Product Introduction
The 4-72A Industrial Centrifugal Fan is a reliable and energy-efficient fan designed for medium to large industrial and commercial applications. With its advanced impeller and casing design, this fan delivers large air volume, low noise, and stable performance, making it a trusted solution for industries requiring continuous and effective ventilation.
Usage Industries:
- Environmental protection equipment
- Food processing machinery
- Printing industry
- Pharmaceutical machinery
- Drying equipment
- Ceramic machinery
Application Environments:
- Large factories and workshops
- Shopping malls
- Civil buildings
- Power plants
- Air treatment and circulation systems
Gas Medium:
- Non-flammable, non-explosive, non-corrosive gases
- Dust content ≤ 150mg/m³
- Temperature range: 50–80°C
Features & Construction
- Impeller:
- Made of 10 carbon steel forward-curved blades
- One-piece molded with front cover
- Balanced and calibrated for vibration-free operation
- Casing:
- Welded into a volute shape
- Compact, corrosion-resistant, and heat-resistant
- Saves installation space
- Air Inlet:
- Carbon steel convergent streamline design
- Fixed on front cover with bolts
- Ensures smooth airflow with minimal loss
- Frame & Motor:
- Available in B3 / B35 frame models
- Equipped with a direct-connected pure copper motor for efficiency and durability
Types & Parameters
| Type | Machine Numbers | Rotation | Outlet Position | Transmission Mode |
|---|---|---|---|---|
| Type A | No. 2.5, 2.8, 3.2, 3.6, 4, 4.5, 5, 5.6, 6, 6.3, 7.1 | Right-handed (clockwise) / Left-handed (counterclockwise) | Adjustable 0° to 225° (intervals: 22.5° or 45°) | Type A |
| Type D | No. 6, 8, 10, 12 | Right-handed (clockwise) / Left-handed (counterclockwise) | Adjustable 0° to 225° (intervals: 22.5° or 45°) | Type D |
| Model | Speed (r/min) | Power (kW-P) | Traffic (m³/h) | Total Pressure (Pa) |
|---|---|---|---|---|
| 2.5A | 2900 | 0.75-2 | 800-1650 | 790-485 |
| 2.8A | 2900 | 1.5-2 | 1131-2356 | 994-606 |
| 3.2A | 2900 | 2.2-4 | 1688-3157 | 1300-792 |
| 3.2A | 1450 | 1.1-4 | 844-1758 | 324-198 |
| 3.6A | 2900 | 3-7.5 | 2664-5268 | 1578-989 |
| 3.6A | 1450 | 1.1-4 | 1332-2634 | 393-247 |
| 4A | 2900 | 5.5-11 | 4012-7419 | 2014-1320 |
| 4A | 1450 | 1.5-4 | 2006-3709 | 501-329 |
| 4.5A | 2900 | 7.5-15 | 5712-10562 | 2554-1673 |
| 4.5A | 1450 | 1.1-4 | 2856-5281 | 634-416 |
| 5A | 2900 | 11-22 | 7728-15455 | 3187-2019 |
| 5A | 1450 | 2.2-7.5 | 3864-7728 | 790-502 |
| 5.6A | 2900 | 15-30 | 10122-25736 | 4152-2530 |
| 5.6A | 1450 | 3-11 | 7062-9885 | 957-759 |
| 6A | 2900 | 22-45 | 16677-33353 | 5592-3420 |
| 6A | 1450 | 5.5-4 | 6677-13535 | 1247-968 |
| 7.1A | 1450 | 11-4 | 10110-15810 | 1572-1168 |
| 7.1A | 960 | 3-6 | 8392-13581 | 689-512 |
Technical Specifications
| Specification | Details |
|---|---|
| Material | Carbon steel (impeller & casing), optional stainless steel |
| Traffic / Application | Factories, malls, civil buildings, power plants, air treatment, hot air circulation |
| Power | Direct-connected motor (B3 / B35), varies by machine number |
| Air-flow | Large volume, stable airflow |
| Noise Level | Low noise, vibration-free operation |
| Size / Dimensions | Machine No. 2.5 – 12 |
| Motor | Pure copper, balanced & calibrated |
| Warranty | 12 months (extendable as per company policy) |
| Color | Industrial Grey (customizable) |
| Voltage | 220V / 380V, 50Hz |
| RPM | 1450 – 2900 RPM (depending on model) |
Key Benefits
- High efficiency with large airflow capacity
- Low operational noise, suitable for industrial & commercial setups
- Compact design, easy installation in limited spaces
- Flexible outlet angle adjustment (0°–225°)
- Durable and corrosion-resistant materials
- Reliable motor performance for continuous operation