Profile: D C Motors, Inc. provides wound-field and permanent magnet DC motors. Series wound DC motor speed varies automatically with the load. It increases as the load decreases. Motor characteristics are graphed for speed, horsepower and torque. It provides the starting torque required for moving large loads. The series motor uses include crane hoists, bridge & trolley drives on large overhead cranes and traction motors used to drive trains. These motors are designed to get massive amounts of weight moving. Permanent magnet DC motor features armatures that are dynamically balanced to provide smooth vibration-free operation and to reduce axial bearing loading. Armatures are dipped and baked in class F insulating varnish, insuring maximum stress protection and maintenance-free life.