Reenives: Global Leading BLDC Motor Stator Core Supplier
BLDC Motor Stator Core: Precision Foundation for UAV, FPV & High-Performance Brushless Motors
1. What is a BLDC Motor Stator Core? (The Electromagnetic Heart of Brushless Motors)
A BLDC motor stator core is the stationary laminated magnetic structure of a brushless DC motor, consisting of stacked silicon steel laminations with precision-cut slots for copper windings . The stator core is made up of laminated steel stampings stacked together to form a magnetic core, with coils of wire wound around the core and connected to the controller . When energized by an ESC, the stator generates a rotating magnetic field that drives the permanent magnet rotor — directly determining the motor's torque, efficiency, and thermal behavior .
Reenives manufactures high-quality BLDC 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 38% and ensuring high thermal stability for sustained drone operation .
2. BLDC Stator Core Classifications
Reenives offers BLDC motor stator cores in multiple configurations to meet diverse application requirements :
- By Slot/Pole Config: 9N12P (high RPM racing), 12N14P (balanced torque/speed for UAVs, DLRK), 18N20P (high torque density), 24N28P (heavy-lift / eVTOL) .
- By Material Thickness: 0.15mm (ultra-high performance FPV, 6S), 0.20mm (standard high-frequency UAV/industrial), 0.27mm, and 0.35mm (heavy-duty industrial) .
- By Core Architecture: Segmented stator cores (modular for easy winding, ideal for 5-7 inch FPV racing) 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 .
- 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 BLDC stator geometries — optimized for specific UAV, industrial, and automotive applications .
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. Reenives BLDC stator cores achieve up to 18% higher motor efficiency compared to conventional laminations .
| 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 @50Hz/1.0T (0.35mm) | ≤ 2.8 W/kg | Epstein frame (IEC 60404-2) |
| Magnetic Flux Density B50 | 1.62T – 1.73T | Hysteresisgraph |
| Stacking Factor (Interlocked) | ≤ 97% | Weight / Dimension method |
| Stacking Factor (Bonded) | ≤ 98.6% | Weight / Dimension method |
| Burr Height Control | ≤0.025mm (progressive die) | Vision Measurement System |
| Epoxy Coating Dielectric | >2000V, Class H (180°C) | ASTM D149 / IEC 60085 |
| OD Range (Stator Cores) | 18mm – 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 – UAV, FPV & Industrial BLDC Motors
Reenives BLDC motor stator cores power critical UAV applications across multiple sectors :
- FPV Racing & Cinematic Drones: 2207, 2306, 2507 stator cores with 0.15-0.20mm laminations for 45,000+ RPM and 92%+ peak efficiency .
- Commercial UAVs & eVTOL: 12N14P / 18N20P stator cores for 15-30kg payload with extended flight endurance .
- Agricultural Spraying Drones: High-torque stator cores with C5/C6 epoxy coating offering 500h+ salt spray resistance .
- Industrial BLDC Actuators & Drives: Precision stator cores for robotics, servo drives, and automation equipment .
- Electric Vehicle Traction Motors: 48V–800V stator cores for e-bikes, e-scooters, and light EVs .
5. 5-Step Engineering Selection Guide for BLDC Stator Cores
- Define power, RPM, and torque requirements: For FPV racing (>40,000 RPM), select 0.15-0.20mm laminations. For industrial motors (3,000-15,000 RPM), 0.20-0.35mm is optimal .
- Choose lamination material thickness: 0.15mm for premium ultra-high-speed performance; 0.20mm for standard UAV/industrial; 0.35mm for robust heavy-duty applications .
- Select slot/pole combination: 9N12P for high RPM racing, 12N14P for balanced torque/speed (most common), 18N20P for high torque density .
- Specify insulation and environmental protection: C5/C6 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 and FEA simulation — send your motor spec or drawing to linda_reenives@163.com.
6. FAQ – Critical BLDC Motor Stator Core Technical Pain Points
Reenives recommends 0.15mm ultra-thin silicon steel for FPV motors operating above 40,000 RPM. Core loss is ≤9.5 W/kg @400Hz/1.0T, ensuring minimal heat generation during aggressive racing . For most UAV and industrial applications, 0.20mm offers the optimal balance of performance and cost .
Our interlocked stacks achieve ≥ 97% 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 efficiency .
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 high-power and outdoor UAV applications .
Yes. Reenives supports private mould development for any custom stator geometry. Submit 2D/3D drawing; MOQ from 500 pcs. Tooling lead time: 20 days; prototype samples: 7 days .
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 Motor Stator Core?
Reenives delivers precision BLDC motor stator cores with 0.15-0.35mm epoxy-coated steel, optimized geometry, and proven field performance. From FPV racing to industrial automation, 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 core samples ready in 7 days .
8. Dongguan Runlu Motor Technology Co., Ltd.
🏭 Reenives – Professional BLDC & Drone Motor Stator Core Manufacturer (Founded 2022)
R&D 100+ patents 3 bases 50,000+ m² 500+ staff
Reenives is a recognized Global Leading BLDC Motor Stator Core Supplier in China and global markets . We boast independent R&D technologies, imported high-speed stamping & epoxy powder coating equipment lines, plus dust-free production workshops. Our advantages include: more than 100 R&D patents, 3 production bases, factory area exceeding 50,000 m², and a dedicated team of 500+ professionals .
From raw material to finished BLDC stator cores, we support bulk purchasing, private mould development, and rapid sample making. We provide tailor-made perfect solutions for your unique UAV, drone, industrial, and automotive production scenarios .
With 4 years of manufacturing experience (specialized in brushless drone and industrial motor cores), we have solved BLDC stator core production challenges for over 1000 enterprises worldwide — from drone OEMs to Fortune 500 motor manufacturers . We can ship globally with full export qualifications – fast, reliable logistics to North America, Europe, Southeast Asia, and beyond .
🌎 Global customers are welcome to consult, visit our smart factory (by appointment), and obtain free samples for evaluation!
🔍 Find Reenives easily: Official site: reenives-bldcmotor.com | LinkedIn: Reenives Motor Tech | YouTube: @ReenivesStator | Facebook: @ReenivesMotor .
Reenives — Global Leading BLDC Motor Stator Core Supplier | UAV, FPV & 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 Brushless DC Motor Stator Supplier
Related Article