Abstract: A rotor (2) for a forced-air-cooled electric motor, in particular a universal motor, especially for use with electrical power tools, has a laminated armature (6) incorporating longitudinal slots (8) and with wire windings of a coil (10) protruding from the longitudinal slots (8) on the front face where the windings form coil connecting heads (20, 22). Some or all of the longitudinal slots (8) in the laminated armature (6) contain a rod (28) aligned in the longitudinal direction and protruding axially from one or both front faces (24, 26) of the laminated armature (6), whereby the protruding rod ends thus surround the coil connecting heads (20, 22) on the respective front face to protect the coil connecting heads from abrasive wear.

Abstract: A rotor (2) for a forced-air-cooled electric motor, in particular a universal motor, especially for use with electrical power tools, has a laminated armature (6) incorporating longitudinal slots (8) and with wire windings of a coil (10) protruding from the longitudinal slots (8) on the front face where the windings form coil connecting heads (20, 22). Some or all of the longitudinal slots (8) in the laminated armature (6) contain a rod (28) aligned in the longitudinal direction and protruding axially from one or both front faces (24, 26) of the laminated armature (6), whereby the protruding rod ends thus surround the coil connecting heads (20, 22) on the respective front face to protect the coil connecting heads from abrasive wear.

Abstract: The invention relates to a method for mounting an armature laminated core (6) on an armature shaft (2) for an electric motor, the armature shaft (2) being formed either from electrically insulating solid plastic or being a shaft which is sheathed with an electrically insulating plastic (10), the sheath (8) having a thickness of at least 1 mm, and having the following features: manufacture of armature cores (12) whose central opening (14) for the armature shaft (2) has a non-round cross section with at least one radially inwardly extended projection (20), the diameter of an inscribed circle (22) which forms a clear cross-sectional area of the opening (14) being smaller than the external diameter of the armature shaft (2); pressing of the armature cores (12) onto the armature shaft (2) in the axial direction (16) of the armature shaft (2) with the at least one projection (20) sinking into the surface of the plastic (10)