More Causes and Remedies of Fluid Film Bearing Failure
Kingsbury's very popular brochure, "General Guide To Hydrodynamic Bearings," covers the background and invention of the tilting pad fluid film bearing, the types of fluid film bearings in common use and a comprehensive section on the diagnosis and troubleshooting of bearing problems.
Machine Improvements from Directed-Lube Journal Bearings
This paper, co-authored by Kingsbury's R&D Manager, Scan DeCamillo, presents experimental temperature data on the LEG (Leading Edge Groove) journal bearing for both "on pad" and "between pad" loading conditions and for different bearing clearances.
Performance Comparison of LEG and Flooded Bearings
Kingsbury's equalized LEG thrust bearings are fitted with leveling plates to ensure optimum load distribution and trouble free operation, while taking advantage of other features such as offset pivots to achieve the best possible performance.
Any change in load, shaft speed, oil flow, oil inlet temperature, or bearing surface finish affects bearing temperature. In turn, excessively high temperatures in the shoe babbitt metal can lead to costly bearing failures caused by wiping of the babbitt.
Changes in load, shaft speed, oil flow, oil inlet temperature, or bearing surface finish can affect bearing surface temperatures. At excessively high temperatures, the shoe babbitt metal is subject to wiping, which causes bearing failure.
When your thrust bearing is running hot it is natural to think that there is something wrong with it but that is not always the case. Bearing performance information can give you the symptoms of what is wrong with your machine.
Non-equalizing thrust bearings can only tolerate a limited amount of misalignment and still continue to operate. For this reason, you should learn how to determine the maximum amount of misalignment before the bearing's performance is adversely affected.
The purpose of thrust bearing end play is to provide axial clearance between the thrust collar and the thrust bearing assemblies. The end play allows room for the formation of an oil film, misalignment, and thermal expansion of the bearing components. End play is the total distance the shaft can move between the two thrust bearings and is sometimes called float, thrust bearing clearance or axial clearance.