Castrol Aircol CM 68

CASTROL Aircol CM 68 previously Aircol PD 68

Rotary Screw Compressor Lubricant

Application CASTROL Aircol CM 68

Aircol CM 68 grades are ashless oils recommended for the lubrication of rotors, bearings and gears in rotary compressors, especially the oil flooded screw type with lubricant drain cycles of up to 2000 hours under normal use. Normal use in screw type compressors is defined by a maximum air discharge temperature =/< 100°C as defined by ISO 6743-3:2003. Aircol CM 68 can be used for either normal or severe duty lubrication of reciprocating and rotary drip-feed air compressors, as defined by ISO 6743. Normal duty is described as:- discharge temperatures =/< 165°C; differential pressures =/< 2.5 MPa (25 bar); discharge pressures =/< 7.0 MPa (70 bar). Severe Duty is described as:- discharge temperatures > 165°C; differential pressures > 2.5 MPa (25 bar); discharge pressures > 7.0 MPa (70 bar). Aircol CM 68 compressor oils exhibit low carbon forming tendencies and meet the requirements of the DIN 51506 VDL classification for reciprocating compressors having air discharge temperatures up to 220°C. Selection of the required viscosity grade should be based upon the compressor manufacturers’ recommendation. However as a general guide Aircol CM 68 would be selected for lubricating the crankcase and cylinders of reciprocating compressors. The Aircol CM 68 is fully compatible with nitrile, silicone and fluropolymer seal materials. Aircol CM 68 is classified as follows: DIN 51506 classification - VDL; ISO 6743/3 - DAA and DAB for reciprocating air compressors, DAG for rotary air compressors. Aircol CM 68 meets the requirements (for appropriate viscosity grade) of major compressor manufacturers such as Atlas Copco, Champion, Sullair, Compair/Broomwade, Ingersoll-Rand, Kaeser and Bauer.