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Oil-free water-lubricated permanent magnet variable frequency screw air compressor is an air compressor that uses pure water (or water-based lubricant) instead of traditional lubricating oil, combines permanent magnet synchronous motor and variable frequency speed regulation technology, and provides 100% oil-free compressed air to meet high cleanliness requirements.
Features
1. Oil-free
Water-lubricated, zero oil contamination (compliant with ISO 8573-1 Class 0).
2. Permanent magnet inverter
IE4/IE5 ultra-high energy efficiency, intelligent speed regulation, and energy saving.
3. Low maintenance
No oil changes required, only regular water treatment.
Product Parameters
| Oil-free Water Lubricated Screw Air Compressor RW Series | |||||||||||
| Model | Air Delivery (m3/min) | Power (kW) | Lubricating water amount (Liters) | Cooling water amount T/Hour | Cooling water inlet/outlet diameter | Noise dB(A) | Outlet diameter | Dimension (mm) | Weight (Kg) | ||
| 8 bar | 10 Bar | 12.5 bar | L*W*H | ||||||||
| RW-160W | 28.11 | 25.45 | 22.52 | 160 | 240 | 35.0 | 3H | 80 | DN80 | 2700*1800*2050 | 3700 |
| RW-185W | 33.97 | 29.00 | 25.21 | 185 | 300 | 38.0 | 3" | 80 | DN80 | 2700*1800*2050 | 3750 |
| RW-200W | 36.75 | 32.78 | 29.24 | 200 | 300 | 42.0 | 4" | 80 | DN100 | 2700*1800*2050 | 3900 |
| RW-220W | 39.67 | 36.75 | 29.63 | 220 | 360 | 47.0 | 4" | 80 | DN100 | 2700*1800*2050 | 4200 |
| RW-250W | 43.50 | 39.30 | 34.00 | 250 | 360 | 58.0 | 4" | 80 | DN100 | 2700*1800*2050 | 4600 |
Application Scenarios
Cleanroom applications such as medical, food, semiconductor, chemical and energy, water treatment and environmental protection, automotive spray painting, textiles, and precision machinery.
FAQ
1. Will water lubrication corrode the airend?
A: Using stainless steel rotors or ceramic coating technology, the corrosion-resistant design guarantees a lifespan of over 10 years.
2. What are the water quality requirements?
A: Deionized or softened water (conductivity <10μS/cm) is required to prevent scaling and corrosion.
3. Will it freeze in winter?
A: In cold regions, antifreeze should be added or the airend should be shut down and drained. Some models are equipped with automatic antifreeze protection.
4. What are the advantages over dry oil-free airends?
A: Water lubrication provides better heat dissipation and a longer lifespan (dry oil-free airends are prone to high-temperature wear).
5. What is the maintenance interval?
A: The water filter should be replaced every 2,000 hours, and the airend should be overhauled every 40,000 hours (approximately 20,000 hours for oil-lubricated airends).
