Method for measuring bearing clearance of output component

The invention discloses a method for measuring the bearing clearance of an output component, and belongs to the field of bearing clearance installation and detection. Comprising the following steps: step 2, calculating to obtain a range of tensile strain values applied to a measuring shaft section of an output shaft under the required axial clearance of an output upper bearing and an output lower bearing; a strain gauge is attached to the measuring shaft section between the output upper bearing and the output lower bearing, and the strain gauge is connected with a strain analyzer; 3, tightening torque is slowly applied to the round nut, when the tensile strain value displayed by the strain analyzer is within the range of the tensile strain value calculated in the step 2, tightening torque application is stopped, and at the moment, the axial clearance of the output upper bearing and the output lower bearing reaches the standard. By adopting the method, the tensile strain of the output shaft is measured, the ax