A UAV brushless motor stator is the stationary laminated core that generates the rotating magnetic field driving drone propulsion. The stator consists of stacked silicon steel laminations with precision slots for copper windings. When energized by an ESC, it interacts with the rotor's permanent magnets to produce thrust. For drone applications, stator lamination quality directly determines torque output, RPM stability, power-to-weight ratio, and thermal management .

Reenives manufactures high-quality UAV brushless motor stator laminations using non-grain oriented electrical steel with advanced epoxy powder coating — reducing eddy current losses by up to 45% compared to conventional varnish insulation . Most drone motors use the outrunner configuration, where the rotor spins outside the stator, enabling more magnetic poles and higher torque density .

Reenives offers UAV brushless motor stator laminations in multiple configurations to meet diverse drone and propulsion requirements :

• By Slot/Pole Config: 12N14P (high torque density, commercial UAVs), 9N12P (lightweight FPV racing), 18N20P (heavy-lift drones), 24N28P (eVTOL propulsion) .
• By Material Thickness: 0.15mm (extreme high-RPM FPV), 0.20mm (standard high-frequency UAV), 0.27mm, and 0.35mm (general industrial BLDC) .
• By Stacking Method: Interlocking self-bonding, laser welding, or epoxy bonding for maximum structural integrity .
• By Insulation Coating: C5 epoxy coating (Class H, 180°C) with ≥1800V dielectric, or PI coating (220°C) for extreme thermal environments .

💡 Reenives specialty: private mould development for custom UAV stator geometries — including skew designs that reduce cogging torque by 30-50% for smoother drone operation .

All parameters validated by Reenives R&D center (ISO 9001:2025 certified) and third-party testing per IEC 60404-2, ASTM A937. Critical for UAV brushless motor designers optimizing propulsion efficiency and flight endurance .

📐 Data source: Reenives quality assurance lab, 2025–2026. TÜV SÜD certification on BLDC stator laminations. 100% automated electrical testing (surge, hipot, inductance) before shipment .

Reenives UAV brushless motor stator laminations power critical propulsion applications across multiple sectors :

• FPV Racing & Cinematic Drones: 2207, 2306, 2507 stators with instant throttle response and 92% peak efficiency at 45,000 RPM .
• Commercial UAVs & eVTOL: 12N14P / 18N20P stators for 15-30kg payload with extended flight endurance .
• Agricultural Spraying Drones: High-torque stators with C5 epoxy coating offering 500h+ salt spray resistance .
• Industrial BLDC Actuators: Robotic arms, servo drives, and medical equipment requiring smooth, precise torque.
• Delivery & Logistics Drones: Heavy-lift octocopters with optimized thermal dissipation.

1. Define motor outer diameter and stack length: Based on thrust and power targets (e.g., 28mm OD for 5-inch FPV drone) .
2. Choose lamination material thickness: 0.15mm for high-RPM racing >50,000 RPM; 0.20mm for standard UAV 40-80kHz PWM; 0.35mm for robust industrial BLDC motors .
3. Select slot/pole combination: 9N12P for high RPM racing, 12N14P for balanced torque/speed (most common for UAVs), 18N20P for high torque density heavy-lift .
4. Specify insulation and environmental protection: C5 epoxy coating for outdoor UAVs; polyimide coating for extreme temperatures; oil-compatible for EV/hybrid applications.
5. Request samples and validation: Reenives delivers first-article inspection reports (FAI), material certificates, and core loss test results. Prototype samples ready in 7-10 days after design approval .

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