Model: More than thirty models are available
Warranty : 1 Year for machinery warranty
Motor Power : 18.5~250KW(25~330HP)
Air Delivery : 2.3~43m3/min(81.2~1518cfm)
Working Pressure : 7~12.5bar(100~181psig)
Certification : CE/ISO9001/TUV/UL/SGS/ASME
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Oil free screw air compressor are widely used in industries that require high quality air sources such as: pharmaceutical, food, electronics, chemical, packaging, etc. 100% pure compressed air is a necessary procedure to guarantee satisfactory crafts and product quality, which ensures the production of high-end products safely and risk-free.
The lubrication system of an oil free screw air compressor is an individual fuel recycling unit. The compression chamber and the bearings were separated by a set of sealed high-performance mechanical assembly. The lubricating oil can only flow in the enclosed area and is prevented to enter the compression chamber, which only contains 100% pure compressed oil-free air. The users could obtain 100% pure compressed air with some slight post-treatment of water and dust removal.
’ Product News: Also presented at the Hannover Messe 2025 in Germany, this product is not only known and appreciated inside and outside the industry, but also offers a wide range of economically sustainable air solutions for various industry sectors.
Why choose a water-lubricated oil-free air compressor?
The water-lubricated oil-free air compressor is characterized by the use of water. It uses water as lubricant and seal, resulting in 100% oil-free compressed air. Due to the high cooling-effective lubricant water that sprayed into the compression chamber, the exhaust temperature can be low at 40-50 degrees. With the constant temperature compression, water-lubricated air compressor has higher volumetric efficiency (generally 15% higher than dry oil-free screw air compressors), and its price is also cheaper.
(Water-lubricated Oil-free Air Compressor)
’ Warm reminder: For your project combined with our products, we will give you a reasonable and affordable air solution, contact us now!
Oil free water lubrication screw air compressor is a kind of compressor that provides clean, pollution-free, 100% oil free screw air compressor, its zero emission can protect the environment efficiently.
Adopting patented floating meshing profiles, advanced manufacturing processes, and assembly precision, this system achieves 100% oil-free isothermal compression with high volumetric efficiency, large displacement, stable performance, and extended service life.
Lubrication: Pure water replaces oil for lubrication, ensuring air quality.
Sealing: The floating meshing profile forms pure sliding friction between meshing pairs. Water film seals the gaps, creating a continuous and stable sealing zone. This enhances compressor volumetric efficiency by 25% compared to lubrication-free compression.
Cooling (Isothermal Compression): The superior floating meshing profile and unique water injection structure atomize pure water into mist, which mixes with compressed gas. The extensive heat exchange surface rapidly absorbs compression heat, effectively reducing exhaust temperature to 35-55°C. This achieves ideal isothermal compression while avoiding thermal energy loss.
Eliminates energy waste caused by unloading and idle operation.
Efficient, stable, and durable with IP54 protection rating and Class F insulation.
Intelligent and energy-saving industrial integration system enhances operational efficiency and reduces energy consumption.
Atomized pure water absorbs and dampens sound energy and waves, reducing noise by 10-20 dB. Combined with low-speed operation, optimized rotor profiles, and sealed noise-isolation design, the machine operates quietly.
(Water-lubricated Oil-free Compressor)
Simple ,non-corrosive,non-polluting,high reliablity
Single stage compression makes the structure easy.
Compression efficiency is higher than the two stage dry air compressor.
No lubricant, oil separator, or oil filter replacement costs. Only air and water filters require periodic changes. Simplified structure allows easy disassembly and maintenance (completed within 60 minutes), minimizing downtime and ensuring rapid resumption of production.
Superior profile design, rigorous manufacturing, and high-quality components ensure precision and durability: stainless steel housing (corrosion-resistant), imported star wheel materials (enhanced performance), water-lubricated bearings (absolutely oil-free), copper alloy rotors (stable in water-lubricated environments), and stainless steel rotor shafts (corrosion-free).
Elang's innovative floating meshing technology upgrades traditional single-point contact between the screw and star wheel to near-surface meshing, forming an ideal hydrodynamic lubrication. This achieves floating meshing, keeping the star wheel in a wear-free state. Continuous sealing zones reduce internal leakage and noise while improving volumetric efficiency. The result is higher displacement, lower energy consumption, extended service life, and reliable continuous air supply.
FAQ:
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| Servo Motor Compressor | Direct Driven Screw Compressor | Low Pressure Air Compressor | Electric Portable Air Compressor |
Extended Content:
Oil-free Screw Air Compressor Compared with Oil-free Piston Compressor
| Model | Working Pressure | Air Delivery | Motor Power | Dimension(mm) | Weight(kg) | Output pipe Diameter | ||||||||
| psig | bar | cfm | m3/min | kw/hp | L | W | H | |||||||
| ZRCW-25SA | 100 | 7 | 109.5 | 3.1 | 18.5/25 | 1600 | 910 | 1350 | 840 | 1" | ||||
| 116 | 8 | 102.4 | 2.9 | |||||||||||
| 145 | 10 | 95.4 | 2.7 | |||||||||||
| 181 | 12.5 | 81.2 | 2.3 | |||||||||||
| ZRCW-30SA | 100 | 7 | 134.2 | 3.8 | 22/30 | 1450 | 1000 | 1560 | 870 | 1" | ||||
| 116 | 8 | 127.1 | 3.6 | |||||||||||
| 145 | 10 | 113.0 | 3.2 | |||||||||||
| 181 | 12.5 | 88.3 | 2.5 | |||||||||||
| ZRCW-40SA | 100 | 7 | 187.1 | 5.3 | 30/40 | 1950 | 1050 | 1432 | 980 | 11/4" | ||||
| 116 | 8 | 176.6 | 5.0 | |||||||||||
| 145 | 10 | 151.8 | 4.3 | |||||||||||
| 181 | 12.5 | 127.1 | 3.6 | |||||||||||
| ZRCW-50SA | 100 | 7 | 223.0 | 6.6 | 37/50 | 1700 | 1100 | 1630 | 1000 | 11/4" | ||||
| 116 | 8 | 218.9 | 6.2 | |||||||||||
| 145 | 10 | 201.3 | 5.7 | |||||||||||
| 181 | 12.5 | 162.4 | 4.6 | |||||||||||
| ZRCW-60SA | 100 | 7 | 282.7 | 8.0 | 45/60 | 2150 | 1300 | 1590 | 1060 | 11/2" | ||||
| 116 | 8 | 271.9 | 7.7 | |||||||||||
| 145 | 10 | 243.6 | 6.9 | |||||||||||
| 181 | 12.5 | 211.9 | 6.0 | |||||||||||
| ZRCW-75SW | 100 | 7 | 370.8 | 10.5 | 55/75 | 2200 | 1400 | 1540 | 1250 | 2" | ||||
| 116 | 8 | 346.0 | 9.8 | |||||||||||
| 145 | 10 | 307.2 | 8.7 | |||||||||||
| 181 | 12.5 | 257.8 | 7.3 | |||||||||||
| ZRCW-100SW | 100 | 7 | 480.2 | 13.6 | 75/100 | 2400 | 1450 | 1740 | 1480 | 2" | ||||
| 116 | 8 | 459.0 | 13.0 | |||||||||||
| 145 | 10 | 109.6 | 11.6 | |||||||||||
| ZRCW-120SW | 100 | 7 | 572.0 | 16.2 | 90/120 | 2550 | 1400 | 1650 | 2030 | DN50 | ||||
| 116 | 8 | 547.3 | 15.5 | |||||||||||
| 145 | 10 | 494.3 | 14.0 | |||||||||||
| ZRCW-150SW | 100 | 7 | 734.4 | 20.8 | 110/150 | 2700 | 1550 | 1750 | 2450 | DN65 | ||||
| 116 | 8 | 688.5 | 19.5 | |||||||||||
| 145 | 10 | 582.6 | 16.5 | |||||||||||
| ZRCW-175SW | 100 | 7 | 847.4 | 24.0 | 132/175 | 2600 | 1650 | 1750 | 2850 | DN65 | ||||
| 116 | 8 | 812.1 | 23.0 | |||||||||||
| 145 | 10 | 706.2 | 20.0 | |||||||||||
| ZRCW-200SW | 100 | 7 | 981.6 | 27.8 | 160/200 | 3300 | 2200 | 2000 | 3750 | DN65 | ||||
| 116 | 8 | 935.7 | 26.5 | |||||||||||
| 145 | 10 | 829.8 | 23.5 | |||||||||||
| ZRCW-270SW | 100 | 7 | 1218.2 | 34.5 | 200/270 | 3300 | 2200 | 2000 | 4100 | DN80 | ||||
| 116 | 8 | 1165.2 | 33.0 | |||||||||||
| 145 | 10 | 988.7 | 28.0 | |||||||||||
| ZRCW-330SW | 100 | 7 | 1518.3 | 43.0 | 250/330 | 3670 | 2070 | 2370 | 4750 | DN100 | ||||
| 116 | 8 | 1412.4 | 40.0 | |||||||||||
| 145 | 10 | 1306.5 | 37.0 | |||||||||||
| Motor Efficiency Class: Ultraefficient/IE3/IE2 as per your required Motor Protection Class: IP23/IP54/IP55 or as per your required Certification: CE/ISO9001/TUV/UL/SGS/ASME Voltage: 380V/3PH/50HZ/60HZ, 220V/3PH/50HZ/60HZ, 400V/3PH/50HZ/60HZ, 440V/3PH/50HZ/60HZ, 415V/3PH/50HZ/60HZ, 230V/3PH/50HZ/60HZ, dual voltage is also ok |
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