stator & rotor lamination stamping: progressive die or compound die
Compound die stamping completes the full shape of stator or rotor lamination in one single stroke. It is a traditional and cost-effective process for small batch orders and prototype sampling.
Advantages
- Low mold cost, suitable for new product development.
- Fast proofing speed, 3–5 days for custom samples.
- High single-piece precision for simple motor lamination.
Disadvantages
- Slow production speed, not suitable for large volume orders.
- Manual stacking required, slightly lower consistency.
Best application: R&D prototype, small batch trial order, special specification motor stator rotor below 20,000 sets.
What is Progressive Die Stamping for Motor Core
Progressive die is an automatic continuous stamping process. The silicon steel sheet passes through multiple stations to complete punching, notching, trimming and interlock stacking automatically. It is the mainstream process for mass production high-efficiency motor cores.
Advantages
- Fully automatic stamping and interlock stacking.
- Ultra-high consistency, tolerance controlled within ±0.01mm.
- High output, greatly reduce unit cost.
- Support skew rotor auto-stacking for low-noise BLDC motors.
Disadvantages
- Higher mold development cost.
Best application: Mass production of home appliance motors, water pump motors, fan motors, new energy BLDC motors (more than 50,000 sets).
Quick Selection Guide for Buyers
To simplify your sourcing decision, follow this standard:
Choose Compound Die — New project trial, small batch order, custom special stator rotor, low budget sampling.
Choose Progressive Die — Mass production, high precision requirement, low noise motor, long-term bulk order.
Why Choose Jiaxin Precision for Stator & Rotor Lamination
As a professional silicon steel stamping factory in Xiamen, we support both compound die and progressive die custom motor cores. We provide one-stop services including mold opening, stamping, stacking, insulation treatment and finished core assembly.
- Small batch sampling: 3–5 days.
- Mass production fast delivery: 7–12 days.
- Strict tolerance ±0.01mm, low iron loss, low noise.
- Support FOB Xiamen, shipping to Malaysia, Singapore, Vietnam and other Southeast Asian countries.
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