Non-concentric rings for reduced turbo-machinery operating clearances

Rings having holes with a centerline offset from the centerline of the outer diameter, or other diameter piloting feature of the ring (i.e., non-concentric rings) may be used to align rotating components within their static components. Two non-concentric rings may be used to support a bearing that contains a shaft there through to allow for maximum offsets between a desired centerline of the rotating component and an actual, assembled centerline of the rotating component. Adjustment of the rotor centerline relative to the static structure centerline may be obtained without disassembly of the rotor assembly or static structure assembly.