Squeeze film damper bearing

摘要

A squeeze film damper bearing comprises a bearing bush (2) for supporting a rotary shaft (1), a bearing casing (3) extending around the bearing bush (2) and concentricity spring (4) between the bearing bush (2) and the bearing casing (3), the inner surface of the bearing casing (3) being provided with a circumferential groove (3a) at least partially accommodating the spring (4). The spring (4) comprises an elongate steel sheet (4a) with a plurality of recesses (4b) formed in one surface to provide a plurality of longitudinally aligned projections (4c) on the other surface. The steel sheet (4a) is bent into a cylindrical shape. Each of the projections (4c) has a curved surface (4d) with a generating line extending substantially parallel to the rotary shaft (1).