by John Erbicella | Aug 7, 2019 | Publications
By leveraging the pressures that can be generated in the gaps of externally pressurized porous (EPP) gas bearings, a new class of seal offers capabilities not previously available. EPP gas bearings have been used in other industries for decades, but they are now being...
by John Erbicella | Aug 7, 2019 | Publications
During the first century of centrifugal compressor design, changes were evolutionary. A centrifugal compressor from 1900 looks very much like a centrifugal compressor manufactured in the year 2000 with regards to the location of compression stages, seals, bearings and...
by John Erbicella | Sep 14, 2018 | Publications
Externally pressurized gas bearings have not been the first choice of turbo equipment designers. Aerodynamic bearings, like foil bearings or dry gas seals, are much more popular in use. Externally Pressurized Aerostatic bearings do have advantages though, especially...
by Brooke Richards | Nov 8, 2017 | Publications
In the continuing effort to improve the capability and reliability of compression equipment, it may be fruitful to look beyond the best-in-class solutions traditionally available within the compression industry. In some industries, like the manufacturing of computer...
by Brooke Richards | Nov 3, 2017 | Publications
Bently Bearings are pressurized air bearings that provide non-contact support for rotors during balancing operations. Specifically, the device produces a consistent signal that is exactly the same for each revolution, allowing for finer resolution during balancing...
by Brooke Richards | Oct 31, 2017 | Publications
Rotordynamics is the study of the vibration characteristics of a rotating shaft supported on bearings. In almost all cases, the object is to predict and then reduce or eliminate actual rotor vibrations. A rotor spinning frictionlessly on a perfect axis of rotation...
