What type of refrigeration oil should I use for my screw compressor?

Screw compressors typically require POE (Polyol Ester) oils for HFC refrigerants like R134a and R407C, or mineral oils for HCFC systems like R22. The viscosity grade (usually ISO VG 32-68) depends on the compressor manufacturer's specifications. Brands like Bitzer recommend BSE series POE oils, while FUSHENG systems often use mineral oil formulations.

What is the difference between POE and mineral refrigeration oil?

POE (Polyol Ester) oils are synthetic lubricants designed for HFC refrigerants (R134a, R404A, R407C, R410A) and are hygroscopic, requiring careful moisture control. Mineral oils (MO) are petroleum-based, used with CFC and HCFC refrigerants (R22, R502), and are less expensive but incompatible with modern HFC systems. POE oils offer better thermal stability and miscibility with newer refrigerants.

How do I select the right refrigeration oil for a centrifugal chiller?

For centrifugal chillers, select oil based on the OEM specification (e.g., Trane OIL00037, York PureOil S), the refrigerant type (R123 low-pressure or R134a medium-pressure), and the required viscosity grade. Most modern centrifugal chillers use POE oils with ISO VG 32-68. Always verify compatibility with the chiller manufacturer's technical bulletin and ensure the oil meets the required pour point for your operating conditions.

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FAQ-Refrigeration Lubricants Oil

Help you learn more and faster

What series of refrigeration oils can you supply?

POE, PAG, PVE, PAO, AB, MO, Environmental Refrigeration Oil.

What certifications do you have?

CE, CO.

Do you support OEM services?

Yes. Custom packaging and material selection are available.

Can I replace my current oil with yours?

Yes. Please provide your original unit model, and we will recommend the equivalent type after technical analysis.

Why choose to cooperate with you?

Full product range for mid‑to‑high end compressors, performance matches international top brands.
Stable quality with independent R&D synthetic esters; complete export certificates.
Strong technical support, OEM/ODM, logistics and export compliance assistance.
Stable supply and long‑term price advantages.

Can I be an agent/distributor of your refrigeration oils?

Yes. We are looking for global partners with market protection support. Welcome to be our agent if your region is available.

About Us: Refrigeration Lubricants Solutions

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Contact Us: RM202, B2 Building, No.2 Jiaoxin Songbaili Gaopu Industrial Zone Road, Baiyun District, Guangzhou-510430, China; info@qishanr.com; +86-186 6560 5628

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