Drone Brushless DC Machine Stator Lamination Supplier
DC Machine Stator – Precision Laminations for Drone Brushless DC Motors
Drone motor efficiency lagging? Stator lamination quality inconsistent? Flight times too short? The DC machine stator is the stationary magnetic core of every brushless DC motor—housed within the yoke, it carries the field windings that create the magnetic field essential for motor operation . As a specialist drone brushless DC machine stator lamination supplier, Reenives delivers precision stator laminations with 0.15–0.20mm ultra-thin silicon steel, 12N14P or 9N12P configurations, 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 logistics, agriculture, and eVTOL applications .
- • What Is a DC Machine Stator?
- • Classification of DC Machine Stator Laminations
- • Technical Specifications & Verified Data
- • Applications: FPV Racing, UAVs, eVTOL & More
- • 6-Step Engineering Selection Guide for DC Machine Stator Laminations
- • FAQ: DC Machine Stator Lamination Technical Questions
- • Why Reenives – Drone Brushless DC Machine Stator Lamination Supplier
- • Dongguan Runlu Motor Technology Co., Ltd.
What Is a DC Machine Stator?
A DC machine stator is the stationary component of a direct current machine that houses the field windings and provides the magnetic return path for the motor's operation . In brushless DC motors for drone applications, the stator is a laminated core—made from thin silicon steel sheets stacked and bonded—that minimizes eddy current losses while providing the magnetic circuit essential for electromagnetic energy conversion .
Key functions of a DC machine stator in drone motors:
- Magnetic field generation – The stator holds the field windings that create the rotating magnetic field
- Eddy current reduction – Laminated construction (0.15–0.20mm) minimizes energy loss and heat generation
- Mechanical support – Provides structural integrity and proper alignment for rotor components
- Thermal management – The stator core acts as a thermal path for heat dissipation
ⓘ DC machine insight: "The stator houses the field windings, which create a magnetic field when electrically energized. This magnetic field is essential for the operation of the machine, as it interacts with the armature winding on the rotor."
Reenives manufactures precision stator laminations for DC machines in drone applications using imported 0.15–0.20mm silicon steel, progressive stamping dies, and automated epoxy powder coating—delivering optimal magnetic performance for demanding UAV, FPV, and eVTOL applications .
Classification of DC Machine Stator Laminations
Reenives supplies DC machine stator laminations 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 | 0.15mm | 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, agriculture UAVs |
| Series D – Heavy-Lift & eVTOL | 50–80mm | 24N22P, 36N30P | 0.20mm | Heavy-lift UAVs, eVTOL, cargo drones |
DC machine stator laminations are optimized for specific drone applications:
- 9N12P: High RPM, low cogging—ideal for FPV racing
- 12N14P: Near-perfect winding factor (0.933)—most popular for UAV drones
- 24N22P: High torque, low cogging—logistics and agriculture UAVs
- 36N30P: Maximum torque density—eVTOL
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 DC machine stator laminations .
| 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, 20PN150, 50A470 | Material certificates |
| Lamination Thickness | 0.15mm / 0.20mm / 0.27mm / 0.35mm | Micrometer / IEC 60404-2 |
| Core Loss @ 1.0T, 400Hz (0.20mm) | ≤ 13.5 W/kg — 22% lower than standard | IEC 60404-10 / Reenives R&D |
| Saturation Flux Density B50 | 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% | Reenives in-house quality report |
| Concentricity Tolerance | ±0.01mm – ±0.015mm | CMM measurement |
| Operating Temperature | -40°C to +180°C (Class H) | Thermal aging test |
🔬 Data Source: Reenives R&D Report 2024-Q4 + IEC 60404-2 standard + Material certificates.
Applications: FPV Racing, UAVs, eVTOL & More
DC machine stator laminations power the full spectrum of drone applications :
| Application | Typical Stator Size | Stamping Requirements | Performance Priorities |
|---|---|---|---|
| FPV Racing Drones | 22–30mm | Ultra-thin 0.15mm, high fill factor | High RPM, rapid acceleration, responsiveness |
| Freestyle / Cinematic FPV | 22–30mm | 0.20mm, smooth torque, thermal stability | Smooth control, consistent power, cooling |
| UAV Logistics & Delivery | 30–50mm | 0.20mm, high efficiency, durability | Long flight time, payload capacity, reliability |
| UAV Agriculture Spraying | 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 stator houses the field windings, which create a magnetic field when electrically energized. This magnetic field is essential for the operation of the machine."
6-Step Engineering Selection Guide for DC Machine Stator Laminations
For drone motor designers and procurement engineers, selecting the optimal DC machine stator lamination 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
- UAV logistics: Long flight time, high payload, efficiency
- UAV agriculture: 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
- 0.20mm: Optimal balance—most drone applications
- 0.27mm: Standard efficiency, cost-effective
- 0.35mm: Not recommended for high-performance drone motors
ⓘ "0.20mm laminations achieve core loss ≤13.5 W/kg at 400Hz—approximately 22% lower than standard materials."
- Define Slot/Pole Configuration – Match to motor characteristics:
- 9N12P: High RPM, responsive—FPV racing
- 12N14P: Near-perfect winding factor—most popular for UAV
- 24N22P: High torque, low cogging—heavy-lift
- 36N30P: Maximum torque density—eVTOL
- Specify Insulation & Coating – Critical for DC machine reliability:
- Epoxy powder coating (30–60µm, Class H 180°C)
- Dielectric strength > 2.5 kV for reliable insulation
- Corrosion resistance for agriculture and outdoor operations
- Choose a Specialist DC Stator Supplier – Evaluate DC machine expertise:
- Experience with DC machine stator design for drone applications
- Ultra-thin lamination capability (0.15–0.27mm)
- Precision stamping: burr < 0.03mm, concentricity ±0.01mm
- Epoxy coating capability for DC machine environments
- IEC 60404-2 compliant quality control
- Proven track record with drone motor manufacturers
- Engineering support for DC motor optimization
FAQ: DC Machine Stator Lamination Technical Questions
A DC machine stator is the stationary component that houses the field windings and provides the magnetic return path for motor operation . For brushless drone motors, the stator is a laminated core made from thin silicon steel sheets that minimizes eddy current losses while providing the magnetic circuit essential for electromagnetic energy conversion . The stator is critical because: (1) it creates the rotating magnetic field that drives the rotor, (2) precision laminations minimize core loss, and (3) it provides mechanical support for other motor components .
For drone DC machine stators, 0.15–0.20mm laminations are optimal for high-frequency operation . 0.20mm achieves core loss ≤13.5 W/kg at 400Hz—approximately 22% lower than standard materials. For FPV racing drones operating at extreme RPM, 0.15mm laminations provide ultimate performance. 0.35mm is suitable for cost-sensitive industrial motors with lower operating frequencies .
12N14P (12-slot stator, 14-pole rotor) is the most common configuration for drone DC machine stators, offering a near-perfect winding factor of 0.933 and exceptionally low cogging torque . 9N12P is also popular for FPV racing, while 24N22P is preferred for heavy-lift and logistics UAVs .
Burr height is the raised edge left on stamped metal after the punching process. In DC machine 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. Reenives maintains burr height < 0.03mm through precision progressive stamping dies .
Epoxy powder coating provides three critical functions for DC machine stator laminations: (1) electrical insulation between laminations to minimize eddy currents and prevent interlaminar shorts, (2) thermal durability up to 180°C (Class H) to withstand heat generated during high-power operation , and (3) corrosion resistance for operation in humid environments, outdoor conditions, and agriculture applications. The coating thickness (30–60µm) is optimized with dielectric strength exceeding 2.5 kV .
Reenives uses high-grade silicon steel for DC machine stator laminations including: 35PN210 (premium grade for drone motors), 35PN250 (high-grade), 20PN150 (ultra-thin, high-frequency), and 50A470 (standard industrial grade) . These non-oriented (CRNGO) silicon steel grades offer magnetic saturation of 1.68–1.72 T and are sourced from Nippon Steel and Baowu with full material certificates .
Yes. Reenives supports full customization of DC machine stator laminations including: stator outer diameter (12–80mm), lamination thickness (0.15–0.35mm), 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 – Drone Brushless DC Machine Stator Lamination Supplier
Reenives has earned its reputation as a specialist Drone Brushless DC Machine Stator Lamination Supplier by combining advanced manufacturing technology with deep expertise in DC machine design and drone propulsion systems .
Our Advantages — DC Machine Stator Specialists
- ✅ Ultra-Thin Silicon Steel: 0.15–0.20mm laminations reduce core loss by up to 22%—extending drone flight times
- ✅ Precision Progressive Stamping: Burr height < 0.03mm, concentricity ±0.01mm, stacking factor ≥ 97%
- ✅ DC-Optimized Configurations: 9N12P, 12N14P, 24N22P, 36N30P—any drone 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
- ✅ DC Motor Expertise: 4 years of experience with 1,000+ enterprise clients—specializing in UAV propulsion
- ✅ Global Export Capability: Complete export qualifications with worldwide shipping to drone manufacturers
- ✅ 100+ R&D Patents: Continuous innovation in DC machine stator technology for drone applications
🚁 Our DC machine promise: Stator laminations that deliver longer flight times, higher thrust, and cooler operation. Consistent quality that eliminates rework. Technical support that understands DC motor design. That's why Reenives is the trusted drone brushless DC machine stator lamination supplier.
🚁 Ready to power your DC drone motors with precision stator laminations?
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 DC machine stator lamination supplier for the worldwide drone, UAV, FPV, and industrial motor markets .
Independent R&D Technology · Imported stamping & epoxy powder coating production lines · Dust-free workshops · 4 years of manufacturing experience · Solved DC machine stator challenges for 1,000+ enterprises worldwide—including leading drone manufacturers .
From production to sales, we support bulk purchasing, private mould development, and sample making. We provide tailor-made solutions for your specific DC 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 drone manufacturers welcome — consult, visit the factory, or request free samples today!
Reenives — Drone Brushless DC Machine Stator Lamination Supplier
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