Large roller bearing and method and device for monitoring such a large roller bearing

An apparatus for monitoring a rolling bearing, comprising:

• a sensor system for determining a divergence angle between the bearing rings of the rolling bearing;
• an evaluation device for evaluating the sensor signals of the sensor system;
• and
• a control device for specifying different rotational positions of the bearing rings with respect to one another and different load states in each rotational position;
• wherein the evaluation device is configured to evaluate the rotational-angle-specific and load-specific divergence angles determined by the sensor system in the different rotational positions for the different load states and to compare them with one another and/or with at least one reference value, and on the basis of the comparison, to determine a state of wear and/or the remaining service life of the rolling bearing.

A rolling bearing comprising:

• an open-centre large rolling bearing, comprising:
• two bearing rings rotatable relative to one another and supported against one another by at least one roller bearing row;
• a sensor system for determining a divergence angle between the bearing rings, and
• an evaluation device for evaluating the sensor signals of the sensor system;
• a control device for specifying different rotational positions of the bearing rings with respect to one another and different load states in each rotational position;
• wherein the evaluation device is configured to evaluate the rotational-angle-specific and load-specific divergence angles determined by the sensor system in the different rotational positions for the different load states and to compare them with one another and/or with at least one reference value, and on the basis of the comparison, to determine a state of wear and/or the remaining service life of the rolling bearing.