A BLDC inrunner motor stator is the stationary laminated core of an inrunner brushless DC motor—a design where the permanent magnet rotor rotates inside the stator electromagnets. The stator is surrounded by the rotor and generates the magnetic force that drives high-speed rotation . Inrunner motors feature a low moment of inertia, making them ideal for dynamic applications such as multi-copters and high-speed industrial drives .

Reenives manufactures high-quality BLDC inrunner motor stator cores using non-grain oriented silicon steel (0.20mm/0.35mm) with advanced C5 epoxy powder coating—ensuring low core loss and high thermal stability for sustained high-RPM operation .

Reenives offers BLDC inrunner motor stator cores in multiple configurations to meet diverse application requirements:

• By Housing Design: Closed housing (NOVA series, robust IP67-rated for harsh environments) and open housing (ADVANCE series, lightweight for UAV applications) .
• By Power Range: 1kW–5kW (lightweight open design) and 1kW–50kW (rugged closed design) .
• By Material Thickness: 0.20mm (high-frequency high-RPM UAV), 0.27mm, and 0.35mm (general industrial drives).
• By Insulation Coating: C5/C7 epoxy powder coating with >1800V dielectric strength, Class H (180°C) .
• By Pole Count: High pole counts (up to 70) for high torque density, enabling gearbox elimination in most applications .

💡 Reenives specialty: private mould development for custom inrunner stator geometries—from compact 60mm frame sizes to large industrial drive stators, with custom slot profiles and cooling integration .

All parameters validated by Reenives R&D center (ISO 9001:2025 certified) and third-party testing per IEC 60404-2.

📐 Data source: Reenives in-house quality lab, 2025–2026. Full batch traceability and material certificates available.

Reenives BLDC inrunner motor stator cores power critical applications across multiple sectors:

• Fixed-Wing UAVs & Multi-Copters: High power-to-weight ratio (up to 26 kW/kg) with low inertia for dynamic flight control .
• Industrial Automation & Robotics: High-speed positioning, conveyor systems, and AGV drives requiring compact motor dimensions .
• Fluid Systems & Pumps: Precise fluid regulation with high efficiency and low maintenance .
• Medical Equipment: Ventilators, diagnostic devices, and mobility systems requiring low noise and precision control .
• Defense & Mission-Critical Systems: IP67-rated rugged motors for operation in harsh environments .

1. Define power and speed requirements: For UAV applications, higher pole counts (up to 70 poles) can eliminate gearbox requirements and improve system efficiency .
2. Choose lamination material thickness: 0.20mm for high-frequency UAV (40-80kHz PWM) / 0.35mm for robust industrial drives.
3. Select stator geometry and frame size: Compact frame sizes (60mm, 85mm, 170mm) available for different power classes. Custom tooling supports OD 18mm–250mm .
4. Specify environmental protection: IP67-rated designs for harsh environments; open housing designs for weight-critical UAV applications.
5. Request samples and validation: Reenives delivers first-article inspection reports (FAI) and material certificates. Prototype stator samples ready in 7-10 days after design approval.

💡 Engineering support: Free DFM within 48h — send your motor spec or drawing to linda_reenives@163.com.