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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
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#1847644
WWE WWE300-18-449TC 300HP 1800RPM 449TC FR 460
Brand WorldWide Electric
Model 300-18-449TC
Obsolete
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#1847582
WWE WWE350-18-575-586/7UZ 350HP 1800RPM 586/7UZ FR 575
Brand WorldWide Electric
Model 350-18-575-586/7UZ
Obsolete
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#5121719
AURORA 4TEP364T-60 4POLE 60HP 364T TEFC
Brand Aurora Motors
Model 4TEP364T-60
$2,035.56 Each
Free Shipping
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#5058357
AURORA 4WP1HS07.5SE 7.5HP 1800RPM 230/460 213TP
Brand Aurora Motors
Model 4WP1HS07.5SE
$898.19 Each
Free Shipping
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$702.83 Each
Free Shipping
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Obsolete
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Obsolete
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Obsolete
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#727288
Leeson LM28203
Brand Leeson
Model LM28203
Obsolete
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$8,757.22 Each
Free Shipping
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$8,835.92 Each
Free Shipping