The history of lubricating greases dates back to ancient times. As early as 1400 BC, attempts were made to reduce axle friction in chariots. Analyses from axel hubs indicate that fat and lime were used to make a complex lubricant.1 Yet, the current state of lubricating greases only has less than a century of history. The first patents were issued during World War II. Clarence E. Earle, a researcher with the U.S. Naval Testing Station, applied for patents on lithium soap grease. Significance of his work can be seen still today; globally, well over 70% of lubricating greases produced are based on lithium technology.
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