Oil-free screw compressors compress gas without any contact with lubricating oil. The rotors do not make direct contact, maintaining precise clearance between them. The male rotor drives the female rotor via timing gears during high-speed rotation, which not only transmit power but also maintain proper rotor clearance.
Rotary Screw Air Compressors
We specialize in high-efficiency rotary screw air compressors engineered to deliver unmatched reliability, energy savings, and durability for demanding industrial operations.Our oil-free rotary screw technology eliminates contamination risks while reducing maintenance costs, making it the ideal choice for manufacturing, automotive, and heavy machinery applications.
XW Air Compressors &Multi-Power Systems
Basic Speed Air Compressor
XW Air Compressor is the ideal solution for customers seeking to optimize cargo space, reduce truck GVW, and minimize maintenance
Diesel Engine Driven Air Compressor
Custom off-grid diesel air compressor 185-1600 CFM. All-terrain unit with vibration control – ISO certified for oil & gas fields.
Electric Driven Air Compressor
95% efficiency industrial compressor (26.8-429kW). 7-30 bar silent operation with lifetime warranty – CE certified for factories.
High Speed Truck Mounted Air Compressor
Energy-efficient 1600 CFM high-pressure air compressor. Compact rotary screw design saves 15% truck space – EURO V compliant for construction
Trailer Diesel Air Compressor
Space-saving vehicle air compressor reduces GVW by 18%. 7-35 bar vertical design with ASME certification – optimized for logistics fleets.
Trailer Electric Driven Air Compressor
Zero-emission wheel-mounted compressor (26.8-320kW). Delivers 7-30 bar pressure with CE/ASME certifications – ideal for urban construction & indoor facilities.
Trailer High Temperature air compressor
Best industrial air compressor for hot climates with advanced cooling system. Maintains 7-35 bar working pressure and 185-1600 CFM airflow
Working Principle of Screw Compressor
Intake
The volume between the teeth of the Mingyang rotor gradually expands with the rotation of the rotor, when the volume reaches the maximum. The volume between the teeth is disconnected from the air hole, and Wanwei breathes in
Start Compression
The rotor continues to rotate, and the volume of the yin and yang rotor teeth is connected
Exhaust
The compressed air reaches the rated pressure, at this time the volume between the teeth and the vent hole are conceived to eliminate the gas
Benefits Of XW Rotary Screw System
The design structure of the compressor is continuous gas supply, no intermittent and no dead angle, the power required to generate a single amount of airflow and pressure is very low, calculated in units of cubic meters, the compressor is the market, the machine with low operating cost, basically Maintenance-free.
Large displacement and light weight
The main vehicle PTO takes power, does not require a diesel engine, weighs only 130KG, is easy to install, saves time and effort, and reduces the weight of the main vehicle.
Strong reliability
Each box has passed the high-pressure test; low-pressure output gas, the tank is safe and guaranteed, and accidents caused by high-pressure failures are avoided.
Stable and long life
Stable operation with 8-10 year lifespan (3x longer than traditional swing-lever machines). No wearing parts for worry-free performance.
Low maintenance cost
This compressor delivers continuous, uninterrupted airflow with minimal energy use per m³. It’s a low-cost, nearly maintenance-free solution on the market
Let‘s Realize Your Grand Plan Together
Products known for their uncompromising reliability, high quality and premium performance.
- +86 15665791532
- Hua Run Building, Jingshi Road, Jinan City, Shandong Province
FAQ
Here are the most common questions we receive about oil-free compressors.
Need more answers? Our experts are ready to assist.
How does an air compressor work ?
An air compressor draws in ambient air, compresses it using pistons or rotary screws, and stores pressurized air in a tank. This compressed air powers tools and equipment. XW’s oil-free models use advanced engineering to eliminate lubrication needs, ensuring clean, contaminant-free airflow.
Which is better oil or oil free air compressor ?
Oil-free compressors (like XW’s) excel in applications requiring 100% clean air (e.g., food, pharmaceuticals) with lower maintenance. Oil-lubricated units may last longer for heavy industrial use but require frequent oil changes. For purity and simplicity, oil-free is superior.
Are oil free air compressors any good ?
Yes. Modern oil-free compressors, such as XW’s, leverage precision machining and durable materials to match traditional compressors in performance. They eliminate oil contamination risks, reduce upkeep, and meet strict industry standards—ideal for sensitive environments.
Who makes the best rotary screw air compressor ?
XW Oil-Free Air Compressor is a global leader in rotary screw technology. Our China-made systems combine energy efficiency, ultra-quiet operation, and unmatched reliability, backed by 20+ years of engineering expertise and ISO-certified manufacturing.
How do i maintain my oil free air compressor ?
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Regularly drain moisture from tanks.
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Clean/replace air filters to ensure airflow.
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Check seals and connections for leaks.
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Follow XW’s maintenance guide for optimal lifespan.
Proactive care ensures peak performance—our support team provides tailored solutions for long-term durability.
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