Reenives: Global Leading Motor Stator Supplier
Motor Stator: Precision Laminated Core for UAV, Drone & High-Performance BLDC Motors
1. What is a Motor Stator? (The Electromagnetic Heart of BLDC Motors)
A motor 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 motor stators using non-grain oriented electrical steel (0.20mm/0.35mm) with advanced epoxy powder coating — reducing eddy current losses by up to 38% compared to conventional varnish insulation .
2. Motor Stator Classifications
Reenives offers motor 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 (EV traction) .
- By Material Thickness: 0.20mm (high-frequency UAV/FPV) and 0.35mm (general industrial).
- By Insulation Coating: Epoxy powder coating (Class H, 180°C–200°C) with ≥1800V dielectric strength .
- By Stacking Method: Interlocking self-bonding, laser welding, or epoxy bonding .
💡 Reenives specialty: private mould development for any custom motor stator geometry — 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, SAE J2360, and ASTM A912. Critical for UAV, drone, and industrial motor designers .
| Parameter | Value / Range | Test Standard / Source |
|---|---|---|
| Lamination Thickness | 0.20mm / 0.35mm (tolerance ±0.005mm) | Micrometer / SPC control |
| Core Loss @400Hz/1.0T (0.20mm) | ≤ 9.2 W/kg | Epstein frame (IEC 60404-2) |
| Core Loss @400Hz/1.0T (0.35mm) | ≤ 13.8 W/kg | Epstein frame (IEC 60404-2) |
| Saturation Flux Density B50 | 1.68T – 1.75T | Hysteresisgraph |
| Epoxy Coating Dielectric | >1800V, Thermal Class H (180–200°C) | ASTM D149 / IEC 60085 |
| Stacking Factor | ≥97.5% (epoxy bonded) | Weight / Dimension method |
| OD Range | 18mm – 250mm | Reenives engineering capability |
📐 Data source: Reenives quality assurance lab, 2025–2026. Full batch traceability and test certificates available.
4. Applications – UAV, Drone & Industrial BLDC Motors
Reenives motor stators power critical applications across multiple sectors:
- FPV Racing & Cinematic Drones: 2207, 2306, 2507 stators with instant throttle response .
- Commercial UAVs & eVTOL: 12N14P / 18N20P stators for 15-30kg payload .
- Electric Vehicle Traction Motors: 48V–800V stators for e-bikes, e-scooters, and passenger EVs .
- Industrial BLDC Actuators: Robotic arms, servo drives, and medical equipment .
- Agricultural Spraying Drones: High-torque stators with dust/water-resistant epoxy coating .
5. 5-Step Engineering Selection Guide for Motor Stators
- Define motor outer diameter and stack length: Based on torque and power targets (e.g., 28mm OD for 5-inch FPV drone) .
- Choose lamination material thickness: 0.20mm for high-frequency UAV (40-80kHz PWM) / 0.35mm for robust industrial BLDC motors .
- Select slot/pole combination: 9N12P for high RPM, 12N14P for balanced torque/speed, 18N20P for high torque density .
- Specify insulation and cooling: Epoxy coating for general use; oil-resistant coating for direct oil-cooled EV motors .
- Request samples and validation: Reenives delivers first-article inspection reports (FAI) and material certificates for PPAP .
💡 Engineering support: Free DFM within 48h — send your motor spec or drawing to linda_reenives@163.com.
6. FAQ – Critical Motor Stator Technical Pain Points
Reenives recommends 0.20mm silicon steel (20WTG1300) for high-RPM UAV BLDC motors. Core loss is ≤9.2 W/kg @1.0T/400Hz, ensuring minimal heat generation during aggressive FPV flights .
Our epoxy coating is rated Class H (180°C–200°C) continuous, with peak short-term tolerance up to 220°C for UAV and automotive applications .
Slot geometry impacts copper fill factor and thermal dissipation. Reenives optimizes slot profiles for ≥92% fill factor and improved cooling, reducing winding temperature by up to 15°C .
Yes. We offer oil-compatible epoxy coatings and slot designs with optimized cooling channels. Passes 1000h oil immersion test per SAE J2360 .
Mold development: 25-30 days; sample delivery: 7-10 days after mold completion; 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 Motor Stator?
Reenives delivers precision motor stator laminations with 0.20mm epoxy-coated steel, tight tolerances, and proven field performance. From UAV racing to EV traction, we are your strategic motor stator core partner.
📦 Request Free Motor Stator Samples & Quote
📧 linda_reenives@163.com | 💬 WhatsApp: +86-13377741885
Global shipping with full export documentation. Virtual factory tour & sample service available.
8. Dongguan Runlu Motor Technology Co., Ltd.
Reenives — Global Leading Motor Stator Supplier | UAV, Drone & Industrial Motor Core Specialist
Dongguan Runlu Motor Technology Co., Ltd. | www.reenives-bldcmotor.com | WhatsApp: +86-13377741885
Follow us: LinkedIn / YouTube / Facebook @ReenivesMotor
Reenives: Global Leading BLDC Motor Stator Supplier
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