Aircol PD
Air Compressor Lubricants
Description
Castrol Aircol™ PD oils are a range of compressor lubricants, based upon highly refined mineral oils, which are intended
for the lubrication of both reciprocating and rotary air compressors.
Application
Aircol PD 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 PD 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).
- discharge temperatures > 165°C
- differential pressures > 2.5 MPa (25 bar)
- discharge pressures > 7.0 MPa (70 bar)
Aircol PD 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 PD 32 and 46 are suitable for oil flooded rotary compressors,
whereas Aircol PD 68
and 100 would be selected for lubricating the crankcase and cylinders of reciprocating compressors.
Aircol PD 150 is
recommended for sliding-vane compressors, or for reciprocating units at high ambient temperatures.
The Aircol PD range is fully compatible with nitrile, silicone and fluropolymer seal materials.
Aircol PD is classified as follows:
- DIN 51506 classification - VDL
- ISO 6743/3 - DAA and DAB for reciprocating air compressors, DAG for rotary air compressors
Advantages
- Good water separation characteristics allows condensation to readily separate from the oil, minimising the risk of emulsions which could block the oil separator element.
- Fully inhibited against corrosion which enables protection even when operating under humid conditions.
- Good thermal stability, low volatility and low carbon formation reduces the risk of fire and explosion and leads to a longer operating life (up to 2000 hours).
- Low deposit forming tendencies extends oil change intervals and provides longer air filter life which contributes to a reduction in maintenance costs.
- Excellent coalescing properties mean little carry over of oil in the air stream.
Additional Information
Castrol Aircol PD compressor oils are available in a wide range of viscosities, to suit different types of compressors
operating in varying ambient temperatures. Selection of the required viscosity grade should be based upon the
compressor manufacturers recommendations for the appropriate ambient temperature range, which will have been
chosen to provide the best compromise between maintaining a fluid film between the working surface and minimising the
amount of power absorbed by fluid friction in this oil film.
Aircol PD
15 May 2012
Castrol, the Castrol logo and related marks are trademarks of Castrol Limited, used under licence.
This data sheet and the information it contains is believed to be accurate as of the date of printing. However, no warranty or representation, express or implied, is
made as to its accuracy or completeness. Data provided is based on standard tests under laboratory conditions and is given as a guide only. Users are advised
to ensure that they refer to the latest version of this data sheet. It is the responsibility of the user to evaluate and use products safely, to assess suitability for the
intended application and to comply with all applicable laws and regulations. Material Safety Data Sheets are available for all our products and should be
consulted for appropriate information regarding storage, safe handling, and disposal of the product. No responsibility is taken by either BP plc or its subsidiaries
for any damage or injury resulting from abnormal use of the material, from any failure to adhere to recommendations, or from hazards inherent in the nature of the
material. All products, services and information supplied are provided under our standard conditions of sale. You should consult our local representative if you
require any further information.
Castrol Industrial, Technology Centre , Whitchurch Hill , Pangbourne , Reading , RG8 7QR , United Kingdom
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