Core Product Information
Material: SOMALOY 700HR-3P (high-performance soft magnetic composite)
Process: Powder metallurgy compaction + sintering + precision post-processing
Structure: Ring-shaped toothed stator core, suitable for axial-flux / high-efficiency air conditioner motors
Advantages: 3D magnetic circuit design, low eddy current loss, high magnetic permeability, lightweight
Key Product Features
High Efficiency & Energy Saving: SOMALOY 700HR-3P exhibits extremely low eddy current loss under high-frequency conditions, significantly improving motor efficiency and enabling air conditioners to achieve lower energy consumption.
Precise Fit: Customized exclusively for Midea air conditioner motors, with strict control over dimensional tolerances and assembly accuracy to ensure perfect compatibility with motor windings and housings.
Stability & Reliability: The powder metallurgy process ensures uniform material structure and consistent magnetic performance, maintaining stability during long-term high-temperature and high-load operation.
Lightweight Design: Compared to traditional silicon steel cores, SMC stator cores are lighter, effectively reducing overall motor weight and improving system responsiveness.
Technical Parameters
Material & Physical Properties
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Parameter
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Specification
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|
Material Grade
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SOMALOY 700HR-3P
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Density
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≥6.5 g/cm³
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|
Electrical Resistivity
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≥80 μΩ·cm
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|
Hardness
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≥180 HV
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Bending Strength
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≥400 MPa
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|
Coefficient of Thermal Expansion
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12×10⁻⁶ /℃ (20–100℃)
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Magnetic Performance
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Parameter
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Specification
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|
Saturation Magnetic Induction
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≥1.5 T
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|
Initial Permeability
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≥300 μ₀
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|
Maximum Permeability
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≥1000 μ₀
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Coercivity
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≤20 A/m
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|
Core Loss (1.0T/50Hz)
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≤1.5 W/kg
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|
Core Loss (1.0T/400Hz)
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≤12 W/kg
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Environmental & Reliability
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Parameter
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Specification
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|
Operating Temperature Range
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-40℃ ~ 180℃
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|
Dielectric Withstand Voltage
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≥500 VAC (1min)
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Corrosion Resistance
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No significant rust after 48h neutral salt spray test
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Thermal Shock Resistance
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No cracking after 10 cycles between 150℃ and room temperature
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Dimensions & Tolerances (Model: L1C10000557A-001A)
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Parameter
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Specification
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|
Outer Diameter
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Φ100.0 ±0.1 mm
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Inner Diameter
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Φ65.0 ±0.1 mm
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|
Thickness
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10.0 ±0.05 mm
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|
Number of Teeth
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18
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Tooth Profile Tolerance
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±0.03 mm
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|
Flatness
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≤0.05 mm
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Parallelism
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≤0.03 mm
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Process Advantages
Powder Metallurgy Forming: Complex tooth structures are formed in a single press operation, eliminating the need for extensive post-machining and improving production efficiency.
Insulated Coating: The insulation layer between iron powder particles effectively blocks eddy currents, significantly reducing high-frequency losses.
Precision Post-Processing: Strict control over tooth profile accuracy, flatness, and dimensional tolerances ensures precise motor assembly.
Application Scenarios
Household Inverter Air Conditioner Motors
Suitable for indoor/outdoor drive motors in Midea's full range of household inverter air conditioners, especially outstanding in models of 1.5 HP and above.
Enables rapid cooling/heating and low-noise operation while meeting the new national Class I energy efficiency standards.
Commercial Central Air Conditioner Fan Motors
Applied in fan motors of Midea's commercial multi-split systems and ducted air conditioners, maintaining high efficiency and stability during long-term continuous operation.
Reduces overall energy consumption of air conditioning systems, improving the economic and environmental performance of building HVAC systems.
Fresh Air Systems & Air Purification Equipment
Adapts to drive motors in Midea's fresh air systems and air purifiers, providing stable magnetic circuit support under low-speed, high-torque requirements.
Ensures quiet and efficient performance during air purification and circulation.
Smart Home Appliance Drive Motors
Can be extended to high-efficiency motors in other Midea smart home appliances (e.g., dehumidifiers, portable air conditioners), providing lightweight, high-efficiency core magnetic components.
Application Value
Air Conditioner Motor Upgrade: Helps Midea air conditioner motors achieve higher energy efficiency levels and meet national energy-saving standards.
Quiet Operation: Low magnetostriction and uniform magnetic circuit design effectively reduce motor operating noise.
Long Lifespan: Excellent aging and fatigue resistance extend the service life of air conditioner motors.
Packaging & Delivery
Packaging: Moisture-proof and rust-proof independent packaging to avoid bumps and oxidation during transportation.
Delivery Cycle: Flexible production scheduling based on order requirements, supporting stable batch supply.
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