How to lubricate an oil-free air compressor?

How Do Oil-Free Air Compressors Stay Lubricated?

Oil-free air compressors use specialized lubrication methods to ensure smooth operation without traditional lubricating oil. One of the most common methods is water lubrication.

Shanghai Granklin Group Air Compressor Product Overview：

Shanghai Grankklin Group offers a wide range of air compressors, including water-lubricated air compressors, oil-free air compressors, variable frequency compressors, screw compressors, and low-pressure compressors. These compressors cover a power range of 5.5 to 250 kW and operate at working pressures from 0.3 MPa (low pressure) to 4 MPa (medium pressure).

To maintain compressor performance and reliability, regular replacement of consumable parts, such as water filters and air filters, is essential.

Oil-Free Air Compressors & Water Lubrication

Q: How Do Oil-Free Air Compressors Stay Lubricated?
A: Oil-free air compressors typically use a water lubrication system. In this system, water acts as a lubricant, coolant, and sealant for the compressor’s moving parts. A specially designed water supply and sealing system directs water into the compression chamber, forming a thin water film that reduces friction, dissipates heat, and maintains efficiency.

Key Advantages of Water-Lubricated Air Compressors

✅ Oil-Free & Contaminant-Free – Since no lubricating oil is used, the compressed air remains 100% oil-free, making it ideal for industries requiring high air purity.

✅ Eco-Friendly & Energy Efficient – Water has excellent heat dissipation properties, enhancing cooling efficiency and reducing energy consumption.

✅ Simplified Maintenance – Unlike traditional oil-lubricated compressors, water-lubricated systems don’t require oil changes, reducing maintenance complexity.

Maintenance Considerations
🔹 Regular Water Filter Replacements – To keep the lubrication system clean and functioning properly, water filters should be inspected and replaced periodically.

🔹 Follow Manufacturer Guidelines – Since water-lubricated compressors have unique structural and operational characteristics, maintenance procedures may differ from traditional oil-lubricated compressors. Always refer to the manufacturer’s operation and maintenance manual for best practices.