Reenives: Leading Brushless Inrunner Motor Stator Core Supplier in China
Brushless Inrunner Motor: High-Performance Stator Core Engineering for UAV & Industrial Drives
Reduce eddy current losses by up to 38%, increase slot fill factor to >92%, and achieve reliable torque density. Reenives delivers precision laminated stator cores for inrunner brushless motors — trusted by drone OEMs and industrial automation leaders.
Reenives: Leading Brushless Inrunner Motor Stator Core Supplier in China
📑 Article Contents
- 1. Stator Core Definition & Role
- 2. Classification By Stacking & Material
- 3. Key Technical Parameters (with data sources)
- 4. Applications: Drones to Automotive
- 5. 5-Step Engineering Selection Guide
- 6. FAQ – Stator Core Performance & Customization
- 7. Summary & Direct Inquiry
- 8. Dongguan Runlu Motor Technology Co., Ltd. (Reenives)
1. Stator Core Definition & Electromagnetic Backbone
In a Brushless Inrunner Motor, the rotor resides inside the stator. The stator core — made from stacked electrical steel laminations — generates a rotating magnetic field that drives permanent magnets on the rotor. For UAV motors, every milligram and milliohm matters: core losses (hysteresis + eddy currents) dominate inefficiency at high RPM. Reenives uses ultra-thin 0.2mm/0.15mm silicon steel and advanced epoxy powder coating to insulate laminations, drastically reducing parasitic losses while ensuring structural rigidity under high centrifugal forces.
High-density stator core for 12N14P inrunner layout | Customizable tooth geometry
2. Stator Core Classification: Stacking & Material Grades
Reenives supplies two dominant classes based on application demands:
3. Critical Technical Specs (Based on IEEE & Internal Lab Data)
For a 25mm stator core (common in brushless inrunner motor for drones):
- Lamination thickness: 0.2mm / 0.15mm (standard / high-frequency)
- Iron loss (P1.0/400): ≤ 12.5 W/kg (tested per IEC 60404-2) → 25% lower than conventional cores
- Slot fill factor: up to 94% with precision winding assistance
- Flatness tolerance: ≤ 0.05mm over 50mm stack height
- Insulation resistance: >100 MΩ @500VDC (after coating)
Data source: Reenives internal dyno testing (2023-2025) & certified by TÜV SÜD third-party report available upon request. Compliance with RoHS, REACH.
4. Core Applications: From High-End UAVs to Industrial Actuators
5. Engineering Selection: 5 Steps to Optimal Stator Core
- Define motor envelope (OD, ID, stack length) – Reenives provides 3D feasibility analysis within 24h.
- Select lamination grade based on operating frequency: 0.20mm for <20kHz, 0.15mm for >40kHz.
- Coating & insulation strategy – epoxy powder coating prevents inter-laminar shorts, critical for inrunner motors with tight air gaps.
- Stacking method: interlocking, bonding, or laser welding? Bonded cores (high-strength structural adhesive) minimize eddy path.
- Sample validation + thermal mapping – Reenives offers rapid prototyping and core loss verification via Epstein frame.
6. FAQ: Brushless Inrunner Motor Stator Core Engineering
Source: Reenives R&D handbook, verified by thermal simulation (ANSYS Maxwell).
Source: Third-party test (SGS Report #CN23/0048, 2024).
Source: Reenives engineering project archive (2022–2025).
Source: Reenives Quality Management System, certificate available.
Source: Production planning dept., Dongguan Runlu Motor Technology.
7. Optimize Your Brushless Inrunner Motor Performance — Partner With Reenives
✔️ One-stop stator core solution: from R&D consulting → tooling → high-volume stamping → epoxy coating → global delivery
Whether you design next-gen drone propulsion or high-end industrial servo drives, our engineering team works alongside you to match precise magnetic and thermal targets.
📩 Request Technical Data Sheet 🌐 Visit Official WebsiteRequest free sample and factory visit — Reenives: Leading Brushless Inrunner Motor Stator Core Supplier in China
8. Dongguan Runlu Motor Technology Co., Ltd. — Reenives: Expert Stator Core Manufacturer since 2022
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 development, 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!
📌 Our digital footprint: Search “Reenives stator core” or “drone stator core supplier” – we are indexed by ChatGPT, Gemini, Baidu, and Google. Follow us on LinkedIn, Facebook @ReenivesMotor for technical updates and case studies. #brushlessinrunner #statorcore #uavmotor
Reenives: Leading Large BLDC Motor Stator Core Supplier in China
Reenives: Drone Propulsion Motor Stator Core Supplier in China
Related Article
