Run-out measurer for bearing inner ring

The utility model relates to a run-out measurer for a bearing inner ring. The measurer comprises a control system and an actuating mechanism. The actuating mechanism comprises a motor, a transmission shaft, a fixed frame, an axial sensor and/or a radial sensor. The transmission shaft is fixedly connected with a load block for applying a load to the end face of the bearing inner ring. A guide pillar inserted into an inner hole of a bearing is arranged on the lower end part of the load block. A detection hole is formed at a position opposite to the bearing inner ring on the fixed frame. A contact of the axial sensor and/or a contact of the radial sensor are/is inserted into the detection hole. The control system comprises an industrial personal computer and a control board in communication connection with the industrial personal computer. The control board comprises an analogue/digital (A/D) acquisition module and a driving control module, wherein the A/D acquisition module is in sampling connection with the ax