Difference between water injection screw and oil injection screw

Difference Analysis of Water Injection Screw and Oil Injection Screw Air Compressor
screw air compressors can be divided into two categories according to lubrication and cooling medium: water spray screw and oil injection screw. The core differences are reflected in the lubrication method, applicable scenarios and environmental performance. The following is a specific comparison and granklin air compressor adaptation advantages:

1. core difference comparison

technical advantages of 2. water jet screw air compressor (taking Grantklin as an example)

1. oil-free clean output
   • the use of water-lubricated single-screw technology, water instead of lubricating oil, from the source to prevent oil mixed with compressed air, directly meet the food, pharmaceutical and other industries on the "oil-free compressed air" stringent requirements.
2. Stable and efficient operation
   • the single screw and the star wheel plate are precisely matched, combined with water cooling technology, to ensure that the equipment can still maintain a constant pressure when running at high load, and reduce the production efficiency drop caused by air pressure fluctuation.
3. Environmental Protection and Cost Advantages
   • water can be recycled, no waste oil treatment is required, and environmental compliance costs are reduced. Maintenance only needs to pay attention to water quality and filter element replacement, and the overall maintenance cost is reduced by more than 30% compared with the oil-injected screw air compressor.
4. Adapt to wet environment
   • water lubrication technology is more adaptable to humid environments, which can avoid the performance degradation of lubricants due to moisture condensation, and is suitable for food processing and aquaculture in high humidity areas.

3. selection recommendations

• high Purity Demand Scenarios(such as food packaging, pharmaceutical production): priority choice of water jet screw air compressor (such as Granklin water lubricated single screw air compressor), to ensure that the compressed air without oil pollution, reduce the post-processing equipment input.
• General industrial scenario(such as mechanical processing, automated assembly): If the purity requirements are not high, you can choose the oil injection screw air compressor, but need to configure the oil removal equipment and bear higher maintenance costs.

Conclusion
the core difference between the water jet screw and the oil jet screw air compressor is the lubrication medium and the applicable scenario. Granklin water-lubricated single screw air compressor has become an ideal choice for high-purity industries such as food and medicine with the advantages of oil-free, environmental protection and high efficiency, helping enterprises to achieve safe production and green development goals.