ROLL STABILITY OF LUBRICATING GREASE
As per ASTM D1831, D8022
Spear Roll Stability Tester is used for shear stability testing of lubricating grease.The roll stability houses four stainless steel test cylinders which is used simultaneously. Each test cylinder contains a heavy roller and is loaded with a quantity of the sample grease. The test cylinder rests horizontally upon a set of driving and guide wheels which rotate the cylinder at 165 RPM.
