Stator and rotor laminations are thin, insulated silicon steel sheets stacked to form the stationary (stator) and rotating (rotor) magnetic circuits in brushless DC motors. For UAV drone propulsion, precision laminations drastically reduce eddy current losses at high switching frequencies (20kHz–50kHz). Reenives specializes in 0.2mm ultra-thin laminations that deliver low hysteresis loss, high permeability, and excellent stacking factor — critical for achieving maximum torque density in compact drone motors.

Each lamination features an advanced C5 insulation coating to withstand high temperatures and prevent interlaminar shorts, ensuring consistent performance even under aggressive throttle changes.

Based on thickness, material grade, and coating type, Reenives offers tailored solutions for different power classes:

• Ultra-Thin Grade (0.15mm – 0.20mm) – Ideal for high-speed UAV motors (>40,000 rpm) and FPV racing drones. 0.2mm flagship provides best loss-reduction vs. manufacturability balance.
• Standard Thin Grade (0.27mm – 0.35mm) – Suitable for industrial servo motors, e-scooters, and medium-power drones.
• Rotor-Specific Designs: Salient-pole rotors for interior permanent magnet (IPM) or surface-mounted magnets; Reenives supports custom rotor geometry for high-strength applications.
• Insulation Coatings: C3 (organic, 180°C) / C5 (inorganic + semi-organic, 220°C+). For drone motors, C5 recommended for high-altitude partial discharge resistance.

All Reenives stator and rotor laminations comply with IEC 60404-8-8 and GB/T 2521-2017. Typical parameters for our drone-grade 0.2mm material (tested at 400Hz/1.0T, third-party validated):

Data sources: Reenives in-house laboratory (ISO 17025 accredited) + SGS test report #SGS-EL-25-0147. Batch consistency guaranteed with CpK ≥1.33.

For rotor laminations, mechanical strength tested per ASTM E8 – tensile strength >380 MPa for 0.2mm material, suitable for high-speed rotation up to 80,000 rpm with proper retaining sleeve.

Our stator and rotor laminations power a wide range of high-performance electric motors:

• FPV racing drones & heavy-lift industrial UAVs (6S–14S LiPo, 30–80A ESCs)
• eVTOL prototypes & drone delivery systems – demanding high torque density and low thermal rise
• Robotic actuators & joint motors (collaborative robots, servo drives)
• High-speed spindles & medical handpieces (up to 100,000 rpm)
• Electric vehicle auxiliary pumps / cooling fans

Real-world validation: A leading FPV drone brand replaced generic 0.35mm laminations with Reenives 0.2mm stator & rotor set → +16% flight endurance (hover test from 21min to 24.4min), motor temperature reduced by 19°C at full throttle. Data from customer field test (available upon NDA).

To achieve optimal power density and thermal performance in your UAV motor design, follow these engineering steps:

1. Define operating frequency & RPM range: Above 15kHz → prioritize 0.20mm or 0.15mm laminations. Reenives provides loss vs. frequency curves.
2. Calculate core loss budget: Use Steinmetz coefficients (supplied in technical datasheet). Our team offers free simulation support (MotorCAD/Ansys Maxwell).
3. Select stacking & bonding method: For drone motors, epoxy-bonded stacks achieve >97% stacking factor and reduce vibration noise.
4. Coating selection: C5 inorganic coating mandatory for high-altitude UAVs (>3000m) to prevent corona discharge.
5. Custom tooling & prototyping: Reenives supports private mould development (lead time 20–30 days) and provides free samples for qualified R&D projects.

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 develop , 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!

✅ Certifications: ISO 9001:2025, IATF 16949 (in process), RoHS, REACH. Full traceability from raw coil to finished stator/rotor stacks.