Abstract 

ISO 26422:2011 specifies a method of determining the shear stability of polymer-containing lubricating oils, including pressure fluids, by the four-ball tester as specified in ISO 20623, but using a tapered roller bearing. The test results allow prediction of the in-service permanent viscosity loss.


General information

  • Status :  Withdrawn
    Publication date : 2011-03
  • Edition : 1
    Number of pages : 9
  • Technical Committee
    :
    ISO/TC 28
    Petroleum and related products, fuels and lubricants from natural or synthetic sources
  • ICS :
    75.100
    Lubricants, industrial oils and related products

Life cycle


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