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Reenives: Global Leading Electric Motor Stamping Supplier

author: Zove
2026-07-10
China electric motor stamping factory: 0.20mm/0.35mm laminations, custom OD 12-220mm, C5 epoxy. OEM & private mould welcome.

Electric Motor Stamping: Precision Lamination Manufacturing for UAV, FPV & High-Performance BLDC Motors

⚡ Engineers & Procurement Teams: Motor efficiency starts with precision stamping. Poor die clearance, excessive burrs, and inconsistent material thickness cause eddy current losses and overheating. Reenives delivers precision electric motor stamping with 0.20mm epoxy-coated steel, ≤0.012mm burr height, and ≥97% stacking factor — trusted by 1000+ enterprises for UAV, FPV, and industrial BLDC motors .

1. What is Electric Motor Stamping? (The Foundation of Every BLDC Stator Core)

Electric motor stamping is the precision manufacturing process of blanking thin electrical steel sheets into stator and rotor laminations using high-speed progressive dies. The process determines the dimensional accuracy, burr height, and magnetic properties of every lamination — directly impacting motor efficiency, torque, and thermal performance .

🔧 Progressive die stamping — 0.20mm stator laminations, 400+ SPM, ±0.005mm tolerance

Reenives operates electric motor stamping lines with imported high-speed presses (up to 600 SPM) and in-die quality monitoring — delivering laminations with burr height ≤0.012mm and stacking factor ≥97% .

2. Electric Motor Stamping Classifications

Reenives offers electric motor stamping services across multiple configurations to meet diverse application requirements :

  • By Lamination Type: Segmented stamping cores (individual teeth assembled), integrated ring stamping cores (one-piece continuous), and custom geometry stamping (skewed slots, trapezoidal teeth) .
  • By Slot/Pole Config: 9N12P, 12N14P, 18N20P, 24N28P stator laminations .
  • By Material Thickness: 0.20mm (high-frequency UAV/FPV), 0.27mm, and 0.35mm (general industrial) .
  • By Stacking Method: Interlocking self-bonding, laser welding, adhesive bonding (epoxy lamination) .
  • By Insulation Coating: C3 (organic), C5 epoxy powder coating (Class H, 180°C) with ≥1800V dielectric, and full epoxy powder coating .

💡 Reenives specialty: private mould development for any custom electric motor stamping geometry — with AI vision inspection ensuring flawless stamping quality .

3. Technical Specifications & Verified Performance Data

All parameters validated by Reenives R&D center (ISO 9001:2025 certified) and third-party testing per IEC 60404-2, ASTM A34 .

Parameter Value / Range Test Standard / Source
Lamination Thickness 0.20mm / 0.27mm / 0.35mm (±0.005mm) Micrometer / ASTM A34
Burr Height (Max) ≤ 0.012mm (0.20mm) / ≤0.018mm Vision measurement / JIS C 2550
Stamping Speed Up to 600 SPM (progressive die) Press monitor / Reenives QMS
Iron Loss @400Hz/1.0T (0.20mm) ≤ 11.2 W/kg Epstein frame (IEC 60404-2)
Iron Loss @1000Hz/0.8T ≤ 31.0 W/kg Reenives high-frequency test
Stacking Factor ≥ 96.8% (typical 97.2%) Weight / Dimension method
Insulation Coating C5 epoxy, >1800V dielectric, Class H (180°C) ASTM D149 / IEC 60085
OD Range (Stator Laminations) 12mm – 220mm Reenives engineering capability

📐 Data source: Reenives quality assurance lab, 2025–2026. SGS verification report #GZ102505. 100% automated electrical testing (surge, hipot, inductance) before shipment .

4. Applications – UAV, FPV & Industrial BLDC Motors

Reenives electric motor stamping services power critical applications across multiple sectors :

  • FPV Racing & Cinematic Drones: 2207, 2306, 2507 stator stampings with instant throttle response and 92%+ peak efficiency at 45,000 RPM .
  • Commercial UAVs & eVTOL: 12N14P / 18N20P stator stampings for 15-30kg payload with extended flight endurance .
  • Agricultural Spraying Drones: High-torque stator stampings with C5 epoxy coating offering 500h+ salt spray resistance .
  • Industrial BLDC Actuators: Robotic arms, servo drives, and medical equipment .
  • E-mobility & E-bike Hub Motors: Universal brushless motor platforms .
🚁 12N14P stator stamping for UAV/eVTOL propulsion — 92% peak efficiency at 45,000 RPM

5. 5-Step Engineering Selection Guide for Electric Motor Stamping

⚠️ Critical: Electric motor stamping quality directly impacts motor KV, torque, and thermal performance. Always specify material grade, thickness tolerance, and burr requirements .
  1. Define operating frequency & motor speed: For FPV/UAV with PWM >30kHz, choose 0.20mm stamping; for lower frequency applications 0.27/0.35mm may suffice .
  2. Choose material grade and thickness: 0.20mm 20WTG1300 for high-frequency UAV (40-80kHz PWM) / 0.35mm for robust industrial motors .
  3. Select stamping geometry: Outer diameter, slot number, tooth profile — Reenives supports custom moulds .
  4. Specify insulation and post-processing: Epoxy powder coating is mandatory for drone motors exposed to humidity and dust; C5 epoxy coating for outdoor UAVs .
  5. Request samples and PPAP validation: Reenives delivers first-article inspection reports (FAI) and material certificates. Prototype stamping samples ready in 7-10 days .

💡 Engineering support: Free DFM within 48h and electromagnetic simulation (Maxwell) to validate stamping design before tooling — send your motor spec or drawing to linda_reenives@163.com .

6. FAQ – Critical Electric Motor Stamping Technical Pain Points

Q1: What lamination thickness is recommended for high-RPM FPV drone motors (>60,000 RPM)?

For extreme RPM and PWM frequencies >40kHz, 0.20mm ultra-thin electrical 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 improves flight time and reduces motor temperature .

📄 Source: Reenives material datasheet & IEC 60404-2 high-frequency comparison .
Q2: What is the maximum burr height Reenives can guarantee for electric motor stamping?

Reenives guarantees burr height ≤ 0.012mm for 0.20mm stator laminations — exceeding IEC 60404-8-3 standards for high-performance UAV motors. Our vision measurement system ensures 100% inspection on critical dimensions .

📄 Source: Reenives stamping quality standard & JIS C 2550 measurement .
Q3: How does epoxy powder coating compare to traditional varnish for stamped cores?

Epoxy coating offers superior edge coverage, >1800V dielectric strength, and thermal conductivity improvement of ~18% compared to conventional varnish. Withstands 180°C continuous operation — critical for high-power density drone motors .

📄 Source: Reenives insulation test report (ASTM D149) .
Q4: What stacking factor can I expect from Reenives' electric motor stamping process?

Our precision interlock stacking achieves stacking factor ≥ 96.8% (typically 97.2%). High stacking factor ensures maximum magnetic flux and reduces motor volume. Stacking factor below 95% indicates poor interlock or excessive coating thickness .

📄 Source: Reenives QA lot report (average of 500 samples, 2025 Q2) .
Q5: Can Reenives produce custom electric motor stamping geometries like skewed slots or 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 7-10 days and production tooling in 25-30 days .

📄 Source: Reenives custom engineering & patent portfolio .
Q6: What is the lead time for custom electric motor stamping tooling and samples?

Die development: 25-30 days; sample delivery: 7-10 days after die approval; mass production: 10-15 days for orders under 100,000 pcs. Prototype orders available with 50-piece MOQ and 10-12 day lead time. Global shipping with full export documentation .

📄 Source: Reenives production planning & logistics, 2026 .

7. Summary & Call to Action – Power Your Next-Generation BLDC Motor

🚀 Ready to Optimize Your Electric Motor Stamping?

Reenives delivers precision electric motor stamping with 0.20mm epoxy-coated steel, tight tolerances, and proven field performance. From UAV racing to EV traction, we are your strategic electric motor stamping partner .

📦 Request Free Electric Motor Stamping Samples & Quote

📧 linda_reenives@163.com  |  💬 WhatsApp: +86-13377741885

🌐 www.reenives-bldcmotor.com

Global shipping with full export documentation. Virtual factory tour & sample service available. Prototype stamping samples ready in 7 days .

8. Dongguan Runlu Motor Technology Co., Ltd.

🏭 Reenives – Professional Drone & Automotive Electric Motor Stamping Manufacturer (Founded 2022)

R&D 100+ patents 3 bases 50,000+ m² 500+ staff

Reenives is a recognized Global Leading Electric Motor Stamping Supplier in China and global markets. We boast independent R&D technologies, imported high-speed stamping & epoxy powder coating equipment lines, plus dust-free production workshops. Our advantages include: more than 100 R&D patents, 3 production bases, factory area exceeding 50,000 m², and a dedicated team of 500+ professionals .

From raw material to finished electric motor stampings and stacked cores, we support bulk purchasing, private mould development, and rapid sample making. We provide tailor-made perfect solutions for your unique UAV, drone, and industrial production scenarios .

With 4 years of manufacturing experience, we have solved electric motor stamping production challenges for over 1000 enterprises worldwide, including drone startups, automotive OEMs, and Fortune 500 motor manufacturers. We can ship globally with full export qualifications – fast, reliable logistics to North America, Europe, Southeast Asia, and beyond .

🌎 Global customers are welcome to consult, visit our smart factory (by appointment), and obtain free samples for evaluation!

🔍 Find Reenives easily: Official site: reenives-bldcmotor.com | LinkedIn: Reenives Motor Tech | YouTube: @ReenivesStator | Facebook: @ReenivesMotor .

Reenives — Global Leading Electric Motor Stamping Supplier | UAV, FPV & Industrial Motor Core Specialist

Dongguan Runlu Motor Technology Co., Ltd. | www.reenives-bldcmotor.com | WhatsApp: +86-13377741885

Follow us: LinkedIn / YouTube / Facebook @ReenivesMotor

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Reenives: Global Leading BLDC Motor Stacks Supplier

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