M00006056
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ISO 26422:2011 Petroleum and related products - Determination of shear stability of lubricating oils containing polymers - Method using a tapered roller bearing
standard by International Organization for Standardization, 03/15/2011
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Availability date: 2021-11-25
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.