Product Advantage
High Air Volume & Gentle Airflow: The forward-curved blade design (16 curved blades) maximizes air capture, achieving an airflow efficiency of ≥75%—10% higher than flat-blade centrifugal options. Its low static pressure (120-200 Pa) produces gentle airflow, avoiding damage to fragile items (e.g., fresh produce in refrigerators) while still ensuring effective ventilation.
Food-Grade Safety & Durability: Made of FDA-approved PP material with mineral fiber reinforcement, it is non-toxic, odorless, and resistant to weak acids/alkalis. It passes 400 hours of food contact testing (FDA 21 CFR Part 177) and retains 90% of its mechanical properties after 3 years of use in refrigerated environments (-10℃), avoiding brittleness or material degradation.
Energy-Efficient Operation: When matched with a 0.55kW motor, it consumes only 0.45 kWh per hour—25% less energy than traditional metal centrifugal blades. For a 500㎡ food warehouse with 10 fans, this translates to annual electricity savings of approximately $1,200, aligning with cost-saving and sustainability goals.
Easy Cleaning & Maintenance: The smooth PP surface prevents dust and debris buildup, and it can be disassembled and cleaned with water (or neutral detergent) without rusting—critical for hygiene-sensitive areas like food storage. Its lightweight design (net weight: 0.8kg) allows quick on-site replacement without specialized tools.
Broad Compatibility & Customization: Equipped with a 14mm inner bore and a friction-fit hub, it fits most 0.37-0.75kW single-phase AC motors. It supports color customization (e.g., white for cleanrooms, blue for refrigeration units) and blade thickness adjustments (2-3mm) to adapt to different airflow demands.
Technical Parameters
Parameter | Specification | Unit | Test Standard |
Material | 15% Mineral Fiber-Reinforced Food-Grade PP | - | FDA 21 CFR Part 177 |
Blade Structure | Forward-Curved | - | ISO 13349 |
Number of Blades | 16 | Pcs | - |
Outer Diameter | 280 | mm | ISO 13349 |
Inner Bore Diameter | 14 | mm | - |
Rated Speed | 1800 | RPM | IEC 60034-1 |
Air Volume Range | 600-1000 | m³/h | AMCA 210 |
Static Pressure | 120-200 | Pa | AMCA 210 |
Operating Temperature Range | -10 ~ 60 | ℃ | ISO 75-2 |
Tensile Strength | ≥35 | MPa | ISO 527-1 |
Impact Strength (Izod, Unnotched) | ≥25 | kJ/m² | ISO 180 |
Food Contact Compliance | Pass | - | FDA 21 CFR Part 177 |
Net Weight | 0.8 ± 0.05 | kg | - |
Product Uses
1. Commercial Refrigeration Systems: Installed in walk-in freezers and cold storage warehouses for food, pharmaceuticals, and cosmetics. The gentle airflow circulates cold air evenly, maintaining a consistent temperature (0℃ to -5℃) and reducing food spoilage by 15% compared to unevenly ventilated spaces.
2. Indoor Air Purification: Integrated into large-scale air purifiers for offices, schools, and hospitals. The high air volume ensures efficient circulation of filtered air, removing 90% of airborne particles (e.g., dust, pollen) within 30 minutes, improving indoor air quality to meet WHO standards.
3. Light Industrial Workshop Ventilation: Used in exhaust fans for small-scale plastic molding and printing workshops. It extracts low-concentration fumes (e.g., plastic vapors) and circulates fresh air, reducing worker exposure to harmful substances and complying with occupational health regulations (e.g., OSHA indoor air standards).
4. Agricultural Produce Storage: Applied to ventilation fans in fruit and vegetable storage facilities. The non-toxic PP material avoids chemical contamination of produce, while the gentle airflow prevents moisture buildup—extending the shelf life of fruits like apples and tomatoes by 2-3 weeks.
Product Operate Guide
Pre-Installation Preparation: Confirm the blade’s bore size and motor compatibility. For refrigeration use, check that the PP material is free of cracks (low temperatures can exacerbate defects). Clean the motor shaft with a dry cloth to remove frost or oil, then apply a thin layer of food-grade lubricant (if used in food environments).
Installation Steps: Slide the blade’s friction-fit hub onto the motor shaft until it sits firmly against the positioning ring. Rotate the blade slightly to ensure a tight fit—no set screws are needed, avoiding metal contamination risks in food areas. For purifier use, align the blade with the fan’s air inlet to maximize airflow capture.
Post-Installation Inspection: Manually rotate the blade to ensure no contact with the fan housing (clearance ≥4mm). Run the fan at full speed for 8 minutes; if abnormal noise occurs, stop and recheck the hub fit—loose connections can cause airflow inconsistency.
Maintenance Tips: For refrigeration use, defrost the blade monthly to remove ice buildup (use warm water, not sharp tools). For air purifiers, clean the blade every 2 weeks with a damp cloth. Replace the blade every 4 years or if cracks appear.
FAQ
1. Q: Can this blade be used in high-humidity environments (e.g., commercial dishwashers)?
A: Yes, the PP material is highly moisture-resistant. However, we recommend adding a corrosion-resistant motor (e.g., IP54-rated) to prevent motor damage from water vapor—contact us for compatible motor recommendations.
2. Q: What’s the lead time for blades with thicker material (e.g., 3mm for heavy-duty use)?
A: Standard 2mm-thick blades have a 3-5 working day lead time. Thicker 3mm blades require 7-9 working days, including material adjustment and structural testing to ensure airflow efficiency is not affected.
3. Q: How to resolve reduced airflow in refrigerated environments?
A: First, remove ice buildup on the blade (use warm water or a defrosting agent). If airflow remains low, check if the blade hub has loosened due to temperature changes—reposition and rotate the blade to resecure the friction fit.
4. Q: What’s the warranty period, and does it cover use in food environments?
A: We provide a 2-year warranty for material defects (e.g., cracking, brittleness) and safety compliance issues. The warranty covers use in food environments, and we offer free replacement if the blade fails FDA compliance testing during the period.
5. Q: Is the blade compatible with three-phase motors?
A: Yes, it works with 0.37-0.75kW three-phase motors (1800 RPM) with a 14mm shaft. For three-phase use, we recommend adding a dynamic balance check (included free for orders over 100 blades) to ensure stable operation.
