The part of a motor that houses the bearing supporting the rotor and acts as a protective guard to the internal parts of the motor; sometimes called endbell, endplate or end bracket.

Independent United States testing organization that sets safety standards for motors and other electrical equipment.

An AC drive with enhanced processing capability that provides positioning accuracy and fast response to speed and torque changes. Often used with feedback devices in a closed-loop system.

A unit of electromotive force that, when applied to conductors, will produce current in the conductors.

A device that creates mechanical motion by converting various forms of energy to rotating or linear mechanical energy.

A mechanical, fluid or electrical device that variably changes an input speed to an output speed matching operating requirements.

Standards setting organization composed of gear products manufacturers and users. AGMA standards help bring uniformity to the design and application of gear products.

Voltage that opposes line voltage caused by induced magnetic field in a motor armature or rotor.

The power supply usually available from the electric utility company or alternators.

The power supply available from batteries, generators (not alternators), or a rectified source used for special applications.