Device for installing and removing a roller supporting a bearing assembly

A device for mounting a bearing assembly (3), which comprises a chock and a roll neck bearing mounted in the chock, on a roll neck (1) of a backup roll of a rolling stand and for dismounting a bearing assembly (3) from the roll neck (1) of the backup roll of the rolling stand, wherein an anchorage fixture (5), which extends in the axial direction of the roll, acts on the roll neck (1), the anchorage fixture (5) supports a washer (6) that is axially displaceable on the anchorage fixture (5), which washer (6) is directly supported at one end on a nut (8) that can be moved on the anchorage fixture (5) by screwing and at the other end on the bearing assembly (3);

• a hydraulic pretensioning tool (16) can be temporarily assigned to the nut (8) and can apply a mounting force between the anchorage fixture (5) and the washer (6), which is supported on the bearing assembly (3), a dismounting unit (11) can be temporarily coupled with the bearing assembly (3);
• and a hydraulic cylinder (15) of the dismounting unit (11) can be supported on the roll neck (1).