Reenives: Reputable Drone&Robot brushless electric motor Stator Core Supplier
Brushless Electric Motor Stator Core: Reputable Precision for Drone, Robot & UAV Propulsion
- 1. What is a Brushless Electric Motor Stator Core?
- 2. Brushless Electric Motor Stator Classifications
- 3. Technical Specs & Verified Data
- 4. Robotics, UAV, FPV & eVTOL Applications
- 5. 5-Step Engineering Selection Guide
- 6. FAQ – Critical Technical Pain Points
- 7. Summary & Call to Action
- 8. Dongguan Runlu Motor Technology Co., Ltd.
1. What is a Brushless Electric Motor Stator Core? (The Electromagnetic Heart of Brushless Motors)
A brushless electric motor stator core is the stationary laminated magnetic structure of a brushless motor used in drones, robots, and unmanned systems. It consists of stacked silicon steel laminations with precision-cut slots for copper windings . In a brushless motor, electronic commutation—using semiconductor switches to turn stator windings on and off at the appropriate time—replaces the mechanical commutator of brushed motors, enabling higher efficiency and maintenance-free operation . When energized by an ESC, the stator generates a rotating magnetic field that drives the rotor—directly determining the motor's torque, efficiency, and thermal behavior.
Reenives manufactures high-quality brushless electric motor stator cores using non-grain oriented electrical steel (0.15-0.35mm) with advanced C5/C6 epoxy coating — reducing eddy current losses by up to 35% and ensuring high thermal stability for sustained robot and drone operation .
2. Brushless Electric Motor Stator Classifications
Reenives offers brushless electric motor stator cores in multiple configurations to meet diverse robotics and UAV application requirements :
- By Slot/Pole Config: 9N12P (high RPM racing), 12N14P (balanced torque/speed for UAVs & robotics, DLRK), 18N20P (high torque density), 24N28P (heavy-lift / eVTOL).
- By Material Thickness: 0.15mm (ultra-high performance FPV/robotics, 6S), 0.20mm (standard high-frequency UAV), 0.27mm (aerial photography), and 0.35mm (heavy-lift industrial).
- By Core Architecture: Segmented stator cores (modular for easy winding, ideal for 5-7 inch FPV racing and robotic joints) and integrated circular laminated stacks (one-piece for heavy-lift agricultural drones) .
- By Insulation Coating: C5 epoxy powder coating (Class H, 180°C) with >2000V dielectric strength; C6 grade for superior thermal conductivity and corrosion resistance (salt spray >96h) .
- By Stacking Method: Interlocking self-bonding (≥0.27mm), laser welding, or epoxy bonding (ultra-thin laminations below 0.25mm) .
💡 Reenives specialty: private mould development for custom brushless electric motor stator geometries — optimized for specific robotics and UAV platforms from FPV racing to heavy-lift logistics .
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 . Independent testing on robotics and drone motors with Reenives stator cores shows 12% higher torque density and 9°C lower winding temperature after sustained operation compared to industry standard cores .
| 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) | ≤ 9.2 W/kg | Epstein frame (IEC 60404-2) |
| Core Loss @400Hz/1.0T (0.35mm) | ≤ 10.5-13.8 W/kg | Epstein frame (IEC 60404-2) |
| Magnetic Flux Density B50 | 1.68T – 1.73T | Hysteresisgraph |
| Stacking Factor (Interlocked) | ≥ 97.5% | Weight / Dimension method |
| Stacking Factor (Bonded) | ≥ 98.2% | Weight / Dimension method |
| Burr Height (Max) | ≤0.025mm (micro: ≤0.020mm) | VDE 0660-2 / Vision measurement |
| Epoxy Coating Dielectric | >2000V, Class H (180°C) | ASTM D149 / IEC 60085 |
| Salt Spray Resistance (C5 epoxy) | 240h+ no corrosion | ASTM B117 |
| OD Range (Robotics/Drone Cores) | 7mm – 260mm (custom) | Reenives engineering capability |
📐 Data source: Reenives in-house quality lab, 2025–2026. SGS verification report available. Full batch traceability and material certificates .
4. Applications – Robotics, UAV, FPV & eVTOL Motors
Reenives brushless electric motor stator cores power critical robotics and UAV applications across multiple sectors :
- Robotic Joint Actuators: High torque density in minimal volume for collaborative robot arms, humanoid robotics, and servo modules — ideal for industrial automation .
- FPV Racing & Cinematic Drones: 2207, 2306, 2507 stators with 0.15-0.20mm laminations for 45,000+ RPM and 92%+ peak efficiency .
- Agricultural Spraying Drones: High-torque stators with wide slots for thicker copper windings, 0.27mm laminations for enhanced cooling, and C5/C6 epoxy coating for 500h+ salt spray resistance .
- Delivery & Logistics Drones: 12N14P / 18N20P stators for 15-50kg payload with >92% efficiency at cruise and extended range .
- eVTOL & Urban Air Mobility: Aviation-grade punching with fault-tolerant stator design and redundancy for mission-critical operations .
5. 5-Step Engineering Selection Guide for Brushless Electric Motor Stator Cores
- Define power, RPM, and torque requirements: For robotic joints (3,000-15,000 RPM), select 0.20-0.35mm laminations. For FPV racing (>40,000 RPM), select 0.15-0.20mm laminations .
- Choose lamination material thickness: 0.15mm for premium ultra-high-speed performance; 0.20mm for standard UAV/robotics; 0.35mm for robust industrial applications .
- Select slot/pole combination: 9N12P for high RPM racing, 12N14P for balanced torque/speed (most common for robotics & UAVs), 18N20P for high torque density .
- Specify insulation and environmental protection: C5/C6 epoxy coating for outdoor UAVs; C3 phosphate for indoor/racing applications .
- Request samples and validation: Reenives delivers first-article inspection reports (FAI) and material certificates. Prototype brushless electric motor stator 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.
6. FAQ – Critical Brushless Electric Motor Stator Core Technical Pain Points
Reenives recommends 0.15mm ultra-thin silicon steel for FPV motors operating above 40,000 RPM, and 0.20mm for most robotic servo applications. Core loss is ≤9.2 W/kg @400Hz/1.0T, ensuring minimal heat generation during aggressive flight or precision actuation . For most UAV and robotics applications, 0.20mm offers the optimal balance of performance and cost .
Our interlocked stacks achieve ≥ 97.5% stacking factor, while bonded cores reach 98.2% for maximum torque density . This directly increases magnetic flux density by ~6% compared to 96% stacking factor, improving motor torque density and overall efficiency for robotics and drone applications.
Reenives epoxy coating (40±5μm thickness) provides >2000V dielectric strength and thermal conductivity >0.85 W/m·K — 2x higher than standard C3 coatings . This reduces inter-lamination hotspot temperatures by 12-15°C during sustained operation, critical for agricultural drones, outdoor robotics, and long-endurance UAV applications. C5 epoxy also passes 240h salt spray test (ASTM B117) .
Yes. Reenives supports private mould development for any custom stator geometry, from 7mm micro cores for miniature robotics to 260mm heavy-lift stators for large UAVs . Submit 2D/3D drawing; MOQ from 500 pcs. Tooling lead time: 20 days; prototype samples: 7 days .
Absolutely. Our C5/C6 epoxy coating and 0.20mm grade maintain magnetic properties at -20°C to 180°C. The insulation withstands partial discharge at altitudes up to 5000m — critical for surveying drones, high-altitude UAVs, and robotics operating in extreme environments .
7. Summary & Call to Action – Power Your Next-Generation Robotics or Drone Motor
🚀 Ready to Optimize Your Brushless Electric Motor Stator Core?
Reenives delivers reputable drone & robot brushless electric motor stator cores with 0.15-0.35mm epoxy-coated laminations, optimized geometry, and proven field performance. From FPV racing to robotics and heavy-lift UAVs, we are your strategic brushless motor stator partner .
📦 Request Free Brushless Electric Motor Stator Samples & Quote
📧 linda_reenives@163.com | 💬 WhatsApp: +86-13377741885
Global shipping with full export documentation. Virtual factory tour & sample service available. Prototype brushless electric motor stator samples ready in 7 days .
8. Dongguan Runlu Motor Technology Co., Ltd.
Reenives — Reputable Drone & Robot Brushless Electric Motor Stator Core Supplier | UAV, Robotics & Industrial Motor Core Specialist
Dongguan Runlu Motor Technology Co., Ltd. | www.reenives-bldcmotor.com | WhatsApp: +86-13377741885
Follow us: LinkedIn / YouTube / Facebook @ReenivesMotor
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