FUNDAMENTALS OF LUBRICATION: PART FOUR. LUBRICANT TESTS THEIR PURPOSE AND SIGNIFICANCE Available to Purchase

A series of articles dealing, in as simple a way as possible, with the basic facts of lubrication, lubricants, their selection and prescription, specification, application, and testing. This series is primarily intended for students, engineering personnel who may be unfamiliar with certain aspects and others who, one way or another, are interested in this important subject. Part One in our March Issue dealt with Friction, Lubrication and Wear. Part Two in our July Issue dealt with Mineral Oils and their Additives. Part Three, in our September and October Issues dealt with Lubricating Greases. Part Four commenced in our December Issue and is concluded here. Part Five will deal with Non‐Newtonian Flow, Grease Consistency and Shear Stability.