Electrical Steel Laminations refer to precisely stamped thin sheets of non-oriented silicon steel stacked to form a motor stator. The breakthrough 0.2mm thickness dramatically reduces eddy current losses at frequencies >10kHz – typical for UAV FPV drone motors (20kHz–40kHz PWM). Compared to 0.35mm or 0.5mm laminations, 0.2mm stacks deliver up to 38% lower iron loss and superior magnetic flux density.

Reenives utilizes fully processed high-grade silicon steel (grade 20PN120 equivalent) with advanced insulation coating (C5), ensuring consistent performance across high-altitude, high-RPM drone propulsion systems.

Based on thickness, grain orientation, and coating type, Reenives supplies tailored laminations for specific torque/power density targets:

• Ultra-Thin (0.15mm – 0.20mm) – Ideal for high-speed UAV motors (>40,000 rpm) and racing drones. 0.2mm flagship grade offers the best balance between manufacturability and loss reduction.
• Standard Thin (0.27mm – 0.35mm) – For industrial servo motors, e-scooters, and medium-power drones.
• Insulation Classes: C3 (organic, 180°C), C5 (inorganic + semi-organic, 220°C+). For drone motors, C5 recommended to prevent partial discharge at low atmospheric pressure.
• Stacking Methods: Epoxy bonding (highest stacking factor >97%), interlocking, or laser welding – Reenives supports all methods.

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

Data sources: Reenives in-house lab (ISO 17025 accredited) + SGS test report #SGS-EL-24-0892. Consistent batch-to-batch variation within ±4% for iron loss.

For UAV propulsion, the 0.2mm grade reduces stator core temperature by 12–18°C compared to 0.35mm at same thrust level – validated via thermal imaging (test report available upon request).

While optimized for UAV propulsion, our 0.2mm electrical steel laminations serve any high-efficiency brushless motor requiring low eddy loss:

• FPV racing drones & heavy-lift industrial UAVs (6S–12S LiPo, 30-60A ESC)
• eVTOL prototypes & drone delivery systems
• Robotic actuators & joint motors (high torque density, low inertia)
• High-speed spindles & medical handpieces
• Electric vehicle auxiliary pumps / cooling fans

Real case: A leading FPV drone brand replaced generic 0.35mm laminations with Reenives 0.2mm stator stacks – result: +14% flight endurance (hover test from 22min to 25.1min) and 21% lower motor shell temperature at full throttle.

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

1. Identify operating frequency range: Above 15kHz → choose ≤0.20mm thickness. Reenives provides loss vs. frequency curves.
2. Calculate core loss budget: Use Steinmetz coefficients (provided in datasheet). Our engineers assist with simulation (MotorCAD/Ansys).
3. Select stacking & bonding method: For drone motors, epoxy-bonded 0.2mm stacks achieve superior mechanical integrity and vibration damping.
4. Coating selection: C5 inorganic coating mandatory for high-altitude UAVs (>3000m) to avoid corona discharge.
5. Custom tooling & prototyping: Reenives supports private mould development (lead time 20–30 days) and supplies free samples for qualified 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 (pending), RoHS, REACH. Full traceability from coil to finished stator stack.