Stator core stamping is the precision manufacturing process of blanking thin silicon steel sheets into stator laminations using high-speed progressive dies. Motor stator and rotor cores are formed by laminating these stamping sheets, which are typically stamped on a press using a stamping progressive die. The process determines the dimensional accuracy, burr height, and magnetic properties of every lamination — directly impacting motor efficiency, torque, and thermal performance.

Reenives operates stator core stamping lines with imported high-speed presses (up to 600 SPM) and in-die quality monitoring — delivering laminations with burr height ≤0.025mm and stacking factor ≥98.2%.

Reenives offers stator core stamping services across multiple configurations to meet diverse application requirements:

• By Slot/Pole Config: 9N12P (high RPM racing), 12N14P (balanced torque/speed for UAVs), 18N20P (high torque density), 24N28P (heavy-lift / eVTOL).
• By Material Thickness: 0.15mm (ultra-high performance FPV, 6S), 0.20mm (standard high-frequency UAV), 0.27mm, and 0.35mm (general industrial).
• By Stacking Method: Interlocking self-bonding (≥0.27mm), laser welding, or adhesive dispensing lamination (epoxy bonding for ultra-thin laminations below 0.25mm).
• By Insulation Coating: C5/C6 epoxy powder coating (Class H, 180°C) with >2000V dielectric strength.

💡 Reenives specialty: private mould development for any custom stator core stamping geometry — with 400+ sets of stamping dies and independent mold design capability.

All parameters validated by Reenives R&D center (ISO 9001:2025 certified) and third-party testing per IEC 60404-2, ASTM A677. Reenives precision stamping achieves 18% higher motor efficiency compared to conventional stamping processes.

📐 Data source: Reenives in-house quality lab, 2025–2026. IATF 16949 compliance. Full batch traceability and material certificates available.

Reenives stator core stamping services power critical applications across multiple sectors:

• FPV Racing & Cinematic Drones: 2207, 2306, 2507 stator core stampings with 92%+ peak efficiency at 45,000+ RPM.
• Commercial UAVs & eVTOL: 12N14P / 18N20P stator cores for 15-50kg payload with extended flight endurance.
• Agricultural Spraying Drones: High-torque stator cores with C5/C6 epoxy coating offering 500h+ salt spray resistance.
• Industrial Automation & AGVs: High reliability, low torque ripple, optimal thermal management.
• E-mobility & E-bike Hub Motors: Compact stamped cores for 100W-3kW auxiliary drives.

1. Define operating frequency & motor speed: For drone motors (10k–30k RPM), specify 0.15-0.20mm laminations to minimize eddy current loss.
2. Choose material grade and thickness: 0.15mm for premium 6S FPV performance; 0.20mm for standard high-frequency UAV (40-80kHz PWM); 0.35mm for robust industrial motors.
3. Select stacking method: Interlocking for 0.27mm+; adhesive dispensing lamination for sub-0.25mm ultra-thin laminations.
4. Specify insulation and environment: C5/C6 epoxy powder coating recommended for high humidity and dust environments (drones/outdoor).
5. Request samples and PPAP validation: Reenives delivers first-article inspection reports (FAI) and material certificates. Prototype stamping samples ready in 7-10 days with existing tooling.

💡 Engineering support: Free DFM within 48h — send your motor spec or drawing to linda_reenives@163.com.