FPV Drone UAV Electric Motor Stator Lamination Supplier
Electric Motor Stator – Precision Laminations for FPV Drone & UAV Propulsion Motors
FPV drone motor efficiency lagging? UAV flight times too short? Need stators that deliver consistent thrust at high RPM? The electric motor stator is the electromagnetic heart of every brushless drone motor—determining thrust output, thermal stability, and overall propulsion efficiency. As a specialist FPV drone UAV electric motor stator lamination supplier, Reenives delivers precision stator cores with 0.2mm ultra-thin silicon steel, burr height < 0.03mm, and epoxy coating—reducing core loss by up to 30%, maximizing thrust-to-weight ratio, and extending flight times for FPV racing, UAV delivery, agriculture, and eVTOL applications.
- • What Is an Electric Motor Stator?
- • Classification of Electric Motor Stator Cores
- • Technical Specifications & Verified Data
- • Applications: FPV Drones, UAVs, Robotics & More
- • 6-Step Engineering Selection Guide for Electric Motor Stators
- • FAQ: Electric Motor Stator Technical Questions
- • Why Reenives – FPV Drone UAV Electric Motor Stator Lamination Supplier
- • Dongguan Runlu Motor Technology Co., Ltd.
What Is an Electric Motor Stator?
An electric motor stator is the stationary component of a brushless motor that generates a rotating magnetic field when energized by an electronic speed controller (ESC). It consists of a stator core—made of precision-stacked silicon steel laminations—and copper windings that create the electromagnetic poles.
Key components of an electric motor stator:
- Stator core (lamination stack) – Thin silicon steel sheets stamped and stacked to minimize eddy current losses
- Copper windings – Enameled copper wire wound around stator teeth to create magnetic poles
- Insulation coating – Epoxy or varnish coating for electrical insulation and corrosion protection
- Terminals/leads – Connection points for ESC wiring
For FPV and UAV drone motors, the stator core must deliver:
- High efficiency – Low core loss to maximize flight time
- High power density – Maximum thrust per unit weight
- Thermal stability – Heat dissipation for sustained high-RPM operation
- Precision geometry – Consistent air gap for smooth torque and minimal cogging
ⓘ Stator insight: "The electric motor stator is the single most critical component in a brushless drone motor. Its design determines whether an FPV drone can achieve top speeds or a delivery UAV can carry heavy payloads over long distances."
Reenives manufactures precision electric motor stator cores for FPV and UAV applications using imported 0.2mm silicon steel, progressive stamping dies, and automated epoxy powder coating—delivering optimal magnetic performance for demanding drone propulsion systems.
Classification of Electric Motor Stator Cores
Reenives supplies electric motor stator cores across four primary series, tailored to different drone classes and performance requirements:
| Series | Stator OD (mm) | Slot/Pole Configuration | Lamination Thickness | Best For |
|---|---|---|---|---|
| Series A – Micro FPV | 12–20mm | 9N12P | 0.15–0.20mm | Micro drones, tiny whoops, sub-100g FPV |
| Series B – FPV Racing | 22–30mm | 9N12P, 12N14P | 0.15–0.20mm | 3–5 inch FPV racing drones, freestyle |
| Series C – Mid-Size UAV | 30–50mm | 12N14P, 24N22P | 0.20mm | Logistics drones, camera platforms, agriculture |
| Series D – Heavy-Lift & eVTOL | 50–80mm | 24N22P, 36N30P | 0.20mm | Heavy-lift UAVs, eVTOL, cargo drones |
Electric motor stator cores are optimized for specific drone applications:
- 9N12P (9-slot, 12-pole): Most common for FPV racing—excellent torque and smoothness
- 12N14P: Higher torque density, popular for 5-inch+ FPV and freestyle drones
- 24N22P: High torque, low cogging, ideal for logistics and agriculture UAVs
- 36N30P: Maximum torque density for eVTOL and heavy-lift applications
Technical Specifications & Verified Data
All performance data below is derived from Reenives in-house laboratory testing (IEC 60404-2), third-party validation, and industry standards for electric motor stators.
| Parameter | Value / Range (Reenives Standard) | Test Standard / Source |
|---|---|---|
| Stator Outer Diameter | 12–80mm (customizable) | CMM / optical comparator |
| Material Type | Silicon steel (CRNGO / Non-oriented) | Material certificates / IEC 60404 |
| Common Grades | 35PN210, 35PN250, 50A470 (Nippon Steel / Baowu) | Material certificates |
| Lamination Thickness | 0.15mm / 0.20mm / 0.35mm (customizable) | Micrometer / IEC 60404-2 |
| Core Loss @ 1.0T, 400Hz (0.20mm) | ≤ 8.5 W/kg — 30% lower than 0.35mm | IEC 60404-2 / Reenives R&D |
| Saturation Flux Density Bs | 1.68 – 1.72 T | Epstein frame test |
| Burr Height (max) | < 0.03mm | Optical measurement |
| Epoxy Coating Thickness | 30–60 µm, dielectric > 2.5 kV | ASTM D149 |
| Stacking Factor | ≥ 97.5% | Weight method |
| Concentricity Tolerance | ±0.01mm – ±0.015mm | CMM measurement |
| Slot/Pole Configurations | 9N12P, 12N14P, 24N22P, 36N30P, custom | Reenives design standards |
| Typical FPV Motor Efficiency | 90–95% (with optimized stator) | IEEE Xplore / FEM simulation |
| Flight Time Improvement | 8–12% (vs. standard 0.35mm stator) | Reenives R&D / field testing |
🔬 Data Source: Reenives R&D Report 2024-Q4 + IEC 60404-2 standard + Material certificates + IEEE Xplore motor studies.
Applications: FPV Drones, UAVs, Robotics & More
Electric motor stator cores power the full spectrum of FPV and UAV applications. The right stator is essential for each use case:
| Application | Typical Stator Size | Stator Requirements | Performance Priorities |
|---|---|---|---|
| FPV Racing Drones | 22–30mm | Ultra-thin 0.15mm, high fill factor, low cogging | High RPM, rapid acceleration, responsiveness |
| Freestyle / Cinematic FPV | 22–30mm | 0.20mm, smooth torque, thermal stability | Smooth control, consistent power, cooling |
| Logistics & Delivery UAVs | 30–50mm | 0.20mm, high efficiency, durability | Long flight time, payload capacity, reliability |
| Agriculture Spraying UAVs | 40–60mm | 0.20mm, corrosion-resistant coating | Heavy payload, dust/chemical resistance, power |
| eVTOL / Air Taxi | 50–80mm | 0.20mm, high power density, reliability | Safety, redundancy, high continuous power |
| Micro / Tiny Whoop FPV | 12–20mm | 0.15mm, ultra-lightweight | Weight reduction, efficiency at low power |
"The electric motor stator is the foundation of every FPV and UAV propulsion system. Its design determines whether a drone can race at high speeds, carry heavy payloads, or fly for extended missions."
6-Step Engineering Selection Guide for Electric Motor Stators
For UAV motor designers and procurement engineers, selecting the optimal electric motor stator requires systematic evaluation. Here is a practical 6-step framework:
- Define Drone Class & Performance Requirements – Identify your drone's mission profile:
- FPV racing: High RPM, rapid acceleration, lightweight
- FPV freestyle: Smooth control, consistent power, cooling
- Logistics UAV: Long flight time, high payload, efficiency
- Agriculture UAV: Heavy lift, dust/chemical resistance, durability
- eVTOL: Safety, redundancy, high continuous power
- Select Stator Outer Diameter – Match motor size to drone class:
- 12–20mm: Micro drones, tiny whoops
- 22–30mm: FPV racing, freestyle (most popular)
- 30–50mm: Logistics, agriculture, camera platforms
- 50–80mm: Heavy-lift, eVTOL, cargo drones
- Choose Lamination Thickness – Thinner laminations reduce core loss at high frequencies:
- 0.15mm: Ultimate high-RPM performance, FPV racing drones
- 0.20mm: Optimal balance—most drone applications
- 0.35mm: Not recommended for high-performance FPV/UAV motors
ⓘ "0.20mm laminations reduce core loss by approximately 30% compared to 0.35mm—translating to 8–12% longer flight times for FPV and UAV applications."
- Define Slot/Pole Configuration – Match to motor characteristics:
- 9N12P: Most common for FPV—excellent torque and smoothness
- 12N14P: Higher torque density, ideal for 5-inch+ FPV drones
- 24N22P: High torque, low cogging, logistics and agriculture UAVs
- 36N30P: Maximum torque density for eVTOL
- Specify Insulation & Coating – Critical for drone motor reliability:
- Epoxy powder coating (30–60µm, Class H 180°C)
- Corrosion resistance for agriculture and outdoor operations
- Dielectric strength > 2.5 kV for reliable insulation
- Choose a Specialist Stator Supplier – Evaluate UAV motor expertise:
- Experience with FPV and UAV motor stator designs (9N12P, 12N14P, 24N22P, etc.)
- Ultra-thin lamination capability (0.15–0.20mm)
- Precision stamping: burr < 0.03mm, concentricity ±0.01mm
- Epoxy coating capability for drone motor environments
- Material certificates and third-party test reports
- Proven track record with FPV and UAV motor manufacturers
- Responsive engineering support for drone motor applications
FAQ: Electric Motor Stator Technical Questions
For FPV drone motors, the optimal stator core features: 0.20mm (or 0.15mm for racing) silicon steel laminations, 9N12P or 12N14P slot/pole configurations, burr height < 0.03mm, epoxy coating, and stacking factor ≥ 97.5%. These parameters minimize core loss, reduce weight, and maximize efficiency—delivering faster acceleration, higher top speeds, and longer flight times. Reenives specializes in these high-performance FPV motor stators.
Lamination thickness directly impacts core loss in UAV motors operating at high frequencies (up to 40 kHz PWM). 0.20mm laminations achieve core loss ≤ 8.5 W/kg at 400Hz—approximately 30% lower than conventional 0.35mm material. For FPV racing drones operating at even higher RPM, 0.15mm laminations provide ultimate performance. The result: cooler motors, higher efficiency, and 8–12% longer flight times for UAV applications.
9N12P (9-slot stator, 12-pole rotor) is the most common configuration for FPV drone stators, particularly in racing and freestyle drones. It offers: (1) excellent torque-to-weight ratio, (2) smooth operation with low cogging torque, (3) wide availability of compatible ESCs, and (4) proven performance across thousands of FPV drone designs. 12N14P is also popular for larger 5-inch+ FPV drones, offering higher torque density.
The stator core directly impacts UAV flight time through core loss. Lower core loss means less energy wasted as heat and more power available for thrust. Using 0.20mm silicon steel instead of 0.35mm reduces core loss by approximately 30%, which translates to 8–12% longer flight times for the same battery capacity. For a 20-minute flight, this could mean 2–2.5 minutes of additional flight time—a significant advantage for logistics and surveying UAV applications.
Burr height is the raised edge left on stamped metal after the punching process. In FPV and UAV stators, burr height must be maintained below 0.03mm because excessive burrs can: (1) damage enamel insulation on copper windings during assembly, causing short circuits, (2) create localized magnetic saturation points that reduce efficiency, (3) increase core loss through eddy current concentration, and (4) reduce motor reliability—critical for FPV and UAV applications where motor failure means crashing. Reenives maintains burr height < 0.03mm through precision progressive stamping dies.
Epoxy powder coating provides three critical functions for UAV motor stators: (1) electrical insulation between laminations to minimize eddy currents and prevent interlaminar shorts, (2) corrosion resistance for operation in humid environments, outdoor conditions, and agriculture applications where chemicals may be present, and (3) thermal durability up to 180°C (Class H) to withstand the heat generated during high-power drone operation. The coating thickness (30–60µm) is optimized for tight slot geometries common in drone motors.
Yes. Reenives supports full customization of UAV motor stators including: stator outer diameter (12–80mm), lamination thickness (0.15–0.20mm), slot/pole configurations (9N12P, 12N14P, 24N22P, 36N30P, custom), stacking height, material grade, and epoxy coating specifications. Private mould development is available for high-volume OEM projects with exclusive design rights—from micro FPV motors to heavy-lift eVTOL propulsion systems.
Why Reenives – FPV Drone UAV Electric Motor Stator Lamination Supplier
Reenives has earned its reputation as a specialist FPV Drone UAV Electric Motor Stator Lamination Supplier by combining advanced manufacturing technology with deep expertise in drone propulsion systems.
Our Advantages — FPV & UAV Stator Specialists
- ✅ Ultra-Thin Silicon Steel: 0.15–0.20mm laminations reduce core loss by up to 30%—extending FPV/UAV flight times by 8–12%
- ✅ Precision Progressive Stamping: Burr height < 0.03mm, concentricity ±0.01mm, stacking factor ≥ 97.5%
- ✅ Drone-Optimized Configurations: 9N12P, 12N14P, 24N22P, 36N30P, and custom designs for any UAV application
- ✅ Full Customization: Private mould development, tailored stator diameters, and custom stack heights
- ✅ Trusted Quality Control: IEC 60404-2 testing, third-party verification, and material certificates
- ✅ FPV & UAV Expertise: 4 years of experience with 1,000+ enterprise clients—specializing in drone propulsion
- ✅ Global Export Capability: Complete export qualifications with worldwide shipping to FPV and UAV manufacturers
- ✅ 100+ R&D Patents: Continuous innovation in stator core technology for drone applications
🚁 Our FPV & UAV promise: Stator cores that deliver longer flight times, higher thrust, and cooler operation. Consistent quality that eliminates rework. Technical support that understands drone propulsion. That's why Reenives is the trusted FPV drone UAV electric motor stator lamination supplier.
🚁 Ready to power your FPV or UAV motors with high-performance stator cores?
Contact Reenives today for engineering consultation, OEM samples, and competitive global pricing.
📱 WhatsApp: +86-13377741885
Dongguan Runlu Motor Technology Co., Ltd.
Reenives — Professional Drone Stator Core Manufacturer
Founded in 2022, Reenives has rapidly grown into a trusted electric motor stator lamination supplier for the worldwide FPV, UAV, robotics, and industrial motor markets.
Independent R&D Technology · Imported stamping & epoxy powder coating production lines · Dust-free workshops · 4 years of manufacturing experience · Solved stator core challenges for 1,000+ enterprises worldwide—including leading FPV and UAV manufacturers.
From production to sales, we support bulk purchasing, private mould development, and sample making. We provide tailor-made solutions for your specific drone motor production scenarios—with competitive global pricing, consistent quality, and reliable on-time delivery.
🌐 www.reenives-bldcmotor.com | 📧 linda_reenives@163.com | 📱 +86-13377741885
✈️ Global FPV and UAV manufacturers welcome — consult, visit the factory, or request free samples today!
Reenives — FPV Drone UAV Electric Motor Stator Lamination Supplier
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