Outrunner Motor Stator Electrical Steel Laminations Supplier in India
Electrical Steel Laminations – High-Torque Stator Cores for Outrunner Motors
Outrunner motor performance limited by stator lamination quality? Need a reliable electrical steel laminations supplier for India? Electrical steel laminations are the precision-stamped silicon steel cores that form the stator and rotor of every outrunner motor—the essential magnetic circuits that determine torque density, efficiency, and thermal stability. As a specialist outrunner motor stator electrical steel laminations supplier in India and globally, Reenives delivers precision laminations with 0.2mm ultra-thin silicon steel, 12N14P or 24N22P configurations, burr height < 0.03mm, and epoxy coating—reducing core loss by up to 30%, maximizing torque density, and enabling reliable propulsion for drone, UAV, and eVTOL applications .
- • What Are Electrical Steel Laminations?
- • Classification of Outrunner Stator Laminations
- • Technical Specifications & Verified Data
- • Applications: Drones, UAVs, eVTOL & More
- • 6-Step Engineering Selection Guide for Stator Laminations
- • FAQ: Electrical Steel Lamination Technical Questions
- • Why Reenives – Outrunner Motor Stator Electrical Steel Laminations Supplier in India
- • Dongguan Runlu Motor Technology Co., Ltd.
What Are Electrical Steel Laminations?
Electrical steel laminations are thin, precision-stamped sheets of silicon steel that form the magnetic cores of electric motors, generators, and transformers. For outrunner motors, these laminations are stacked and bonded to create the stator core—the stationary magnetic circuit that generates the rotating magnetic field .
Why electrical steel laminations are critical for outrunner motor performance:
- Eddy current reduction – Thin laminations (0.15–0.20mm) restrict eddy current flow, minimizing core loss
- Precision geometry – Stamping ensures consistent slot/pole shapes for optimal magnetic flux
- Burr-free edges – Quality stamping (burr < 0.03mm) protects winding insulation
- High stacking factor – Precision stamping enables ≥ 97% stacking density
- Material optimization – Silicon steel increases electrical resistance and magnetic permeability
Electrical steel laminations are typically made from non-oriented silicon steel (CRNGO), which offers isotropic magnetic properties—consistent performance in all directions, making it ideal for rotating machines like outrunner motors . The addition of silicon increases electrical resistivity and magnetic permeability, reducing core loss and improving motor efficiency.
ⓘ Lamination insight: "Electrical steel laminations are the foundation of every outrunner motor. A 10% reduction in core loss through precision laminations can increase motor efficiency by 5–8%."
Reenives manufactures precision electrical steel laminations for outrunner motors using imported 0.2mm silicon steel, progressive stamping dies, and automated epoxy powder coating—delivering optimal magnetic performance for demanding drone, UAV, and eVTOL applications .
Classification of Outrunner Stator Laminations
Reenives supplies outrunner stator laminations across four primary series, tailored to different power classes and applications:
| Series | Power Range | Stator OD (mm) | Slot/Pole Configuration | Lamination Thickness | Best For |
|---|---|---|---|---|---|
| Series A – Micro Outrunner | <500W | 12–22mm | 9N12P | 0.15–0.20mm | Micro drones, tiny whoops |
| Series B – FPV / Racing | 500W–3kW | 22–30mm | 9N12P, 12N14P | 0.15–0.20mm | FPV racing, freestyle drones |
| Series C – Mid-Power UAV | 3–15kW | 30–60mm | 12N14P, 24N22P | 0.20mm | Logistics, agriculture, camera drones |
| Series D – High-Power / eVTOL | 15–50+ kW | 60–200mm | 24N22P, 36N30P, 48N40P | 0.20mm | Heavy-lift, eVTOL, electric aviation |
Outrunner stator laminations are characterized by:
- Large diameter – Up to 200mm to accommodate high torque requirements
- Multi-pole configurations – 9N12P, 12N14P, 24N22P, 36N30P for smooth torque
- Thin laminations – 0.15–0.20mm to minimize core loss at high frequencies
- High stacking factor – ≥ 97% for maximum magnetic material density
Technical Specifications & Verified Data
All performance data below is derived from Reenives in-house laboratory testing (IEC 60404-2), third-party validation, and peer-reviewed outrunner motor research .
| Parameter | Value / Range (Reenives Standard) | Test Standard / Source |
|---|---|---|
| Stator Outer Diameter | 12–200mm (customizable) | CMM / optical comparator |
| Material Type | Non-grain oriented silicon steel (CRNGO) | Material certificates / IEC 60404 |
| Common Grades | 35PN210, 35PN250 (Nippon Steel / Baowu) | Material certificates |
| Lamination Thickness | 0.15mm / 0.20mm / 0.27mm / 0.35mm | 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% | Weight method |
| Concentricity Tolerance | ±0.01mm – ±0.015mm | CMM measurement |
| Slot/Pole Configurations | 9N12P, 12N14P, 24N22P, 36N30P, custom | Reenives design standards |
| Winding Factor (12N14P) | 0.933 (near-perfect) | BLDC winding theory |
| Typical Outrunner Efficiency | 90–95% (with optimized stator) | IEEE Xplore / FEM simulation |
| Torque Density Improvement | 15–25% (vs. standard 0.35mm stator) | Reenives R&D / thermal analysis |
🔬 Data Source: Reenives R&D Report 2024-Q4 + IEC 60404-2 standard + Material certificates + IEEE Xplore outrunner motor studies .
Applications: Drones, UAVs, eVTOL & More
Electrical steel laminations power a wide range of outrunner motor applications :
| Application | Power Range | Stator Requirements | Performance Priorities |
|---|---|---|---|
| FPV Racing Drones | 500W–3kW | 9N12P/12N14P, 0.15–0.20mm | High RPM, rapid acceleration, responsiveness |
| Logistics & Delivery Drones | 3–15kW | 24N22P, 0.20mm, high efficiency | Long flight time, payload capacity, reliability |
| Agriculture Spraying UAVs | 3–15kW | 24N22P, corrosion-resistant coating | Heavy payload, dust/chemical resistance, durability |
| eVTOL / Air Taxis | 15–50+ kW | 36N30P, 48N40P, 0.20mm | Safety, redundancy, high continuous power |
| Heavy-Lift Cargo Drones | 5–20kW | 24N22P, 36N30P | Maximum thrust, reliability, sustained power |
"Electrical steel laminations with precision stamping deliver exceptional torque density—enabling direct-drive propulsion without the complexity and losses of gearboxes."
6-Step Engineering Selection Guide for Stator Laminations
For motor designers and procurement engineers, selecting the optimal electrical steel laminations requires systematic evaluation. Here is a practical 6-step framework :
- Define Power & Torque Requirements – Identify your motor's performance targets:
- Continuous power: 500W, 5kW, 15kW, 50+ kW?
- Peak torque: How much overload capacity is needed?
- Operating RPM range: Low-speed high-torque or high-speed?
- Select Stator Outer Diameter – Match motor size to power class:
- 12–22mm: Micro outrunners (<500W)
- 22–30mm: FPV/racing (500W–3kW)
- 30–60mm: Mid-power UAV (3–15kW)
- 60–200mm: High-power/eVTOL (15–50+ kW)
- Choose Slot/Pole Configuration – Critical for torque and efficiency:
- 9N12P: Most common for FPV—excellent torque and smoothness
- 12N14P: Near-perfect winding factor (0.933)—most popular for UAV
- 24N22P: High torque, low cogging, heavy-lift applications
- 36N30P: Maximum torque density for eVTOL
- 48N40P: Ultra-smooth, extreme power applications
- Specify Lamination Thickness – Thinner laminations reduce core loss at high frequencies:
- 0.15mm: Ultimate high-RPM performance, racing outrunners
- 0.20mm: Optimal balance—most outrunner applications
- 0.35mm: Not recommended for high-performance outrunner motors
ⓘ "0.20mm laminations reduce core loss by approximately 30% compared to 0.35mm—enabling 15–25% higher torque density."
- Verify Thermal & Structural Requirements – Outrunner motors demand:
- High stacking factor (≥ 97%) for maximum magnetic material
- Epoxy coating (30–60µm, Class H 180°C) for thermal durability
- Strong interlock or welding for structural integrity
- Precision concentricity (≤ ±0.01mm) for consistent air gap
- Choose a Leading Stator Lamination Supplier – Evaluate expertise:
- Experience with outrunner motor stator designs (9N12P, 12N14P, 24N22P, etc.)
- Ultra-thin lamination capability (0.15–0.20mm)
- Large diameter capability (up to 200mm)
- Precision stamping: burr < 0.03mm, concentricity ±0.01mm
- Epoxy coating for outrunner thermal environments
- Material certificates and third-party test reports
- Proven track record with outrunner motor manufacturers
- Reliable supply chain with shipping to India and worldwide
- Engineering support for outrunner motor optimization
FAQ: Electrical Steel Lamination Technical Questions
Electrical steel laminations are thin, precision-stamped sheets of silicon steel that form the magnetic cores of electric motors. For outrunner motors, these laminations are stacked and bonded to create the stator core—the stationary magnetic circuit that generates the rotating magnetic field. Laminations are used because they minimize eddy current losses: thin laminations (0.15–0.20mm) restrict eddy current flow, while the silicon content increases electrical resistance and magnetic permeability . This reduces core loss and improves motor efficiency.
For outrunner motors, 0.15–0.20mm laminations are optimal. 0.20mm achieves core loss ≤ 8.5 W/kg at 400Hz—approximately 30% lower than 0.35mm material. For FPV racing outrunners operating at extreme RPM, 0.15mm laminations provide ultimate performance . The thinner the lamination, the lower the eddy current losses, but manufacturing cost and handling considerations increase with thinner materials.
For outrunner motors, the optimal slot/pole configuration depends on the application: (1) 9N12P is most common for FPV and racing outrunners—excellent torque and smoothness, (2) 12N14P offers near-perfect winding factor (0.933) and is most popular for UAV applications, (3) 24N22P provides high torque with low cogging for heavy-lift and logistics drones, (4) 36N30P delivers maximum torque density for eVTOL applications. Reenives supports all these configurations with custom tooling.
Epoxy powder coating provides three critical functions for electrical steel laminations: (1) electrical insulation between laminations to minimize eddy currents and prevent interlaminar shorts—critical for high-current operation, (2) thermal durability up to 180°C (Class H) to withstand the heat generated during sustained high-torque operation, and (3) corrosion resistance for outdoor UAV and marine applications . The coating thickness (30–60µm) is optimized with dielectric strength exceeding 2.5 kV .
CRGO (Cold-Rolled Grain Oriented) steel has anisotropic properties—maximum magnetic performance in one direction only, making it ideal for transformers where flux flows in a single direction. CRNO (Cold-Rolled Non-Oriented) steel has isotropic magnetic properties—consistent performance in all directions, making it ideal for rotating machines like outrunner motors where magnetic flux changes direction continuously . For outrunner motors, CRNO electrical steel laminations are the standard choice .
Yes. Reenives supports full customization of electrical steel laminations including: stator outer diameter (12–200mm), lamination thickness (0.15–0.20mm), slot/pole configurations (9N12P, 12N14P, 24N22P, 36N30P, 48N40P, 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 racing outrunners to large eVTOL propulsion systems.
Why Reenives – Outrunner Motor Stator Electrical Steel Laminations Supplier in India
Reenives has earned its reputation as a specialist outrunner motor stator electrical steel laminations supplier in India and globally by combining advanced manufacturing technology with deep expertise in outrunner motor design and a reliable global supply chain .
Our Advantages — Outrunner Lamination Specialists
- ✅ Ultra-Thin Silicon Steel: 0.15–0.20mm laminations reduce core loss by up to 30%—enabling 15–25% higher torque density
- ✅ Large Diameter Capability: Stator OD up to 200mm for high-power outrunner motors
- ✅ Multi-Pole Expertise: 9N12P, 12N14P, 24N22P, 36N30P, 48N40P, and custom configurations
- ✅ Precision Stamping: Burr height < 0.03mm, concentricity ±0.01mm, stacking factor ≥ 97%
- ✅ Epoxy Coating: 30–60µm, Class H 180°C, dielectric > 2.5 kV
- ✅ Full Customization: Private mould development for exclusive outrunner designs
- ✅ Trusted Quality Control: IEC 60404-2 testing, third-party verification, material certificates
- ✅ Global Export: Complete export qualifications with reliable shipping to India and worldwide
- ✅ Proven Track Record: 4 years experience, 1,000+ enterprise clients, 100+ R&D patents
🌏 Our laminations promise: Precision electrical steel laminations that maximize torque density and thermal limits. Consistent quality that eliminates rework. Engineering support that optimizes your outrunner motor design. Reliable global supply chain that delivers to India and worldwide. That's why Reenives is the trusted outrunner motor stator electrical steel laminations supplier in India .
⚡ Ready to power your outrunner motors with precision electrical steel laminations?
Contact Reenives today for engineering consultation, OEM samples, and competitive global pricing with reliable shipping to India.
📱 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 electrical steel laminations supplier for the global UAV, eVTOL, and industrial motor markets—serving clients in India and worldwide .
Independent R&D Technology · Imported stamping & epoxy powder coating production lines · Dust-free workshops · 4 years of manufacturing experience · Solved outrunner stator challenges for 1,000+ enterprises worldwide—including leading drone 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 outrunner motor production scenarios—with competitive global pricing, consistent quality, and reliable on-time delivery to India and beyond .
🌐 www.reenives-bldcmotor.com | 📧 linda_reenives@163.com | 📱 +86-13377741885
✈️ Global outrunner motor manufacturers welcome — consult, visit the factory, or request free samples today!
Reenives — Outrunner Motor Stator Electrical Steel Laminations Supplier in India
© 2026 Dongguan Runlu Motor Technology Co., Ltd. All rights reserved.
Reenives: Drone Motor Lamination Stamping Company
Leading BLDC Drone Motor Stator Core Supplier
Related Article
