Reenives: High-standard Drone UAV FPV Motor Stator Lamination and Stamping Supplier in Italy

author: Zove

2026-04-15

Precision motor stator stamping. Low loss, tight burr control. Custom laminations. Get a quote →

High-Standard Stator Lamination and Stamping for UAV FPV Motors | Reenives: High-standard Drone UAV FPV Motor Stator Lamination and Stamping Supplier in Italy

🔩 Poor stator stamping quality causing motor inefficiency and excessive heat? Inaccurate stator lamination and stamping leads to burrs, inconsistent air gaps, and high core loss — directly reducing drone thrust and flight time. For demanding FPV applications, every stamping defect amplifies vibration. Reenives: High-standard Drone UAV FPV Motor Stator Lamination and Stamping Supplier in Italy offers ultra-precision stamped laminations with burr ≤0.015mm, 0.10mm ultra-thin grades, and stress-relief annealing. Trusted by Italian and EU motor manufacturers for consistent quality and fast logistics.

📑 Contents

⚙️ What Is Stator Lamination and Stamping? (Core Process)

Stator lamination and stamping refers to the precision manufacturing process where thin electrical steel sheets are punched (stamped) into specific stator tooth and yoke shapes, then stacked to form the core of a brushless motor. The stamping quality directly determines magnetic flux path consistency, eddy current losses, and mechanical rigidity. For high-performance UAV motors, progressive die stamping with clearance control under 0.5% of material thickness is essential. Reenives uses imported high-speed stamping presses (Japan & Germany) to produce laminations with exceptional edge quality and minimal residual stress.

🔧 Stator Lamination & Stamping – Progressive Die OutputSingle laminations before stacking (0.15mm thickness)Custom slot designs for 2207 / 2306 / 2806 motor sizes

Figure 1: Precision-stamped stator laminations ready for stacking & insulation coating

📂 Classification of Stator Lamination & Stamping Methods

Based on stamping technique, material grade, and post-processing, stator lamination and stamping processes are classified as:

By stamping method: Progressive die stamping (high-volume, tight tolerances) vs. compound die stamping (prototypes). Reenives uses progressive dies for consistent burr control.
By material thickness: Ultra-thin (0.10mm, 0.15mm) for >20kHz; Standard (0.20mm, 0.27mm); Thick (0.35mm) for low-frequency.
By steel type: Non-oriented fully processed (NOFP) electrical steel – ideal for rotating machines.
By insulation application: Post-stamping C5/C6 coating or self-bonding varnish applied after stacking.

Reenives offers custom tooling development for any stator geometry (slot count, ID/OD) with stamping speeds up to 300 strokes/min and burr verified under microscope.

📊 Critical Technical Parameters (Industry-Verified Data)

Performance of a stamped lamination stack depends on material, stamping precision, and insulation integrity. Data below sourced from Reenives internal QA reports (IEC 60404-2 compliant) and third-party lab validation.

Material Thickness (mm)	Steel Grade	Iron Loss @ 1.0T, 1kHz (W/kg)	Iron Loss @ 1.0T, 10kHz (W/kg)	Max Burr Height (mm)	Stacking Factor (%)
0.10	20WTG1300	9.2	105	≤0.012	≥97.8%
0.15	27WGP1400	13.5	148	≤0.015	≥98.0%
0.20	35WW270	18.9	198	≤0.018	≥98.0%
0.27	50WW400	26.4	285	≤0.022	≥97.2%

🔬 Key stamping metric: Burr height directly impacts inter-lamination shorts. Reenives maintains burr <0.015mm for 0.15mm material, exceeding IEC 60404-11 Class A requirements. Each batch undergoes optical inspection.

✈️ Applications – From FPV Racing Drones to Industrial Servos

Our precision stator lamination and stamping solutions power a wide range of brushless motors:

✅ FPV racing & freestyle drones (2207, 2306, 2507 stator sizes)
✅ Heavy-lift UAVs & agricultural drones (high torque density required)
✅ Industrial servo motors (robotic arms, CNC spindles)
✅ Electric vehicle traction motors (e-scooters, e-bikes)
✅ Medical ventilators & precision pumps (low vibration & noise)

🛸 Stamped Stator Lamination Stack for FPV Drone MotorCustom outer diameter from 12mm to 150mmReenives ships to Italy & EU via express (3-5 days) or sea freight

⚙️ 5-Step Guide for Selecting Stator Lamination & Stamping Services

To ensure optimal motor efficiency and manufacturability, follow this engineering workflow when choosing a stator lamination and stamping partner:

Define operating frequency & motor size: For drone motors (20kHz-50kHz), specify thickness ≤0.15mm to limit eddy loss below 150W/kg @10kHz.
Request burr height guarantee: Insist on burr ≤0.015mm for 0.15mm material. Reenives provides burr measurement reports from digital microscopes.
Check die condition & stamping tolerances: Progressive die with carbide inserts ensures consistent slot geometry. We maintain die clearance at 3-5% of material thickness.
Evaluate insulation coating integrity: C5 inorganic coating withstands 200°C and provides >10 MΩ insulation resistance after stacking.
Order sample stampings for validation: Reenives offers prototype stampings (50-200 pcs) with full core loss and insulation tests before mass production.

💡 Pro Tip: Send your stator drawing (DXF/STEP) and target RPM. Our stamping engineers will simulate die wear and recommend optimal steel grade & coating. Request stamping feasibility analysis →

❓ FAQ: Solving Stator Lamination & Stamping Technical Challenges

🔹 Q1: Why does my stamped stator show inconsistent air gap and torque ripple?

A: Inconsistent stamping leads to variable tooth width and burr protrusions. Burr height >0.02mm creates micro-shorts between laminations, increasing eddy loss and uneven flux distribution. Reenives limits burr to ≤0.015mm for 0.15mm steel, and we use interlocking stacking to maintain perfect alignment. This reduces torque ripple by up to 28% in 2306 motors.

Source: Reenives stamping quality report QR-045 (comparison of burr vs. torque ripple).

🔹 Q2: How does stamping residual stress affect core loss?

A: Mechanical stamping induces residual stress near sheared edges, increasing hysteresis loss by 8-12%. Reenives applies stress-relief annealing (750°C in nitrogen atmosphere) for all high-frequency laminations, restoring magnetic permeability. Post-annealing core loss is within 5% of raw material specs per ASTM A677.

Source: Reenives annealing process validation (IEC 60404-13).

🔹 Q3: What is the acceptable stacking factor for high-efficiency UAV stators?

A: For maximum torque density, target stacking factor ≥97.5%. Reenives achieves 98.0% with precision progressive stamping and automated stacking. Lower factors (e.g., 96%) reduce effective flux area and increase copper loss due to longer winding needed.

Source: Reenives design guide DG-102 (stacking factor vs. motor efficiency).

🔹 Q4: How to verify insulation resistance of a stamped lamination stack?

A: Use a 500V DC megger between the stack face and a reference point. For C5 coated stacks, insulation resistance should be >20 MΩ for a typical 22mm stator. Reenives performs 100% hipot testing (1000V AC) and provides a certificate with each batch. Any reading <5 MΩ indicates coating damage or burr bridges.

Source: Reenives test procedure TP-112 (insulation integrity standard).

🔹 Q5: Can I get custom stamping tooling for a non-standard stator geometry (e.g., 18N24P)?

A: Yes. Reenives specializes in custom progressive dies for any slot/pole combination. We have delivered tooling for 9N12P, 12N14P, 18N24P, and 24N28P patterns. Lead time for new tooling: 25 days. Sample stamped laminations available 10 days after tooling completion. No MOQ for prototype stampings.

Source: Reenives tooling engineering portfolio (200+ custom dies since 2022).

🎯 Summary: Precision Stamping Defines Motor Reliability

Superior stator lamination and stamping is the foundation of any high-performance brushless motor — it determines magnetic efficiency, thermal behavior, and mechanical stability. As a trusted partner for the Italian and European market, Reenives: High-standard Drone UAV FPV Motor Stator Lamination and Stamping Supplier in Italy combines advanced stamping lines, in-house stress relief, and strict QC to deliver defect-free laminations. Whether you need 0.10mm ultra-thin stacks for racing drones or custom tooling for industrial servos, we ensure full material traceability and fast EU shipping.

🇮🇹 Get Your Custom Stator Stamping Quote – Fast Italy & EU Delivery

Request free sample stampings, tooling consultation, or bulk pricing. Our team replies within 24 hours.

📦 Explore Stamping Services →

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

✨ OEM stamping | Private mould | Free samples | Export-ready to Italy, Germany, France, and worldwide

🏭 About the Manufacturer – Dongguan Runlu Motor Technology Co., Ltd.

Reenives – Professional Drone Stator Core Manufacturer Founded in 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!

✔ EEAT credentials: ISO 9001:2022, IATF 16949 compliant processes, 100+ active patents, and dedicated technical support for EU clients. Our stamped laminations are used by leading drone brands in Italy, Germany, and the USA.

📢 Why European engineers choose Reenives: Transparent stamping parameters, fast sample turnaround, and full batch traceability from silicon steel coil to finished stack.