Patent ID: 8631728

Claim:
A method for manufacturing at least two radial centering surfaces on an outer circumference of an annular laminated core of a stator, comprising the steps of forming a cuboid laminated core by laminating strip-shaped laminations and bending the laminations round to form an annular shape of the core, wherein the annular-shaped core is a stator with a hollow cylindrical form and a central axis extending between first and second opposing axial ends; preloading the laminated core axially before cutting and during cutting; creating the centering surfaces on an outer circumference by cutting the annular laminated core with at least two cutting tools, and positioning the at least two cutting tools such that one cutting tool cuts a centering surface starting at the first axial end of the stator and another cutting tool cuts another centering surface starting at the second axial end of the stator, wherein the at least two radial centering surfaces on said outer circumference of the annular laminated core are created from both sides of the laminated core.