DIAGNOSTIC METHOD FOR A BALL BEARING, IN PARTICULAR FOR AN ANGULAR-CONTACT BALL BEARING, A CORRESPONDING DIAGNOSTIC SYSTEM, AND USE OF THE DIAGNOSTIC SYSTEM

摘要

In a diagnostic method for at least one ball bearing, in particular for an angular-contact ball bearing for bearing a rapidly rotating spindle, mechanical vibration caused by the respective angular-contact ball bearing is acquired by at least one vibration sensor and outputted as a corresponding vibration signal. At least one bearing characteristic, fundamental kinematic frequency dependent on a current bearing rotational frequency is determined by computation. A corresponding bearing frequency in a measurement frequency spectrum of the respective vibration signal is determined by measurement. A first diagnostic message is output when at least one of the determined bearing frequencies deviates by a respective prescribed frequency deviation from the corresponding computational fundamental kinematic frequency.