The portion of a gearmotor, which contains the actual gearing
which, converts the basic motor speed to the rated output speed.
A gearhead and motor combination to reduce the speed of the
motor to obtain the desired speed or torque.
A general-purpose motor is any motor having a NEMA “B” design,
listed and offered in standard ratings, with standard operating characteristics
and mechanical construction for use under usual service conditions without restriction
to a particular application or type of application (NEMA).
A motor with an electrical connection between the motor frame
and ground.
An open motor in which all openings giving direct access to
live or rotating parts (except smooth shafts) are limited in size by the design
of the structural parts or by screens, grills, expanded metal, etc., to prevent
accidental contact with such parts. Such
openings shall not permit the passage of a cylindrical rod ½-inch in diameter.