Large Drone Motors | Reenives: Valuable Large Drone Motors Stator Laminations Supplier in China

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⚙️ What is a Large Drone Motor Stator Core?

A large drone motor stator core is a precision-stacked lamination assembly designed for high-torque, high-power brushless motors used in heavy-lift UAVs (payloads 20-200kg). These stators typically feature outer diameters from 80mm to 200mm, requiring thicker laminations (0.35-0.50mm) to handle high magnetic flux without saturation. Reenives large drone stator cores use grain-oriented silicon steel (50A470, 35PN210 grades) with progressive die stamping and full epoxy powder coating — achieving saturation flux density >1.72T while maintaining burr height <0.03mm for reliable winding insulation.

📂 Stator Lamination Classification for Large Drone Motors

Reenives supplies four specialized stator lamination series for large drone applications (10kW – 50kW power range):

• Series HD-35 (Heavy-lift balanced) – 0.35mm 35PN210 steel. Iron loss ≤15.2 W/kg @1.0T/400Hz. Ideal for cargo drones (20-60kg payload).
• Series HD-50 (Max torque density) – 0.50mm 50A470 steel. Saturation flux ≥1.72T, optimized for low-speed high-torque eVTOL lift motors.
• Series HD-Epoxy (Full edge coating) – 50-70µm epoxy layer. Dielectric strength >3.0kV, anti-corrosion for agricultural spray drones.
• Series HD-Custom (Private mould) – Any diameter/slot combination (24N22P, 36N42P) for bespoke heavy UAV platforms.

📊 Technical Parameters & Verified Data (Reenives Lab + 3rd Party)

All values derived from Reenives in-house testing per IEC 60404-2 and verified by SGS. Our large drone stator laminations are trusted by cargo drone OEMs across North America, Europe, and Asia.

🔬 Data Source: Reenives R&D report #HD-2025-02 + TÜV pre-compliance 📄 ISO 9001:2025 certified stamping lines

🚁 Applications: Cargo Drones, Ag-UAVs & eVTOL

• Cargo & logistics drones (20-100kg payload): 0.35mm stator laminations balance efficiency and torque for long-range delivery.
• Agricultural spraying drones: Epoxy-coated 0.50mm stacks resist chemical corrosion and high humidity.
• eVTOL lift motors: High-saturation (1.72T) 0.50mm laminations provide peak torque for vertical takeoff.
• Industrial heavy-lift UAVs (firefighting, construction): Custom stator geometries with reinforced stacking for vibration resistance.

📐 6‑Step Selection Guide for Large Drone Motor Stator Laminations

For heavy UAV motor designers and sourcing managers, follow this engineering-driven method:

1. Step 1 – Define peak power & torque requirements: For 10-20kW motors → 0.35mm grade; for 20-50kW high-torque → 0.50mm grade.
2. Step 2 – Calculate stator outer diameter & slot count: Provide target motor size (e.g., 120mm OD, 36 slots) and Reenives engineers optimize tooth geometry.
3. Step 3 – Select coating type: Standard varnish or full epoxy coating for harsh environments (agricultural, marine).
4. Step 4 – Specify stacking method & tolerance: Interlocking for high-vibration cargo drones or laser welding for maximum rigidity.
5. Step 5 – Request magnetic FEA simulation: Reenives provides iron loss vs. torque density analysis within 5-7 working days.
6. Step 6 – Prototype sampling: Receive precision stator laminations with dimensional & magnetic property report within 15-18 days.

💡 Pro tip: Share your drone's MTOW (maximum takeoff weight) and desired flight time; our engineering team will recommend the optimal lamination grade and stack height for maximum efficiency — free consultation.

❓ FAQ – Large Drone Motor Stator Lamination Technical Concerns