What are the key performance features of LONGWELL aluminum cross flow impellers?
LONGWELL cross flow impellers are engineered for low noise, high air quantity, excellent dynamic balance, high tensile strength, and lightweight construction. Our aluminum alloy plate construction ensures durability while maintaining the precision required for uniform airflow across the entire length of the wheel. These features make them ideal for high-demand commercial and industrial HVAC applications.
What diameters and standard lengths are available, and do you accept custom length orders?
We offer a comprehensive range of wheel diameters from 30mm to 150mm. Standard lengths vary by diameter, ranging from 115mm up to 1050mm (e.g., 60mm offers lengths from 120mm to 480mm; 100mm offers lengths from 360mm to 1000mm). Yes, we fully support custom length requirements. For wholesale and OEM clients, we can cut the impeller to precise millimeter specifications to meet your exact assembly needs.
What material is used for the impeller blades and what are the benefits for B2B buyers?
All impellers are manufactured using Aluminum Alloy Plate. This material provides an excellent strength-to-weight ratio, reduces rotational inertia, and resists corrosion. For B2B buyers integrating these into appliances or air curtains, this translates to longer motor lifespan and reduced shipping weight compared to steel alternatives.
How does LONGWELL ensure dynamic balance and low noise in mass production?
As a professional HVAC fan and motor manufacturer, we adhere to strict quality control standards. Each impeller undergoes precision dynamic balancing to meet G6.3 or higher balancing grades (customizable upon request). The specific blade count design (ranging from 20 blades on 30mm to 50 blades on 150mm) is optimized to minimize air turbulence, ensuring consistent low-noise operation across bulk orders.
What are the typical industrial applications for these cross flow impellers?
Based on our catalog specifications, LONGWELL impellers are widely used in: Electrical Fireplaces, Air Curtains/Air Doors, Microwave Ovens, Dishwashers, Vehicle Air-Conditioning, Ground Heating Systems, and Electronic Cooling Units. Their wide diameter range (30mm – 150mm) covers everything from compact kitchen appliances to large-scale commercial air doors.
What is the Minimum Order Quantity (MOQ) for customized cross flow fans, and do you provide samples?
Our MOQ is flexible to support both medium and large-scale procurement. Standard sizes typically have a low MOQ, while fully customized diameters/shafts may require a negotiation based on tooling setup. We do provide samples for functional testing and fitment verification; sample lead time is generally 5-7 days depending on the complexity of the specifications.
What is the typical production lead time for a bulk wholesale order?
For standard sizes and lengths listed in our specification table, production lead time is approximately 15-20 days after order confirmation. For custom lengths or special end ring modifications, please allow 20-30 days. We maintain a large inventory of aluminum alloy plate raw material to accommodate urgent bulk demands from OEM clients.
Do you offer OEM/ODM services for cross flow impellers (shaft, blade count, end rings)?
Absolutely. LONGWELL specializes in OEM/ODM solutions for B2B clients. We can customize: Shaft Diameter & Material: Matching your motor specifications. Blade Count: Adjusting number of blades for specific pressure/flow curves (as referenced in our catalog, from 20 up to 50 blades). End Rings & Flanges: Custom injection molded or aluminum end rings for specific housing mounts. Simply provide your drawings or required parameters, and our engineering team will provide a tailored solution for you
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