A stator lamination stack is a precision-assembled bundle of thin silicon steel laminations that form the stationary magnetic core of a brushless DC motor. Each lamination is electrically insulated from its neighbors—typically by an epoxy coating—to block eddy currents that would otherwise circulate within the core and generate heat. The stack contains precision-cut slots for copper windings, and when energized by an ESC, it generates the rotating magnetic field that drives the rotor.

Reenives manufactures high-quality stator lamination stacks using non-grain oriented silicon steel (0.15-0.35mm) with advanced C5/C6 epoxy coating — reducing eddy current losses by up to 35% and achieving stacking factor ≥98.2%.

Reenives offers stator lamination stacks in 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 epoxy bonding (ultra-thin laminations below 0.25mm).
• By Insulation Coating: C5 epoxy powder coating (Class H, 180°C) with >2000V dielectric strength; C6 grade for superior thermal conductivity and corrosion resistance.

💡 Reenives specialty: private mould development for custom stator lamination stack geometries — optimized for specific UAV platforms from FPV racing to heavy-lift logistics.

All parameters validated by Reenives R&D center (ISO 9001:2025 certified) and third-party testing per IEC 60404-2, ASTM A677. Reenives precision lamination stacks achieve 12-18% higher motor efficiency compared to conventional stacking processes.

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

Reenives stator lamination stacks power critical applications across multiple sectors:

• FPV Racing & Cinematic Drones: 2207, 2306, 2507 stator stacks with 0.15-0.20mm laminations for 45,000+ RPM and 92%+ peak efficiency.
• Commercial UAVs & eVTOL: 12N14P / 18N20P stator stacks for 15-50kg payload with extended flight endurance.
• Agricultural Spraying Drones: High-torque stator stacks with C5/C6 epoxy coating offering 500h+ salt spray resistance.
• Industrial BLDC Actuators & Drives: Precision stator stacks for robotics, servo drives, and automation equipment.
• E-mobility & E-bike Hub Motors: Compact stator stacks for 100W-3kW auxiliary drives.

1. Define power, RPM, and torque requirements: For FPV racing (>40,000 RPM), select 0.15-0.20mm laminations. For heavy-lift UAVs (15,000-25,000 RPM), 0.20-0.27mm is optimal.
2. Choose lamination material thickness: 0.15mm for premium ultra-high-speed FPV performance; 0.20mm for standard UAV; 0.35mm for robust industrial applications.
3. Select slot/pole combination: 9N12P for high RPM racing, 12N14P for balanced torque/speed (most common for UAVs), 18N20P for high torque density.
4. Specify stacking method and insulation: Interlocking for 0.27mm+; epoxy bonding for sub-0.25mm; C5/C6 epoxy coating for outdoor UAVs.
5. Request samples and validation: Reenives delivers first-article inspection reports (FAI) and material certificates. Prototype stator lamination stack samples ready in 7-10 days after design approval.

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