformers
High-power cut cores built to withstand heavy-duty cycles and demanding thermal conditions.
Solar & Wind Inverter Inductors
Reliable magnetic performance for renewable energy conversion under continuous, high-frequency operation.
EMC Common Mode Chokes
Pulse transformers with high permeability for effective noise suppression and clean signal transfer.
Instrument Sensors & Isolation Transformers
Precision-grade cores delivering consistent accuracy, low drift and dependable galvanic isolation.
——Video of Cut Core
Advantage
Committed To 100% Customer Satisfaction
Thinking and solving problems from the customer’s point of view
Trust and Worth
Our Partners
Our Shows
SMART ENERGY
Tokyo, JP
POWER EXPO
Atakent, KZ
ENERGY NEXT
Sydney, AU
ELECTRIC & POWER
Ho Chi Minh, VN
What Our Clients Say
Testimonials
Responsable R&D
Jean-Pierre Dubois
« Les Cut Cores de Metalink sont d'une précision remarquable. Les tolérances serrées et l'absence de bavures sur les faces de coupe ont amélioré nos performances de 15 %. Livraison rapide et service client au top. »
Direttore Tecnico
Marco
"All'inizio abbiamo ordinato un piccolo campione, il prezzo del campione era molto conveniente e la qualità impeccabile. Ci hanno spedito in una settimana. Altamente raccomandati."
Оптовый продавец
Елена Волкова
«Разрезные сердечники METALINK превзошли наши ожидания. Мы заказали нестандартные размеры, и техническая поддержка была очень отзывчивой. Клиенты довольны, рекомендую их как надёжного поставщика.»
Ingeniero de Proyectos
Carlos Ramírez
"Recibimos los Cut Cores de Metalink, en primer lugar el embalaje era muy bueno. Después de un largo transporte marítimo, cada núcleo llegó intacto. Para el próximo proyecto seguiré recomendando encarecidamente los productos de METALINK."
Request a Quote (For Sample & Bulk Order)
Send us your drawing, key specifications— we’ll respond with a competitive quotation within 12 hours.
Learn More From
Frequently Asked Questions
Cut core is a split tape-wound magnetic core. The raw silicon steel ribbon is tightly wound into a closed loop first, annealed to release internal winding stress, then precisely sawn into two symmetrical C-shaped halves. The cut surfaces are flat ground to guarantee minimal air gap reluctance. The two halves form a complete magnetic circuit when paired together. This split design is the biggest difference compared with integral toroidal cores and traditional stamping C-cores.
Yes. We support small sample orders of standard CRGO and amorphous cut cores. Sample lead time is short.
Yes. METALINK has long-term export experience for cut cores, we prepare commercial invoice, packing list, CE/RoHS documents for customs clearance.
Drawing with outer size, window size, cross-section thickness, material grade, coating requirement and target inductance.