ISO 65211 specifies the minimum requirements for mineral or synthetic based lubricants intended for use in reciprocating and drip feed rotary air compressors (vane compressors) with the compression chamber(s)/cylinders lubricated by direct lubricant injection.
ISO 65211- Specifications of categories DAA and DAB is useful for:
Lubricants for compressors are used in various compressor designs. The lubricants for these applications can vary in composition, from straight mineral oils to more complex blends, based on mineral oils, synthetic oils (e.g. poly α-olefins, esters, poly-glycols), and additives. The additives most currently used are antioxidants, rust and copper corrosion inhibitors. They can be supplemented by detergents and dispersing additives to improving the cleanliness of the hottest parts of the compressors, e.g. the inlet and the exhaust valves in reciprocating compressors.
These lubricants are also able to lubricate the mechanical parts of the compressors (crankshaft and connecting rods bearings, crossheads, rolling bearings).
ISO-L-DAA air compressor oils as specified ISO 6521-1 in are refined mineral oils with suitable oxidation and corrosion inhibitors. They can also contain some additional detergent additives to improve the cleanliness of the exhaust valve systems in reciprocating compressors. They are intended to lubricate reciprocating and rotary air compressors.
ISO 6521-1 provides specifications for ISO-L-DAB air compressor oils which are either refined mineral oils, part-synthetic or synthetic oils with suitable oxidation and corrosion inhibitors. They may also contain some additional detergent additives to improve the cleanliness of the exhaust valve systems in reciprocating compressors. They are intended to lubricate reciprocating and rotary air compressors.
ISO 6521-1