Cut-away view of a small 3-phase induction motor: 1) stator core, 2) stator slot, 3) stator winding, 4) slot insulation, 5) rotor core, 6) AL squirrel cage, 7) rotor bars, 8) supply wires, 9) terminal box, 10) shaft, 11) key seat, 12) bearing, 13) bearing housing, 14) end bell, 15) outer casing, 16) lacing, 17) mounting foot, 18) cooling fan, 19) fan cover, 20) air slots, 21) rotor fins