Product Advantage
Optimized for Water-Cooled Motor Heat Dissipation: The aluminum alloy’s high thermal conductivity (160-180W/(m·K)) and extruded integrated cooling channels (spiral/parallel designs) enable efficient heat transfer from motor windings to the coolant. For a 20kW water-cooled EV drive motor, this reduces winding temperature by 25-30℃ vs. air-cooled shells, cutting coolant flow demand by 15% and extending motor service life by 4-6 years.
Pressure-Resistant & Leak-Proof Design: CNC-machined water inlet/outlet ports (M10-M16 threads) and precision-sealed joints (compatible with EPDM rubber gaskets) ensure the shell withstands coolant pressures up to 0.8MPa—no leakage even after 5000 hours of continuous operation. This meets industrial water-cooling system standards (e.g., ISO 10489), avoiding coolant loss and motor damage.
Lightweight & Energy-Saving for Water-Cooled Systems: At 2.7g/cm³ density, the aluminum shell is 65% lighter than cast iron water-cooled shells. For EVs with dual water-cooled drive motors, this reduces vehicle curb weight by 100-160kg, improving EV range by 8-12km per charge. For industrial water-cooled motors, lighter shells also lower the load on mounting brackets, reducing maintenance costs by 20%.
High Customization for Diverse Water-Cooling Needs: Supports tailored cooling channel designs—spiral channels for uniform heat distribution (ideal for high-torque motors) and parallel channels for low-flow resistance (suitable for compact motors). Custom cutouts for temperature sensors (to monitor coolant/motor temperature) and wiring ports ensure seamless integration with water-cooling control systems, with dimensional tolerance of ±0.03mm.
Corrosion Resistance for Coolant Environments: The 15-20μm hard anodized surface (or PVDF coating) resists chemical corrosion from industrial coolants (e.g., ethylene glycol mixtures) and road salt (for EVs), withstanding 1200 hours of neutral salt spray testing (ASTM B117). Unlike uncoated aluminum, it won’t develop scale or rust in long-term coolant contact, maintaining cooling efficiency.
Technical Parameters
Parameter | Specification | Unit | Test Standard |
Material | 6063-T5, 6061-T6 Aluminum Alloy | - | ASTM B221 |
Cross-Section Type | Cylindrical (spiral channels), Square (parallel channels) | - | Customer Requirement |
Length (Customizable) | 150 - 800 | mm | GB/T 6892 |
Wall Thickness | 2 - 5 | mm | IEC 60034-5 |
Inner Diameter (Cylindrical) | 60 - 350 | mm | Customer Requirement |
Cooling Channel Design | Spiral (3-8 turns) / Parallel (4-12 channels) | - | Internal Cooling Standard |
Coolant Pressure Resistance | ≤0.8 | MPa | ISO 10489 |
Surface Treatment | Hard Anodizing (15-20μm), PVDF Coating (60-80μm) | - | ASTM B928 |
Surface Hardness (Anodized) | ≥280 | HV | ASTM E384 |
Tensile Strength (6063-T5) | ≥210 | MPa | ASTM B557 |
Tensile Strength (6061-T6) | ≥276 | MPa | ASTM B557 |
Thermal Conductivity | 160 - 180 | W/(m·K) | ASTM E1461 |
Corrosion Resistance | ≥1200 | Hours (Salt Spray Test) | ASTM B117 |
Compatible Motor Type | Water-Cooled Industrial Motors, EV Drive Motors | - | IEC 60034 |
Compatible Coolants | Ethylene Glycol, Water-Glycol Mixtures | - | Industrial Standard |
Operating Temperature Range | -40 ~ 130 | ℃ | GB/T 3194 |
Product Uses
1. EV Water-Cooled Drive Motors: Cylindrical 6061-T6 aluminum shells with spiral cooling channels house 10-50kW EV drive motors. The pressure-resistant design (0.8MPa) handles vehicle coolant systems, while lightweight properties reduce EV weight—ideal for electric cars, buses, and trucks.
2. Industrial Water-Cooled Servo Motors: Square 6063-T5 shells with parallel cooling channels are used in 5-20kW servo motors for CNC machines and robotic arms. Integrated temperature sensor cutouts monitor motor heat, ensuring stable performance during 24/7 high-load machining.
3. Water-Cooled HVAC Motors: PVDF-coated aluminum shells with IP65 protection fit 3-15kW water-cooled HVAC fan motors. The corrosion-resistant surface resists humid indoor/outdoor environments, and sealed coolant ports prevent leakage—suitable for commercial air conditioners and large ventilation systems.
4. Water-Cooled Pump Motors: Reinforced 6061-T6 shells with thickened walls (5mm) house 2-10kW water-cooled pump motors in factories. The high-pressure resistance (0.8MPa) withstands industrial coolant circulation, and the smooth inner surface reduces coolant flow resistance—cutting pump energy consumption by 10%.
Product Operate Guide
Pre-Assembly Prep: Confirm the shell’s cooling channel design, inlet/outlet size, and pressure rating match the water-cooled motor’s coolant system. Clean the shell’s cooling channels with deionized water to remove debris—critical for unobstructed coolant flow.
Assembly Steps: Insert the water-cooled motor stator/rotor into the shell, aligning the motor’s heat-generating parts with the cooling channels. Secure end caps with M4-M6 screws (torque 5-10N·m) and install EPDM gaskets at coolant ports. Connect the shell to the coolant circuit, ensuring no leaks (test with 1.2× rated pressure for 30 minutes).
Post-Assembly Check: Run the water-cooled motor for 1 hour, using a thermal sensor to verify winding temperature (≤75℃ for industrial motors). Inspect coolant ports and joints for leakage—tighten connections if needed.
Maintenance Tips: Flush the shell’s cooling channels with coolant cleaner every 6 months to remove scale. Inspect the anodized surface quarterly—touch up scratches with anti-corrosion paint to avoid coolant-induced rust.
FAQ
1. Q: Can the shell be customized for high-pressure coolant systems (e.g., 1.2MPa)?
A: Yes. We offer a high-pressure version with 7075-T6 alloy and reinforced walls (6mm), which withstands up to 1.5MPa. Lead time is 10-12 working days.
2. Q: What’s the MOQ for custom cooling channel designs?
A: MOQ is 100 pieces for unique cooling channels (e.g., multi-path spiral). Standard designs have no MOQ and ship in 3-5 days.
3. Q: How to fix blocked cooling channels in the shell?
A: Use a low-pressure air gun (≤0.3MPa) to blow debris from channels. For tough scale, use industrial coolant descaling solution—our team provides a step-by-step cleaning guide....
