It's very much a lubrication issue. To prevent two metal surfaces from welding due to excess friction, keep them apart when expected to interact. A suitable film of lubricating oil accomplishes that. Some 50 years ago, MIT Mechanical Engineering Professor Emeritus...
Grease has been used since ancient times, and new technologies and equipment design require us to improve our understanding and perception of it. These advancements enable those working with grease to recognize better its impact, effective properties, and the proper...
Grease guns seem simple enough. But how well do you know yours? Do you know how to correctly cartridge and bulk load your gun? Do you know how to expel trapped air from it? Do you know its shot size in cc or cu in (e.g., in cubic centimeters or cubic inches)? Do you...
All bearings are destined to fail eventually. While ineffective lubrication practices are arguably the greatest contributing factor in such failures, the root cause(s) are rarely investigated due to production and maintenance turnaround demands. It's through...
Varnish is characterized as a deposit originating from the degradation of lubricating oils. These degradation byproducts are predominantly polar compounds, exhibiting inherent instability within the non-polar phase of the lubricating oil. Due to this chemical...
At an industrial level, bearings are, without a doubt, the most widely used assets in all sectors and allow a lot of critical and non-critical equipment to remain in service. Depending on the source consulted, the first wooden bearings that were discovered date back...
This presentation was presented at the Lubrication Reliability Virtual Summit on September 20, 2023 by Blair Fraser, with UE Systems. Discover how UE Systems cutting-edge technologies are revolutionizing maintenance practices, enhancing equipment performance and...
There are few definitive studies on rolling-element bearing reliability /life based on industry uses and working conditions. However, many claims indicate that most such bearings never achieve their engineered-life rating (some going as low as 10%). Most in the...
In Parts 1 and 2 of this series, we discussed the evolution of rolling element-bearing life calculations from the original work of Lundberg and Palmgren in the 1940s and 50s to the most recent ISO 281 standard, published in 2007. In particular, we talked about the...
In Part 1 of this series we talked about the evolution of rolling element bearing life calculations from the original work of Lundberg and Palmgren in the 1940s and 50's to the most recent ISO 281 standard, published in 2007. Central to the ISO 281:2007 standard is...
