HKA 400M CENTRIFUGAL (C-2336)

🔹 GENERAL DESCRIPTION

The HKA Industrial Radial Fans – Backward Curved Series are heavy-duty centrifugal fans specifically engineered for industrial ventilation, air movement, and process applications requiring high efficiency, reliability, and durability.

These fans are designed with backward-curved impellers that provide superior aerodynamic performance, high static pressure, and low noise levels. The backward-curved blade profile minimizes dust accumulation and enhances efficiency compared to traditional forward-curved designs.

Constructed from robust welded steel and coated with epoxy or hot-dip galvanized protection, the HKA fans are capable of operating under harsh industrial environments and continuous duty cycles.

The fan assembly consists of a precision-balanced impeller, a heavy-duty base frame, and a TEFC motor mounted either directly on the shaft or via a belt-drive system, depending on performance requirements.

The modular and service-friendly design allows easy access to internal components for inspection and maintenance, ensuring long-term reliability and consistent performance.

Thanks to their rugged structure, energy-efficient airflow characteristics, and versatile configurations, HKA Industrial Radial Fans are widely used in factories, workshops, HVAC systems, dust extraction units, and process ventilation applications.

🧩 1. FAN COMPONENTS AND MATERIAL PROPERTIES

🏗️ 2. FAN STRUCTURE

• Centrifugal Radial Design:
  Air enters axially and is discharged radially at 90°, generating high static pressure suitable for ducted systems and industrial processes.

• Backward-Curved Impeller:
  Engineered to provide higher efficiency, lower power consumption, and reduced dust accumulation compared to forward-curved types.

• Robust Welded Construction:
  The entire fan casing and base frame are made from thick-gauge steel, ensuring mechanical strength and long operational life.

• Inspection and Maintenance Access:
  Equipped with removable inspection doors for easy cleaning and servicing.

• Flexible Installation Options:
  Can be mounted horizontally or vertically, with inlet/outlet positions adaptable to the duct layout.

🌟 3. MAIN BENEFITS

• High efficiency airflow and pressure performance due to backward-curved impeller design.

• Suitable for industrial applications requiring reliable air movement under high static pressure.

• Heavy-duty construction ensures long lifespan and resistance to mechanical stress.

• Low vibration and noise levels achieved through precision balancing.

• Self-cleaning impeller blades reduce maintenance frequency.

• Weather-resistant coating suitable for indoor or outdoor installation.

• Flexible drive configurations to suit system requirements.

• Easy integration with filters, dampers, and ducted systems.

⚙️ 4. SPEED CONTROL

• Variable Frequency Drive (VFD):
  Enables precise adjustment of fan speed and airflow, optimizing performance and energy efficiency.

• Pulley Adjustment (for Belt Drive):
  Fan speed can be manually adjusted by varying pulley diameters.

• Multi-Speed Motors (Optional):
  Available for systems requiring two or three selectable speed settings.

• Soft Starters:
  Reduce inrush current and mechanical stress during startup.

🏭 5. USAGE AREAS

HKA Industrial Radial Fans – Backward Curved Series are suitable for a wide range of heavy-duty applications, including:

• 🏭 Industrial Ventilation Systems:
  Factories, workshops, foundries, and production halls.

• 🔥 Smoke & Fume Extraction:
  Removal of hot gases, fumes, and welding exhaust.

• 🌡️ HVAC & Process Air Handling:
  Integration with ducted ventilation and air treatment systems.

• 🍽️ Commercial Kitchens & Exhaust Systems:
  High-pressure extraction of grease-laden or hot air.

• ⚙️ Dust Collection & Filtration Units:
  Ideal for conveying air in filtration and baghouse systems.

• 🧱 Boiler and Furnace Applications:
  Supply or exhaust of combustion air.

• 🚪 Paint Booths & Industrial Rooms:
  Controlled ventilation and air renewal systems.

• ⚙️ Technical Specifications

  • Voltage: 230 V

  • Frequency: 50 Hz

  • Power: 0.37 KW

  • Current: 3.4 A

  • Speed: 1390 RPM

  • Air Flow: 4000 m³/h

  • Sound Pressure Level: 34-42 dB

  • Protection Class: IP 55

  • Weight: 64 kg