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Ball
Bearing
PE employs state of the art analytical software to predict the performance
of rolling element bearings under real loading conditions, including
accounting for the effects of misalignment, preload, and end play.
Analysis can be extended to shaft systems with several bearings. Previous
projects have included analysis followed by extensive testing in a
PE designed load cell instrument stand and an extensive program of
forensic diagnostics.
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Angular
Contact Bearing
PE employs state of the art analytical software to predict the performance
of rolling element bearings under real loading conditions, including
accounting for the effects of misalignment, preload, and end play.
Analysis can be extended to shaft systems with several bearings.
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Roller
Bearing
PE employs state of the art analytical software to predict the performance
of rolling element bearings under real loading conditions, including
accounting for the effects of misalignment, preload, and end play.
Analysis can be extended to shaft systems with several bearings.
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Thrust
Bearing
PE has extensive experience in the analysis, alignment,
adjustment and modification of large thrust bearings. Equipment
worked on includes spring loaded bearings (GE, ASEA, Toshiba, etc.),
adjustable load cells with self leveling plates (Westinghouse, Kingsbury),
and self leveling bearings (Mitchell, Hitachi). PE's software allows
calculation of load carrying capability, pressure distributions
& film thicknesses based on lubricant and bearing geometry.
PE team members have authored several papers
and articles where bearing pads and bearing supports are analyzed
and improved.
 
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Spherical
Bearing
PE employs state of the art analytical software to predict the performance
of rolling element bearings under real loading conditions, including
accounting for the effects of misalignment, preload, and end play.
Analysis can be extended to shaft systems with several bearings.
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Journal
Bearing (hydrodynamic)
PE has extensive
experience in the analysis, specification, alignment, adjustment and
modification of hydrodynamic and hydrostatic journal bearings. PE's
software allows calculation of load carrying capability, pressure
distributions, effect of grooves, cavitation risk & film thicknesses
based on lubricant properties and bearing geometry. In one case, PE's
unique solution to reduce seal wear in a large pump turbine included
modifying clearances and groove configurations on journal bearings
to effectively reduce the size of shaft orbits and thereby minimize
seal wear.
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Hydrostatic
Bearing
PE has extensive experience in the analysis, specification, alignment,
adjustment and modification of hydrostatic bearings. PE's software
allows calculation of load carrying capability, pressure distributions,
effect of grooves, cavitation risk & film thicknesses based on
lubricant properties and bearing geometry. PE has designed and implemented
several hydrostatic lift oil systems in vertical thrust bearings.
Other capabilities include evaluating the feasibility of modifying
hydrodynamic oil-lubricated bearings to hydrostatically water-lubricated
bearings
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Bearing
Lift Oil Design
PE has designed and modified many thrust bearing lift oil systems.
End product consists of design drawings for shoe modifications and
complete hydraulic system specification and drawings. Final configuration
is optimized based on historical and experimental bearing performance
data. PE team members have authored several papers and articles where
bearing lift oil system performance is analyzed and then modifications
implemented to solve problems.
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Bearing
Adjustment, Alignment and Leveling
PE's historical expertise is in the alignment and adjustment of machine
train centerlines. Bearing leveling and adjustment are an integral
facet of this process, and over the years the PE team has adjusted,
leveled and realigned thousands of large thrust and journal bearings.
PE team has authored many papers and articles on this subject.
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Bearing
Diagnostics, Troubleshooting, Forensics and Repair
PE specializes
in system analysis and diagnostics. PE has extensive forensic laboratory
capabilities required to identify the root cause of failures and
sub-optimum performance. PE systems and team approach results in
tribologically sound problem solutions.
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Bearing
Lubrication
PE's software allows calculation of minimum and average oil film thicknesses
and load carrying capability. Analysis and optimization of fluid viscosity,
viscosity index and pressure viscosity coefficient are routinely performed.
Chemical analysis and tribological considerations are a particular
PE forte
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Bearing
Design and Specification
PE combines a thorough systems understanding with state of the art
analytical capabilities to design and specify optimum bearings for
our Clients' applications.
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Bearing
Oil Whip and Whirl Identification and Mitigation
PE combines vibration analysis test equipment and troubleshooting
expertise with bearing analytical tools to diagnose and mitigate oil
whip and whirl problems. PE team members have authored papers documenting
successful diagnostic and repair programs in this subject area.
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Adjustable
Load Cell Refurbishment and Instrumentation
PE maintains a laboratory and shop to refurbish thrust bearing load
cells with calibrated, state of the art, strain gauge transducers
and wiring harnesses. Implementation of these instrumented strain
gages results in precise machinery alignment and load distribution.
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