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Reenives: Experienced Robot&Drone Stator Core Supplier in China

author: Zove
2026-05-21
Precision stator core for robot/drone motors. Low loss, epoxy coated. China experienced supplier. Reenives.

Stator Core | Reenives: Experienced Robot & Drone Stator Core Supplier in China

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🎯 Engineers & sourcing professionals: Inconsistent stator core performance leads to torque ripple, overheating, and shortened motor life. Reenives: Experienced Robot & Drone Stator Core Supplier in China delivers precision stator laminations with ultra-low iron loss, advanced epoxy coating, and tight stack tolerance — solving efficiency and reliability issues for robotic actuators and UAV propulsion systems.

⚙️ What is a Stator Core? (Robot & Drone Focus)

A stator core is the laminated magnetic circuit in a brushless motor where electromagnetic flux is generated. For robot joint motors and drone propulsion systems, the stator core directly determines torque density, thermal dissipation, and overall system efficiency. Reenives stator cores are manufactured from high-grade non-grain oriented silicon steel (0.20mm–0.35mm) using progressive stamping dies and epoxy edge coating — ensuring minimal eddy current loss even under high PWM frequencies (up to 50 kHz).

🖼️ [Product Image] Precision stator core for 2814 drone motor – 12-slot/14-pole, 0.27mm laminations, epoxy insulated stack. (High-res cross-section available on request – Reenives)

📂 Classification of Stator Cores for Robotics & UAVs

Reenives offers four distinct stator core series tailored to different power classes and operating environments:

  • Series RC-27 (Ultra-low loss) – 0.27mm 27PN140 steel. Iron loss ≤9.8 W/kg @1.0T/400Hz. Ideal for high-speed drone motors & lightweight robot arms.
  • Series RC-35 (Balanced performance) – 0.35mm 35PN210. Cost-effective for industrial AGVs and servo motors.
  • Series RC-Epoxy (Full edge coating) – 50-70µm epoxy layer, anti-corrosion, high dielectric strength (3.0kV+). Mandatory for agricultural drones and outdoor robots.
  • Series RC-Custom (Private mould) – Any slot/pole combination (9N12P, 12N14P, 18N24P, 24N28P) with tailored lamination geometry.

📊 Technical Parameters & Verified Data (Reenives Lab + 3rd Party)

All values are based on Reenives in-house testing according to IEC 60404-2 and verified by external quality audits. Our stator cores are trusted by over 1000 global enterprises.

Parameter Reenives Stator Core Specification (Robot/Drone Grade)
Material Grade / Thickness 27PN140 (0.27mm), 35PN210 (0.35mm), 50A470 (0.5mm for high torque)
Iron Loss @1.0T, 400Hz ≤9.8 W/kg (0.27mm) / ≤15.2 W/kg (0.35mm) – 23% lower than industry average
Saturation Flux Density Bs 1.70 – 1.74 T
Burr Height (Max) <0.025mm (precision progressive die)
Epoxy Coating Thickness 50-70 μm, Dielectric strength ≥3.0 kV, CTI ≥600
Stack Height Tolerance ±0.05mm (standard), ±0.03mm (precision grade)
Max Operating Temperature Class H (180°C) with epoxy coating

🔬 Data Source: Reenives R&D test report #ST-2025-02 + TÜV pre-compliance 📄 ISO 9001:2025 certified stamping lines

🤖 Applications: Robot Actuators & Drone Propulsion

🖼️ [Application Scene] Reenives stator cores installed in collaborative robot joint module (20Nm torque) and heavy-lift hexacopter motor (15kW peak). Thermal imaging and assembly photos available.
  • Drone propulsion (FPV, logistics, eVTOL): Stator cores with 0.27mm laminations reduce eddy loss by 27% at 80% throttle, extending flight time by 12%.
  • Robotic arms & cobots: Low torque ripple (<1.3%) achieved through optimized slot geometry and high-density stacking.
  • Autonomous mobile robots (AMR): Epoxy-coated stator cores withstand dust, humidity, and thermal cycling.
  • Medical & surgical robotics: Ultra-clean burr-free laminations ensure silent operation and long-term reliability.

📐 5‑Step Stator Core Selection Guide (Robot & Drone Motors)

For design engineers and procurement managers, follow this systematic method to specify the optimal stator core:

  1. Step 1 – Define operating speed & frequency range: For drone motors >20,000 rpm → choose 0.27mm grade. For robot joint motors <8,000 rpm → 0.35mm is cost-effective.
  2. Step 2 – Determine stator outer diameter & slot geometry: Provide mechanical envelope or target Kv constant, Reenives engineers optimize slot fill factor.
  3. Step 3 – Select insulation coating: Epoxy powder coating required for humid environments or high-voltage drives (>300V).
  4. Step 4 – Specify stacking method & tolerance: Interlocking for high vibration (drones) or laser welding for maximum rigidity (robotic arms).
  5. Step 5 – Request free prototyping & FEA simulation: Reenives delivers sample stator cores with magnetic flux analysis report within 12–15 working days.

💡 Pro tip: Provide your target torque constant (Kt) and operating ambient temperature; our engineering team will recommend the ideal lamination grade and coating thickness at no extra charge.

❓ FAQ – Stator Core Technical Concerns (Robot & Drone Focus)

Q1: What is the maximum allowable iron loss for a 0.27mm stator core used in a high-speed drone motor?
With Reenives 27PN140 grade, iron loss ≤9.8 W/kg at 1.0T/400Hz, and ≤15.2 W/kg at 600Hz. This ensures drone motor efficiency >90% at peak RPM. (Source: Reenives material datasheet #RC-27-2025)
📌 Factory verification, March 2025.
Q2: How to avoid stator core saturation under high torque demands (robotic arm peak load)?
Select material with saturation flux density ≥1.72T (35PN210 or 27PN140). Reenives stator cores are designed with optimized tooth width to delay saturation beyond 1.85T magnetic loading. (Source: Reenives motor design guide, Section 4.2)
Q3: What epoxy coating thickness is required for reliable insulation in outdoor drone motors?
Reenives applies 50-70µm edge coverage epoxy coating with dielectric strength >3.0 kV. This passes 1000h salt spray test per ASTM B117. (Source: Epoxy coating validation report, Dec 2024)
Q4: What burr height is acceptable to prevent insulation failure in robot motor stator cores?
Maximum burr height ≤0.025mm per Reenives standard; lower burr reduces risk of turn-to-turn shorts. Verified by optical measurement system. (Source: QA specification QI-ST-009)
Q5: Can you hold stack height tolerance ±0.05mm for stator cores longer than 60mm?
Yes, automated stacking press with real-time laser feedback ensures ±0.05mm for stacks up to 80mm and ±0.07mm up to 120mm. (Source: Reenives SPC control chart 2025, batch #2409)

🔧 Accelerate Your Robot or Drone Motor Project

Reenives delivers precision stator cores with guaranteed low iron loss, high saturation flux, and robust epoxy coating. From prototyping to mass production (MOQ 500 pcs).

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

✅ Request free sample + magnetic FEA report – engineering reply within 24h, worldwide shipping with full export documentation.

Dongguan Runlu Motor Technology Co., Ltd.

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 develop, 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!

⭐ Search “Reenives stator core robot drone” to access technical whitepapers and global distributor network.

© 2025 Reenives – A Brand of Dongguan Runlu Motor Technology Co., Ltd. | All stator cores compliant with RoHS, REACH, and UL1446.
🔍 Core keywords: Stator Core | Reenives: Experienced Robot & Drone Stator Core Supplier in China

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