Portable fault diagnosing device for rolling bearing

The utility model relates to a bearing detecting and diagnosing device and specifically relates to a portable fault diagnosing device for a rolling bearing. The portable fault diagnosing device for the rolling bearing includes a hardware system and a software system. The hardware system includes an acceleration sensor arranged on a bearing pedestal. The acceleration sensor is connected with a signal modulator and a data collecting card. The data collecting card is connected with a computer through a data cable. The software system includes a data collecting module, a bearing parameter module and a signal processing module. The portable fault diagnosing device for the rolling bearing provided by the utility model has advantages that the portable fault diagnosing device for the rolling bearing is small in detection device size, low in manufacturing cost and convenient to operate. At the same time, by using the portable fault diagnosing device for the rolling bearing, diagnosis with comparatively high precision can be realized.