FUCHS: Highly effective R744 MAC refrigeration oil

By R744.com team, Feb 12, 2009, 11:46 2 minute reading

The world's leading independent supplier of lubricants is now presenting its newly developed RENISO ACC 46 lubricant for next-generation CO2 Mobile Air Conditioning systems on R744.com. It ensures optimal wear protection even under heavy operating conditions.

FUCHS’ new lubricant for transcritical CO2 Mobile Air Conditioning (MAC), RENISO ACC 46, is a fully synthetic refrigeration oil based on special polyalkylene glycols (PAG). Its highly effective special additive systems ensure optimal wear protection especially under extreme operation conditions. The oil was especially developed for high-pressure vehicle air conditioning systems operating with CO2, as it has an excellent solubility and miscibility with this natural refrigerant, but can also be used in subcritical applications. It features a high thermal and chemical stability under CO2-atmosphere, and allows for sufficient oil reflux from the system at low evaporating temperature. The life expectancy and reliable operation of R744 MAC compressors will thus be significantly enhanced by RENISO ACC 46.

The good viscosity-temperature behaviour, excellent deep-temperature flowability and reliability even at high temperature levels of RENISO ACC 46 have been proven in a wide variety of trial and prototype systems. The lubricant was developed in close cooperation with compressor manufacturers, air conditioning experts and the German automotive industry. In addition to extensive car field tests, FUCHS has evaluated the oil at own testing facilities, including roller bearing tests under 50 bar CO2 pressure atmosphere at various elevated oil temperature levels. The result is a double-end capped PAG base fluid with a unique additive system to reduce wear and to improve the lubricant’s ageing stability under high-temperature conditions that guarantees reliable performance in both dry and humid conditions.

Basic Specifications

Main features of RENISO ACC 46 are:
  • Density at 15°C (kg/m3): 1004
  • Flashpoint (°C): 226
  • Kinematic viscosity (mm2/s): 44 (at 40°C); 9.2 (at 100°C)
  • Viscosity index: 201
  • Pour point (°C): -48
  • Water content (mg/kg): max. 250

FUCHS EUROPE SCHMIERSTOFFE GMBH, founded in 1931 as a family firm in Mannheim, Germany, is a group member of the globally operating FUCHS PETROLUB AG, and the world's leading independent supplier of lubricants and specialities. The company offers lubricants for a huge variety of applications, including automotive lubricants, metalworking fluids, corrosion preventives, greases and industrial oils.

Nina Burhenne / R744.com


By R744.com team (@r744)

Feb 12, 2009, 11:46

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