5 Advantages of PAG based Oil in Screw Compressor Systems

What is a Screw Compressor?

A screw compressor is a valveless, positive-displacement compression device. It operates byusing a transmission mechanism to drive two intermeshing rotors-one male and one female-to rotate precisely within the casing. This causes the gas to be drawn in, compressed, and then discharged through the periodic volume changes within the compression chamber. This mechanical design is simple, compact, lightweight, offers a high compression ratio, and operates with excellent energy efficiency. Against the current backdrop of promoting steady energy conservation, screw compressors have become the mainstream choice in the market.

During the recycling process, screw air compressor oil frequently encounters multiple challenges, such as atomization, high temperatures, high oxygen levels, and moisture. These factors can easily accelerate oil oxidation, leading to increased viscosity. Consequently, the oil must possess excellent oxidation resistance, along with good anti-rust, anti-emulsification, anti-foaming, and anti-corrosion properties.PAG (polyalkylene glycol) lubricants feature superior lubrication performance, a low friction coefficient, a high flash point, and a high viscosity index. Combined with outstanding oxidation resistance and thermal stability, they fully satisfy these complex requirements. Therefore, PAG lubricants are widely applied in the compressor field.

Parameter Comparison of High-Quality Mineral Base Oil and PAG+Ester Oil for Screw Compressor Oil

Advantages of PAG Base Oils in Screw Compressor Applications

Excellent Viscosity-Temperature Characteristics and Shear Stability: PAG base oils generally possess a high viscosity index, which means their viscosity changes minimally across a wide temperature range. They maintain oil film strength at high temperatures, flow easily at low temperatures, and resist viscosity drops caused by mechanical shear. This protects machinery for long-term, stable operation, making them highly suitable for harsh operating conditions such as industrial gears and screw compressors.

Outstanding Cleanliness: The cleanliness of PAG stems from its own excellent cleaning capability. Its highly polar molecular structure can form a protective film on metal surfaces, effectively isolating contaminants. At the same time, it can dissolve and disperse deposits such as sludge, thereby playing a cleaning role.

In addition, excellent thermal stability minimizes coking at high temperatures, keeping the system clean over extended operation.
 

Excellent Thermal-Oxidation Stability and Long Service Life:Benefiting from exceptional thermal-oxidative stability,

PAG-Based Compressor Lubricant work synergistically with antioxidants to effectively suppress sludge and carbon deposit formation under high-temperature operating conditions.

Efficient Sealing and Excellent Cooling Capacity: PAG demonstrates great compatibility with sealing materials. PAG lubricants can form a resilient oil film inside the screw compressor, effectively sealing the minute clearances between the rotors and the casing to reduce working fluid leakage and boost compression efficiency. Meanwhile, its excellent fluidity allows it to rapidly dissipate frictional heat, maintaining a constant operating temperature for the equipment and ensuring the compressor works continuously and efficiently.

Customizable Additive Systems:PAG formulations can be precisely engineered for diverse screw compressor applications to address specific performance criteria-including rust inhibition, corrosion protection, and anti-wear properties. This versatility is achieved through optimized additive ratios or the integration of pre-balanced additive packages.

Chorus is a professional company specializing in the sale of various PAG-based oils, compressor oil additives, and additive packages.We deliver tailored product solutions precisely aligned with your operational requirements.Meanwhile, we also offer a wide range of

PAG compressor oil additive packages. Welcome to contact us for consultations!