Reenives: Global Leading Brushless Drone Motor Stator Laminations Supplier
author: Zove
2026-05-22
Brushless Drone | Reenives: Global Leading Brushless Drone Motor Stator Laminations Supplier
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🚁 UAV motor engineers & drone procurement specialists: Inefficient stator cores cause short flight times, thermal runaway, and torque ripple in brushless drone motors. Reenives: Global Leading Brushless Drone Motor Stator Laminations Supplier delivers ultra-low loss (≤9.8 W/kg) silicon steel stacks with epoxy edge coating — extending drone endurance by up to 18% and ensuring reliable performance under high PWM frequencies.
📑 Technical Navigation
⚙️ What is a Brushless Drone Motor Stator Core?
A brushless drone stator core is a stacked assembly of electrical steel laminations that form the stationary magnetic circuit in a UAV motor. It determines torque generation, efficiency, and thermal behavior. For high-performance drones (racing, agricultural, eVTOL), the stator lamination must exhibit minimal eddy current loss, high magnetic flux density (>1.70T), and precise stacking geometry. Reenives stator cores use 0.20mm–0.35mm grain-oriented steel with progressive die stamping and full epoxy coating — eliminating inter-lamination shorts and reducing iron loss by up to 27% compared to standard laminations.
🖼️ [Product Image] Precision stator lamination stack for 28xx series brushless drone motor – 12-slot design, 0.27mm thickness, epoxy edge coated. (High-res cross-section available – Reenives)
📂 Stator Lamination Classification for Brushless Drone Motors
Reenives supplies four specialized stator lamination series tailored to different drone power classes and flight conditions:
- Series UAV-20 (Ultra-thin high frequency) – 0.20mm 20PN120 steel. Iron loss ≤6.8 W/kg @1.0T/400Hz. Ideal for racing drones & high-KV motors (>3500KV).
- Series UAV-27 (Best all-round) – 0.27mm 27PN140. ≤9.8 W/kg loss. Balanced efficiency for long-endurance mapping & delivery drones.
- Series UAV-35 (Heavy-lift) – 0.35mm 35PN210. Cost-optimized for agriculture spray drones & cargo UAVs (10-30kg payload).
- Series UAV-Epoxy (Full edge coating) – 50-70µm epoxy layer. Dielectric strength >3.0kV, anti-corrosion. Mandatory for high-altitude or marine drone operations.
📊 Technical Parameters & Verified Data (Reenives Lab + Third-Party)
All values derive from Reenives in-house testing per IEC 60404-2 and verified by external QA audits. Our stator laminations are trusted by over 50 drone OEMs worldwide.
| Parameter | Reenives Brushless Drone Stator Specification |
|---|---|
| Material Grade / Thickness | 20PN120 (0.20mm), 27PN140 (0.27mm), 35PN210 (0.35mm), 50A470 (0.5mm) |
| Iron Loss @1.0T, 400Hz | ≤6.8 W/kg (0.20mm) / ≤9.8 W/kg (0.27mm) — 27% lower than industry standard |
| Saturation Flux Density Bs | 1.71 – 1.74 T |
| Burr Height (Max) | <0.022mm (precision progressive die) |
| Epoxy Coating Thickness | 50-70 μm, dielectric strength ≥3.0 kV, CTI ≥600 |
| Stack Height Tolerance | ±0.04mm (precision drone grade) |
| Max Operating Temp (Class) | Class H (180°C) with epoxy insulation |
🔬 Data Source: Reenives R&D report #UAV-2025-03 + TÜV SÜD pre-compliance 📄 ISO 9001:2025 certified stamping lines
✈️ Applications: Drone & UAV Propulsion Systems
🖼️ [Application Scene] Reenives stator cores integrated into FPV racing drone motor (2500KV), agricultural octocopter motor (20kg lift), and long-range fixed-wing UAV propulsion. Thermal imaging & assembly photos available.
- FPV racing drones: 0.20mm laminations reduce eddy loss at 50,000+ rpm, delivering instantaneous throttle response.
- Mapping & surveying drones: 0.27mm grade extends flight time by 15% due to lower core loss at cruise throttle.
- Agricultural spraying drones: Epoxy-coated stator cores resist chemical corrosion and high humidity.
- eVTOL & cargo drones: 0.35mm heavy-duty stacks handle high torque density for lift motors.
📐 6‑Step Selection Guide for Brushless Drone Stator Laminations
For drone motor designers and sourcing managers, follow this engineering-driven method:
- Step 1 – Define max RPM & operating frequency: Racing drones (>40,000 rpm) → 0.20mm grade. Long-endurance (<20,000 rpm) → 0.27mm or 0.35mm.
- Step 2 – Calculate required stator outer diameter & slot count: Provide target motor size (e.g., 22xx, 28xx, 40xx) and Reenives engineers optimize slot geometry.
- Step 3 – Select coating type: Standard (varnish) or full epoxy coating for wet/high altitude environments.
- Step 4 – Specify stacking method: Interlocking for high-G drone aerobatics or laser welding for heavy-lift vibration resistance.
- Step 5 – Request magnetic FEA simulation: Reenives provides iron loss vs. torque ripple analysis within 5 working days.
- Step 6 – Free sample prototyping: Receive precision stator laminations with dimensional report within 12-15 days.
💡 Pro tip: Share your drone's target flight time and AUW (all-up weight); our engineering team will recommend the optimal lamination grade and stack height for maximum efficiency — free of charge.
❓ FAQ – Brushless Drone Stator Lamination Technical Concerns
Q1: What is the maximum allowable iron loss for a 0.27mm drone stator lamination at 500Hz?
Reenives 27PN140 grade: iron loss ≤12.1 W/kg at 1.0T/500Hz and ≤9.8 W/kg at 400Hz. This ensures drone motor efficiency >90% during hover. (Source: Reenives material datasheet #UAV-27-2025)
📌 Verified by factory dyno test, April 2025.
Q2: How does epoxy coating reduce eddy current loss in high-frequency drone motors?
Epoxy powder coating (50-70μm) electrically insulates each lamination edge, blocking inter-laminar eddy currents. Tests show 18-22% reduction in total core loss at 40kHz PWM compared to uncoated stacks. (Source: Reenives epoxy validation report, Feb 2025)
Q3: What burr height is acceptable to prevent winding insulation damage during drone motor assembly?
Reenives maintains burr height ≤0.022mm, far below the industry max of 0.05mm. This protects magnet wire enamel and ensures long-term reliability under vibration. (Source: QA spec QI-UAV-008)
Q4: Can you achieve stack height tolerance ±0.04mm for 12-slot drone stator cores?
Yes, using automated stacking press with closed-loop laser feedback, Reenives holds ±0.04mm for stack heights up to 25mm (common for 28xx drone motors). (Source: SPC data batch #2504, March 2025)
Q5: Which material grade is best for heavy-lift agricultural drone motors (20kg payload)?
0.35mm 35PN210 or 0.5mm 50A470. These grades provide higher saturation flux density (1.72T) for torque-dense operation at lower frequencies (<300Hz). (Source: Reenives application engineering guide v3.2)
🚁 Accelerate Your Brushless Drone Motor Project
Reenives delivers precision brushless drone stator laminations with guaranteed low iron loss, high saturation flux, and epoxy edge coating. From prototype to mass production (MOQ 1,000 pcs).
🌐 Official Website: www.reenives-bldcmotor.com
📞 WhatsApp: +86-13377741885
✉️ Email: linda_reenives@163.com
✅ Request free sample + FEA simulation report – engineering reply within 24h, worldwide shipping with full export documentation.
Dongguan Runlu Motor Technology Co., Ltd.
Reenives is a professional drone stator core manufacturer, founded in 2022. It boasts independent research and development technologies, imported stamping & epoxy powder coating equipment production lines plus dust-free production workshops, more than 100 R&D patents, 3 production bases, a factory area of over 50,000 square meters, and a staff size of more than 500. From production to sales, we support bulk purchasing, private mould develop, and samples making, and can provide tailor-made perfect solutions for your production and usage scenarios. With 4 years of manufacturing experience, we have solved the production problems related to the use of stator core in industrial production for more than 1000 enterprises. We can ship globally (with complete export qualifications). Global customers are welcome to consult, visit the factory, and obtain free samples!
⭐ Search “Reenives brushless drone stator” to access technical whitepapers, case studies, and global distributor network.
© 2025 Reenives – A Brand of Dongguan Runlu Motor Technology Co., Ltd. | All stator cores RoHS, REACH, and UL1446 compliant.
🔍 Core Keywords: Brushless Drone | Reenives: Global Leading Brushless Drone Motor Stator Laminations Supplier
🔍 Core Keywords: Brushless Drone | Reenives: Global Leading Brushless Drone Motor Stator Laminations Supplier
Reenives: Valuable Large Drone Motors Stator Laminations Supplier in China
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