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Description: Most industrial motors require AC (alternating current) voltage whose polarity oscillates 60 times a second (for a frequency of 60 Hertz) between positive and negative. Single phase AC motors have brushes just like DC motors. Most of them have capacitors to assist starting and to establish the direction of rotation. Changing direction implies changes in the capacitors’ connection. Speed is directly proportional to the applied voltage (just like DC motors). Usage is restricted to low-power uses (home appliances like vacuum cleaners, washing machines, coffee grinders, or power tools like rotary hammers etc.). For higher power requirements, three-phase AC motors are used. These do not have carbon brushes to wear out, their rotors (called squirrel cages) have no electrical connections, thus making them extremely robust and long-lived. Only the stator windings are connected to the power line. They just keep turning as long as their ball bearings are OK. Changing direction requires swapping any two of the three phase lines. Speed control is done by modifying the frequency of the AC delivered to the motor; this can be done using complex devices called AC drives.
Item ID
Item
Price
Quantity
Big_card_vertical
#5763138
$180.20 Each
Free Shipping
Big_card_vertical
#726986
Leeson LM17599
Brand Leeson
Model LM17599
Obsolete
Big_card_vertical
#727153
Leeson LM22908
Brand Leeson
Model LM22908
Obsolete
Big_card_vertical
#727303
Leeson LM28218
Brand Leeson
Model LM28218
Obsolete
Big_card_vertical
#727369
Leeson LM30680
Brand Leeson
Model LM30680
Obsolete
Big_card_vertical
#727377
Leeson LM30724
Brand Leeson
Model LM30724
Obsolete
Big_card_vertical
#727398
Leeson LM30756
Brand Leeson
Model LM30756
Obsolete
Big_card_vertical
#225337
Big_card_vertical
Big_card_vertical
$20,326.23 Each
Free Shipping
Big_card_vertical
$7,140.44 Each
Free Shipping
Big_card_vertical
$988.55 Each
Free Shipping