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Elliott's High-Speed Rotor Balance Facility
Verify mechanical integrity of the rotor prior to installation

High speed balancing provides the opportunity to optimize a rotor by simulating actual operating conditions, and to make any required corrections before the rotor is installed. High speed balancing verifies the mechanical integrity of the rotor design throughout the entire speed range prior to unit installation, and ensures smooth operation of the rotor at rated speed.

 

Elliott maintains a state-of-the-art, high-speed balance facility with an underground bunker and control room. The bunker chamber is operated under vacuum which allows balancing of fully bladed rotors (turbines, compressors, expanders, etc.) under running conditions. Our facility has two sizes of bearing pedestals that can accomodate rotor weights ranging from 130 lbs to 30,000 lbs. Both bearing pedestals can accomodate the use of either tilt-pad or liner type bearings. Elliott maintains a wide range of standard size tilt-pad journal bearings, and also designs and manufactures special bearings for non-standard applications. Click here to read pedestal specifications

 

 

The Advantages of High Speed Balance
High-speed balancing a rotor involves running a rotor to overspeed, which results in the removal of temporary static rotor bow, residual stresses and the effects of shrink fits and blade seating. Rotor components can shift as the rotor is run up to its overspeed limit, causing changes in both the vibration amplitude and phase angle. Without performing a high-speed balance, these changes would occur during the unit mechanical test or on-site. With high-speed balance, these changes occur before balance corrections are made.