The Kyungjin Blower Model ASF-804 S-Blade Industrial Axial Fan, engineered and manufactured by Kyungjin Blower Co., Ltd. in South Korea, is a heavy-duty air movement and thermal ventilation solution designed to meet demanding industrial airflow requirements.

Aerodynamic S-Blade Engineering Advantages:
Unlike traditional industrial exhaust fans fitted with standard flat or angled sheet blades that generate severe tip turbulence, stall vortices, and deafening air shearing noise, the Kyungjin ASF Series utilizes an advanced CFD-engineered S-curved aerofoil profile:
- Maximized Air Volume & Pressure Performance: The fluid S-curve geometry allows the blades to scoop and displace dense volumes of air smoothly, maintaining high displacement velocity even against modest outdoor backpressures.
- Acoustic Vortex Suppression: Air streamlines flow across the curved S-blade surfaces without separating prematurely, virtually eliminating turbulence rumble and air chattering.
- Precision Dynamic Balancing: Every impeller assembly undergoes dual-plane electronic dynamic balancing to eliminate mechanical shaft vibration, protecting the motor bearings and ensuring whisper-smooth continuous operation.

Model Code Breakdown & Configuration (ASF-804):
- ASF: Axial S-Blade Fan series (High-efficiency industrial axial wall/duct fan).
- 80: Nominal dimensional frame designation (800 mm frame size).
- 4: 4-Pole industrial motor drive (operating at approximately 1400 to 1750 RPM), delivering the optimal balance between high volumetric delivery and low acoustic emission.

Heavy-Duty Industrial Construction:
- Both the outer mounting housing and the fan impellers are stamped from premium-grade cold-rolled structural steel, pretreated, and coated with an electrostatically applied high-temperature powder bake finish. This provides superior resistance to corrosion, ambient moisture, industrial dust, and chemical vapors.
- Powered by a heavy-duty continuous-duty industrial motor featuring Class F insulation, moisture-resistant windings, and 100% pure copper coils, engineered for uninterrupted 24/7 industrial duty.
- Standard square or flanged frame configuration with pre-punched mounting holes enables simple wall-mounting, window framing, or duct transition installation.

Target Industrial Sectors & Applications:
- Manufacturing & Assembly Plants: General factory cooling and air scavenging in garment workshops, automotive assembly bays, plastic molding shops, and metal stamping lines.
- Intensive Livestock & Agriculture: Negative-pressure tunnel ventilation in poultry layer/broiler houses and swine breeding facilities paired with evaporative cooling pads; environmental humidity control in commercial hydroponic greenhouses.
- Warehousing & Logistics: Air destratification and moisture control in large-scale e-commerce fulfillment hubs and dry storage facilities.
- Commercial MEP Infrastructure: Mechanical ventilation in electrical transformer vaults, emergency generator rooms, and underground parking structures.

• Manufacturer: Kyungjin Blower (Kyungjin Blower Co., Ltd.)
• Country of Origin: 100% South Korea (Made in Korea)
• Product Line: S-Blade Industrial Axial Ventilation Fans
• Model Designation: ASF-804
• Impeller Profile: Aerodynamically engineered S-Curved Blades (S-Blade configuration)
• Motor Poles: 4-Pole industrial motor (4P)
• Operating Speed: ~1400 to 1750 RPM (50Hz / 60Hz grid dependent)
• Electrical Power Supply: Available in 1-Phase 220 VAC or 3-Phase 380 VAC, 50/60 Hz
• Nominal Frame Dimension: 800 mm size (Series 80)
• Housing & Impeller Metallurgy: High-grade stamped steel finished with protective industrial powder coating
• Balancing Standard: Dual-plane electronic dynamic balancing
• Drive Type: Direct-drive configuration (Impeller keyed directly to motor shaft)
• Motor Insulation Class: Class F rated insulation
• Motor Ingress Protection: Industrial dust and moisture resistant enclosure
• Acoustic Profile: Low-noise operation engineered via smooth S-blade air-cleaving geometry
• Mounting Configuration: Wall-mount, panel-mount, or ventilation duct interface
• Operating Ambient Temperature Range: -10°C to +50°C
• Quality & Safety Certification: KC (Korea Certification) compliant, ISO 9001 certified manufacturing.