DS/ISO 26422:2011
Petroleum and related products - Determination of shear stability of lubricating oils containing polymers - Method using a tapered roller bearing

Standard No.

DS/ISO 26422:2011

Release Date

2011

Published By

Danish Standards Foundation

Latest

DS/ISO 26422:2011

Scope

This International Standard specifies a method of determining the shear stability of polymer-containinglubricating oils, including pressure fluids, by the four-ball tester as specified in ISO 20623, but using a taperedroller bearing. The test results allow prediction of the in-service permanent viscosity loss.NOTE Other international standards for the evaluation of viscosity loss of polymer containing oils exist. The methodspecified in this International Standard subjects fluids to a higher shear rate than, e.g., the diesel injector nozzle shear testISO 20844 [4]. It is particularly appropriate for lubricants being used in high shear applications, such as c

DS/ISO 26422:2011 history

• 2011 DS/ISO 26422:2011 Petroleum and related products - Determination of shear stability of lubricating oils containing polymers - Method using a tapered roller bearing