Fixed Speed Air Compressor 7.5kW to 132kW

7.5kW–132kW Fixed-Speed Air Compressor – Core Specifications

I. Industrial Fixed-Speed Motor

This full-range fixed-speed compressor is equipped with a high-efficiency industrial fixed-speed motor, featuring Grade 2 energy efficiency, IP54 dustproof and waterproof protection, and Class F insulation.

It adopts a direct-drive structure without belt transmission, ensuring higher transmission efficiency and lower failure rates. Compatible with standard 380V/50Hz industrial power supply, the unit supports stable 24-hour full-load continuous operation. With a simplified mechanical design, it requires minimal maintenance and is ideal for steady-air-demand industries including textiles, chemicals and mining.

II. Complete Power & Pressure Range

- Power Ratings: 7.5kW, 15kW, 22kW, 30kW, 37kW, 45kW, 55kW, 75kW, 90kW, 110kW, 132kW

- Free Air Delivery: 1.2–23.2 m³/min

- Standard Pressure: 0.8 MPa

- Customizable Pressure: 1.0 MPa / 1.3 MPa

III. Low Noise & Reliable Cooling System

- Operating Noise: 63–72 dB(A) (varies according to different power models)

- Cooling Type: High-efficiency air cooling

- Discharge Temperature: ≤ Ambient temperature + 15°C

- Working Ambient Temperature: -5°C to 45°C

The optimized cooling structure effectively controls operating temperature, ensuring stable performance even under long continuous working cycles.

IV. Intelligent Control & Full Safety Protection

Fitted with an industrial HD microcomputer controller, the system displays real-time operating pressure, discharge temperature, total running time and fault codes.

It supports automatic load and unload operation, with built-in multi-protection functions including over-pressure protection, high-temperature alarm, motor overload protection and phase sequence protection. The user-friendly interface allows simple and fast parameter adjustment for stable and safe daily operation.

Product Specifications Table:

Note: 

All above technical data is measured under standard working pressure of 0.8 MPa.

Please consult Elily for custom solutions including higher pressure versions (1.0 MPa / 1.3 MPa) and special voltage configurations.

Applications:

Elily 7.5kW–132kW Fixed-Speed Air Compressors are ideal for centralized air supply in medium-sized factories and zonal air supply for large workshops with steady and long-term air consumption.

Metalworking

Supports pneumatic clamping, sandblasting, drilling and tapping with stable continuous airflow for consistent machining quality.

Surface Treatment

Provides constant-pressure air for painting and powder coating blowing processes, ensuring uniform surface treatment results.

Packaging & Food Processing

Serves pneumatic strapping, bottle blowing and material conveying. Matches production requirements when equipped with downstream precision filtration systems.

Textile & Dyeing

Fits air-jet looms and air-jet spinning equipment, fully adaptable to 24-hour non-stop continuous operation.

Chemical & Pharmaceutical Industry

Supplies stable compressed air for pneumatic instruments, fermentation aeration and industrial material conveying.

Maintenance Workshops & Automated Lines

Reliable for pneumatic wrenches, cylinder operation and instrument control on various automated production systems.

Unique advantages of fixed-speed air compressors:

Compared with variable-frequency compressors, Elily 7.5kW–132kW Fixed-Speed Rotary Screw Air Compressors deliver outstanding cost and reliability advantages for steady-demand industrial environments.

1. Lower Initial Investment

Without expensive VFD inverters and permanent-magnet motor configurations, fixed-speed models reduce upfront procurement costs by 20%–30%, offering excellent cost performance for mass factory deployment.

2. Simplified Structure & Easy Maintenance

Featuring fewer electronic components, the mechanical structure is mature and reliable with low failure points. Routine maintenance is simple and accessible for ordinary electricians, requiring no professional frequency-modulation technical support.

3. Excellent for Continuous Full-Load Operation

In working scenarios with stable air consumption, the energy efficiency gap between fixed-speed and variable-frequency compressors is minimal. Meanwhile, fixed-speed units provide stronger durability and more stable performance during long-term 24-hour full-load operation.

4. Universal & Cost-Effective Spare Parts

Fixed-speed motors and controllers adopt industry-standard specifications. Replacement accessories are widely available in the market at low cost, greatly reducing later operation and maintenance expenses.

5. Better Power Grid Adaptability

Fixed-speed operation produces almost no harmonic interference to the power grid. No additional reactors or grid stabilization devices are required, ensuring safer and more compatible factory power operation.

Logistics & Packaging

Each fixed-speed air compressor is packed in an ISPM-15 compliant heat-treated wooden export crate with official fumigation markings, supporting hassle-free customs clearance worldwide.

Shock-absorbing foam and reinforced fixing brackets inside the crate protect the machine against vibration and collision damage during transit. The unit is firmly mounted on a pallet for convenient forklift loading and unloading. Lifting positions and center-of-gravity marks are clearly printed on the outer crate for safe handling.

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FAQ：

Q: Can the 7.5kW–132kW fixed-speed air compressor run 24 hours continuously?

A: Yes. All Elily fixed-speed compressors adopt S1 continuous-duty design. Proven in field operation, they support long-term full-load running at 0.8 MPa and can operate over 8,000 hours without major maintenance under proper upkeep. Thanks to their simplified and robust structure, fixed-speed units perform more stably in non-stop industrial operation than variable-frequency models.

Q: Is the actual air delivery consistent with the spec sheet data?

A: All technical parameters are tested in strict accordance with ISO 1217 standards (1 bar intake pressure, 20°C intake temperature). Slight airflow reduction may occur due to high ambient temperature or pipeline leakage on-site, yet the overall deviation is controlled within 5% under normal working conditions.

Q: Which is more energy-saving, fixed-speed or variable-frequency compressors?

A: For stable air demand and long full-load operation, fixed-speed compressors deliver nearly identical energy efficiency at much lower procurement cost. For frequently fluctuating air consumption, variable-frequency models save 20%–30% energy. Fixed-speed units stand out with lower investment, simpler structure and easier daily maintenance.

Q: Does pressure customization affect air delivery?

A: Yes. Under the same power rating, higher working pressure reduces free air delivery. For instance, a 22kW model outputs 4.15 m³/min at 0.7 MPa, while airflow decreases to 3.2 m³/min at 1.0 MPa. We recommend selecting the model according to your maximum pressure requirement.

Q: How to choose the correct power rating from 7.5kW to 132kW?

- 7.5–15kW: Ideal for small workshops and single pneumatic equipment

- 22–37kW: Suitable for small and medium workshop centralized air supply

- 45–75kW: Perfect for medium production lines and factory-wide air systems

- 90–132kW: Designed for large factories and high-air-consumption scenarios

Contact our team for free professional airflow calculation and model selection.

Q: Do fixed-speed compressors start and stop frequently?

A: Equipped with an air receiver tank and pressure switch control, the unit maintains continuous load operation under stable air demand, avoiding frequent start-stop cycles. Users can set a wider pressure range or install a larger buffer tank to further optimize operating stability.

Q: Do you support neutral packaging and private labeling for foreign trade partners?

A: Yes. We provide neutral packaging, OEM and ODM customization services for orders of 5 units or more. Welcome foreign trade merchants for long-term cooperative consultation.