Gas bearing for a rapidly rotating shaft, comprising an adjusting device for eccentrically adjusting a gas bearing and a method for operating a gas bearing of this type

A gas mounting of a rapidly rotating shaft with a tool arranged at one end,

• gas bearings arranged in a housing being present for radial mounting along the shaft, and a first gas bearing and a third gas bearing being mounted concentrically to one another and a second gas bearing, which is located in the middle between the first gas bearing and the third gas bearing, being mounted so as to be eccentrically offset to the first and the third gas bearing,
• wherein an adjusting device (1) for the increasing eccentric offset of the second gas bearing (2) at an increasing rotational speed of the shaft (3) is provided;
• and
• wherein one of two plane surfaces (31, 32) of the second gas bearing (2) contacts a plane surface (33, 34) of the first gas bearing (9) or the third gas bearing (8).

A gas mounting of a rapidly rotating shaft with a tool arranged at one end,

• gas bearings arranged in a housing being present for radial mounting along the shaft, and
• a first gas bearing and a third gas bearing being mounted concentrically to one another and a second gas bearing, which is located in the middle between the first gas bearing and the third gas bearing, being mounted so as to be eccentrically offset to the first and the third gas bearing,
• wherein an adjusting device (1) for the increasing eccentric offset of the second gas bearing (2) at an increasing rotational speed of the shaft (3) is provided;
• and
• wherein a lifting magnet or a brushless moving coil is provided for generating the radial bracing force of the adjusting device (1).

A gas mounting of a rapidly rotating shaft with a tool arranged at one end,

• gas bearings arranged in a housing being present for radial mounting along the shaft, and
• a first gas bearing and a third gas bearing being mounted concentrically to one another and a second gas bearing, which is located in the middle between the first gas bearing and the third gas bearing, being mounted so as to be eccentrically offset to the first and the third gas bearing,
• wherein an adjusting device (1) for the increasing eccentric offset of the second gas bearing (2) at an increasing rotational speed of the shaft (3) is provided;
• and
• wherein the adjusting device (1) is designed for the pneumatic generation of a radial bracing force FV, a pressure chamber (12), which is connected to a bearing gap (6, 7) via a bore (13), being provided for generating the radial bracing force FV.