A device that creates mechanical motion by converting various
forms of energy to rotating or linear mechanical energy.
Adjustable Speed Drive:
A mechanical, fluid or electrical device that
variably changes an input speed to an output speed matching operating
requirements.
AGMA (American Gear Manufacturers Association):
Standards
setting organization composed of gear products manufacturers and users.
AGMA standards help bring uniformity to the design and application of
gear products.
Air-Over (AO):
Motors for fan or blower service that are cooled by the
air stream from the fan or blower.
Alternating Current (AC):
The standard power supply available from
electric utilities.
Ambient Temperature:
The temperature of the air which, when coming
into contact with the heated parts of a motor, carries off its heat. Ambient
temperature is commonly known as room temperature.
Ampere (Amp):
The standard unit of electric current. The current produced
by a pressure of one volt in a circuit having a resistance of one ohm.
Armature:
The rotating part of a brush-type direct current motor.
In an induction motor, the squirrel cage rotor.
Axial Movement:
Often called “endplay.” The endwise movement of
motor or gear shafts. Usually expressed in thousandths of an inch.
