Reenives: Top1 UAV FPV Drone Motor Stator Lamination Stack Supplier in USA

author: Zove

2026-04-15

Precision lamination stack for drone motors. Cut eddy loss, boost torque. Custom stator stacks. Get samples →

Precision Lamination Stack for High-RPM UAV FPV Motors | Reenives: Top1 UAV FPV Drone Motor Stator Lamination Stack in USA

⚡ Motor vibration? Torque ripple killing flight stability? The root cause is often a poorly manufactured lamination stack with inconsistent thickness or high eddy current loss. For FPV drone motors operating above 30,000 RPM, every micron matters. Reenives: Top1 UAV FPV Drone Motor Stator Lamination Stack in USA delivers ultra-precision stator stacks with 0.1mm ultra-thin silicon steel, 98% stacking factor, and stress-relief annealing — slashing core loss by 40% and extending motor lifespan. Trusted by US drone builders and industrial OEMs.

📑 Contents

🔧 What Is a Lamination Stack? (Stator Core Fundamentals)

A lamination stack (stator core) is a stacked assembly of thin electrical steel sheets, insulated from each other, that forms the stationary part of a brushless motor. Each lamination is precision-stamped to reduce eddy currents — the thinner each sheet, the lower the high-frequency loss. For FPV drone motors, the lamination stack determines torque density, heat dissipation, and responsiveness. Reenives produces custom stacks with thicknesses from 0.10mm to 0.35mm, using non-oriented silicon steel for isotropic magnetic properties.

📐 Lamination Stack – Stator Core SamplePrecision-stacked & welded/ bonded assemblyAvailable for 2207, 2306, 2806, and custom sizes

Figure 1: Complete lamination stack for FPV drone motor (stator with insulation coating)

📂 Classification of Lamination Stacks for Brushless Motors

Based on material, thickness, and joining method, lamination stacks fall into categories critical for motor performance:

By thickness grade: Ultra-thin (0.10mm, 0.15mm) for >20kHz PWM; Standard (0.20mm, 0.27mm) for industrial servos; Thick (0.35mm) for low-frequency motors.
By steel type: Non-oriented (NO) – best for rotating machines; Grain-oriented (GO) – only for transformers (not recommended).
By stacking method: Interlocking (self-bonding), laser welding, epoxy bonding, or riveting. Reenives uses interlocking + C5 coating for superior mechanical strength.
By insulation coating: C3 organic, C5 inorganic, C6 edge coating – C5 offers highest thermal resistance for drone applications.

Reenives supplies fully customized lamination stacks with tight tolerances (burr ≤0.02mm) and 100% electrical test before shipment.

📊 Critical Technical Parameters (Industry Standards)

The following data is derived from Reenives in-house testing (ASTM A677 / IEC 60404-2) and third-party verification for high-frequency motor laminations. Source: Reenives R&D report 2025 & certified material test certificates.

Lamination Thickness (mm)	Material Grade	Iron Loss @ 1.0T, 1kHz (W/kg)	Iron Loss @ 1.0T, 10kHz (W/kg)	Stacking Factor (%)	Burr Height (mm)
0.10	20WTG1300	9.2	105	≥97.5%	≤0.015
0.15	27WGP1400	13.5	148	≥97.8%	≤0.018
0.20	35WW270	18.9	198	≥98.0%	≤0.020
0.27	50WW400	26.4	285	≥97.0%	≤0.022

🔬 Key Insight: For USA-based FPV drone manufacturers, the 0.10mm lamination stack reduces high-frequency eddy loss by 47% compared to 0.20mm stacks, directly improving flight time and reducing motor temperature by 12-15°C. Reenives provides full material traceability and UL recognized components on request.

✈️ Applications – From FPV Drones to Industrial Servos

Our lamination stacks are engineered for high-demand brushless motors, including:

✅ FPV Racing & Cinewhoop drones (2207, 2306, 2806.5 stators)
✅ Heavy-lift UAVs & agricultural drones (high torque density)
✅ Industrial servo motors (robotics, CNC spindles)
✅ Electric vehicle auxiliary motors (e-scooters, e-bikes)
✅ Medical device motors (low vibration, high reliability)

🛩️ Typical UAV Stator Lamination Stack AssemblyCustom ID/OD, slot geometry for any motor sizeReenives ships to USA within 5-7 business days (stock sizes)

⚙️ 5-Step Selection Guide for Engineers & Procurement

Choosing the optimal lamination stack requires balancing electrical loss, mechanical strength, and cost. Follow this engineer-approved process:

Define operating frequency range: For drone motors (10kHz-50kHz), choose ≤0.15mm thickness to keep eddy loss below 150W/kg @ 10kHz.
Calculate required stacking factor: Target >97% for high torque density. Reenives achieves 98% with precision interlocking.
Select insulation coating type: C5 inorganic coating withstands 180°C and provides salt spray resistance >96h – ideal for outdoor UAVs.
Specify outer/inner diameter and slot count: We support 12N14P, 9N12P, 24N22P patterns; custom tooling available.
Request sample approval: Reenives offers 10–50 piece sample stacks with full core loss test report before mass production.

Pro tip: Send your motor winding scheme and target RPM, and our engineering team will recommend the optimal lamination thickness and steel grade using finite element analysis (FEA). Consult now →

❓ FAQ: Solving Stator Lamination Stack Technical Challenges

🔹 Q1: Why does my UAV motor have excessive no-load current and heat even with good magnets?

A: The most common cause is high eddy current loss in the lamination stack due to either too-thick steel (e.g., 0.27mm) or poor inter-lamination insulation. Switching to a 0.10mm ultra-thin lamination stack with C5 coating reduces eddy loss by ~60% at 30kHz. Reenives’ 20WTG1300 stacks show typical no-load current reduction of 22% in 2306 motors.

Source: Reenives motor dyno test (vs standard 0.20mm stack, 24V, 35kHz PWM).

🔹 Q2: What is the acceptable burr height for a high-efficiency lamination stack?

A: Burr height directly affects stacking factor and can cause inter-lamination shorts. For drone motors, burr must be ≤0.02mm. Reenives uses Japanese progressive dies and secondary deburring to maintain burr <0.015mm, ensuring >97.5% stacking factor and no electrical bridges.

Source: Reenives quality control standard Q/RL 012-2024; verified by Mitutoyo surface tester.

🔹 Q3: Does the joining method (welding vs interlocking) affect motor performance?

A: Yes. Laser welding can create localized magnetic saturation and increase core loss by 3-5% near the weld seam. Reenives primarily uses interlocking (self-bonding) technology, which maintains uniform magnetic properties across the stack. For high-vibration UAVs, we also offer epoxy bonding as an option without magnetic distortion.

Source: Reenives application note AN-107 (comparison of stacking methods).

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

A: Use a megger (500V DC) between the stack surface and a reference point. For C5 coated stacks, minimum insulation resistance should be >10 MΩ per cm². Reenives performs 100% hipot testing on every production batch, and we provide insulation resistance certificates with each shipment.

Source: Reenives test procedure TP-089 (IEC 60950 compliant).

🔹 Q5: Can I get custom lamination stacks for non-standard stator geometries (e.g., 18N24P)?

A: Absolutely. Reenives specializes in private mould development for any slot/pole combination. We have delivered over 200 custom stator designs for US clients. Lead time for new tooling: 20–25 days. Sample stacks available within 15 days after mould completion.

Source: Reenives custom engineering team portfolio (2023-2025).

🎯 Summary: Why Precision Lamination Stack Defines Motor Success

The lamination stack is the heart of any brushless motor — its material, thickness, and stacking quality directly impact efficiency, temperature rise, and reliability. As a premier supplier serving the USA market, Reenives: Top1 UAV FPV Drone Motor Stator Lamination Stack in USA combines advanced stamping lines, strict QC, and engineer-to-engineer support. Whether you need ultra-thin 0.10mm stacks for racing drones or custom stacks for industrial servos, we deliver consistent quality with full traceability.

🇺🇸 Get Your Custom Lamination Stack Quote – Fast US Shipping

Request free samples, engineering drawings, or a bulk quotation. Our team replies within 24 hours.

📦 Browse Lamination Stack Products →

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

✨ OEM | Private mould | Free samples | Export-ready to USA, Europe, Asia

🏭 About the Manufacturer – 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!

✔ EEAT credentials: ISO 9001:2022 certified, RoHS & REACH compliant, 100+ active patents, and dedicated US sales support. Our lamination stacks are used by leading drone brands across North America.

📢 Why US engineers choose Reenives: Fast prototyping, transparent test data, and full supply chain visibility – from raw silicon steel coil to finished lamination stack.