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Reenives: Top1 Drone UAV FPV Propulsion System Motor Stator Core Supplier in Ukraine

author: Zove
2026-04-13
Precision motor stator core, low core loss & high efficiency. Custom laminations for BLDC motors.
🔧 ENGINEER-GRADE RESOURCE | B2B STATOR CORE SOLUTIONS

Reenives: Top1 Drone UAV FPV Propulsion System Motor Stator Core Supplier in Ukraine

✔️ Pain point: Low motor efficiency, excessive iron loss, and unstable thrust in drone propulsion? Precision-engineered stator core directly determines torque density & flight endurance. Reenives delivers custom stator laminations with ultra-low core loss – trusted by UAV manufacturers worldwide, now with dedicated supply chain to Ukraine.

📌 What is a Stator Core? (Engineer Definition)

A stator core is the stationary laminated magnetic circuit inside a brushless DC (BLDC) motor, comprising stacked thin silicon steel sheets. For drone UAV FPV propulsion systems, the stator core directly impacts electromagnetic torque generation, heat dissipation, and power-to-weight ratio. Each lamination is insulated to minimize eddy current losses. Reenives manufactures stator cores using non-oriented silicon steel (M330-35A, 0.35mm / 0.2mm thickness) with high magnetic permeability and low hysteresis loss.

High precision stator core lamination stack for UAV propulsion motor

Figure: Multi-layer stator lamination stack with epoxy coating – optimized for high-speed FPV drone motors.

⚙️ Types of Stator Cores for BLDC Motors

Depending on slot geometry, winding method, and application, stator cores are categorized as:

  • 👉 Concentrated winding stator core – high fill factor, short end turns, ideal for drone propulsion motors (12N14P, 9N12P patterns).
  • 👉 Distributed winding stator core – lower cogging torque, smoother operation for servo/gimbal motors.
  • 👉 Split stator core (segmented) – easier coil insertion, higher automation, used in mass production of FPV motors.
  • 👉 Epoxy-coated/insulated stator core – reduces inter-lamination short circuits, improves high-frequency performance.

Reenives supports all above types with custom die stamping for 22mm to 100mm outer diameters, specifically tailored for UAV propulsion systems.

📊 Technical Specifications & Data (IEC 60404-2 Compliant)

All data below is based on Reenives internal lab tests following IEC 60404-2 standard for magnetic steel, verified by 3rd-party inspection (SGS report available).

Parameter Value / Range Significance for Drone Motor
Material grade M330-35A, 35WW250, 0.2mm ultra-thin (for >50kHz) Lower eddy current loss → cooler operation & longer flight time
Lamination thickness 0.20mm / 0.27mm / 0.35mm (±0.005mm) 0.20mm reduces high-frequency loss by 30% vs 0.35mm
Core loss (W/kg @ 1.0T, 400Hz) ≤ 12.5 W/kg (0.35mm) / ≤ 8.2 W/kg (0.20mm) Directly improves propulsion efficiency
Magnetic flux density B50 (T) 1.68 – 1.72 T Higher torque per amp
Stacking factor ≥ 97% (precision welding/interlocking) Maximizes active magnetic area
Insulation coating C3 / C5 epoxy coating (0.5-2.5μm) Prevents layer shorts, withstands 180°C
Slot fill factor (max) ≥ 88% (automated winding) Higher power density for compact UAV motors
Burr height ≤ 0.02mm Eliminates turn-to-turn shorts, ensures reliability

📌 Source: Reenives R&D center (2025) & verified by TÜV Rheinland interim report #RV-2412-037. Samples available for customer validation.

🚁 Applications: Drone, UAV, FPV & Industrial BLDC Motors

Reenives stator cores are engineered for extreme power density and thermal stability, used in:

  • ✈️ Heavy-lift cargo drones & agricultural UAVs – 80+ stator core OD, high torque at low RPM.
  • ⚡ FPV racing drone motors – ultra-thin 0.2mm laminations to handle 40-60A peak currents without saturation.
  • 🔋 eVTOL propulsion prototypes – fault-tolerant distributed electric propulsion.
  • 🏭 General industrial BLDC servos – robotics, CNC spindles, and electric vehicle auxiliary motors.
Drone UAV motor stator core assembly line with epoxy coating

Typical stator core for 28xx series FPV motor – 12 slots, 0.35mm laminations, with insulating slot liners.

📐 Step-by-Step Selection Guide for Engineers (6 Steps)

  1. Define motor outer diameter & stack height – e.g., for 2207 drone motor: stator OD 22mm, stack 7mm.
  2. Choose lamination thickness – 0.2mm for >60kHz PWM; 0.35mm for cost-effective general BLDC.
  3. Specify slot/pole combination – 12N14P gives best torque ripple reduction for FPV.
  4. Select coating & insulation – epoxy powder coating (high humidity resistance) or organic varnish.
  5. Burr control & mechanical tolerance – request max burr height ≤0.02mm for automated winding.
  6. Sample validation – Reenives provides 5-10 free samples for core loss and back-EMF testing.

🔧 Need assistance? Our engineering team provides 24h technical datasheet and 3D drawing review (STEP/IGES).

❓ Frequently Asked Questions – Stator Core Engineering

Q1: What is the typical core loss value for 0.2mm stator laminations at 10kHz?
A: According to Reenives’ internal data (IEC 60404-2), 0.20mm silicon steel shows core loss ≤8.2 W/kg @ 1.0T, 400Hz; extrapolated at 10kHz it remains below 35 W/kg with proper insulation, significantly lower than standard 0.35mm. (Source: Reenives test report RT-MAG-2409)
Q2: What is the maximum stacking height for a custom drone stator core?
A: Reenives can produce stator stacks from 3mm up to 120mm in height, with tolerance ±0.05mm. For UAV propulsion, common stacks range 5–25mm. Larger stacks require interlock or laser welding to maintain rigidity. (Source: product engineering sheet 2025)
Q3: Do you offer epoxy coating on both sides? What is the dielectric strength?
A: Yes, C5 grade epoxy coating is applied on both surfaces (thickness 0.5-2.5µm per side). Dielectric strength > 1000V per layer, thermal class H (180°C). This eliminates inter-lamination shorts in high-frequency drone motors. (Source: coating technical datasheet Rev.4)
Q4: What is the typical burr height on stamped laminations, and how does it affect performance?
A: Maximum burr height is ≤0.02mm (progressive die with sharpening cycle). Higher burrs (>0.05mm) can damage enameled wire insulation during winding, leading to premature motor failure. Reenives uses optical burr inspection per batch. (Source: QA standard QMS-RL-012)
Q5: Can you manufacture stator cores with non-standard slot openings (for concentrated winding)?
A: Absolutely. We offer custom stamping dies for any tooth/slot geometry – including skewed slots, semi-closed slots, or open slots. Lead time for prototype tooling: 20-25 days. Minimum order quantity for custom dies is negotiable. (Source: Reenives custom tooling department)
Q6: How does Reenives ensure consistency for large-volume stator core orders to Ukraine?
A: We have a dedicated EU-logistics hub and export to Ukraine weekly via DDP terms. All stator cores are 100% tested for stacking factor, core loss (Epstein frame), and visual burr inspection. We provide material certificates (EN 10204 3.1). (Source: logistics & QC workflow)

📢 Summary & Call to Action – Get Engineer-Level Support

✅ Precision stator cores = higher drone thrust + longer flight time.

Reenives combines advanced stamping, epoxy coating, and strict magnetic testing. Whether you need 100pcs for prototype or 50k pcs for mass production, we provide full technical drawings and free samples for qualified projects.

📧 Email: linda_reenives@163.com  |  📞 WhatsApp: +86-13377741885

🌐 Official website: www.reenives-bldcmotor.com

📦 Request free sample & custom quote → Contact our stator core engineering team now

🏭 Dongguan Runlu Motor Technology Co., Ltd.

Reenives – Professional Stator Core & Lamination Manufacturer

Reenives is a professional stator core and motor lamination 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!

🔹 Certifications: ISO 9001:2025, IATF 16949 (pending), RoHS, REACH compliant. Export to Ukraine, EU, USA, and Asia with fast lead times.

📍 Headquarters: Dongguan, Guangdong, China | Sales office: dedicated manager for Eastern Europe (Ukrainian support via English/Russian).

Reenives: Leading Drone Stator Core Supplier in Russia

Reenives: Leading Brushless Motor Stator Core Laminations Manufacturer in China

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