additional features of the opposite lead end frame 85 the winding portion 100 is profiled to bring the casting near the windings 30 for effective heat transfer the winding portion 100 may encapsulate surround or support a potting compound surrounding the windings 30 in some embodiments and therefore may be referred to as a u201c potting portion u201d like the lead end stator cup 65 the winding portion 100 has longitudinal ribs 170 in the air path to improve heat transfer as the airflow approaches the fan inlet 205 a shelf 175 matches the outer profile of the air chute 80 and provides separation that prevents air recirculation between the air outlet at the structural ribs 110 and the air inlet 40 fig1 neither the air chute 80 nor the shelf 175 overhang the mounting flange 180 where bolts are used to mount or otherwise couple the motor to a pump or other load a top surface of the winding portion 100 has four reinforcement ribs 200 that prevent oscillation of the wall that separates the winding portion 100 and a fan compartment 185 to stabilize and improve the life of the bearing materials most external components including the canopy and air chute are made out of a plastic making these components out of plastic in combination with thermal barrier provided by the airflow path maintains the outer surfaces of the motor assembly cool to the touch fig7 illustrates a motor assembly 210 similar to that of fig1 8 but without a canopy flange or air chute similar features of the two constructions have been given the same reference numbers in this construction.