7.5KW Direct-driven Air Cooling Oil-free Air Compressor
This flagship 7.5kW model is engineered for industries demanding the highest air quality standards. By integrating AIRERA’s precision 1:1 direct-drive technology, the system eliminates energy loss common in belt-driven models, ensuring highly stable and efficient power transmission. Its advanced air-cooling system, paired with a 100% oil-free design, completely eradicates the risk of oil contamination while maintaining low energy consumption and minimal maintenance costs over long-term operation. Choosing AIRERA means investing in pure compressed air that meets the most rigorous international certifications. Whether in food processing, pharmaceutical R&D, or precision electronics, its quiet yet robust performance provides a steadfast quality guarantee for your high-end production lines.
Advantages of OGFD Air Screw Compressor:
- Patented High-Efficiency Compressor Block
- Water filter
The housing is made of stainless steel, offering high filtration precision and a long service life, ensuring the system remains clean and free of impurities.
- Water Cooler
The plates are made of special 304L stainless steel, offering corrosion resistance and high heat transfer efficiency. This design minimizes pressure drop and temperature difference, ensuring the system operates under near-isothermal compression. The system features a compact design, requires less cooling water, reduces pressure loss, enhances durability, and is easy to clean and maintain.
| ITEM | UNIT | MODEL OGFD-7.5 |
|---|---|---|
| Free air delivery | m³/min | 1.2-1.0 |
| Max. working pressure | MPa | 0.7-1.0 |
| Compressor type | Water inject oil-free screw compressor | |
| Cooling type | Air cooling | |
| Driven type | Direct driven | |
| Inlet status - Temperature | ℃ | ≤55 |
| Inlet status - Pressure | MPa | Atmospheric pressure |
| Inlet status - Relative humidity | ≤90% | |
| Noise Level | dB(A) | ≤55±3 |
| Residual oil content | ppm | ≤0 |
| Drive rotor speed | rpm | 2940 |
| Compressed air outlet temperature | ℃ | Ambient temperature＋20 |
| Compressed Inlet temp. | ℃ | 2-40 |
| Cooling air flow | m³/hr | 9200 |
| Control mode | Intelligent controller | |
| Safety valve set pressure | MPa | 0.77 ~ 1.14 |
| Lubricating water volume | L | 20 |
| Compressed air outlet connection | G1 | |
| Dimension - L | mm | 1130 |
| Dimension - W | mm | 800 |
| Dimension - H | mm | 1000 |
| Net Weight | kg | 500 |
| Motor - Model | Y2132S2-2 | |
| Motor - Speed | rpm | 2940 |
| Motor - Rated Power | KW | 7.5 |
| Motor - Service factor | 1.2 | |
| Motor - Protection type | IP55 | |
| Motor - Efficiency | IE3 | |
| Motor - Startup mode | Direct starting | |
| Motor - Voltage | V | 220/440 |
| Motor - Frequency | Hz | 60 |
| Motor - Rated current | A | 24.6/12.3 |
| Motor - Weight of motor | kg | 72 |
On the contrary, it is very simple. Because there is no oil system—meaning no oil changes, oil filters, or oil separators—and the direct-drive structure eliminates belt tensioning, maintenance is minimal. Users only need to periodically clean or replace the air intake filter and keep the cooler clean, saving substantial labor and consumable costs.
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