Electric motor

An electric motor comprising:

• a stator operable to produce a magnetic field, the stator defining an opening;
• and
• a rotor at least partially disposed within the opening, the rotor including,
• a shaft extending along a rotational axis;
• a plurality of first core portions each including a plurality of laminations stacked contiguously on the shaft;
• a second core portion coupled between each of the first core portions, at least the first core portions and the second core portion cooperating to define a rotor magnetic core;
• a plurality of windings coupled to the rotor magnetic core;
• and
• an air flow path partially defined by the first core portions, the second core portion, and the shaft, the air flow path including an axial portion that passes through the shaft axially along the rotational axis and a radial portion that extends radially outward through the second core portion.

A power tool comprising:

• a housing;
• an electric motor disposed within the housing including,
• a stator operable to produce a magnetic field, the stator defining an opening;
• and
• a rotor at least partially disposed within the opening, the rotor including,
• a shaft extending along a rotational axis;
• a plurality of first core portions each including a plurality of laminations stacked contiguously on the shaft;
• a second core portion coupled between each of the first core portions, at least the first core portions and the second core portion cooperating to define a rotor magnetic core;
• a plurality of windings coupled to the rotor magnetic core;
• and
• an air flow path partially defined by the first core portions, the second core portion, and the shaft, the air flow path including an axial portion that passes through the shaft axially along the rotational axis and a radial portion that extends radially outward through the second core portion.