A stepper motor uses a magnetic field to move a rotor. Stepping can be done in full step, half step or other fractional step increments. Voltage is applied to poles around the rotor. The voltage changes the polarity of each pole, and the resulting magnetic interaction between the poles and the rotor causes the rotor to move. Stepper motors provide precise positioning and ease of use, especially in low acceleration or static load 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, 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 motor types (brushless, servo motor, and gear motor) as well as linear, stepper and air motors, and motor contactors and starters.