Optical measuring system

Optical measurement system, comprising:

• a base,
• a first housing body which can be rotated relative to the base about a first axis of rotation;
• a second housing body which can be rotated relative to the first housing body about a second axis of rotation;
• wherein the first axis of rotation and the second axis of rotation are orientated transversely to one another;
• wherein the second housing body contains a measurement telescope, the measurement axis of which is orientated transversely to the second axis of rotation;
• wherein the measurement system further comprises:
• an inner roller bearing support fixed to the second housing body and protruding into the first housing body;
• an outer roller bearing support fixed to the first housing body;
• a first roller bearing and a second roller bearing, the inner rings of which are fixed to the inner roller bearing support at a distance from one another, symmetrically about the second axis of rotation, wherein outer rings of the roller bearings are fixed to the outer roller bearing support, wherein the first and the second roller bearing are biased in an O arrangement;
• a drive disc fixed to the inner roller bearing support;
• a motor having a motor shaft;
• wherein the motor is attached to the first housing body in such a way that the motor shaft or a wheel fixed to the motor shaft is positioned on the drive disc and is pressed against said disc by a spring force orientated transversely to the second axis of rotation,
• wherein the motor shaft or the wheel is coupled to the drive disc in a frictional fit, and
• wherein no further bearings are provided aside from the first and second roller bearings to mount the second housing body relative to the first housing body.