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Refrigeration oil of ADDINOL

Refrigeration oils (or refrigeration machine oils) are used in air conditioning systems and compressors that use refrigerants such as R717a, R402a, etc. The refrigeration machine oil lubricates all moving parts of the refrigeration compressor, especially the roller bearings of the compressors. Other tasks of the refrigeration oil are, for example, heat dissipation from hot components and sealing of the compression chamber. It is necessary for refrigeration machine oils to form a homogeneous bond with the refrigerant over a wide range of temperatures and concentrations. All ADDINOL refrigerating machine oils consist of fully synthetic oils based on aromatic hydrocarbons.

The refrigeration oils are suitable for various types of screw, reciprocating and turbo compressors. Possible applications are industrial plants, cold stores, breweries, large slaughterhouses and refrigerator ships.

Our refrigeration oils

ADDINOL REFRIGERATION OIL XKS 46

Viscosity:

ISO VG 46

Specifications / Approvals:

DIN 51503-1 (KAA), DIN 51503-1 (KC), DIN 51503-1 (KE), ISO 6743-3 (DRA), ISO 6743-3 (DRC), ISO 6743-3 (DRG), Bitzer refrigerating machines

ADDINOL REFRIGERATION OIL XKS 46

ADDINOL REFRIGERATION OIL XKS 68

Viscosity:

ISO VG 68

Specifications / Approvals:

DIN 51503-1 (KAA), DIN 51503-1 (KC), DIN 51503-1 (KE), ISO 6743-3 (DRA), ISO 6743-3 (DRC), ISO 6743-3 (DRG), Bitzer refrigerating machines

ADDINOL REFRIGERATION OIL XKS 68

ADDINOL REFRIGERATION OIL XKS 100

Viscosity:

ISO VG 100

Specifications / Approvals:

DIN 51503-1 (KAA), DIN 51503-1 (KC), DIN 51503-1 (KE), ISO 6743-3 (DRA), ISO 6743-3 (DRC), ISO 6743-3 (DRG)

ADDINOL REFRIGERATION OIL XKS 100

What are refrigerating machines?

Refrigerating machines are a special type of compressor. In the machines, a refrigerant is used to generate cold steam, which is responsible for the cooling breeze in air conditioning systems in cars, for example. In the past, ozone-depleting substances such as CFCs were used for refrigeration. Nowadays, the refrigerants used in refrigeration systems do not pose a risk to the ozone layer or the greenhouse effect. Most systems in automobiles are operated with the non-toxic R 134a.

Industrial air conditioning system
Refrigeration oil is required for industrial air conditioning systems

What properties do refrigeration machine oils need?

The requirements for refrigerating machine oils are specified in DIN 51503 T. Various groups are defined there, which result from the combination with the refrigerator used.

  • KA - for compressors with ammonia
  • KC - for compressors with CFC and HCFC (mineral oils and synthetic oils)
  • KD - for compressors with CFC and HCFC (ester and polyglycols)
  • KE - for compressors with hydrocarbons (propane and isobutane)

The following properties are generally important for refrigeration machine oils:

  • Low pour point for use in frosty temperatures
  • Excellent mixing behaviour with refrigerants
  • Very good thermal and chemical stability
  • Good lubricity
  • Excellent heat dissipation
  • Prevention of paraffin separation
  • Long life of the lubricant

How must refrigeration oil be disposed of?

As refrigerator oil may also contain shares of dissolved refrigerants, it is essential that the waste oil is collected separately and disposed of in a shatterproof container at a waste oil collection point of your choice. Mixing with other waste oils, such as engine oils, is not permitted, as the possible contamination by refrigerants makes it impossible to recycle the lubricants.

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Hans-Jürgen Scholz

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