Performance Is What Counts
After the 2006 installation, not only did the Waukesha AMB system meet the customer’s primary goals, but it proved to operate safely in its environment: 25,000 hours later, the units’ operation provides 99.9% availability to its end user. In addition, Waukesha’s canned bearings temperature ratings reached 165°C, compared to 130°C for competitor’s canned bearings.
A key advantage of canned magnetic bearings and corrosion resistant auxiliary bearings is the ability to be immersed in the process gas. Canned bearings allow for the placement of the magnet core and windings behind a pressure rated, impervious barrier constructed of corrosion resistant alloy (e.g., Inconel) or other non-metallic material that is not susceptible to chemical attack by the process gas and condensates. Thus, electrical components are not exposed to the process conditions. This allows the motor compressor to eliminate the use of dry gas seals, avoiding natural and sour gas damage to the environment.