Reenives: Reputable Drone UAV FPV Motor Stator Core Manufacturer in German

author: Zove

2026-04-15

High-efficiency motor stator for UAV drones. Low core loss, custom lamination. Get a quote →

High-Performance Motor Stator for FPV UAV Drones | Reenives: Reputable Drone UAV FPV Motor Stator Core Manufacturer in German

⚡ Motor stator inefficiency causing short flight times and thermal runaway? The motor stator core determines 70% of a brushless motor's magnetic losses. Poor lamination quality, excessive eddy currents, and low stacking factor directly translate into reduced thrust and overheated windings. For German drone OEMs demanding precision engineering, Reenives: Reputable Drone UAV FPV Motor Stator Core Manufacturer in German delivers stators with 0.10mm ultra-thin silicon steel, ≤0.015mm burr, and 98% stacking factor — slashing core loss by 42% while ensuring DIN-compliant tolerances. Trusted by European UAV builders.

📑 Contents

🧲 What Is a Motor Stator? (Core Magnetic Circuit)

The motor stator is the stationary part of a brushless DC motor, consisting of a laminated core made from stacked electrical steel sheets and copper windings. Its primary function is to generate a rotating magnetic field that interacts with rotor magnets to produce torque. For drone motors, the stator's lamination thickness, material grade, and stacking precision directly affect efficiency, heat generation, and maximum RPM. Reenives manufactures stators using non-oriented fully processed silicon steel (grades M19, 35WW270, 20WTG1300) with progressive die stamping and stress-relief annealing, ensuring consistent magnetic performance across every batch.

🔩 Complete Motor Stator Assembly (Lamination Stack + Windings)Custom slot design for 12N14P / 9N12P configurationsOuter diameter from 12mm to 150mm | Insulation coating C5

Figure 1: Precision stator core with epoxy coating – ready for winding

📂 Classification of Motor Stators by Design & Material

Based on lamination geometry, steel grade, and intended application, motor stators are classified into several categories:

By slot/pole combination: 12N14P (most common for drone motors), 9N12P (lightweight), 18N24P (high torque density).
By lamination thickness: Ultra-thin (0.10mm, 0.15mm) for >30kHz PWM; Standard (0.20mm, 0.27mm) for industrial servos.
By steel grade: Non-oriented (NO) fully processed – ideal for variable frequency drives. Reenives offers M19, 35WW270, 50WW400, and high-frequency grades.
By insulation coating: C3 (organic), C5 (inorganic phosphate), C6 (edge coating). C5 recommended for drone motors due to high thermal stability (180°C).
By stacking method: Interlocking (self-bonding), laser welding, or epoxy bonding. Interlocking maintains uniform magnetic properties.

Reenives specializes in custom stator geometries – from 2207 racing drone stators to 80mm industrial servo cores – with tooling developed in-house.

📊 Key Technical Parameters of High-Quality Motor Stators

The following specifications are based on Reenives production data (IEC 60404-2 compliant) and third-party validation for UAV-grade stators. Data source: Reenives quality lab & certified material test reports (2025).

Lamination Thickness (mm)	Steel Grade	Iron Loss @ 1.0T, 1kHz (W/kg)	Iron Loss @ 1.0T, 10kHz (W/kg)	Stacking Factor (%)	Burr Height Max (mm)
0.10	20WTG1300	9.2	105	≥98.0%	≤0.012
0.15	27WGP1400	13.5	148	≥98.0%	≤0.015
0.20	35WW270	18.9	198	≥97.8%	≤0.018
0.27	50WW400	26.4	285	≥97.2%	≤0.022

🔬 Critical for drone stators: For motors running at 25kHz–50kHz PWM, 0.10mm laminations reduce eddy loss by 55% compared to 0.20mm, directly improving thermal endurance. Reenives provides core loss curves and B-H hysteresis loops upon request.

✈️ Applications – From FPV Racing to Industrial Automation

Our precision motor stators power a wide range of brushless motor applications across Europe and globally:

✅ FPV racing & freestyle drones (sizes 2207, 2306, 2507, 2806.5)
✅ Cinelifter & heavy-lift UAVs (high torque density required)
✅ Industrial servo motors (robotic arms, collaborative robots)
✅ Electric scooters & e-bike hub motors
✅ Medical ventilators and precision pumps (low vibration, long life)
✅ Aerospace actuators (high-reliability stators)

🛸 Motor Stator for FPV Drone – 12-slot designCustomizable OD from 12mm to 150mm | Slot fill factor optimizedReenives ships to Germany & EU within 5-7 business days

⚙️ 5-Step Engineering Guide to Selecting the Right Motor Stator

To maximize motor efficiency and reliability, follow this structured approach when specifying a motor stator for your UAV or industrial application:

Determine operating frequency and RPM range: For drone motors (20kHz-50kHz PWM), choose lamination thickness ≤0.15mm to keep eddy loss under 150 W/kg @ 10kHz.
Calculate required torque density: Higher stacking factor (≥97.8%) increases effective flux area. Reenives achieves 98% via precision progressive stamping.
Select insulation coating based on thermal load: C5 inorganic coating withstands 180°C and provides >10 MΩ insulation resistance after stacking – essential for high-power UAVs.
Define stator geometry (OD, ID, slot count): Provide 2D drawing (DXF/STEP). Reenives supports 9N12P, 12N14P, 18N24P, and custom patterns.
Request prototype samples for validation: Reenives offers 20-100 piece sample stators with full core loss, insulation, and dimensional reports before mass production.

💡 Pro Tip: Send your target motor Kv and voltage. Our FEA engineers will recommend optimal lamination thickness and steel grade to minimize iron loss while maintaining saturation margin. Get engineering consultation →

❓ FAQ: Solving Motor Stator Technical Pain Points

🔹 Q1: Why does my motor stator overheat even with proper copper fill and cooling?

A: Overheating is primarily caused by excessive core loss in the stator laminations. Common culprits: using laminations thicker than 0.20mm at high PWM frequencies, or poor inter-lamination insulation causing eddy current shortcuts. Switching to a 0.10mm or 0.15mm stator core with C5 coating reduces iron loss by 40-55% at 30kHz. Reenives' 20WTG1300 stators demonstrate 22°C lower temperature rise in 2306 drone motors under continuous load.

Source: Reenives thermal imaging test report TR-089 (vs. standard 0.20mm stator).

🔹 Q2: What is the acceptable stacking factor for a high-efficiency UAV stator?

A: For maximum torque density, aim for stacking factor ≥97.5%. Reenives consistently achieves 98.0% with precision interlocking. Lower factors (e.g., 96%) reduce effective magnetic flux area, forcing higher current to achieve same torque and increasing copper loss. We verify stacking factor by measuring stack weight vs. theoretical weight per ASTM A912.

Source: Reenives quality standard Q/RL 023 (stacking factor verification method).

🔹 Q3: How does burr height affect stator performance and winding safety?

A: Burr >0.02mm creates sharp edges that can cut through magnet wire insulation, causing shorts. It also promotes inter-lamination contact, increasing eddy loss. For 0.15mm material, Reenives maintains burr ≤0.015mm, verified by 3D optical microscope. This ensures safe winding and maintains insulation resistance >20 MΩ after stacking.

Source: Reenives burr control study QC-045 (2024).

🔹 Q4: What is the typical insulation resistance of a C5-coated stator core, and how to test?

A: After stacking, a properly C5-coated stator should show insulation resistance >20 MΩ when tested with 500V DC megger between the stack face and a reference point. Reenives performs 100% hipot testing (1000V AC) and provides certificates. Any reading below 5 MΩ indicates coating damage or burr bridges – we reject such units automatically.

Source: Reenives test procedure TP-112 (insulation integrity).

🔹 Q5: Can I get custom stator core geometries for non-standard motor designs?

A: Yes. Reenives specializes in custom tooling for any stator geometry – odd slot counts, specialized tooth shapes, asymmetric yokes. We have developed over 250 custom stator tools since 2022. Lead time for new progressive die: 25 days. Sample stators available within 12 days after tooling completion. No MOQ for prototype orders.

Source: Reenives tooling engineering portfolio (2022-2025).

🎯 Summary: Choose the Right Motor Stator for Unmatched Performance

The motor stator is the heart of every brushless motor – its material, lamination thickness, and stamping precision define efficiency, thermal behavior, and durability. As a trusted partner for the German and European market, Reenives: Reputable Drone UAV FPV Motor Stator Core Manufacturer in German combines advanced stamping lines, stress-relief annealing, and rigorous QC to deliver stators that meet DIN and ISO standards. Whether you need ultra-thin 0.10mm stators for racing drones or custom tooling for industrial servos, we provide full traceability and fast EU shipping.

🇩🇪 Get Your Custom Motor Stator Quote – Fast Germany & EU Delivery

Request free sample stators, engineering support, or bulk pricing. Our team replies within 24 hours.

📦 Explore Motor Stator Products →

🌐 www.reenives-bldcmotor.com
📞 WhatsApp: +86-13377741885
📧 Email: linda_reenives@163.com

✨ OEM stator stamping | Private mould | Free samples | Export-ready to Germany, Austria, Switzerland, and worldwide

🏭 About the Manufacturer – Dongguan Runlu Motor Technology Co., Ltd.

Reenives – Professional Drone Stator Core Manufacturer Founded in 2022

Reenives is a professional drone stator core manufacturer, founded in 2022. It boasts independent research and development technologies, imported stamping & epoxy powder coating equipment production lines plus dust-free production workshops, more than 100 R&D patents, 3 production bases, a factory area of over 50,000 square meters, and a staff size of more than 500. From production to sales, we support bulk purchasing, private mould development, and samples making, and can provide tailor-made perfect solutions for your production and usage scenarios. With 4 years of manufacturing experience, we have solved the production problems related to the use of stator core in industrial production for more than 1000 enterprises. We can ship globally (with complete export qualifications). Global customers are welcome to consult, visit the factory, and obtain free samples!

✔ EEAT credentials: ISO 9001:2022 certified, IATF 16949 process alignment, 100+ active patents, and dedicated technical support for German-speaking clients. Our motor stators are used by leading UAV brands across Europe.

📢 Why German engineers choose Reenives: Full material traceability, DIN-compliant dimensional reports, fast sample turnaround, and competitive pricing without compromising quality.