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Time：2026-01-16 11:18:55 Reading volume：
Centrifugal oil purifiers utilize high-speed rotation to generate a strong centrifugal force, separating oil contaminants based on their density. Water, solid particles, and heavy colloids are stratified into layers inside a rotating drum. This technology is widely used for hydraulic oil, lubricating oil, and transformer oil purification in industrial and marine systems.
Centrifugal oil purifiers operate without the need for disposable filter elements. The rotating metal drum only requires periodic sludge removal, significantly reducing long-term operating and maintenance costs.
They are highly effective at removing free and emulsified water, breaking oil-water emulsions that conventional filtration systems often cannot handle.
Designed for continuous-duty operation, centrifugal purifiers can process large oil volumes efficiently, making them ideal for bypass circulation systems.
Centrifuges tolerate large particles and high contamination levels without clogging, ensuring reliable performance in harsh operating environments.
With a straightforward mechanical structure and no disposable components, maintenance is simple and waste generation is minimized.
Centrifugal oil purifiers cannot effectively remove ultra-fine particles below 1 μm or dissolved contaminants. Oil cleanliness is typically limited to NAS 10–12, making it unsuitable for high-precision hydraulic systems.
Acids, dissolved gases, and oxidation by-products remain in the oil, limiting their effectiveness in deep oil regeneration applications.
High centrifugal forces may separate density-sensitive additives in certain hydraulic oils, which can affect lubrication performance.
Each centrifuge has a critical particle size limit. High-speed rotation also generates noise and vibration, requiring stable installation conditions.
Although operating costs are low, high-performance centrifugal oil purifiers typically have higher upfront costs than cartridge-based filtration systems.
Recommended Application Scenarios
Best suited for:
Emergency water contamination removal
Pretreatment before fine filtration systems
Heavily contaminated equipment (construction machinery, marine systems)
Cost-sensitive applications with moderate cleanliness requirements
Not recommended for:
Precision hydraulic systems requiring NAS 5 or cleaner
Applications requiring removal of dissolved contaminants
Oils containing density-sensitive additive packages
Conclusion
Centrifugal oil purifiers are highly effective for removing water and coarse contaminants from industrial oils. They offer low operating costs, high contamination tolerance, and continuous operation, but cannot achieve high cleanliness levels alone. For optimal oil quality, centrifugal purification is best combined with precision filtration and vacuum dehydration based on system requirements.
