Roll stability Apparatus for Lubricating Grease

This method determines the cone penetration of an approximately 50-gram sample of lubricating grease. The grease is then subjected to low shear at a temperature of 20 to 35°C (68 to 95°F) for 2 hours ± 5 minutes in a standard roll stability apparatus, after which the cone penetration is measured again. The difference in cone penetration before and after the rolling process is used to evaluate the effect of flow shear on grease consistency. This apparatus is ideal for testing the change in consistency of lubricating grease after working on the roller tester to assess the mechanical shear stability of the grease.