Anti-rotation squeeze film damper bearing assembly

A squeeze film damper bearing assembly comprising:

• a bearing;
• a spring cage that receives and surrounds the bearing, the spring cage having an inner diameter and an opposite outer diameter, the bearing coupled to the inner diameter, the outer diameter having an outer surface that defines a first circumferential channel recessed within the outer surface that is axially spaced apart from a second circumferential channel recessed within the outer surface and a first radial anti-rotation chamber defined in the first channel;
• a first piston ring received in the first channel, the first piston ring having a first notch defined to face the first channel;
• a second piston ring received in the second channel;
• and
• at least one anti-rotation member received within the first radial anti-rotation chamber that cooperates with the first notch to inhibit a rotation of the first piston ring relative to the outer surface.

A squeeze film damper bearing assembly, comprising:

• a bearing;
• a spring cage that receives and surrounds the bearing, the spring cage having an inner diameter and an opposite outer diameter, the bearing coupled to the inner diameter, the outer diameter having an outer surface that defines a first circumferential channel recessed within the outer surface that is axially spaced apart from a second circumferential channel recessed within the outer surface and at least one axial anti-rotation chamber that interconnects the first channel and the second channel;
• a first piston ring received in the first channel;
• a second piston ring received in the second channel;
• at least one anti-rotation member received within the at least one axial anti-rotation chamber that cooperates with the first piston ring and the second piston ring to inhibit a rotation of the first piston ring and the second piston ring relative to the outer surface;
• and
• a mounting flange coupled to the spring cage by a plurality of fingers, and the plurality of fingers is arranged in at least one group, with the at least one axial anti-rotation chamber defined so as to be circumferentially offset from the at least one group,
• wherein the squeeze film damper bearing assembly extends along a longitudinal axis and the at least one axial anti-rotation chamber is parallel to the longitudinal axis.