| 摘要 |
PROBLEM TO BE SOLVED: To provide an abnormality diagnosis system capable of relatively readily discovering an abnormality in an early stage and designating a diagnostic threshold, a bearing, a swivel device, industrial machinery, and a vehicle.SOLUTION: A difference value between an initial frequency component, which is a feature frequency component relating to an abnormality of an object of abnormality diagnosis of a swivel device 2 which is extracted from among initial vibration values that are measured at the initial measurement timing while the swivel device 2 is in action and are obtained when an axle 21 is rotating at a designated rotating speed, and an actual frequency component, which is a feature frequency component extracted from among actual vibration values that are measured at the actual measurement timing succeeding the initial measurement timing while the swivel device 2 is in action and are obtained when the axle 21 is rotating at the designated rotating speed, is computed. The difference value is compared with a diagnostic threshold. Based on the result of the comparison, abnormality diagnosis is performed on the object of abnormality diagnosis.SELECTED DRAWING: Figure 2 |
