Drone Motor Stator CRNGO Stamping Supplier
CRNGO Stamping – Precision Non-Grain Oriented Steel Laminations for Drone Motors
Motor efficiency limited by core loss? Need a cost-effective stator material without compromising performance? CRNGO stamping (Cold-Rolled Non-Grain Oriented steel stamping) is the industry-standard material for high-frequency motor cores—offering excellent magnetic properties at a competitive cost. Reenives delivers precision CRNGO stator stampings with 0.2mm silicon steel, burr height < 0.03mm, and epoxy coating—reducing core loss, maximizing efficiency, and providing an optimal balance of performance and cost for drone motors, UAV propulsion, and industrial BLDC applications.
- • What Is CRNGO Stamping?
- • Classification of CRNGO Stator Stampings
- • Technical Specifications & Verified Data
- • Applications: Drone Motors, UAV, Industrial & More
- • 6-Step Engineering Selection Guide for CRNGO Stamping
- • FAQ: CRNGO Stamping Technical Questions
- • Why Reenives – Drone Motor Stator CRNGO Stamping Supplier
- • Dongguan Runlu Motor Technology Co., Ltd.
What Is CRNGO Stamping?
CRNGO stamping refers to the precision stamping of Cold-Rolled Non-Grain Oriented (CRNGO) electrical steel into laminations for motor and generator cores. CRNGO steel—also known as non-oriented silicon steel—has isotropic magnetic properties, meaning its magnetic performance is consistent in all directions. This makes it ideal for rotating electrical machines where magnetic flux changes direction continuously .
How CRNGO stamping works: CRNGO steel coils are fed through progressive stamping dies that punch precise stator and rotor lamination shapes. The laminations are then stacked, bonded, and coated to form complete motor cores.
Key advantages of CRNGO for stator stampings:
- Isotropic magnetic properties – Consistent performance regardless of flux direction
- Cost-effective – Lower cost than grain-oriented steel (CRGO) for rotating applications
- Excellent high-frequency performance – Suitable for drone motors operating at 40 kHz PWM
- Wide availability – Standard material for motor manufacturing
- Precision stamping capability – Allows tight tolerances (±0.02mm) with proper tooling
ⓘ CRNGO insight: "CRNGO stamping is the preferred solution for drone motor stators because it delivers excellent high-frequency performance at a cost that makes commercial UAV propulsion viable."
Reenives manufactures precision CRNGO stator stampings using imported 0.2mm non-oriented silicon steel, progressive stamping dies, and automated epoxy powder coating—delivering optimal magnetic performance for drone motors and industrial BLDC applications .
Classification of CRNGO Stator Stampings
Reenives supplies CRNGO stator stampings across four primary series, tailored to different motor classes and performance requirements:
| Series | Grade / Thickness | Typical Slot/Pole Configurations | Core Loss @ 400Hz | Best For |
|---|---|---|---|---|
| Series A – High-Performance Drone | 35PN210 / 0.20mm | 9N12P, 12N14P | ≤ 8.5 W/kg | FPV racing, high-end UAV |
| Series B – Standard Drone / UAV | 50A470 / 0.35mm | 9N12P, 12N14P | ≤ 12.0 W/kg | General drone motors, cost-optimized |
| Series C – Industrial BLDC | 50A600 / 0.35mm | 12N8P, 24N16P | ≤ 14.0 W/kg | Pumps, actuators, industrial motors |
| Series D – Custom OEM | Any grade / 0.15–0.50mm | Any slot/pole combination | Custom | Specialized designs, low-volume production |
CRNGO stator stampings are available in a range of thicknesses to suit different operating frequencies:
- 0.20mm: High-frequency drone motors (40 kHz PWM) – optimal efficiency
- 0.27mm: Mid-frequency applications, cost-performance balance
- 0.35mm: Standard industrial motors, lower operating frequencies
- 0.50mm: Low-frequency, cost-sensitive applications
Technical Specifications & Verified Data
All performance data below is derived from Reenives in-house laboratory testing (IEC 60404-2), third-party validation, and industry standards for CRNGO electrical steel.
| Parameter | Value / Range (Reenives Standard) | Test Standard / Source |
|---|---|---|
| Material Type | CRNGO (Cold-Rolled Non-Grain Oriented) / Non-oriented silicon steel | Material certificates / IEC 60404 |
| Common Grades | 35PN210, 50A470, 50A600 (Nippon Steel / Baowu) | Material certificates |
| Lamination Thickness | 0.20mm / 0.27mm / 0.35mm / 0.50mm (customizable) | Micrometer / IEC 60404-2 |
| Core Loss @ 1.0T, 400Hz (0.20mm) | ≤ 8.5 W/kg — 30% lower than 0.35mm | IEC 60404-2 / Reenives R&D |
| Saturation Flux Density Bs | 1.68 – 1.72 T (isotropic) | Epstein frame test |
| Burr Height (max) | < 0.03mm | Optical measurement |
| Epoxy Coating Thickness | 30–60 µm, dielectric > 2.5 kV | ASTM D149 |
| Stacking Factor | ≥ 97.5% | Weight method |
| Stamping Tolerance | ±0.02mm – ±0.05mm | CMM / optical comparator |
| Slot/Pole Configurations | 9N12P, 12N14P, 24N22P, custom | Reenives design standards |
| Typical Motor Efficiency | 90–95% (with optimized CRNGO stamping) | IEEE Xplore / FEM simulation |
🔬 Data Source: Reenives R&D Report 2024-Q4 + IEC 60404-2 standard + Material certificates + IEEE Xplore motor studies.
Applications: Drone Motors, UAV, Industrial & More
CRNGO stampings are the most widely used material for motor cores across a broad range of applications :
| Application | Typical Motor Size | CRNGO Requirements | Performance Priorities |
|---|---|---|---|
| FPV Racing Drones | 22–30mm stators | 0.20mm, high grade, low core loss | High RPM, rapid acceleration, efficiency |
| Logistics & Delivery Drones | 30–50mm stators | 0.20–0.27mm, good efficiency | Long flight time, payload capacity |
| Agriculture UAVs | 40–60mm stators | 0.27mm, corrosion-resistant coating | Heavy payload, durability, dust resistance |
| Industrial BLDC Motors | Various | 0.35mm, cost-effective | Reliability, thermal stability, cost |
| Servo & Stepper Motors | Various | 0.27–0.35mm, precision stamping | Precision control, low cogging |
| Automotive Auxiliary Motors | Various | 0.35mm, high reliability | Durability, thermal stability, cost |
"CRNGO stamping is the backbone of the electric motor industry—from drone propulsion to industrial automation—delivering an optimal balance of magnetic performance and cost."
6-Step Engineering Selection Guide for CRNGO Stamping
For procurement engineers and motor designers, selecting the optimal CRNGO stator stamping solution requires systematic evaluation. Here is a practical 6-step framework:
- Define Motor Class & Operating Frequency – Identify your motor's PWM frequency:
- High frequency (up to 40 kHz): Drone motors, high-speed BLDC
- Mid frequency (10–20 kHz): General industrial BLDC
- Low frequency (50–400 Hz): Traditional motors, pumps
- Select Lamination Thickness – Thinner laminations reduce core loss at higher frequencies:
- 0.20mm: High-frequency drone motors, optimal efficiency
- 0.27mm: Mid-frequency applications, cost-performance balance
- 0.35mm: Standard industrial motors, cost-effective
- 0.50mm: Low-frequency, cost-sensitive applications
ⓘ "0.20mm CRNGO reduces core loss by approximately 30% compared to 0.35mm at 400Hz—translating to longer flight times and cooler motors."
- Choose CRNGO Grade – Higher grades offer lower core loss:
- 35PN210: Premium grade for drone motors (P1.0/400 ≤ 8.5 W/kg)
- 50A470: Standard industrial grade
- 50A600: Cost-effective general purpose
- Verify material certificates from Nippon Steel / Baowu
- Define Slot/Pole Configuration – Match to motor characteristics:
- 9N12P: Most common for FPV and racing drones
- 12N14P: Higher torque density for larger drones
- 24N22P: Heavy-lift and industrial applications
- Specify Insulation & Coating – Critical for motor reliability:
- Epoxy powder coating (30–60µm, Class H 180°C)
- Corrosion resistance for outdoor and agriculture applications
- Dielectric strength > 2.5 kV for reliable insulation
- Choose a Specialist CRNGO Stamping Supplier – Evaluate expertise:
- Experience with CRNGO stator stamping for drone and BLDC motors
- Multiple thickness capability (0.20–0.50mm)
- Precision stamping: burr < 0.03mm, tight tolerances
- Epoxy coating capability for motor environments
- Material certificates and third-party test reports
- Proven track record with motor manufacturers
- Engineering support for CRNGO motor optimization
FAQ: CRNGO Stamping Technical Questions
CRNGO stamping is the precision stamping of Cold-Rolled Non-Grain Oriented (CRNGO) electrical steel into laminations for motor cores. CRNGO is used for drone motor stators because it has isotropic magnetic properties—meaning consistent performance in all directions—which is essential for rotating machines where magnetic flux changes direction continuously. CRNGO also provides an optimal balance of magnetic performance and cost, making it the industry standard for drone motors, UAV propulsion, and industrial BLDC applications .
CRNGO (Cold-Rolled Non-Grain Oriented) steel has isotropic magnetic properties—magnetic performance is consistent in all directions. It is ideal for rotating machines like motors and generators where magnetic flux direction changes continuously . CRGO (Cold-Rolled Grain Oriented) steel has anisotropic properties—maximum magnetic performance in one direction only. CRGO is used for transformers where magnetic flux flows in a single direction. For drone motors and BLDC applications, CRNGO is the standard choice .
For drone motors operating at high frequencies (up to 40 kHz PWM), 0.20mm CRNGO is optimal. It achieves core loss ≤ 8.5 W/kg at 400Hz—approximately 30% lower than 0.35mm material—delivering longer flight times and cooler operation. For standard industrial BLDC motors, 0.27mm or 0.35mm CRNGO provides a cost-effective balance of performance and cost .
CRNGO stamping is cost-effective for several reasons: (1) CRNGO steel is widely available and produced in high volumes, (2) the manufacturing process for non-oriented steel is less complex than grain-oriented steel, (3) CRNGO can be stamped with high efficiency using progressive dies, and (4) it eliminates the need for specialized handling associated with grain-oriented materials. This makes CRNGO the preferred choice for high-volume drone motor and BLDC production .
With high-quality progressive stamping tooling, CRNGO stator laminations can achieve: (1) dimensional tolerance of ±0.02mm to ±0.05mm, (2) burr height below 0.03mm to protect winding insulation, (3) consistent lamination geometry across high-volume production, and (4) stacking factor ≥ 97.5%. Reenives maintains these precision standards through regular die maintenance and quality control inspection .
Yes. Epoxy powder coating provides three critical functions for CRNGO stator stampings: (1) electrical insulation between laminations to minimize eddy currents, (2) corrosion resistance for outdoor, humid, or agriculture applications, and (3) thermal durability up to 180°C (Class H) for high-power operation. The coating thickness (30–60µm) is optimized with dielectric strength exceeding 2.5 kV .
Yes. Reenives supports full customization of CRNGO stator stampings including: lamination thickness (0.20–0.50mm), material grade (35PN210, 50A470, 50A600, etc.), outer diameter, slot/pole configurations (9N12P, 12N14P, 24N22P, custom), stacking height, and epoxy coating specifications. Private mould development is available for high-volume OEM projects with exclusive design rights—from micro racing drones to large industrial motors .
Why Reenives – Drone Motor Stator CRNGO Stamping Supplier
Reenives has earned its reputation as a specialist Drone Motor Stator CRNGO Stamping Supplier by combining advanced stamping technology with deep expertise in CRNGO material properties and motor applications.
Our Advantages — CRNGO Stamping Specialists
- ✅ Multi-Thickness Capability: 0.20mm, 0.27mm, 0.35mm, 0.50mm—optimize cost and performance
- ✅ Premium CRNGO Grades: 35PN210, 50A470, 50A600—verified material certificates
- ✅ Precision Progressive Stamping: Burr height < 0.03mm, tight tolerances (±0.02mm)
- ✅ Drone-Optimized Configurations: 9N12P, 12N14P, 24N22P, and custom designs
- ✅ Epoxy Coating: 30–60µm, Class H 180°C, dielectric > 2.5 kV
- ✅ Cost-Effective Solutions: CRNGO delivers optimal magnetic performance at competitive cost
- ✅ Full Customization: Private mould development for exclusive designs
- ✅ Trusted Quality Control: IEC 60404-2 testing, material certificates, third-party verification
- ✅ Global Export: Complete export qualifications with worldwide shipping
- ✅ Proven Track Record: 4 years experience, 1,000+ enterprise clients, 100+ R&D patents
🔧 Our CRNGO stamping promise: Laminations that deliver optimal efficiency at competitive cost. Consistent quality that eliminates rework. Engineering support that optimizes your motor design. That's why Reenives is the trusted drone motor stator CRNGO stamping supplier.
⚡ Ready to optimize your motor performance with precision CRNGO stampings?
Contact Reenives today for engineering consultation, OEM samples, and competitive bulk pricing.
📱 WhatsApp: +86-13377741885
Dongguan Runlu Motor Technology Co., Ltd.
Reenives — Professional Drone Stator Core Manufacturer
Founded in 2022, Reenives has rapidly grown into a trusted CRNGO stator stamping supplier for the global UAV, EV, robotics, and industrial motor markets.
Independent R&D Technology · Imported stamping & epoxy powder coating production lines · Dust-free workshops · 4 years of manufacturing experience · Solved CRNGO stamping challenges for 1,000+ enterprises worldwide.
From production to sales, we support bulk purchasing, private mould development, and sample making. We provide tailor-made solutions for your specific motor production scenarios—with competitive pricing, consistent quality, and reliable on-time delivery.
🌐 www.reenives-bldcmotor.com | 📧 linda_reenives@163.com | 📱 +86-13377741885
✈️ Global customers welcome — consult, visit the factory, or request free samples today!
Reenives — Drone Motor Stator CRNGO Stamping Supplier
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