Introduction
An electric motor is only as efficient as its magnetic core. The Stator Lamination Stack—a compressed package of insulated electrical-steel sheets—minimises eddy-current loss and keeps motors cool, quiet, and energy-smart.(VACUUMSCHMELZE) Produced in Iran with export-oriented quality controls, our stacks offer tight dimensional tolerances, thin-gauge silicon steel, and multiple bonding options for everything from industrial pumps to cutting-edge EV traction drives.
Why Laminations Matter
Splitting the core into thin, varnish-insulated sheets interrupts circulating currents and slashes iron loss, boosting motor efficiency and torque density.(Hexagon) In modern EVs, each percentage point saved translates to extra kilometres of range and a cooler, lighter drive unit.
Technical Specifications
| Parameter | Standard Grade | High-Frequency Grade | Test Method |
|---|---|---|---|
| Material | Si-Fe 50 A700 | Si-Fe NO 35PN440 | IEC 60404-8-4 |
| Lamination Thickness | 0.35 mm | 0.20 mm | Micrometer |
| Stack Height Tolerance | ±0.05 mm | ±0.03 mm | CMM |
| Stack Factor | ≥ 96 % | ≥ 97 % | ASTM A343 |
| Core Loss @ 1.0 T, 50 Hz | ≤ 2.8 W/kg | ≤ 2.1 W/kg | Epstein Ring |
| Insulation Coating | C-5 phosphate, <1 µm | C-6 organic varnish | ISO 2178 |
Custom outside/inside diameters (Ø60–400 mm) and slot counts are available on request.
Manufacturing Highlights
- High-Speed Progressive Stamping—Feeds up to 250 strokes/min ensure burr-free laminations without laser heat-affected zones.(Quadrant)
- Interlocking, Welding, or Adhesive Bonding—Choose self-riveting notches, TIG spot welding, or back-lack bonding to match torque ripple and acoustic targets.(Fagor Arrasate)
- In-Line Core Stacking & Skewing—CNC presses guarantee ±0.1° skew accuracy for smoother start-up and reduced cogging.
Material Choices & Benefits
| Alloy | Best For | Benefit | Source |
|---|---|---|---|
| Silicon-Steel (Si-Fe) | Standard AC & EV motors | Affordable, low core loss | (Lammotor) |
| Nickel Alloy | High-frequency aerospace drives | Higher saturation flux | (Lammotor) |
| Cobalt Alloy | Ultra-high-speed e-compressors | Superior thermal stability | (VACUUMSCHMELZE) |
Core Applications
Electric Vehicles (EV) & Hybrid Drivetrains
Segmented stacks with 0.2 mm laminations push inverter switching to 20 kHz without thermal runaway, delivering up to 97 % peak efficiency in PMSM traction motors.
Industrial Pumps & Compressors
Rugged 0.35 mm stacks withstand 60 °C winding temperatures, cutting energy bills by 5–7 % in continuous-duty IE4/IE5 motors.
Wind & Hydro Generators
Large-diameter cores (Ø300–400 mm) with skewed slots minimise cogging and acoustic hum for grid-tied turbines.
Competitive Advantages
- Made in Iran, Globally Ready — Local silicon-steel mills stabilise raw-material costs and shorten lead times.
- Precision QA/QC — 100 % laser-vision burr inspection and Epstein core-loss tests on every batch.
- Export Packaging — Vacuum-sealed VCI film + heat-treated pine crates for sea freight; each pallet is ISPM-15 compliant.
- Technical Support — FEA-driven flux-density optimisation and mechanical-stacking simulations at no extra cost.
Handling & Safety
Stacks are non-flammable but edges are sharp; wear cut-resistant gloves. Store indoors below 60 % RH to preserve insulation integrity.
Ordering Information
- Minimum Order: 2 t (≈ 1 000 stator sets Ø80 mm)
- Lead Time: 3–4 weeks FOB Bandar Abbas or EXW Tehran plant
- Free Sample: 10 kg mixed-slot demo kit on request via [email protected]
Conclusion
High-density windings, thinner laminations, and flawless stacking are the secrets to next-generation electric-motor performance. Our Electric Motor Stator Lamination Stacks deliver them all—cutting core losses, boosting power, and standing up to tough industrial or EV requirements. Secure your custom stack today and engineer motors that run cooler, quieter, and longer.
If you are wondering how to obtain such a product from Iran, please refer to How to Import Products from Iran – Complete Step-by-Step Guide article.
