As a vertically integrated supplier, we specialize in manufacturing Custom Rotor and Stator assemblies. We provide complete traceability for every automotive-grade silicon steel stator and rotor we produce. Our in-house silicon steel production allows us to deliver unmatched consistency and develop high-performance solutions for electric vehicle applications.
We welcome you to bring us your custom stator rotor lamination, whether they are performance targets or a specific material grade, and we will provide a tailored solution with detailed parameters for your evaluation.
Why Choose Us
1. Consistent Quality – Quality is Our Lifeline
With great majority of raw materials from Baosteel, we ensure full in-house production control. Complete testing of mechanical properties with guaranteed thickness/width tolerance compliance.
2. Export Specialists – We Handle the Complexities
As 10+ years serving major overseas manufacturers, we can professionally handle the requirements of compliance, documentation, and shipping with proven track record.
3. Convenient Resources – As Easy As Local Supply
Flexible orders from small batches to large volumes. Multiple shipping options(LCL, FCL, Bulk Carrier) with dedicated after-sales support and regular customer visits.
4. Low Minimum Order & Sample Availability
We accept small orders starting from 0.5–5 tons and provide samples for evaluation, helping you verify quality before bulk purchasing.
Product parameters
| Application | Automotive (EV Traction, EPS, Auxiliary) | Motor Type | PMSM, IM (Customizable) |
| Performance Class | High Power Density / High Torque | Voltage Platform | 400V / 800V / 48V (Designed to Spec) |
| Cooling Method | Oil Cooled / Water Jacket Compatible | Service Model | Fully Customizable (Co-development) |
| Quality System | IATF 16949 Certified |
And the table details the performance parameters for our most commonly used silicon steel grades for automotive applications. If you require a different grade or have specific performance targets, cantact us.
| Grade | Tensile Strength (N/mm²) | Yield Strength (N/mm²) | Elongation (%) | Hardness (Hv0.5) |
|---|---|---|---|---|
| 35W440 | 385-485 | 250-350 | 25-35 | 140-165 |
| 35W300 | 420-520 | 270-370 | 25-35 | 150-190 |
| 35WS250 | 440-540 | 280-380 | 25-35 | 150-185 |
| 30W230 | 450-550 | 280-380 | 15-25 | 180-220 |
| Grade | Nominal Thickness (mm) | Theoretical Density (kg/dm³) | Core Loss P1.5/50 (W/kg) | Magnetic Induction B50 (T) | Lamination Factor (%) | ||
|---|---|---|---|---|---|---|---|
| Guaranteed Value | Typical Value | Guaranteed Value | Typical Value | ||||
| 35W440 | 0.35 | 7.7 | ≤3.00 | 2.50-2.70 | ≥1.70 | 1.7 | ≥96 |
| 30W230 | 0.3 | 7.6 | ≤0.25 | 2.10-2.20 | ≥1.65 | 1.67 | |
Our stators and rotors for cars
Rotor details
Stator details
Factory certificates & Product Test
To guarantee benchmark quality, every coil undergoes our “inspect-and-retain” protocol:
• Individual samples are taken from each coil and rigorously tested for corrosion resistance, elongation/yield strength, magnetic flux density, core loss, hardness, insulation resistance, and lamination factor—only coils passing all criteria are released.
• Each retained sample is sealed by coil ID and archived for full traceability.
• A digital dossier is created for every coil; scanning its QR code instantly reveals original test data, production batch, and process parameters—true “one coil, one code, lifetime traceability.”
Trust by foreign customers
With over 10 years of export experience, we have delivered thousands of tons to customers in more than 20 countries and earned widespread acclaim.
