Category: Grease Lubrication
Jim Fitch authored articles & papers
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How Grease Kills Bearings
What’s life like inside a rolling element bearing? Let’s say you are a dollop of grease and you’ve just been pushed by a grease gun into the dark recesses of a bearing cavity. You are now in a combat zone. What are your orders? Maybe you are on a suicide mission. Your bearing has been… Read More
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The Enduring Grease vs. Oil Debate
Many who claim to be purists tout that they prefer oil over grease. But then again, there are those die-hard grease advocates who have their own orthodoxy. Read More
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Grease Dry-out: Causes, Effects and Remedies
One of the main disadvantages of using grease over oil is the annoying tendency of grease to cake and dry out. We all know that oil has a natural tendency to drain out of the grease thickener over time. Read More
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Why You Should Inspect Bearing Grease Discharge
There are three opportunities to inspect the state of in-service grease. One is by disassembly (such as by removing the bearing cap), the second is by sampling the grease using a probe (ASTM D7718), and the third is by examining the purge discharge. Read More