ASTM D1264 test method for water washout characteristics of lubricating greases
3. Summary of Test Method
3.1 The grease is packed into a ball bearing, the bearing is then inserted in a housing with specified clearances, and rotated at 600 more or less 30 rpm. Water, controlled at the specified test temperature, impinges on the bearing housing at a rate of 5 more or less 0.5 mL/s. The amount of grease washed out in 60 more or less 1 min is a measure of the resistance of the grease to water washout.
4. Significance and Use
4.1 This test method estimates the resistance of greases to water washout from ball bearings under conditions of the test. No correlation with field service has been established.
