DC Motors

DC motors are configured in many types and sizes, including brushless, servo, and gearmotor types. A motor consists of a rotor and a permanent magnetic field stator. The magnetic field is maintained using either permanent magnets or electromagnetic windings. DC motors are most commonly used in variable speed and torque applications.

Brushed DC motors have built-in commutation, meaning that as the motor rotates, mechanical brushes automatically commutate coils on the rotor. Brushless DC motors use an external power drive to allow commutation of the coils on the stator. Brush-type motors are used when cost is a priority, while brushless motors are selected fulfill specific requirements, such as maintenance-free operation, high speeds, and hazardous environments where sparking could be dangerous.

DC gearmotors are configured in many types and sizes, including brushless and servo. A DC gearmotor consists of a rotor and a permanent magnetic field stator and an integral gearbox or gearhead. The magnetic field is maintained using either permanent magnets or electromagnetic windings. DC motors are most commonly used in variable speed and torque applications.

Motion and controls covers a wide range of components that in some way are used to generate and/or control motion. Areas within this category include bearings and bushings, clutches and brakes, controls and drives, drive components, encoders and resolvers, Integrated motion control, limit switches, linear actuators, linear and rotary motion components, linear position sensing, motors (both AC and DC motors), orientation position sensing, pneumatics and pneumatic components, positioning stages, slides and guides, power transmission (mechanical), seals, slip rings, solenoids, springs.

Motors are the devices that provide the actual speed and torque in a drive system.  This family includes AC motor types (single and multiphase motors, universal, servo motors, induction, synchronous, and gear motor) and DC motors (brushless, servo motor, and gear motor) as well as linear, stepper and air motors, and motor contactors and starters.

• Crouzet DC Motor Tech Guide (.pdf)
  Many applications call for a high start-up torque. The DC motor, by its very nature, has a high torque vs. falling speed characteristic and this enables it to deal with high starting torques and to...
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• BLDC Ducted-Fan Motor for Unmanned Vehicles
  A high-efficiency brushless ring motor developed by ThinGap Corporation of Ventura, California based on its patented electromotive coil technology promises to reduce energy consumption, allowing such...
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• Breakthrough in DC Motor Technology Allows Innovation in Appliance Design and Manufacture
  During the past decade, executives have cut operational costs to the point, there is little left to cut. Costs cuts have almost been eliminated as a strategy for increasing profitability. To create...
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Part Numbers for DC Motors