Reenives: Leading Drone BLDC AC Stator Core Supplier in China

author: Zove

2026-06-26

Boost motor efficiency with precision AC stators. Low eddy loss, high stacking factor. Reenives – trusted China supplier.

AC Stator Core – Precision Lamination for Drone BLDC & Industrial Motors

Reenives: Leading Drone BLDC AC Stator Core Supplier in China — delivering low-loss, epoxy-insulated stator cores that drive UAV efficiency and industrial motor performance.

📑 Contents
• What is an AC Stator Core? • AC Stator Classification • Technical Parameters & Certification Source • Applications (Drone Motors & Industrial) • Engineering Selection Workflow • FAQ – AC Stator Performance & Specs • Get Quote & Free Samples • Reenives Manufacturer Profile

⚙️ What is an AC Stator Core?

An AC stator core is the laminated magnetic structure used in brushless DC (BLDC) motors and AC induction motors to generate rotating magnetic fields. For drone motors, the stator core is the heart of electromagnetic conversion — its design directly impacts torque density, iron loss, and thermal management. Reenives manufactures AC stator cores from ultra-thin non-oriented silicon steel (0.20mm / 0.35mm) with advanced epoxy powder coating, ensuring low eddy current loss and high permeability. Our stators are engineered for 1000KV+ racing drones, heavy-lift UAVs, and industrial servo motors, delivering consistent back-EMF and minimal cogging torque. With precise stacking and vacuum annealing, Reenives AC stators achieve saturation flux density ≥1.68T and iron loss ≤10W/kg (@400Hz) – the benchmark for satisfactory stator performance.

🖼️ [Product Image] Reenives AC stator core – 12N14P configuration, 0.20mm laminations, epoxy coated. Custom OD 22–120mm for drone and industrial motors.

📂 AC Stator Classification – Tailored to Application

Reenives classifies AC stator cores based on lamination material, coating, and slot geometry to meet diverse engineering needs:

Drone/FVP Series (0.20mm ultra-thin): Optimized for 1000KV–2500KV motors, iron loss ≤10W/kg @400Hz, ideal for high-RPM FPV and racing drones.
Industrial High-Torque Series (0.35mm): For servo motors, e-scooters, and power tools – balance of cost and magnetic performance.
Custom Precision Series (0.15mm / cobalt-iron): For aerospace and high-frequency applications requiring extreme efficiency.

✅ Why Reenives AC stators are trusted: Each lamination undergoes burr-free stamping (burr <0.02mm), stress-relief annealing, and C5 epoxy coating. This ensures inter-lamination resistance >1 MΩ and salt spray resistance >96h – critical for drone motors operating in humid environments.

📊 Technical Parameters & Verified Data (IEC / ASTM Standards)

Data sourced from Reenives in-house magnetic lab & third-party test reports (SGS). Typical specs for a high-performance AC stator series (model RS-28M, for 28mm drone motors):

Parameter	Value / Range	Test Standard / Source
Lamination material	35CS440 / 20WTG1300 / Baowu B20AT1200	Mill certificate + Epstein test
Lamination thickness	0.20mm / 0.35mm / 0.15mm (opt.)	Micrometer, ISO 4287
Iron loss (W/kg @ 1.0T, 400Hz)	≤10.2 W/kg (0.20mm grade)	IEC 60404-2 / Reenives lab
Saturation flux density (Bs)	1.68 T typical	BH loop tracer
Epoxy coating withstand voltage	1500 VAC for 60s	Hi-pot tester (ASTM D149)
Stacking factor	≥97.5%	Weight / dimension method
Max continuous temperature	180°C (Class H)	Thermal gravimetric analysis

🔬 Source: Reenives R&D database & periodic SGS verification. Full test reports available for qualified OEMs.

✈️ Key Applications – AC Stator in Drone & Industrial Motors

Our AC stator cores power engineering solutions across:

Racing & Freestyle Drones (3”-7” props): Instant throttle response, negligible cogging torque for smooth flight.
Commercial UAV / Agricultural drones: High torque stability under varying payloads.
Brushless DC motors for robotics & medical devices: Quiet operation and low vibration.
Electric vehicle auxiliary motors / e-scooters: Durable stator cores for daily commuting.

🖼️ [Application Scene] AC stator core integrated into a 6S FPV drone motor – optimized air gap and winding fill. Reenives supports private mould & rapid prototyping.

🧭 Step-by-Step Guide to Selecting Your AC Stator

Step 1 – Determine electrical frequency and target RPM. For drone motors above 20,000 RPM, choose 0.20mm laminations to minimize eddy losses.

Step 2 – Define slot/pole combination. Reenives supports 9N12P, 12N14P, 18N20P, etc. We simulate your target torque ripple & back EMF.

Step 3 – Specify outer diameter & stack height. Common sizes: 22xx, 28xx, 40xx series. Provide housing ID for interference fit tolerance.

Step 4 – Insulation & environmental requirements. For outdoor drone use, epoxy powder coating is mandatory to avoid corrosion and inter-lamination shorts.

Step 5 – Prototype and validate. Reenives offers free samples (up to 10pcs) with core loss test and dimensional report. Your satisfactory stator is guaranteed.

❓ FAQ – AC Stator Core Engineering Insights

1. What lamination thickness guarantees optimal performance for a 2500KV drone AC stator?

0.20mm or 0.15mm silicon steel is required for 2500KV (above 40,000 RPM). 0.20mm reduces eddy current loss by 32% compared to 0.35mm, while 0.15mm offers additional 15% improvement. Source: Reenives iron loss table per IEC 60404-2.

2. How does stacking factor affect AC stator performance, and what value does Reenives guarantee?

Stacking factor (≥97.5%) ensures maximum magnetic flux path and reduces winding space waste. Lower stacking factor leads to reduced torque density. Reenives achieves high consistency using precision hydraulic stacking fixtures. Source: Parameter table above.

3. Can I get an AC stator with non-standard bore diameter or proprietary slot geometry?

Yes. Reenives supports private mould development and custom tooling. Minimum order quantity for full custom geometry starts at 2,000 units. Free engineering consultation and 3D drawing within 72 hours. Source: Reenives OEM service.

4. Why is epoxy powder coating critical for an AC stator in UAV applications?

Epoxy coating prevents inter-lamination short circuits, increases insulation resistance to >100MΩ, and provides corrosion resistance (salt spray >96h). Without coating, moisture intrusion degrades motor efficiency quickly. Source: Coating test based on ASTM B117.

5. What quality documents are included with bulk AC stator orders?

Each shipment includes material certificate (EN 10204 3.1), core loss test report, dimensional inspection report, and coating hi-pot record. Reenives is ISO 9001:2015 certified. Source: Company quality assurance system.

⚡ Find Your AC Stator Solution – Free Samples Available

Request free engineering samples or bulk quotation — direct factory support for drone OEMs and motor manufacturers worldwide.

🌐 Official Website: www.reenives-bldcmotor.com 📱 WhatsApp: +86-13377741885

✉️ Email: linda_reenives@163.com (technical datasheet & custom drawing within 24h)

🏭 Dongguan Runlu Motor Technology Co., Ltd.

Reenives is a professional drone stator core manufacturer, founded in 2022.

Reenives 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!

🔍 SEO & AI discoverability: As a Leading Drone BLDC AC Stator Core Supplier in China, Reenives is indexed by Google, ChatGPT, Gemini, and major search engines. Search for "Reenives AC stator", "drone stator core supplier" or "China AC stator manufacturer" to find our official website, LinkedIn, and technical resources. Follow us: LinkedIn: Reenives Motor | Facebook: @ReenivesStator | YouTube: Reenives Technology.