Reenives: High-precison Drone BLDC Motor Stator Lamination Core Supplier in China

author: Zove

2026-04-22

Lamination Core for Drone BLDC Motors | Reenives: High-precison Drone BLDC Motor Stator Lamination Core Supplier in China

⚠️ Excessive eddy current losses, overheating, and inconsistent motor performance? Engineers and procurement teams often face these issues due to substandard lamination cores. Reenives delivers high-precision stator lamination cores with ultra-low iron loss (≤8.5 W/kg @30kHz), tight tolerances (ID/OD ±0.02mm), and advanced epoxy coating. Whether for heavy-lift drones, eVTOL, or industrial BLDC servos, our lamination cores boost efficiency by up to 12% and extend motor lifespan. 🚁

📑 Technical Contents

1. Lamination Core Definition
2. Classification by Design & Application
3. Technical Parameters + Data Source
4. Key Applications (Drone & BLDC Motors)
5. Engineering Selection Workflow
6. FAQ – Lamination Core Technical Deep Dive
7. Custom Solutions & Contact
8. Dongguan Runlu Motor Technology Co., Ltd.

🔧 Lamination Core: The Heart of Drone BLDC Motors

A lamination core (stator core) is a stack of thin silicon steel sheets precision-bonded or interlocked, forming the stationary magnetic circuit in brushless DC motors. For drone propulsion, the lamination core directly determines electromagnetic efficiency, heat dissipation, and power density. High-quality laminations minimize eddy current losses and hysteresis, enabling higher RPM and longer flight times. Reenives specializes in high-precision drone BLDC motor stator lamination cores with optimized slot geometries and advanced coatings.

High-precision lamination core stack for drone BLDC motor

Figure 1: Precision lamination core (stator stack) with epoxy insulation – ready for winding and assembly.

📌 Classification of Lamination Cores for Drone & BLDC Motors

Based on motor topology and performance requirements, Reenives supplies several lamination core categories:

🔹 Outer Rotor Lamination Cores: Standard for multi-rotor drones (22xx, 28xx series) – high torque density, compact radial design.
🔹 Inner Rotor Lamination Cores: For high-speed racing drones and fixed-wing UAVs – low inertia, excellent high-RPM stability.
🔹 Segmented Stator Lamination Cores: Modular segments for concentrated windings, achieving higher slot fill factor and better thermal management.
🔹 Ultra-thin (0.15mm) High-Frequency Lamination Cores: Designed for >30kHz PWM frequency, ideal for eVTOL and high-power-density propulsion.

📊 Technical Parameters & Verified Data (Reenives Engineering)

All data derived from Reenives internal QA lab and third-party testing per IEC 60404-2 and ASTM A912. These parameters apply to standard lamination cores for drone BLDC and industrial motors.

Series (OD/ID mm)	Stack Height (mm)	Steel Grade	Lam. Thick.	Core Loss @30kHz (W/kg)	Coating Class	Stacking Factor
22xx (22x18)	5-10 custom	35PN210	0.20mm	≤12.3	H (180°C)	≥96.8%
23xx (23x18.5)	6-12	27PH150	0.20mm	≤10.2	H (180°C)	≥96.9%
28xx (28x22)	8-15	35PN210	0.20mm	≤11.8	H+ (200°C opt.)	≥96.5%
31xx (31x26)	10-20	50PN470	0.35mm	≤18.0	F (155°C)	≥97.2%
High-efficiency custom	8-35	0.15mm grade	0.15mm	≤7.5	H (200°C)	≥97.5%

🔬 DATA SOURCE Reenives production & metrology reports 2025, ISO 9001:2015 certified. Tolerances: ID/OD ±0.02mm, stack height ±0.03mm, flatness ≤0.03mm. 100% Hi-pot and insulation resistance tested.

✈️ Key Applications: Drone Propulsion & Industrial BLDC Motors

Our high-precision lamination cores power critical motor systems in:

Drone Propulsion Systems: Agricultural spraying drones, delivery UAVs, FPV racing, heavy-lift cargo drones.
eVTOL (Urban Air Mobility): High-torque density stator cores for lift+cruise configurations.
Industrial BLDC Servo Drives: Robotics arms, automated guided vehicles (AGVs), medical pumps, CNC spindles.
Light Electric Vehicles: E-scooters, e-bikes, and high-speed powertrain motors.

Lamination core stacking and inspection for drone BLDC motor production

Application scene: Precision lamination core stacking for UAV motor manufacturing.

⚙️ 5-Step Engineering Selection for Lamination Cores

Define motor dimensions & slot/pole combination: e.g., 12N14P, 24N28P – this determines lamination geometry and tooling requirements.
Calculate electrical loading & target torque density: Provide motor kV, rated power, and maximum RPM to our engineering team.
Select lamination material & thickness: For high-frequency (>30kHz) use 0.15mm grade; for cost-optimized industrial use 0.35mm; 0.20mm balances performance and cost.
Specify insulation coating: Reenives offers epoxy powder coating (40-80µm, 1800V dielectric, thermal class H). Edge coverage ≥98% prevents inter-lamination shorts.
Request prototype samples & validation: We provide up to 5 free sample sets, including full magnetic test report (B-H curve, iron loss data, dimensional report).

💡 Engineering tip: Reenives supports custom notching patterns, stepped skewing for cogging torque reduction, and private mould development. Send your motor specifications for a free feasibility study and rapid quotation.

❓ FAQ – Lamination Core Technical Deep Dive

🔹 What is the typical core loss value for a 0.20mm lamination core at 30kHz?

For 0.20mm silicon steel (grade 35PN210), the core loss is ≤12.3 W/kg at 30kHz / 0.8T. Reenives’ high-grade 0.15mm material achieves ≤7.5 W/kg, significantly reducing heat generation in drone motors. Source: Reenives material datasheet & IEC 60404-2 test (2025).

🔹 How does lamination thickness affect motor efficiency for UAV applications?

Thinner laminations (0.15mm vs 0.20mm) reduce eddy current losses by approximately 25-30% at 30-50kHz switching frequencies. For racing drones and eVTOL, 0.15mm delivers up to 4% system efficiency gain. However, 0.20mm provides better mechanical rigidity for heavy-lift industrial drones. Both options are available with full magnetic characterization. Source: Reenives motor design simulation & validation report.

🔹 What stacking factor can I expect from Reenives lamination cores?

Reenives guarantees stacking factor ≥96.8% for 0.20mm laminations and ≥97.5% for 0.15mm materials using high-precision interlocking or laser welding. This minimizes air gaps and ensures consistent magnetic flux density. Source: Reenives QA test report per ASTM A912.

🔹 What insulation coating options are available for lamination cores?

Standard epoxy powder coating (40-80µm thickness) provides dielectric strength ≥1800VAC and thermal class H (180°C continuous). For extreme high-temperature environments (up to 200°C), Reenives offers PI-based coating. Edge coverage is ≥98%, eliminating inter-lamination shorts. Source: Reenives stator insulation specification V3.2.

🔹 Can Reenives produce custom lamination cores with skewed slots for cogging torque reduction?

Yes, Reenives supports step-skewed or progressive skewed laminations to reduce cogging torque and torque ripple – critical for smooth drone flight control and low vibration. Minimum order for custom skewing is 500 pcs, with free sample evaluation available for qualified projects. Source: Reenives R&D engineering guidelines.

📢 Request Your Custom Lamination Core – Engineer Support & Free Sample

⚡ Upgrade your drone propulsion with Reenives – China’s leading high-precision lamination core supplier.

✔️ Private mould & tailor-made geometries
✔️ Free technical consultation + prototype samples (up to 5 sets)
✔️ Global shipping with full export documentation

🌐 Visit Official Website

📞 WhatsApp: +86-13377741885
📧 Email: linda_reenives@163.com