To provide a support bearing capable of obtaining an improved driving characteristic and a good buffering characteristic.

This support bearing is a selectable two-chamber support bearing having a hydraulic damper, which is provided with an operation chamber and a compensation chamber divided each other with a division wall. The division wall has a penetrating opening 16 which can be closed by an adjust element on the center part thereof, and has a shock-absorbing passage connecting the operation chamber and the compensation chamber so as to make the pressure oil flow. The division wall has an opening covered with a film 12 which can be operated on both sides thereof, and the film and the division wall can be fluid-tightly fixed. The film 12 is covered with a clamping disc 15 axially moving, and the clamping disc 15 is provided with the opening 16 in an opening range 17 of the division wall, and an adjusting element 8 moves the clamping disc 15 to fix or release the film 12.