Electric spindle and machine tool

The utility model provides a motorized spindle and machine tool, it includes: shaft core, flange, bearing and displacement sensor, the bearing sleeve is provided with the shaft core periphery and relatively close to the axial front end of shaft core, the flange is provided with the shaft core periphery, the flange includes first part, second part and third part, the second part is provided with the first part, the second part is provided with the second part, and the third part is provided with the displacement sensor. The first part is located at one axial end of an outer ring of the bearing and abuts against the outer ring, the second part is connected to the axial end, away from the outer ring, of the first part, and at least part of the third part is structurally connected to the periphery of the second part. At least part of the structure of the axial end, away from the first part, of the second part is recessed to form a first groove, and at least part of the structure of the displacement sensor is arra