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.

Qishanr Technologies Expands at Indonesia Exhibition, QISHANR Refrigeration Oil Deepens Global Layout

Oct 16th,2025 78 Views

In September 2025, shortly after the Malaysia Exhibition, Guangzhou Qishanr Technologies returned to Indonesia for the Jakarta International Refrigeration Exhibition (IndoRAC)—a core market for Southeast Asia’s robust refrigeration demand. The event attracted enterprises from 50 countries, with QISHANR’s contract volume doubling (vs. Malaysia) and 60% being long-term partnerships, solidifying its global footprint.

Eco-Friendly & High-Load Products Drive Sales

Three products aligned with Indonesia’s green policies and industrial needs led the sales:

QSL-SH46 (Semi-Synthetic PAO Type): With 45.2 cSt viscosity at 40℃ and -50℃ pour point, it is compatible with R717 (ammonia), R290 (propane), and CO₂ (R744), meeting local low-GWP requirements—securing sample testing deals with 2 Indonesian green energy firms.
QSL-220H (POE Type): Featuring 224.2 cSt viscosity at 40℃ and -30℃ pour point, it is designed for large heat pumps and high-load industrial compressors, winning bulk orders from Jakarta’s manufacturing parks.
QSL-AB68 (Alkylbenzene Type): Boasting 66.4 cSt viscosity at 40℃ and -45℃ pour point, it has excellent thermal stability, fitting industrial refrigeration in Surabaya—securing cooperation with 3 local seafood processing plants.

Regional Service Upgrade Supports Long-Term Development

Qishanr announced key service upgrades to deepen local roots:

Jakarta Regional Service Center: To be established for localized technical support and after-sales service, solving client issues in 24 hours.
Compressor Lubrication Packages: Offering integrated solutions (oil + diagnosis) to improve client equipment efficiency.

These moves not only strengthened QISHANR’s presence in Southeast Asia but also accumulated practical experience for future expansion into South American and African markets, optimizing its global service network.