Reenives: Global Leading Robot&Drone Motor Brushless Stator Core Supplier
Motor Brushless Stator Core: Global Leading Precision for Robot, Drone & UAV Propulsion
- 1. What is a Motor Brushless Stator Core?
- 2. Motor Brushless 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 Motor Brushless Stator Core? (The Electromagnetic Heart of Brushless Motors)
A motor brushless 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. 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 motor brushless 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. Motor Brushless Stator Classifications
Reenives offers motor brushless 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 motor brushless 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) | ≤ 8.9 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 | 1.68T – 1.73T | Hysteresisgraph |
| Stacking Factor (Interlocked) | ≤ 98.2% | Weight / Dimension method |
| Stacking Factor (Bonded) | ≤ 98.6% | Weight / Dimension method |
| Epoxy Coating Dielectric | >2000V, Class H (180°C) | ASTM D149 / IEC 60085 |
| OD Range (Robotics/Drone Cores) | 8mm – 260mm (custom) | Reenives engineering capability |
| Torque Density Advantage | +12-18% vs. industry avg | Independent robotics/drone motor test |
📐 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 motor brushless 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 Motor Brushless 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; anti-corrosion treatment for maritime/agricultural robotics.
- Request samples and validation: Reenives delivers first-article inspection reports (FAI) and material certificates. Prototype motor brushless 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 Motor Brushless 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 ≤8.9 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 ≥ 98.2% stacking factor, while bonded cores reach 98.6% 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. C6 grade offers superior corrosion resistance for maritime operations.
Yes. Reenives supports private mould development for any custom stator geometry, from 8mm 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 Motor Brushless Stator Core?
Reenives delivers global leading robot & drone motor brushless 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 stator partner.
📦 Request Free Motor Brushless Stator Samples & Quote
📧 linda_reenives@163.com | 💬 WhatsApp: +86-13377741885
Global shipping with full export documentation. Virtual factory tour & sample service available. Prototype motor brushless stator samples ready in 7 days.
8. Dongguan Runlu Motor Technology Co., Ltd.
Reenives — Global Leading Robot & Drone Motor Brushless 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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