On beverage filling lines, even an invisible trace of oil mist can lead to an entire batch being rejected. In electronics and semiconductor cleanrooms, microscopic oil contamination can significantly reduce precision chip yield rates. While conventional oil-lubricated air compressors can satisfy general industrial applications, oil-free compressed air has become an essential requirement for industries with stringent cleanliness standards.
Tecbell water-lubricated oil-free screw air compressors use water as the lubrication medium, achieving 100% oil-free compression directly at the source. Designed specifically for oil-sensitive applications, they combine high efficiency, energy savings, and reliable performance, providing clean power and quality assurance for modern industries.

Working Principle of Water-Lubricated Oil-Free Screw Air Compressors
Tecbell water-lubricated oil-free screw air compressors use high-purity purified water as the lubrication medium. During operation, a dense and uniform water film forms between high-speed rotating components, effectively preventing friction and wear while completely eliminating lubricant contamination from the source.
At the same time, water molecules rapidly absorb friction heat, delivering excellent cooling performance and extending equipment service life. Compared with conventional lubricating oil, purified water not only reduces operation and maintenance costs, but also enables the compressed air to achieve true oil-free standards required by high-end industries such as electronics and pharmaceuticals.
In addition, the superior cooling capability of water improves volumetric efficiency and ensures more stable equipment operation.

Core Product Advantages
True Class 0 Oil-Free Air, Completely Clean
Fully water-lubricated with zero oil contamination design
Exceeds ISO 8573-1 Class 0 standards
Stainless steel rotors, housings, and pipelines
No corrosion and no coating peeling risk
Isothermal Compression for High Efficiency and Energy Saving
Water offers heat transfer efficiency 25 times greater than air
Compression process approaches isothermal compression
Outstanding energy-saving performance
Simple Structure, Reliable and Durable
Zero-stress rotor design with precision three-rotor meshing
Water-film cushioning effectively reduces vibration and noise
Noise level ≤ 65 dB
Fewer moving components with no oil pump, oil separator, or oil circuit
Failure points reduced by 60%
Safe, Eco-Friendly, and Low Maintenance Cost
No oil contamination discharge
Condensate can be discharged directly
Environmentally friendly and green operation
Daily consumables limited to air filters and water filters
No lubricant oil or oil separator replacement costs
Full Product Range for Diverse Applications
The product range covers power capacities from 5.5 kW to 470 kW, with flexible pressure options including:
Low pressure: 1.5–4 bar
Standard pressure: 7–10 bar
Medium pressure: 25–40 bar
Models can be flexibly selected according to actual production requirements.

Suitable Industries
Food & Beverage
Pharmaceutical & Sterile Manufacturing
Electronics & Semiconductors
New Energy
Precision Manufacturing
Other high-cleanliness industries

True Class 0 Oil-Free Air, Engineered for Pure Compressed Air.Tecbell water-lubricated oil-free screw air compressors provide clean, efficient, and reliable green power solutions for high-end manufacturing industries, helping enterprises reduce costs, improve efficiency, and enhance product quality.
Looking ahead, Tecbell will continue to uphold its commitment to innovation, further improve its product portfolio and service system, and provide global customers with more advanced, reliable, and customized compressed air system solutions for a greener and smarter manufacturing future.