Abstract: A scanning measuring device, in particular a laser scanner, profiler, total station or tracker, comprising at least a base for the placement of the device, a housing mounted on the base, a shaft mounted in the housing such that it can rotate about an axis of rotation and bearing a beam deflection unit in a rotationally fixed manner, a beam generating unit, which generates a transmitted beam which is transmitted into the environment by the beam deflection unit, a beam receiving unit, which receives a received beam reflected from the environment, a controllable positioning means which drives the shaft, wherein the shaft is supported by at least one pair of angular contact rolling bearings set in an O arrangement, and the angular contact rolling bearings are arranged on the shaft such that the rolling contact lines of the associated angular contact rolling bearings meet substantially on the axis of rotation.

Abstract: A scanning measuring device, in particular a laser scanner, profiler, total station or tracker, comprising at least a base for the placement of the device, a housing mounted on the base, a shaft mounted in the housing such that it can rotate about an axis of rotation and bearing a beam deflection unit in a rotationally fixed manner, a beam generating unit, which generates a transmitted beam which is transmitted into the environment by the beam deflection unit, a beam receiving unit, which receives a received beam reflected from the environment, a controllable positioning means which drives the shaft, wherein the shaft is supported by at least one pair of angular contact rolling bearings set in an O arrangement, and the angular contact rolling bearings are arranged on the shaft such that the rolling contact lines of the associated angular contact rolling bearings meet substantially on the axis of rotation.

Abstract: Some embodiments of the invention relate to a rotation unit for a surveying device, in particular a laser scanner for optically scanning an environment and such a surveying device. The surveying device has a rotation unit having a rotation mirror, for deflecting an emission light beam and a reception light beam, and a rotation body implemented as a cylinder having a on a beveled, free end. The rotation body is implemented as a hollow cylinder having a cylinder bottom and a beveled cylinder wall on its free end. The hollow cylinder is connected coaxially with respect to its cylinder axis in a rotationally-fixed manner to a motor-driven shaft via the cylinder bottom. The rotation mirror is fastened in the region of its free end to the cylinder wall of the hollow cylinder so it is supported thereby.

Abstract: Some embodiments of the invention relate to a rotation unit for a surveying device, in particular a laser scanner for optically scanning an environment and such a surveying device. The surveying device has a rotation unit having a rotation mirror, for deflecting an emission light beam and a reception light beam, and a rotation body implemented as a cylinder having a on a beveled, free end. The rotation body is implemented as a hollow cylinder having a cylinder bottom and a beveled cylinder wall on its free end. The hollow cylinder is connected coaxially with respect to its cylinder axis in a rotationally-fixed manner to a motor-driven shaft via the cylinder bottom. The rotation mirror is fastened in the region of its free end to the cylinder wall of the hollow cylinder so it is supported thereby.