Out-slot
Electric Motor Lamination – Precision Cores for Drone, UAV & Industrial Motors
Motor efficiency lagging? Hidden costs in your lamination supply chain? Need an honest partner you can trust?Electric motor laminations are the precision-stamped silicon steel sheets that form the stator and rotor cores of every electric motor—the essential magnetic circuits that determine efficiency, torque, and thermal performance. As an honest electric motor lamination supplier in China, 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 motor efficiency, and enabling reliable performance for drone, UAV, robotics, and industrial applications. No hidden fees. No material substitutions. Just honest quality and transparent pricing.
- •What Are Electric Motor Laminations?
- •Classification of Electric Motor Laminations
- •Technical Specifications & Verified Data
- •Applications: Drones, UAVs, Robotics, Industrial & More
- •6-Step Engineering Selection Guide for Motor Laminations
- •FAQ: Electric Motor Lamination Technical Questions
- •Why Reenives – Honest Electric Motor Lamination Supplier in China
- •Dongguan Runlu Motor Technology Co., Ltd.
What Are Electric Motor Laminations?
Electric motor laminations are precision-stamped thin sheets of electrical steel that form the stator and rotor cores of electric motors, generators, and alternators. These laminated cores are the essential magnetic circuits that enable electromagnetic energy conversion—converting electrical energy into mechanical motion in motors.
Why electric motor laminations are essential for 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 laminations enable ≥ 97.5% stacking density
- Material optimization – Silicon steel increases electrical resistance and magnetic permeability
ⓘ Honest lamination insight:"Honest lamination means what you order is what you get. Full material traceability. Third-verified performance data. No hidden substitutions. No hidden fees. That's the Reenives difference."
Reenives manufactures precision electric motor laminations using imported 0.2mm silicon steel, progressive stamping dies, and automated epoxy powder coating—delivering optimal magnetic performance for demanding drone, UAV, robotics, and industrial applications.
Classification of Electric Motor Laminations
Reenives supplies electric motor laminations across four primary series, tailored to different motor classes and performance requirements:
| Series | Stator OD (mm) | Slot/Pole Configuration | Lamination Thickness | Best For |
|---|---|---|---|---|
| Series A – Micro Motor | 12–20mm | 9N12P | 0.15mm | Micro drones, tiny whoops, sub-100g UAVs |
| 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, camera platforms |
| Series D – Heavy-Lift & Industrial | 50–80mm+ | 24N22P, 36N30P | 0.20mm | Heavy-lift UAVs, eVTOL, industrial motors |
Electric motor laminations are optimized for different motor sizes and power classes:
- 9N12P (9-slot, 12-pole): High RPM, responsive—ideal for FPV racing
- 12N14P: Near-perfect winding factor (0.933)—most popular for UAVs
- 24N22P: High torque, low cogging—heavy-lift and logistics
- 36N30P: Maximum torque density—eVTOL and industrial
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 laminations.
| Parameter | Value / Range (Reenives Standard) | Test Standard / Source |
|---|---|---|
| Stator Outer Diameter | 12–80mm+ (customizable) | CMM / optical comparator |
| Lamination Material | 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 | ≥ 97.5% | Weight method |
| Concentricity Tolerance | ±0.01mm – ±0.015mm | CMM measurement |
| Slot/Pole Configurations | 9N12P, 12N14P, 24N22P, 36N30P, custom | Reenives design standards |
| Typical Motor Efficiency | 90–95% (with optimized laminations) | IEEE Xplore / FEM simulation |
| Efficiency Improvement | 5–8% (vs. standard 0.35mm laminations) | Reenives R&D / field testing |
🔬Data Source: Reenives R&D Report 2024-Q4 + IEC 60404-2 standard + Material certificates + IEEE Xplore motor studies.
Applications: Drones, UAVs, Robotics, Industrial & More
Electric motor laminations power the full spectrum of electric motor applications:
| Application | Typical Stator Size | Lamination Requirements | Performance Priorities |
|---|---|---|---|
| FPV Racing Drones | 22–30mm | Ultra-thin 0.15mm, high fill factor, low cogging | High RPM, rapid acceleration, responsiveness |
| Freestyle / Cinematic | 22–30mm | 0.20mm, smooth torque, thermal stability | Smooth control, consistent power, cooling |
| Logistics & Delivery | 30–50mm | 0.20mm, high efficiency, durability | Long flight time, payload capacity, reliability |
| 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 |
| Robotics & Industrial Motors | 20–80mm | 0.20–0.35mm, precision laminations | Precision control, reliability, thermal stability |
"Precision electric motor laminations are the backbone of electric motor performance—from drone propulsion to industrial automation."
6-Step Engineering Selection Guide for Motor Laminations
For procurement engineers and motor designers, selecting the optimal electric motor laminations requires systematic evaluation. Here is a practical 6-step framework:
- Define Motor Class & Application – Identify your motor type:
- Drone motors: High RPM, lightweight, efficiency-focused
- UAV motors: Long flight time, payload capacity, reliability
- Robotics: Precision control, smooth torque, reliability
- Industrial: Reliability, thermal stability, cost-effective
- Select Stator Outer Diameter – Match motor size to power class:
- 12–20mm: Micro motors, tiny whoops
- 22–30mm: FPV racing, freestyle (most popular)
- 30–50mm: Logistics, agriculture, camera platforms
- 50–80mm: Heavy-lift, eVTOL, industrial
- Choose Lamination Thickness – Thinner laminations reduce core loss at high frequencies:
- 0.15mm: Ultimate high-RPM performance, racing motors
- 0.20mm: Optimal balance—most applications
- 0.27–0.35mm: Industrial motors, cost-effective
ⓘ"0.20mm motor laminations reduce core loss by approximately 30% compared to 0.35mm at 400Hz—critical for motor efficiency."
- Define Slot/Pole Configuration – Match to motor characteristics:
- 9N12P: High RPM, responsive—FPV racing
- 12N14P: Near-perfect winding factor—most popular for UAVs
- 24N22P: High torque, low cogging—heavy-lift
- 36N30P: Maximum torque density—eVTOL
- Specify Insulation & Coating – Critical for motor reliability:
- Epoxy powder coating (30–60µm, Class H 180°C)
- Corrosion resistance for outdoor and demanding applications
- Dielectric strength > 2.5 kV for reliable insulation
- Choose an Honest Motor Lamination Supplier – Evaluate transparency and trust:
- Full material certificates with every batch (no substitutions)
- Third-party test reports (IEC 60404-2, SGS, CMQIC)
- Transparent pricing without hidden fees
- Consistent quality across all batches
- Proven track record with motor manufacturers
- Responsive engineering support
- Commitment to honesty and transparency
FAQ: Electric Motor Lamination Technical Questions
Electric motor laminations are precision-stamped thin sheets of electrical steel that form the stator and rotor cores of motors and generators. They are critical because: (1) laminations minimize eddy current losses by using thin insulated layers instead of a solid core, (2) precision stamping ensures consistent geometry for optimal magnetic flux, (3) burr-free edges protect winding insulation, and (4) high stacking factor maximizes magnetic material density—all of which directly impact motor efficiency, torque, and thermal performance.
The optimal lamination thickness depends on the motor's operating frequency. For high-frequency motors (up to 40 kHz PWM), 0.15–0.20mm laminations are optimal. 0.20mm achieves core loss ≤ 8.5 W/kg at 400Hz—approximately 30% lower than conventional 0.35mm material—delivering longer flight times and cooler operation. For FPV racing motors operating at extreme RPM, 0.15mm laminations provide ultimate performance. 0.35mm is suitable for cost-sensitive industrial motors with lower operating frequencies.
Burr height is the raised edge left on stamped metal after the punching process. In motor laminations, 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.
Electric motor laminations are produced using progressive stamping dies to punch laminations from electrical steel coils—ideal for high-volume production with low per-unit cost. Laser-cut laminations use fiber lasers to cut laminations—ideal for prototyping, complex geometries, and low-volume production without tooling investment. Stamping offers: (1) lower per-unit cost at high volumes, (2) faster production speeds, (3) consistent quality across millions of parts, and (4) material efficiency. Both methods produce burr-free edges when properly controlled.
Epoxy powder coating provides three critical functions for motor laminations: (1) electrical insulation between laminations to minimize eddy currents and prevent interlaminar shorts, (2) corrosion resistance for operation in humid, outdoor, or demanding environments, and (3) thermal durability up to 180°C (Class H) to withstand heat generated during motor operation. The coating thickness (30–60µm) is optimized for tight slot geometries with dielectric strength exceeding 2.5 kV.
An honest electric motor lamination supplier provides: (1) full material certificates and origin documentation—no grade substitutions, (2) transparent third-party test reports (IEC 60404-2, SGS, CMQIC), (3) clear communication on tolerances, lead times, and costs without hidden fees, (4) consistent quality across all batches with no compromises, and (5) responsive customer service that addresses technical concerns directly. Reenives is committed to transparency in every aspect of motor lamination supply.
Yes. Reenives supports full customization of electric motor laminations including: lamination thickness (0.15–0.50mm), material grade (35PN210, 35PN250, 50A470, etc.), outer diameter, slot/pole configurations (9N12P, 12N14P, 24N22P, custom), stacking height, and epoxy coating specifications. Private mould development is available for high-volume OEM projects with exclusive design rights—from micro racing motors to large industrial motors.
Why Reenives – Honest Electric Motor Lamination Supplier in China
Reenives has earned its reputation as an honest electric motor lamination supplier in China by combining advanced manufacturing technology with unwavering transparency, integrity, and commitment to customer success.
Our Advantages — Honest Lamination Specialists
- ✅Ultra-Thin Silicon Steel: 0.15–0.20mm laminations reduce core loss by up to 30%—extending motor efficiency and life
- ✅Precision Progressive Stamping: Burr height < 0.03mm, concentricity ±0.01mm, stacking factor ≥ 97.5%
- ✅Wide Range of Configurations: 9N12P, 12N14P, 24N22P, 36N30P, and custom designs
- ✅Full Customization: Private mould development, tailored diameters, and custom stack heights
- ✅Epoxy Coating: 30–60µm, Class H 180°C, dielectric > 2.5 kV
- ✅Trusted Quality Control: IEC 60404-2 testing, third-party verification, and material certificates
- ✅Transparent Pricing: No hidden fees—what we quote is what you pay
- ✅Global Export Capability: Complete export qualifications with worldwide shipping
- ✅100+ R&D Patents: Continuous innovation in motor lamination technology
🤝Our honesty promise: What we quote is what you get. Full material traceability. Third-verified performance data. Transparent pricing without surprises. Engineering support that solves real problems. Consistent quality that eliminates rework. That's what"honest"means at Reenives.
⚡ Ready to source honest, precision motor laminations from China?
Contact Reenives today for engineering consultation, OEM samples, and transparent 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 lamination supplier for the worldwide drone, 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 motor lamination challenges for 1,000+ enterprises worldwide—including leading drone motor manufacturers.
From production to sales, we support bulk purchasing,private mould development, and sample making. We provide tailor-made solutions for your specific motor production scenarios—with transparent pricing, consistent quality, and reliable on-time delivery.
🌐www.reenives-bldcmotor.com | 📧 linda_reenives@163.com | 📱 +86-13377741885
✈️ Global motor manufacturers welcome — consult, visit the factory, or request free samplestoday!
Reenives — Honest Electric Motor Lamination Supplier in China
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