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ISO 26422:2011

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Petroleum and related products — Determination of shear stability of lubricating oils containing polymers — Method using a tapered roller bearing

Published By Publication Date Number of Pages
ISO 2011-03 14
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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.

ISO 26422:2011
$19.50