Overview of UNITED UCS oil-free air compressors

UNITED UCS oil-free air compressors belong to the group Oil-Free Screw Air Compressorcategory, in which the entire compression process does not use lubricating oil in the compression chamber. As a result, the output compressed air achieves high purity, eliminating the risk of contaminating the product or the system.

The oil-free UCS series was developed by UNITED, targeting factories that require:

• Clean compressed air that meets international standards.

• Stable and continuous operation

• High reliability and transparent maintenance costs.

Compared to oil-lubricated air compressors, oil-free models are particularly suitable for industries with strict quality and safety controls.

Typical technical specifications of UNITED UCS oil-free air compressors.

Specifications	Detail
Brand	United OSD
Origin	Shanghai
Capacity	55 – 240 kW
Flow	7.7 – 12.6 m3/minute
Product type	Screw air compressor (2-stage compression)
Control type	Normally-Inverter
Lubrication type	Oil-Free
Cooling type	Air cooling

Specifications

• The multilingual interface supports three languages: Chinese, English, and Japanese, making it easy for users to operate in various work environments.
• The automatic energy-saving mode reduces power consumption when the machine is not in operation, helping to optimize operating costs.
• The scheduled maintenance reminder system displays timely inspection and maintenance notifications, helping to maintain stable performance and extend equipment lifespan.
• The error log and alert display function allows for the recording of a list of incidents, assisting technicians in quickly identifying the cause and resolving them.
• The continuous machine monitoring feature updates operating parameters, allowing users to accurately track the equipment's status.
• The integrated operational data logging system allows for monitoring compressor performance over time.
• The reset function allows for easy power off and restart of the compressor, ensuring safe and stable operation.

United OSD Oil-Free Air Compressors

Option function:

• Versatile operating modes: Supports multiple operating modes such as alternate operation, quantity control, and automatic to meet different usage needs.
• Communication: Integrates multiple communication interfaces to connect with other devices and systems.

Screen interaction function

• Data recording to USB: Customers need to prepare a USB drive smaller than 5.5cm to record data. Daily operational data should be approximately 400KB (for reference only).
• Bluetooth network server functionality: Requires the use of Bluetooth and USB Softdog. Customers need to configure the corresponding settings.
• Modbus communication: Supports Modbus RTU communication for frequently configured connections. Modbus/TCP communication support is optional.
• Note: Bluetooth is a registered trademark of Bluetooth SIG, Inc. Modbus is a registered trademark of Schneider Automation Inc.
• USB storage (data export): Provides the ability to store data such as pressure, temperature, current, logs, and time.

United OSD Oil-Free Air Compressors

Screen

Large LCD screen: Clearly displays the operating status and settings of the compressor. Setting functions via the control panel is easy, increasing user convenience. In case of an error, the LCD screen will display an error message so that the problem can be quickly resolved.

Compression head

• Synchronized bearing and gear design
  The bearings and gears are synchronized in design, combined with a precise lubrication system. The gears are machined to high precision, ensuring optimal clearance between the rotors, resulting in smooth and stable operation.

• High-performance rotor
  During operation, contact between the rotors can reach temperatures exceeding 200°C, causing significant thermal expansion. UNITED OSD pioneers the application of this thermal expansion characteristic, combining it with independent three-dimensional adjustment technology to optimize the clearance between the screw blades. As a result, the compressor head achieves high efficiency, reduces friction, and increases long-term durability.

Compression head

Principle of operation

UNITED UCS oil-free air compressors operate on the following principle:

1. Ambient air is drawn into the compression chamber.
2. Two screw shafts rotate in opposite directions to compress the air no lubricant
3. The heat generated is controlled by a cooling system.
4. Clean compressed air is delivered directly to the usage system.

By not using oil in the compression chamber, the machine completely eliminates the risk of:

• Oil contamination in compressed air
• Product contamination
• Cost of treating waste oil

The outstanding advantages of UNITED UCS oil-free air compressors.

• Absolutely clean compressed air (0 ppm oil)
• Meets stringent standards for food, pharmaceuticals, and healthcare.
• Stable operation, high reliability.
• Reduced costs for air treatment and downstream system maintenance
• Environmentally friendly, no waste oil is generated
• Improve the quality and reputation of the final product.

Practical applications

In practical implementation at manufacturing plants:

• The food and beverage industry uses clean compressed air for packaging and filling processes
• The pharmaceutical and medical industry uses drug production and medical equipment manufacturing
• Applied electronics industry in precision component assembly

According to feedback from the operations engineering team, the UNITED UCS oil-free air compressor helps reducing inspection risks, ensuring product quality stability, and enhancing brand reputation..

Reducing inspection risks, ensuring product quality stability, and enhancing brand reputation.

Businesses need to clearly define:

• Required compressed air flow rate (m³/min)
• System operating pressure
• Clean air standard requirements
• Operating time/day

Choosing the right capacity and configuration helps optimize long-term investment and operating costs.

Installation & Operation Instructions

• Install in a clean, well-ventilated area.
• Ensure the cooling system is operating efficiently.
• Check the air intake filter periodically.
• Follow technical recommendations for maintenance to maintain optimal performance.

Frequently Asked Questions (FAQ)

1. Are UNITED UCS oil-free air compressors truly oil-free?
Yes. The compressed air output achieves 0 ppm oil, meeting strict clean air standards.

2. Is an additional oil filter needed at the rear?
Normally not necessary, but fine filtration may be added depending on factory standards.

3. Is the investment cost higher than for oil-lubricated engines?
Higher initially, but saves costs in the long run and is safer for production.

4. Is it suitable for continuous 24/7 operation?
It is fully suitable for continuous 24/7 operation.

Why should you buy UNITED UCS oil-free air compressors from Phuc Hung?

• The unit has practical experience in deploying clean compressed air systems.
• Providing the right advice – meeting the right needs – avoiding wasted investment.
• Supply of genuine products with transparent technical information
• Clear warranty, after-sales service, and technical support.

Are you looking for UNITED UCS oil-free air compressor to ensure absolutely clean compressed air for the production line?
👉 Contact carried out maintenance and oil sludge (varnish) removal for for in-depth technical advice, to choose the right model, and to receive the best possible quote for your business.