Ceiling Fan Terms
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CEILING FAN TERMS
Bearings
Blade Pitch
Blade Sweep
Downrod
Light Kit
Motor
Bearings: Ceiling fan bearings separate the moving part of the motor from the housing around it and reduce friction and wear. Ceiling fan bearings are precisely formed spheres of hard metal or composite that revolve as the motor spins against them.
High-quality bearings contribute to quiet, vibration-free operation and long life.
Blade Pitch: The angle of the blades on a ceiling fan. This helps determine the efficiency of the air movement produced by the ceiling fan.
Blade Sweep: Diameter of the ceiling fan, from blade tip to blade tip.
Downrod: The ceiling fan downrod is the pipe that suspends the fan from the ceiling box. Most fans include a very short downrod; other lengths and extenders are available so you can hang the fan at the desired height.
Light Kit: Ceiling fan light kits are accessories that attach to the bottom of a fan, providing a choice of lighting options.
Motor: The heart of every ceiling fan is its motor. An electric motor converts electric energy into mechanical energy into mechanical energy, or motion. Most fan motors can be reversed to change the airflow pattern. The quality of a ceiling fan is heavily determined by the quality of the motor.
There are 2 types of fan motors. The most common is called a "pancake," after its flat shape. Pancake motors are described by size: diameter x height. "Stacked" motors, with a more elaborate construction, are used in some premium fans.
For more information, please see "How to Select the Perfect Ceiling Fan."
