PROBLEM TO BE SOLVED: To enable assembly with a steel material as it is without an assembly surface transparent when assembling a thrust bearing to a rotation testing device or the like with high accuracy.;SOLUTION: A probe 62 which can perform ultrasonic transmission and ultrasonic reception is arranged at a position facing a rolling element 19 of a thrust bearing 10 in an axial direction with a support member 33 held therebetween, echo intensity at the time of rotation of the probe 62 in a circumferential direction and a rotation angle of the probe 62 are measured over the whole circumference, and the inclination of the support member 33 is detected on the basis of the measurement result.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2016,JPO&INPIT
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