Cone Penetration of Lubricating Grease

These test methods covers measuring the consistency of lubricating greases by the penetration of a cone of specified dimensions, mass, and finish. The penetration is measured in tenths of a millimetre. The grease is worked for sixty double strokes or as per the requirement in the grease worker. The penetration is determined immediately after by releasing the cone assembly from the penetrometer and allowing the cone to drop freely into the grease for specified time.