Our Advantages in Motor Stator and Rotor Stamping
Motor stators and rotors are the key parts of electric motors, formed by laminating hundreds of thin silicon steel sheets. At Yixing Technology, we understand that precision is paramount. With 20+ years of experience, we provide not only high-performance progressive dies but also flexible Mold Manufacturing to meet your specific production needs.
Motor Stator & Rotor Stamping — Manufacturing Capability
| Capability Item | Specification |
|---|---|
| Feed Tolerance | ±0.02 mm |
| Cutting Edge Tolerance | ±0.01 mm |
| Die Life | 150 million strokes (tungsten carbide punches) |
| Stamping Speed | 300–1,500 SPM |
| Material Utilization | 90% |
| Applicable Material | Silicon steel (non-oriented / oriented) |
| Strip Thickness | 0.35 mm / 0.5 mm / 0.65 mm |
| Core Features | Self-riveting, rotor skew, large-angle rotation, automatic stacking |
| Die Steel | SKD11, DC53, Tungsten carbide (YC20C, YG20) |
| Press Tonnage | 100–600 T |
| Number of Stations | Up to 10+ (progressive die) |
Material We Supported
| Material Type | Common Grade | Thickness |
|---|---|---|
| Non-Oriented Silicon Steel | 50W470, 50W600 | 0.35–0.65 mm |
| Oriented Silicon Steel | 30Q120, 30Q130 | 0.23–0.35 mm |
Applications of Stator & Rotor Stamping
Stator and rotor stamping produces laminated magnetic cores for electric motors across key industries:
- New Energy Vehicle (NEV) Drive Motors – high-efficiency traction cores for electric vehicles
- Industrial Motors – induction, servo, and pump motor cores
- Home Appliance Motors – compressor, washing machine, and fan cores
- Power Tools & UAV Micro Motors – compact, high-speed cores for drills, grinders, and drones
With progressive dies, self-riveting, rotor skew, and automatic stacking, we deliver high-speed, high-precision core stamping for all these applications.
Main process
Based on different quantities and complexity, there’s 2 kind process we use.
1. High-Speed Precision Progressive Dies
For mass production, our progressive dies combine massive scale with microscopic precision:
1）Exceptional Accuracy
Feed tolerances of ±0.02mm and cutting edge tolerances of ±0.01mm, achieved through advanced wire EDM and grinding.
2）150 Million Strokes Mold Life
Critical punch pins use tungsten carbide, engineered for over 150 million strokes. Ultra-precision guiding systems ensure decades of consistent performance.
3）Automatic Lamination Riveting
Special riveting points automatically interlock each new lamination with the previous one, forming complete motor cores directly in the die. No secondary operations needed.
4）Maximum Material Utilization
By reasonable design, we can achieve 90% material efficiency.
5）Zero-Burr Blanking
Precisely controlled mold clearance and mirror-finished carbide edges.
6）Sustained Precision
Even the mold runs at 300–1,500 strokes per minute, our expertise in materials, heat treatment, and assembly ensures the position is stable and does not shift.
2. Flexible Mold for Rapid & Small Quantity
We know that traditional tooling can be expensive and time-consuming. We also provide more flexible molds for Rapid & small quantity Manufacturing solutions.
WEDM-LS (Wire EDM Low Speed)
To ensure mold precision: We utilize high-precision WEDM-LS to produce molds with tight tolerances, which are needed by motor stator and rotor applications.
Whether you need the high-speed efficiency of Progressive Dies or the flexibility of Mold Manufacturing, our 20+ years of expertise ensure that every motor core meets the highest standards of performance and durability.
Our Process Flow
DFM → Material → Die Mfg → Assembly → T1 → Small Batch → Mass Production
Why Choose Yixing Technology?
Our company excels in meeting these requirements through our advanced process capabilities and expertise:
1. PRECISION
To ensure reliable motor performance, critical features such as feed tolerance and cutting edge tolerance must be held within ±0.02 mm and ±0.01 mm. This requires molds with superior precision. Our machining equipment's tolerances reach ±2 µm, significantly exceeding the standards of stamping dies.
2. HIGH MATERIAL UTILIZATION
Silicon steel is costly, so every bit of material counts. Through optimized strip layout and nesting design, we achieve material utilization up to 90%, reducing waste and lowering per-piece cost without compromising core quality.
3. MULTI-PROCESS INTEGRATION
Stator and rotor cores require multiple operations—such as blanking, slot punching, self-riveting, rotor skew, rotation, and automatic stacking—integrated into a single progressive die. Our mold designers specialize in combining complex, multi-process operations into one die.
4. HIGH-SPEED DURABILITY
Because of the high-volume demand for motor cores, the mold often needs 300–1,500 strokes per minute. To support continuous and high-speed operation, our molds are made from high-rigidity, high-toughness materials, such as SKD11, DC53, and tungsten carbide alloys, with die life up to 150 million strokes, ensuring durability and long service life.
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- Mobile: +8615000908770
- Tel: +86-21-51662821
- WhatsApp: 8615000908770
- Email: contact@yx-molding.com
- Address: Room 323, Building B, Hongchun Business Park, No. 980 Qinghewan Road, Qingpu District, Shanghai
