Industrial Mechanic (Millwright) Red Seal Glossary – Essential Trade Terms &
Definitions
agitator - ✔✔a device which keeps material moving in a tank or vessel; the movement may be
required to prevent settling and to mix material
arc of contact - ✔✔surface contact between the sheave, the pulley and the belt, or the
sprocket and the chain
axial flow - ✔✔to flow along the axis of a fan or a pump
babbitt - ✔✔material used in plain friction bearings (usually lead-based)
backlash - ✔✔amount of clearance between mating teeth
bearing - ✔✔device that allows two parts to rotate or move in contact with each other
blower - ✔✔device that moves air at low or high pressures and volumes
centrifugal flow - ✔✔to flow 90 degrees to the axis of a fan or a pump away from the centre
clutch - ✔✔device used to engage or disengage a driver to a driven unit
condition-based monitoring methods - ✔✔methods to identify issues not realized by sensory
inspection, real-time data
Definitions
agitator - ✔✔a device which keeps material moving in a tank or vessel; the movement may be
required to prevent settling and to mix material
arc of contact - ✔✔surface contact between the sheave, the pulley and the belt, or the
sprocket and the chain
axial flow - ✔✔to flow along the axis of a fan or a pump
babbitt - ✔✔material used in plain friction bearings (usually lead-based)
backlash - ✔✔amount of clearance between mating teeth
bearing - ✔✔device that allows two parts to rotate or move in contact with each other
blower - ✔✔device that moves air at low or high pressures and volumes
centrifugal flow - ✔✔to flow 90 degrees to the axis of a fan or a pump away from the centre
clutch - ✔✔device used to engage or disengage a driver to a driven unit
condition-based monitoring methods - ✔✔methods to identify issues not realized by sensory
inspection, real-time data
