Static assembling gap measuring device and method for bearing of aeroengine

The invention relates to a static assembling gap measuring device and method for a bearing of an aeroengine. The measuring device comprises capacitance sensors, the capacitance sensors are arranged in holes of a sealed cover of the aeroengine respectively, the sealed cover is cooperated with a bearing installation nut, the bearing installation nut is fixed on the bearing, holes are formed in the top and left and right sides of the ring surface of the sealed cover, the capacitance sensors are placed in the sealed cover, each capacitance sensor comprises a probe and an installation portion positioned at one side of the probe, the probe enters the corresponding hole, the installation portion is connected with a lead to transmit data measured by the capacitance sensor, the capacitance sensor measures a voltage value between the bearing installation nut and the sealed cover, and thus, the minimal gap value between the bearing installation nut and the sealed cover and the offset position and angle of the bearing ar