Lube-Tips | | | | | | | In This Issue | - Colored Washer Ensures Grease Matches Application
- The Foundation of a Good Oil Analysis Program
- Four Common Myths Related to Varnish Removal
- Can a Lubricant Trigger Corrosion?
| | Colored Washer Ensures Grease Matches Application | | | To ensure that the proper lubricant is used in a bearing, use a thin, colored washer at the fitting and paint the grease gun the same color as the washer. To install the washer, unscrew the grease fitting – find a washer with an inner diameter a little larger than the outer diameter of the threaded shaft of the fitting. Insert the fitting into the washer and screw in the washer/fitting assembly. To ensure that the correct lubricant is being used, try using colored, plastic grease caps. These fit right on the grease fitting and also help keep dirt and/or water off the grease fitting and, hence, out of the bearing. The color-coding can be used for the type of grease or the frequency. They cost only a few cents each. Join us for Fundamentals of Machinery Lubrication
in Dallas, Texas, on January 25-27. |
| The Foundation of a Good Oil Analysis Program | | | Test your knowledge and prepare for ICML lubrication and oil analysis certification. Question: What is the first step in developing an effective oil analysis program? | GET THE ANSWER
| Varnish has emerged as one of the deadliest oil contaminants in industry. Just like heat, particle and moisture contamination, varnish acts as a so-called soft contaminant that severely impacts lubrication and machine reliability. A major issue is that varnish is known to be smaller than the size ratings of most filters and, therefore, can’t be removed using conventional pore-size-related filtration. For better understanding, this article addresses four common myths related to varnish removal. | FULL STORY
| From the book "Lubricating Grease Guide" by the National Lubricating Grease Institute: As applied to lubrication, corrosion includes the deterioration of metal surfaces by chemical attack. This may be caused by some ingredient in the lubricant, or by external factors. Thus, sulfur compounds in lubricants may corrode copper or lead, while alkali in lubricants may attack aluminum and other metals. To test the effect of petroleum products on copper, ASTM D130 has long been used. This method was found to need minor modification when applied to lubricating greases. Thus, a new method, D4048, has been standardized as a grease method. Of more widespread interest, though, is that specialized form of corrosion commonly called rusting. When iron or steel is in contact with water and air, or aerated water, the metal may become rusted. If the water contains salt or acid, rusting is more rapid and more serious. When a grease-lubricated bearing surface comes in contact with water, that surface may become stained, then rusted (such staining can be the first stage of rusting). Rusting may be controlled, or even prevented, by incorporating a suitable rust inhibitor into the lubricant. Read more about "Lubricating Grease Guide" |
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