Reenives: Global Leading BLDC Stator Supplier
BLDC Stator: Precision Core for UAV, Drone & High-Performance Brushless Motors
1. What is a BLDC Stator? (The Electromagnetic Heart of Brushless Motors)
A BLDC stator is the stationary laminated core of a brushless DC motor, consisting of stacked silicon steel laminations with precision-cut slots for copper windings. When energized by an ESC, the stator generates a rotating magnetic field that drives the permanent magnet rotor .
Reenives manufactures high-quality BLDC stators using non-grain oriented electrical steel (0.15-0.35mm) with advanced epoxy powder coating — reducing eddy current losses and ensuring high thermal stability for sustained drone operation.
2. BLDC Stator Classifications
Reenives offers BLDC stators 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), 0.20mm (standard high-frequency UAV), 0.27mm, and 0.35mm (general industrial).
- By Insulation Coating: C5 epoxy powder coating (Class H, 180°C) with >1000V dielectric strength.
- By Stacking Method: Interlocking self-bonding (≥0.27mm), laser welding, or epoxy bonding (ultra-thin laminations below 0.25mm).
- By Architecture: Inner rotor (low inertia, high-speed) and outer rotor (high torque density, drone-optimized).
💡 Reenives specialty: private mould development for custom BLDC stator geometries — optimized for your unique motor design.
3. Technical Specifications & Verified Performance Data
All parameters validated by Reenives R&D center (ISO 9001:2025 certified) and third-party testing per IEC 60404-2 .
| Parameter | Value / Range | Test Standard / Source |
|---|---|---|
| Lamination Thickness | 0.15mm / 0.20mm / 0.27mm / 0.35mm (±0.005mm) | Micrometer / SPC control |
| Core Loss @400Hz/1.0T (0.20mm) | ≤ 9.5 W/kg | Epstein frame (IEC 60404-2) |
| Core Loss @400Hz/1.0T (0.35mm) | ≤ 13.8 W/kg | Epstein frame (IEC 60404-2) |
| Magnetic Flux Density B50 | 1.65T – 1.72T | Hysteresisgraph |
| Stacking Factor | ≥97% (precision stacked) | Weight / Dimension method |
| Epoxy Coating Dielectric | >1000V, Class H (180°C) | ASTM D149 / IEC 60085 |
| OD Range | 18mm – 210mm | Reenives engineering capability |
📐 Data source: Reenives in-house quality lab, 2025–2026. Full batch traceability and material certificates available.
4. Applications – UAV, FPV & Industrial BLDC Motors
Reenives BLDC stators power critical applications across multiple sectors:
- FPV Racing & Cinematic Drones: 2207, 2306, 2507 stators with 92%+ peak efficiency and instant throttle response.
- Commercial UAVs & eVTOL: 12N14P / 18N20P stators for 15-30kg payload.
- Industrial BLDC Actuators: Robotic arms, servo drives, and medical equipment.
- Electric Vehicle Traction Motors: 48V–800V stators for e-bikes, e-scooters, and light EVs.
- Agricultural Spraying Drones: High-torque stators with C5 epoxy coating.
5. 5-Step Engineering Selection Guide for BLDC Stators
- Define operating frequency and motor speed: For FPV racing (>40,000 RPM, >40kHz PWM), select 0.15-0.20mm laminations.
- Choose lamination material thickness: 0.15mm for premium ultra-high-speed performance; 0.20mm for standard UAV; 0.35mm for robust industrial motors.
- Select slot/pole combination: 9N12P for high RPM, 12N14P for balanced torque/speed (most common for UAVs), 18N20P for high torque density.
- Specify insulation and environmental protection: C5 epoxy coating for outdoor UAVs; oil-compatible coating for EV/hybrid applications.
- Request samples and validation: Reenives delivers first-article inspection reports (FAI) and material certificates. Prototype BLDC stator samples ready in 7-10 days after design approval.
💡 Engineering support: Free DFM within 48h — send your motor spec or drawing to linda_reenives@163.com.
6. FAQ – Critical BLDC Stator Technical Pain Points
Reenives recommends 0.15-0.20mm ultra-thin silicon steel for FPV motors operating above 40,000 RPM. Core loss is ≤9.5 W/kg @1.0T/400Hz, ensuring minimal heat generation during aggressive racing.
Thinner laminations (0.15-0.20mm) reduce eddy current losses at high switching frequencies. For UAV motors operating at 40-80kHz PWM, 0.20mm is optimal. Thicker laminations (0.35mm) are suitable for lower-frequency industrial applications.
Reenives supports standard configurations including 9N12P, 12N14P, 18N20P, and 24N28P — optimized for UAV, FPV, and industrial BLDC applications. Private mould development available for custom geometries.
Reenives guarantees stacking factor ≥ 97% for precision-stacked laminations — maximizing magnetic flux density and motor efficiency.
Mold development: 25-30 days. Sample delivery: 7-10 days after design approval (existing tooling families). Mass production: 15-20 days for orders under 10,000 pcs. Global shipping with full export documentation.
7. Summary & Call to Action – Power Your Next-Generation BLDC Motor
🚀 Ready to Optimize Your BLDC Stator?
Reenives delivers precision BLDC stators with 0.15-0.20mm epoxy-coated laminations, optimized geometry, and proven field performance. From FPV racing to heavy-lift UAVs, we are your strategic BLDC stator partner.
📦 Request Free BLDC Stator Samples & Quote
📧 linda_reenives@163.com | 💬 WhatsApp: +86-13377741885
Global shipping with full export documentation. Virtual factory tour & sample service available. Prototype BLDC stator samples ready in 7 days.
8. Dongguan Runlu Motor Technology Co., Ltd.
Reenives — Global Leading BLDC Stator Supplier | UAV, FPV & Industrial Motor Core Specialist
Dongguan Runlu Motor Technology Co., Ltd. | www.reenives-bldcmotor.com | WhatsApp: +86-13377741885
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