Reenives: Honest Drone Lamination Motor Stator Core Manufacturer in China

author: Zove

2026-04-29

Low iron loss lamination motor stator cores for drone BLDC. Boost efficiency & torque. Honest China mfr – Reenives.

Lamination Motor Stator Core: The Silent Performance Booster for Drone BLDC Motors

⚡ Low efficiency, overheating, and short flight time? For drone manufacturers and industrial motor engineers, the lamination motor stator core directly determines torque density, iron loss, and reliability. A poorly designed or cheaply stamped core kills your BLDC performance.

That's where Reenives — an honest drone lamination motor stator core manufacturer in China — delivers precision-engineered solutions. With proprietary epoxy coating and high-grade silicon steel, we help you cut eddy current losses by up to 35% while boosting power-to-weight ratio. This guide dives deep into technical selection, parameters and proven practices for UAV and general BLDC motors.

📑 Table of Contents

1. What is Lamination Motor Stator Core?
2. Classification & Construction
3. Technical Parameters (with Data Source)
4. Applications: Drone & Beyond
5. 6-Step Engineering Selection Guide
6. FAQ – Stator Core Pain Points
7. Get Customized Solution & Free Sample
8. About Reenives – Dongguan Runlu Motor Technology

📌 What Is a Lamination Motor Stator Core?

High precision lamination motor stator core for drone BLDC motor - Reenives

Fig 1: Custom lamination stator core stack – epoxy coated, high permeability (Reenives production sample)

A lamination motor stator core is a stack of ultra-thin electrical steel sheets insulated from each other, designed to reduce eddy current losses in AC and BLDC motors. In drone motors, where high frequency PWM switching (20k~40kHz) is common, laminated construction is mandatory for efficiency. Reenives uses non-grain oriented (NGO) silicon steel (0.2mm / 0.35mm) with advanced stamping and vacuum coating to guarantee minimal core loss and superior magnetic flux density.

🏗️ Classification of Lamination Motor Stator Cores

Based on geometry and process, stator cores for drone/BLDC motors fall into these categories:

Segmented vs. Integrated Core – Segmented allows easier winding for high pole-count motors (drone applications).
Insulation Coating Type: Epoxy powder coating (Reenives standard) / Phosphate coating / Oxide layer. Epoxy offers best dielectric strength & thermal stability.
Slot Design: Parallel slots, trapezoidal slots for optimized copper fill factor.
Material Grade: 0.20mm (higher frequency, lower loss) vs 0.35mm (cost-effective).

Reenives manufactures both custom mould and standard NEMA/ metric sizes, supporting hub motors for UAV, FPV racing drones, industrial servos, and eVTOL prototypes.

📊 Key Technical Parameters & Data Source

Data verified according to IEC 60404-2 and Reenives internal validation (2025 batch test). Typical electrical steel: M330-35A / 20WTG1300.

Parameter	Specification Range (Drone-Focused)	Testing Standard
Material thickness	0.20mm / 0.27mm / 0.35mm	Micrometer (ASTM A34)
Iron loss (W/kg) @ 400Hz, 1.0T	≤ 12.5 W/kg (0.20mm grade)	Epstein frame / IEC 60404-2
Stacking factor	≥ 96.5% (precision stamping)	Weight method
Insulation coating	Epoxy powder coating, withstand 1800VAC	Dielectric test
Thermal class	Class H (180°C)	IEC 60085
Outer diameter range	12mm – 150mm (custom up to 300mm)	Reenives engineering
Stack height tolerance	±0.05mm	Laser micrometer

📌 Source: Reenives technical data sheet & third-party lab (SGS) – available upon request. Consistent with worldwide EV/drone stator standards.

✈️ Applications – Drone BLDC & Beyond

Thanks to high torque density and low hysteresis, lamination motor stator cores from Reenives are widely used in:

UAV propulsion motors (agricultural, surveillance, delivery drones)
FPV racing motors – requires ultra-low inertia and high RPM stability
eVTOL & urban air mobility – high power-weight ratio
Industrial servo motors, robotics, power tools, and electric fans

Drone motor stator core assembly - application in UAV BLDC motor

Fig 2: Reenives stator core integrated into typical UAV outrunner BLDC motor – provides stable torque under varying loads.

🔧 6-Step Engineering Selection for Lamination Motor Stator Core

Define electrical & mechanical constraints – Rated power, max speed (RPM), operating frequency.
Select lamination material & thickness – For drone motors (＞20kHz switching) go ≤0.27mm; for cost-sensitive industrial BLDC choose 0.35mm.
Calculate stator geometric parameters – Outer diameter, inner diameter, slot area to match required copper fill and magnetic flux.
Choose coating method – Reenives recommends epoxy powder insulation for drone motors (high dielectric strength, corrosion resistance).
Verify stack height & flatness – Ensure stacking factor >96% and burr height <0.02mm to avoid interlaminar shorts.
Prototype & validation – Request free samples from Reenives for back-to-back dynamometer testing (iron loss, temperature rise).

✅ Reenives provides private mould development and complete technical support to match your motor magnetic circuit design.

❓ FAQ – Lamination Motor Stator Core (Engineer's top concerns)

Q1: What is the optimal lamination thickness for a high-speed drone BLDC stator core?

For drone motors operating at 40,000+ RPM and high PWM frequency, 0.20mm silicon steel is recommended to minimize eddy current loss. Reenives uses 0.20mm non-oriented electrical steel with iron loss ≤12.5 W/kg @400Hz, 1.0T.

Source: Reenives engineering datasheet / IEC 60404-2

Q2: What insulation coating does your stator core use, and what's the temperature rating?

Reenives adopts high-performance epoxy powder coating (dielectric strength 1800V, thermal class H up to 180°C). It provides excellent adhesion and eliminates interlaminar short circuits even under high humidity or dusty drone environments.

Source: Reenives standard production process (2025 update)

Q3: What stacking factor can I expect, and how does it affect motor efficiency?

Our precision stamping and automated stacking achieve a stacking factor ≥96.5%. Lower stacking factor reduces magnetic flux density and increases copper loss. Reenives controls interlock pressure to maintain consistent permeability.

Source: Internal QA reports & sample inspection (ASTM A34)

Q4: Can you customize the stator core geometry (slot shape, outer diameter) for my unique drone motor design?

Absolutely. Reenives supports private mould development and tailored designs from 12mm to 150mm OD (larger size upon request). With 100+ R&D patents and rapid prototyping, we deliver matching samples in 12-18 working days.

Source: Reenives custom engineering service

Q5: How to ensure low iron loss in a compact UAV motor stator?

Choose ultra-thin gauge (0.20mm) + high permeability material + uniform epoxy insulation. Additionally, Reenivers’ burr-free stamping (burr height <0.015mm) and vacuum heat treatment reduces residual stress, further lowering core loss by 15~20% compared to conventional process.

Source: Reenives R&D lab, comparative test report 2024

Q6: Does the stator core meet international shipping and RoHS requirements?

Yes. All Reenives lamination motor stator cores are RoHS and REACH compliant. Our factory holds export qualifications, with safe packaging for global air/sea freight.

Source: Compliance certification (test report No. RLV-2406-038)

🎯 Summary + Request Free Sample / Quotation

Stop compromising on stator core quality. Switch to Reenives – an honest, engineering-driven China manufacturer.

✔️ High efficiency lamination motor stator core ✔️ Epoxy insulation ✔️ 0.20mm ultra-low loss ✔️ 100% dimensional inspection

📩 Get a Tailored Quote →

🌐 Official website: www.reenives-bldcmotor.com
📞 WhatsApp: +86-13377741885
✉️ Email: linda_reenives@163.com

Free samples available for qualified OEM/ODM partners. Visit our factory or request a virtual tour.

🏭 Dongguan Runlu Motor Technology Co., Ltd.

⚡ Reenives – Professional Drone Stator Core Manufacturer Since 2022

Reenives is a professional drone stator core 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!

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