Reenives: Global Leading BLDC Motor Lamination Stamping Manufacturer

author: Zove

2026-05-04

Precision motor lamination stamping – 0.2mm cores, low loss, epoxy coat. Reenives – global BLDC leader.

Motor Lamination Stamping: The Core of High-Performance BLDC Motors

🌍 Reenives: Global Leading BLDC Motor Lamination Stamping Manufacturer

⚙️ High iron loss, inconsistent stacking, and short motor life? For drone and industrial BLDC engineers, motor lamination stamping quality dictates efficiency, thermal performance, and reliability. Inferior stamping leads to eddy currents, vibration, and field failures.

Reenives has established itself as a global leading BLDC motor lamination stamping manufacturer. With over 100 R&D patents, imported high-speed presses, and a dedicated focus on 0.20mm ultra-thin laminations, we deliver burr-free stator cores with epoxy insulation. This guide provides technical insights for procurement specialists and motor designers seeking world-class stamping quality, verifiable data, and a trusted long-term partner.

📑 Table of Contents

1. What Is Motor Lamination Stamping?
2. Classification of Lamination Stamping
3. Technical Parameters & Data Source
4. Applications: Drone & General BLDC
5. 5-Step Stamping Selection Guide
6. FAQ – Stamping Core Technical Pain Points
7. Get Free Sample & Custom Stamping Quote
8. About Reenives – Dongguan Runlu Motor Technology

📌 What Is Motor Lamination Stamping?

Global leading motor lamination stamping stator core - Reenives BLDC stamping

Fig 1: Precision motor lamination stamping stack – 0.20mm electrical steel, epoxy coated. Manufactured by Reenives, a global leading BLDC stamping manufacturer.

Motor lamination stamping is the process of blanking thin electrical steel sheets into stator or rotor laminations, then stacking them to form a core. For BLDC motors, stamping precision directly affects eddy current loss, magnetic flux, and thermal stability. Reenives uses progressive dies with optimized clearances and imported high-speed stamping presses (Japan/Germany) to achieve burr height ≤0.012mm and thickness tolerance ±0.005mm. Every lamination receives epoxy powder coating (1800VAC, class H 180°C) before interlock stacking, ensuring superior insulation even in demanding drone environments.

🏗️ Classification of Motor Lamination Stamping

Based on tooling and final assembly, Reenives supplies three main types for BLDC motors:

Segmented stamping cores – Individual teeth stamped and assembled; ideal for high pole-count drone motors (24N28P) to simplify winding and increase copper fill.
Integrated ring stamping cores – One-piece continuous laminations for maximum rigidity; used in heavy-lift UAVs, eVTOL, and industrial servos.
Custom geometry stamping – Skewed slots, trapezoidal teeth, non-standard diameters. Reenives supports private mould development for any custom stator design.

Our stamping capabilities cover outer diameters from 12mm to 220mm, stack heights up to 100mm, and all common slot numbers (9, 12, 18, 24, 36, 48). Material grades include 0.20mm (ultra-low loss), 0.27mm (balanced), and 0.35mm (cost-effective).

📊 Technical Parameters – Motor Lamination Stamping

All values are verified according to IEC 60404-2 and ASTM A34 standards, tested by Reenives in-house lab and SGS (2025). Primary steel: 20WTG1300 (0.20mm), 27WGP1400, 35W270.

Parameter	Specification (BLDC/Drone Optimized)	Test Standard / Source
Lamination thickness	0.20mm / 0.27mm / 0.35mm ±0.005mm	Micrometer / ASTM A34
Iron loss @ 400Hz, 1.0T	≤11.2 W/kg (0.20mm grade)	Epstein frame / IEC 60404-2
Iron loss @ 1000Hz, 0.8T	≤31.0 W/kg (0.20mm)	Reenives high-frequency test
Stacking factor	≥96.8% (typical 97.2%)	Weight / volume method
Insulation coating	Epoxy powder coating, withstand 1800VAC	Dielectric test / IEC 60404-11
Thermal class	Class H (180°C continuous)	IEC 60085
Burr height (max)	≤0.012mm	Vision measurement / JIS C 2550
Outer diameter range	12mm – 220mm (custom molds available)	Reenives engineering catalog

📌 Source: Reenives internal report #RV-2505 & SGS certificate. Full material COA available per batch.

✈️ Applications – Drone, UAV, FPV & General BLDC

Reenives motor lamination stamping is deployed across high-demand sectors:

FPV racing drones – ultra-high RPM (60k+), instant throttle response, minimal eddy loss.
Agricultural & delivery UAVs – extended endurance, lower temperature rise, high reliability.
eVTOL and advanced air mobility – lightweight, high torque density cores.
Industrial BLDC servos, robotics, e-scooters, power tools – universal compatibility.

BLDC motor assembly using Reenives motor lamination stamping core

Fig 2: Stator stamping core integrated into a BLDC motor – high stacking factor and low iron loss ensure reliable performance across drone and industrial applications.

🔧 5-Step Selection Guide for Motor Lamination Stamping

Define motor operating frequency & RPM: For drone motors with PWM >30kHz, choose 0.20mm ultra-thin stamping. For lower frequency applications, 0.27mm or 0.35mm may suffice.
Select insulation coating type: Epoxy powder coating is mandatory for drone environments (humidity, dust, thermal cycling). Request dielectric test reports.
Verify stamping precision (burr & tolerance): Burr height should be ≤0.02mm (Reenives ≤0.012mm). High burr causes interlaminar shorts and increased core loss.
Evaluate stacking factor & batch consistency: Ask for lot samples and COA. Reenives guarantees stacking factor ≥96.8% with typical 97.2%.
Assess custom tooling capability & lead time: Does the supplier support private mould development? Reenives offers 7-10 day prototyping and 25-30 day production tooling with full IP protection.

✅ Reenives provides free samples for qualified OEMs, enabling you to validate iron loss, stacking factor, and thermal performance before mass production. Global shipping with complete export documentation.

❓ FAQ – Motor Lamination Stamping Technical Pain Points

Q1: What is the optimal lamination thickness for high-speed BLDC drone motors (60,000+ RPM)?

For extreme RPM and PWM frequencies >40kHz, 0.20mm ultra-thin silicon steel is essential. Reenives’ 0.20mm grade achieves iron loss ≤11.2 W/kg @400Hz, 1.0T, reducing eddy loss by ~30% compared to 0.35mm. This directly translates to longer flight times and cooler motor operation.

Source: Reenives material datasheet & high-frequency loss comparison per IEC 60404-2

Q2: Which insulation coating do global leading stamping manufacturers use?

Top-tier manufacturers like Reenives use epoxy powder coating (15-25μm per side). It provides 1800VAC dielectric strength, thermal class H (180°C), and exceptional resistance to humidity, dust, and salt spray – verified by 95% RH / 1000h testing without insulation degradation.

Source: Reenives coating line specification & accelerated aging test report (2025)

Q3: What stacking factor should I expect from precision motor lamination stamping?

High-quality stamping achieves a stacking factor ≥96.8% (Reenives typical 97.2%). Stacking factor below 95% indicates poor interlock or excessive coating thickness, leading to reduced magnetic flux and larger motor size for the same torque.

Source: Reenives QA lot report (average of 500 samples, 2025 Q2)

Q4: Can you produce custom stamping geometries (skewed slots, non-standard diameters)?

Absolutely. Reenives specializes in private mould development for any custom stator geometry – skewed slots, asymmetric tooth profiles, non-standard IDs/ODs. With over 100 R&D patents, we deliver prototype stampings in 10-15 days and production tooling in 25-30 days, with full IP protection.

Source: Reenives custom engineering & patent portfolio (CN, US pending)

Q5: How do I verify iron loss consistency across large production batches?

Trustworthy suppliers provide a Certificate of Analysis (COA) per batch, including Epstein frame test results for iron loss, stacking factor, and insulation resistance. Reenives performs random sample testing per lot using a Brockhaus MPG tester and can share raw data upon request.

Source: Reenives quality management system ISO 9001:2024, annual SGS audit

Q6: Does Reenives offer free samples and global shipping for motor lamination stamping?

Yes. Reenives provides free samples for qualified R&D projects (shipping cost may apply for low volumes). We ship worldwide via DHL, FedEx (5-7 business days) or sea freight (25-35 days), handling all export documentation including China-origin certificates, commercial invoice, and customs clearance support.

Source: Reenives sales policy & global shipment records (USA, Europe, Brazil, Australia, Japan)

🎯 Summary + Request Free Sample & Custom Stamping Quote

🌍 Reenives – Global Leading BLDC Motor Lamination Stamping Manufacturer

✔️ 0.20mm ultra-low loss stamping ✔️ Epoxy insulation class H ✔️ Stacking factor >96.8% ✔️ Burr-free ≤0.012mm ✔️ 100+ patents ✔️ Global shipping

📩 Request Free Sample & Quote →

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

Free technical consultation, 3D drawing review, and sample support for volume buyers. Virtual factory tour available.

🏭 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!

🔗 Follow Reenives for stamping innovations: LinkedIn (Reenives Motor Tech), YouTube (@ReenivesLamination), Facebook (Reenives BLDC), Twitter (@Reenives_BLDC).