China 55kw to 315kw Oil free screw air compressor with dry type fixed speed or VSD PM type Suppliers, Exporters
Product Description
Features
100% oil-free compressed pure air, more energy-saving and more environmentally friendly.
High-efficiency oil-free main engine, aviation impeller coating ensures high durability.
The unique system design and each high-precision component effectively guarantee the superior performance and service life of the whole machine.
Permanent magnet frequency conversion and two-stage compression make the energy efficiency of the whole machine a step further, ensuring energy-saving efficiency under different users and working conditions.
The main engine has an independent air intake system, which directly absorbs external cold air, and the large air filter box makes it easy to replace the air filter element.
The top door can be turned over to make maintenance and inspection more convenient.
The design of the muffler device can effectively reduce the exhaust noise, and the unique structure design of the whole machine has low noise and high efficiency.
High Efficiency & Save Energy Motor
High efficiency & energy saving intake valve, keep in lower unloading pressure and avoid large energy consumption when unloading.
New oil tank design, lower pressure drop and less energy consumption.
Shortest piping system in order to reduce the pressure drop.
Oversized air/oil separator to bring down the pressure drop.
Optimized cooler design, less elbow.
Packing and delivery
100% oil-free: suitable for medical, pharmaceutical, precision electronics and food and beverage industries with strict air quality and production process requirements.
The whole machine adopts low speed, high wind fan and large plate cooler to reduce air convection friction and provide comfortable and quiet environment.
Production Details
Air-End
Name brand air-end research & development experience.
High technology content air-end, average 8-10% energy saving.
Owned design gearbox, reliability & durable.
Reliability & Safety
Reliability bigger cooler, lower operating temperature.
Safety and reliability filter system.
Integrated fan, stable and high efficiency.
Reinforced cabinet, strong & safety.
Low noise & low vibration
Air-end with, low noise & vibration.
Motor with noise reduction baffle.
Easy Installation & Operation
Compressor is filed with lubrication oil before shipping. You can operate it after installing and power on.
PLC intelligent control system, has the remind & record function, show the compressor situation clearly.
Friendly use, open the door can fulfill the common maintenance.
Cooler and fan easy to clean.
Product Parameters
| Model | EOF-55W | EOF-75W | EOF-90W | EOF-110W | EOF-132W | EOF-145W | EOF-160W | EOF-200W | EOF-250W | EOF-315W | |
| Free air delivery / Discharge air pressure (M³/min / Mpa) | 8.8 / 0.75 | 11.9 / 0.75 | 14.3 / 0.75 | 19.1 / 0.75 | 21.9 / 0.75 | 23.5 / 0.75 | 28.3 / 0.75 | 36.1 / 0.75 | 43.1 / 0.75 | 46.4 / 0.75 | |
| 7.9 / 0.85 | 11.2 / 0.85 | 13.5 / 0.85 | 17.1 / 0.85 | 19.6 / 0.85 | 21.7 / 0.85 | 26.1 / 0.85 | 33.1 / 0.85 | 41.0 / 0.85 | 43.0 / 0.85 | ||
| 7.3 / 1.0 | 10.7 / 1.0 | 12.7 / 1.0 | 16.0 / 1.0 | 18.9 / 1.0 | 20.1 / 1.0 | 24.2 / 1.0 | 30.4 / 1.0 | 37.4 / 1.0 | 41.0 / 1.0 | ||
| Motor | Power (kw/hp) | 55 / 75 | 75 / 100 | 90 / 120 | 110 / 150 | 132 / 175 | 145 / 200 | 160 / 215 | 200 / 270 | 250 / 355 | 315 / 420 |
| Start method | VSD Starter / star triangle | ||||||||||
| Voltage (v/hz) | 380V 3PH 50HZ (380V-3PH-60HZ / 460V-3PH-60HZ / 220V-3PH-60HZ / 400V-3PH-50HZ / other voltages customized) | ||||||||||
| Drive method | direct drive | ||||||||||
| Connector inch | 2" | 2" | DN65 | DN65 | DN80 | DN100 | DN100 | DN100 | DN100 | DN150 | |
| Dimension | length mm | 2630 | 2630 | 2630 | 2630 | 3200 | 3200 | 3200 | 3200 | 3500 | 3500 |
| width mm | 1788 | 1788 | 1788 | 1788 | 1980 | 1980 | 1980 | 1980 | 2100 | 2100 | |
| height mm | 1900 | 1900 | 1900 | 1900 | 2000 | 2000 | 2000 | 2000 | 2200 | 2200 | |
| Weight (kg) | 2300 | 2500 | 2800 | 2980 | 3100 | 3300 | 3500 | 3800 | 4200 | 4800 | |
| All the technical parameters of our company are for customers' reference, and the actual size and weight are based on the ex-factory machines. If there is any change without notice, please be informed! If the compressor is VSD PM type model name is EOFV-. | |||||||||||
Frequently Asked Questions
Which industries are suitable for this oil-free air compressor?
The unit provides 100% oil-free compressed pure air, making it ideal for medical, pharmaceutical, precision electronics, and food and beverage industries that require high air purity standards and strict production processes.
How does the machine maximize energy savings during operation?
Energy efficiency is maximized via permanent magnet frequency conversion, two-stage compression, an aviation impeller coating, a high-efficiency intake valve with reduced unloading pressure, an oversized air/oil separator, and an optimized piping layout with minimal bends.
What measures are in place to reduce noise and vibration?
The system combines a low-noise, low-vibration air-end, motor noise reduction baffles, a dedicated muffler device, and a low-speed, high-wind fan coupled with a large plate cooler to minimize air convection friction.
How convenient are maintenance and daily inspections?
Daily maintenance is simplified with a turnover top door, an easily accessible large air filter box for swift element replacement, accessible coolers and fans, and a PLC intelligent control system that records real-time data and displays maintenance reminders.
Can the electrical voltage be customized for international standards?
Yes. While the standard configuration is 380V 3PH 50HZ, configurations for 380V 60Hz, 460V 60Hz, 220V 60Hz, 400V 50Hz, and other voltage options can be fully customized upon request.
Is the compressor ready to run immediately after delivery?
Yes, the compressor is pre-filled with lubrication oil before shipping. You can operate the unit immediately once physical installation and electrical power connections are complete.
