An electric motor assembly comprising: a stator assembly comprising: a stator stack including a plurality of radially extending stator poles extending between first and second ends (18, 20) of said stator stack and defining a central rotor passage through the electric motor assembly; and a plurality of windings extending through stator slots defined between said stator poles; a rotor assembly comprising: a rotor shaft having opposing first and second ends (32, 34); and a central portion supported on said rotor shaft and extending through said central rotor passage; a first end cap located adjacent to said first end of said stator stack and supporting a first end bearing for receiving said first end of said rotor shaft; a second end cap located adjacent to said second end of said stator stack and defining a second end cap bore concentrically aligned with said central rotor passage in an axial direction; and an endbell formed separately from said second end cap and axially slidably positioned within said second end cap bore, a second end bearing located within said endbell for receiving said second end of said rotor shaft, wherein said endbell is slidably adjustable within said second end cap bore thereby providing an adjustable final axial position for the endbell to compensate for variations in the axial position of said second end bearing relative to at least one of said stator assembly and said rotor assembly. a stator assembly comprising: a stator stack including a plurality of radially extending stator poles extending between first and second ends (18, 20) of said stator stack and defining a central rotor passage through the electric motor assembly; and a plurality of windings extending through stator slots defined between said stator poles; a stator stack including a plurality of radially extending stator poles extending between first and second ends (18, 20) of said stator stack and defining a central rotor passage through the electric motor assembly; and a plurality of windings extending through stator slots defined between said stator poles; a rotor assembly comprising: a rotor shaft having opposing first and second ends (32, 34); and a central portion supported on said rotor shaft and extending through said central rotor passage; a rotor shaft having opposing first and second ends (32, 34); and a central portion supported on said rotor shaft and extending through said central rotor passage; a first end cap located adjacent to said first end of said stator stack and supporting a first end bearing for receiving said first end of said rotor shaft; a second end cap located adjacent to said second end of said stator stack and defining a second end cap bore concentrically aligned with said central rotor passage in an axial direction; and an endbell formed separately from said second end cap and axially slidably positioned within said second end cap bore, a second end bearing located within said endbell for receiving said second end of said rotor shaft, wherein said endbell is slidably adjustable within said second end cap bore thereby providing an adjustable final axial position for the endbell to compensate for variations in the axial position of said second end bearing relative to at least one of said stator assembly and said rotor assembly.