Parts One and Two in this series, which appeared in our February and March issues, dealt with Viscosity, Penetrometers, Rheometers, Penetration Methods, Limits and Variations, etc. The fourth part will cover miscellaneous properties, tests for which are included in modern specifications. Readers are reminded that Mr. Ellis's book, “Lubricant Testing—Introducing Recent Developments in Testing Technique” will be published very shortly.
ELLIS, E.G. (1953), "laboratory evaluation of lubricating greases: PART THREE TORSIONAL INSTRUMENTS, TORQUE/SPEED CURVES, THERMAL EFFECTS, etc.", Industrial Lubrication and Tribology, Vol. 5 No. 5, pp. 18-23. https://doi.org/10.1108/eb052231
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