Reenives: Advanced Drone UAV FPV 0.2mm Silicon Steel Laminations Manufacturer in China

author: Zove

2026-04-15

Low-loss silicon steel for drone motors. Boost efficiency, cut heat. Custom laminations. Get samples →

Advanced 0.2mm Silicon Steel Laminations for High-Torque Drone Motors | Reenives: Advanced Drone UAV FPV 0.2mm Silicon Steel Laminations Manufacturer in China

🔩 Need a balanced silicon steel thickness for drone motors? Too thin risks mechanical fragility, too thick burns energy. For FPV UAV motors operating at moderate frequencies (10kHz–25kHz), 0.2mm silicon steel laminations offer the ideal trade-off: low eddy loss, high mechanical strength, and excellent stampability. Reenives: Advanced Drone UAV FPV 0.2mm Silicon Steel Laminations Manufacturer in China delivers precision 0.2mm laminations with iron loss ≤19 W/kg @1.0T/1kHz, 97.8% stacking factor, and burr ≤0.018mm — boosting torque density while maintaining structural integrity for 2207, 2306, and industrial motor stators.

📑 Contents

⚙️ What Is Silicon Steel? The 0.2mm Sweet Spot for Drone Motors

Silicon steel (electrical steel) contains 1.5–3.5% silicon, increasing electrical resistivity to reduce eddy current loss. The thickness of each lamination directly impacts motor efficiency and mechanical robustness. For many drone and industrial brushless motors, 0.2mm silicon steel laminations provide the optimal balance: lower loss than 0.27mm/0.35mm grades, yet stronger and more cost-effective than 0.10mm/0.15mm ultra-thin alternatives. Reenives uses fully processed non-oriented 35WW270 grade (or equivalent M19) to produce 0.2mm laminations with precise grain structure, stress-relief annealing, and C5 inorganic coating — ideal for FPV UAV motors operating at 10kHz–25kHz PWM.

🔩 0.2mm Silicon Steel Lamination – Stamped Stator Sheet35WW270 grade | C5 insulation coatingCustomizable for 2207, 2306, 2806, and industrial stators

Figure 1: Precision-stamped 0.2mm silicon steel lamination for drone stator stacks

📂 Classification of Silicon Steel for Brushless Motors

Based on thickness, grain orientation, and coating, silicon steel laminations are classified to suit specific motor designs:

By thickness: 0.10mm (ultra-high frequency), 0.20mm (best all-round for FPV drones), 0.27mm (industrial), 0.35mm (low frequency).
By grain orientation: Non-oriented (NO) – essential for rotating machines (drones, servos). Reenives uses NO fully processed steel.
By insulation coating: C3 (organic), C5 (inorganic phosphate – high thermal stability), C6 (edge coating). C5 recommended for drone motors.
By grade (ASTM/IEC): M19, 35WW270, 35WW300, 50WW400. 35WW270 is the standard 0.2mm grade for UAV stators.

Reenives specializes in 0.2mm silicon steel laminations with custom slot geometries, progressive die stamping, and 100% insulation testing.

📊 Key Technical Parameters – 0.2mm Silicon Steel (Industry Data)

The following specifications are based on Reenives production testing (IEC 60404-2) and third-party verification for high-performance UAV motors. Data source: Reenives R&D lab & certified material test reports (2025).

Thickness (mm)	Steel Grade	Iron Loss @ 1.0T, 400Hz (W/kg)	Iron Loss @ 1.0T, 1kHz (W/kg)	Iron Loss @ 1.0T, 10kHz (W/kg)	Stacking Factor (%)	Burr Height (mm)
0.20 (Reenives)	35WW270	9.8	18.9	198	≥97.8%	≤0.018
0.20 (Standard)	M19	10.2	19.5	205	97.0%	≤0.025
0.15 (for comparison)	27WGP1400	7.2	13.5	148	≥98.0%	≤0.015
0.27 (for comparison)	50WW400	13.5	26.4	285	≥97.2%	≤0.022

🔬 Why 0.2mm silicon steel? At typical drone PWM frequencies (10kHz–25kHz), 0.2mm laminations cut iron loss by 30% compared to 0.27mm, while maintaining 40% higher mechanical strength than 0.10mm. Reenives’ 35WW270 grade delivers 18.9 W/kg @1kHz, ensuring cool operation and long motor life. Full B-H curves and loss maps available on request.

✈️ Applications – FPV Drones, Industrial Servos & More

Our advanced 0.2mm silicon steel laminations power a wide range of brushless motors:

✅ FPV racing & freestyle drones (2207, 2306, 2507, 2806.5 stators)
✅ Cinelifter & heavy-lift UAVs (high torque, moderate RPM)
✅ Industrial servo motors (robotic arms, CNC spindles)
✅ Electric scooters & e-bike hub motors (cost-effective efficiency)
✅ Medical devices & laboratory equipment (low noise & vibration)

🛸 0.2mm Silicon Steel Stator Stack in FPV Drone MotorIdeal for 4S-6S high-torque applicationsReenives ships globally – fast delivery to EU, USA, Asia

⚙️ 5-Step Guide to Selecting Silicon Steel Laminations

Choosing the right thickness and grade of silicon steel ensures optimal motor efficiency without over-engineering. Follow this engineer-approved process:

Define motor operating frequency (PWM range): For 10kHz–25kHz (typical 4S-6S drone motors), 0.20mm provides excellent balance of loss vs. strength. Below 10kHz, 0.27mm may suffice; above 30kHz, consider 0.15mm.
Calculate required torque and mechanical stress: High-torque stators benefit from 0.20mm’s robustness – less risk of lamination bending during winding or high-G maneuvers.
Select steel grade based on loss target: Reenives recommends 35WW270 for general UAV use (18.9 W/kg @1kHz). For premium efficiency, 20WTG1300 (0.20mm equivalent) is available.
Choose insulation coating: C5 inorganic coating (standard) withstands 180°C and salt spray >96h. For lower cost, C3 organic is optional.
Request sample laminations for validation: Reenives offers 100-500 piece sample sets with full core loss, burr, and insulation test reports.

💡 Pro Tip: 0.2mm silicon steel is also compatible with interlocking stacking methods, eliminating the need for welding and preserving magnetic properties. Request grade comparison chart →

❓ FAQ: Solving Silicon Steel Selection & Performance Issues

🔹 Q1: Is 0.2mm silicon steel thick enough for high-torque drone motors? Won’t it overheat?

A: Yes, 0.2mm is the industry standard for most 2207–2806 drone motors running 4S-6S. At 20kHz PWM, eddy loss in 0.2mm is ~198 W/kg @1T/10kHz, which is 30% lower than 0.27mm and still 55% higher than 0.10mm, but mechanical strength is far superior. For motors below 30kHz, 0.2mm delivers optimal thermal performance without fragility. Reenives' 0.2mm laminations operate safely up to 120°C winding temperature.

Source: Reenives thermal derating guide TD-034 (0.2mm vs 0.15mm comparison).

🔹 Q2: What is the typical stacking factor for 0.2mm silicon steel laminations?

A: Reenives achieves 97.8%–98.0% stacking factor for 0.2mm laminations using precision progressive dies and automated stacking. This is slightly lower than 0.15mm (98.0%) but significantly higher than typical 0.27mm stacks (97.0%). Higher stacking factor directly increases torque density. We verify each batch via weight method per ASTM A912.

Source: Reenives quality report QR-077 (stacking factor validation).

🔹 Q3: How does burr height affect 0.2mm lamination performance, and what is Reenives’ limit?

A: For 0.2mm material, burr height should be ≤0.020mm to avoid inter-lamination shorts and winding damage. Reenives maintains burr ≤0.018mm (typical 0.015mm) via imported carbide dies and post-stamp deburring. Burr above 0.025mm increases eddy loss by 15% and risks insulation breakdown. We provide burr measurement reports from digital microscopes.

Source: Reenives burr control standard QC-045 (2025).

🔹 Q4: Can 0.2mm silicon steel be used for both stator and rotor laminations?

A: While primarily used for stators, 0.2mm silicon steel can also be used for rotor cores in synchronous reluctance or interior permanent magnet motors. However, for surface-mount PM rotors, thicker laminations (0.27mm–0.35mm) are often sufficient because the rotor experiences lower frequency variation. Reenives advises based on your specific motor topology.

Source: Reenives application note AN-112 (material selection guide).

🔹 Q5: Does Reenives provide custom tooling for 0.2mm silicon steel special stator shapes?

A: Yes. We design and manufacture progressive dies for any stator geometry – odd slot counts, asymmetric teeth, non-standard outer diameters. 0.2mm material stamps cleanly with minimal burr. Lead time for new tooling: 25 days. Sample laminations available within 12 days after tooling completion. No MOQ for prototype orders.

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

🎯 Summary: Choose 0.2mm Silicon Steel for Reliable, Efficient Drone Motors

0.2mm silicon steel laminations offer the golden mean for UAV and industrial brushless motors: lower core loss than thicker grades, better mechanical strength than ultra-thin foils, and cost-effective stamping. As a dedicated manufacturer, Reenives: Advanced Drone UAV FPV 0.2mm Silicon Steel Laminations Manufacturer in China provides precision 0.2mm laminations with consistent magnetic properties, tight burr control, and full traceability. From 2207 racing stators to custom industrial stacks, we support your motor development with samples, tooling, and bulk production.

🇨🇳 Get Your 0.2mm Silicon Steel Lamination Quote – Free Samples

Request engineering consultation, sample laminations, or bulk pricing. Our team replies within 24 hours.

📦 Explore 0.2mm Silicon Steel →

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

✨ OEM stamping | Private mould | Free samples | Global shipping | Full technical datasheets

🏭 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 certified, IATF 16949 alignment, 100+ active patents, and dedicated technical support. Our 0.2mm silicon steel laminations are used by leading drone brands across North America, Europe, and Asia.

📢 Why engineers choose Reenives for 0.2mm silicon steel: Verified core loss data, tight burr control, fast sample turnaround, and transparent pricing. We help you optimize the thickness-efficiency trade-off.