Reenives: Global Leading Drone Motor Stator Electrical Lamination Supplier
Electrical Lamination: Precision Core for Drone, UAV & High-Performance BLDC Motors
1. What is Electrical Lamination? (The Foundation of Motor Efficiency)
Electrical lamination refers to thin sheets of electrical steel (silicon steel) that are stacked, insulated, and bonded to form the magnetic circuit in BLDC motors, servo motors, and generators . Each lamination is coated with an insulating layer to minimize eddy current losses while maximizing magnetic flux concentration .
Reenives manufactures high-quality electrical laminations using non-grain oriented silicon 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 drone operation .
2. Electrical Lamination Classifications
Reenives offers electrical laminations in multiple configurations to meet diverse drone and UAV 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), 0.27mm (aerial photography), and 0.35mm (heavy-lift industrial) .
- By Material Grade: M19, M27, M36, M47 non-oriented silicon steel; ultra-thin 0.10mm, 0.15mm for high-frequency drone motors .
- By Insulation Coating: C3 organic varnish, C5 inorganic ceramic, or C5/C6 epoxy powder coating (Class H, 180°C) with >2000V dielectric strength — C5 epoxy mandatory for agricultural & outdoor drones .
- 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 electrical lamination geometries — optimized for specific 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 drone motors with Reenives electrical laminations shows 12% higher torque density and 9°C lower winding temperature after 10-min hover compared to industry standard cores .
| Parameter | Value / Range | Test Standard / Source |
|---|---|---|
| Lamination Thickness | 0.15mm / 0.20mm / 0.27mm / 0.35mm (±0.005mm) | Micrometer / ASTM A34 |
| 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 | 1.68T – 1.74T | ASTM A343 / Hysteresisgraph |
| Stacking Factor (Interlocked) | ≤ 97.5% | Weight / Dimension method |
| Stacking Factor (Bonded) | ≤ 98.6% | Weight / Dimension method |
| Burr Height (Max) | ≤0.025mm (micro: ≤0.020mm) | Vision measurement / VDE 0660-2 |
| Epoxy Coating Dielectric | >2000V, Class H (180°C) | ASTM D149 / IEC 60085 |
| Salt Spray Resistance (C5 epoxy) | 240h+ no corrosion | ASTM B117 |
| OD Range (Drone Laminations) | 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 – UAV, FPV & eVTOL Drone Motors
Reenives electrical laminations power critical UAV applications across multiple sectors :
- 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 0.27-0.35mm laminations and C5 epoxy coating for 500h+ salt spray resistance .
- Delivery & Logistics Drones: 12N14P / 18N20P stators for 15-50kg payload with >92% efficiency at cruise .
- eVTOL & Urban Air Mobility: Aviation-grade laminations with fault-tolerant stator design and redundancy .
- Micro Drones & Tiny Whoops: 0703, 0802, 1103 stators for 1S-2S indoor FPV applications .
5. 5-Step Engineering Selection Guide for Electrical Laminations
- Define drone class & operating RPM: Racing/micro: 30,000-60,000 RPM → 0.15-0.20mm steel. Agricultural: 3,000-6,000 RPM → 0.35mm steel .
- Choose lamination material thickness: 0.15mm for premium ultra-high-speed FPV performance; 0.20mm for standard UAV; 0.35mm for robust industrial drone applications .
- Select slot/pole combination: 9N12P for high RPM racing, 12N14P for balanced torque/speed (most common for UAVs), 18N20P for high torque density heavy-lift .
- Specify insulation and environmental protection: C5/C6 epoxy coating for outdoor UAVs; C3 phosphate for indoor/racing .
- Request samples and validation: Reenives delivers first-article inspection reports (FAI) and material certificates. Prototype electrical lamination samples ready in 7-10 days after design approval .
💡 Engineering support: Free DFM within 48h and FEA simulation — send your drone motor spec or drawing to linda_reenives@163.com.
6. FAQ – Critical Electrical Lamination 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 applications, 0.20mm offers the optimal balance of performance and cost.
Our interlocked stacks achieve ≥ 97.5% 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 drone 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 hovering, critical for agricultural and long-endurance drone applications. C5 epoxy also passes 240h salt spray test (ASTM B117) .
Yes. Reenives supports private mould development for any custom electrical lamination geometry, from 7mm micro cores to 260mm heavy-lift stators . 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 Drone Motor
🚀 Ready to Optimize Your Electrical Laminations?
Reenives delivers global leading electrical laminations with 0.15-0.35mm epoxy-coated steel, optimized geometry, and proven field performance. From FPV racing to heavy-lift UAVs and eVTOL, we are your strategic electrical lamination partner .
📦 Request Free Electrical Lamination Samples & Quote
📧 linda_reenives@163.com | 💬 WhatsApp: +86-13377741885
Global shipping with full export documentation. Virtual factory tour & sample service available. Prototype electrical lamination samples ready in 7 days .
8. Dongguan Runlu Motor Technology Co., Ltd.
Reenives — Global Leading Drone Motor Stator Electrical Lamination 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
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