Motor Metrology: DC vs. AC Efficiency
Looking strictly at wattage ratings can be highly deceptive when evaluating heavy baking hardware. The Kenwood utilizes a high-velocity 800W AC motor, which relies on rotational speeds coupled with gear reductions to generate mixing force.
Conversely, the KitchenAid Commercial 8-Quart implements a specialized 500W DC motor. DC motors generate maximum torque at their lowest structural speeds. This means that while it draws less raw power from the wall, its internal steel-gear transmission delivers incredible, unyielding torque to a dense bread dough without generating heat or mechanical strain.