McMaster-Carr logo
    Filter by
    System of Measurement
    Electrical Phase
    Frequency
    Shaft Diameter
    Attribute Image
    Mounting Location
    Shaft Type
    Shaft Center-to-Base Length
    Attribute Image
    Shaft Length
    Attribute Image
    Enclosure Material
    Environment
    Inverter Rated
    Direction of Operation
    Power Source
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    19 Products

    Base-Mount AC Motors

    Image of Product. Motor with Totally Enclosed Enclosure. Front orientation. Electric Motors. Base-Mount AC Motors.
    Image of Product. Motor with Open Enclosure. Front orientation. Electric Motors. Base-Mount AC Motors.

    Motor with Totally

    Enclosed Enclosure

    Motor with Open Enclosure

    Image of Attribute. Front orientation. Contains Annotated. Base-Mount AC Motors.
    Image of Attribute. Side1 orientation. Contains Annotated. Base-Mount AC Motors.
    To get equipment moving, bolt the base of these motors to any flat surface and connect the shaft to your load. They’re rated for continuous duty, so they’re often used with equipment that requires constant power, like fans, pumps, and conveyors.
    Motors with a NEMA frame size have an oversized shaft and high-quality bearings to stand up to heavy and side loads better than even our domestic motors. Densely packed windings and thin laminations ensure the motor stays cool and runs efficiently.
    Motors with an IEC frame size meet international standards for electrical products. Their compact body fits in tight spaces.
    Inverter Rated—When pairing with a variable frequency drive (AC motor speed control), choose a three-phase motor that’s inverter rated.
    Open Dripproof (ODP) Motor Enclosure—Open dripproof (ODP) enclosures have vents that let air flow over the motor, which keeps it cool and helps it run efficiently. Use them in clean, dry environments—the enclosure blocks drips and debris that fall from above, but dust and moisture can pass through the vents.
    Totally Enclosed Fan-Cooled (TEFC) Motor Enclosure—Totally enclosed fan-cooled (TEFC) enclosures don’t have vents, so they can be used in wet and dirty environments. They have an external fan that blows air over the outside of the enclosure to keep the motor cool. They’re not airtight, but since air isn’t flowing inside the enclosure, the motor won’t run as efficiently as it would in an open enclosure.
    Overall
    Shaft
    Insulation
    Power,
    hp
    Max. Rotation
    Speed, rpm
    Full Load
    Current
    Inverter
    Rated
    Motor Enclosure Type
    Lg.
    Wd.
    Ht.
    Dia.
    Lg.
    Ctr. to
    Base
    Type
    Base
    Type
    Class
    Max. Temp.,
    ° F
    Each
    230V AC/460V AC, Three Phase
     
    NEMA 184T
    53,48011.4 amp/5.7 ampYesTotally Enclosed Fan-Cooled (TEFC)15 3/4"12 1/8"10 1/2"1 1/8"2 3/4"4 1/2"KeyedWeldedF3117014N630000000
    7 1/23,46517.3 amp/8.6 ampYesOpen Dripproof (ODP)13 3/4"12 1/8"10 1/2"1 1/8"2 3/4"4 1/2"KeyedWeldedF3117014N77000000
     
    NEMA 182T, NEMA 184T
    51,74013.1 amp/6.6 ampYesTotally Enclosed Fan-Cooled (TEFC)16 1/2"11 1/2"10 3/8"1 1/8"2 3/4"4 1/2"KeyedWeldedF3117014N26000000
    51,75013.6 amp/6.8 ampYesOpen Dripproof (ODP)14 3/8"11 1/4"10 3/8"1 1/8"2 3/4"4 1/2"KeyedWeldedF3117014N25000000
     

    US-Made Base-Mount AC Motors

    Image of Product. Motor with Open Enclosure. Front orientation. Electric Motors. US-Made Base-Mount AC Motors.

    Motor with Open Enclosure

    Image of Product. Motor with Totally Enclosed Enclosure. Front orientation. Electric Motors. US-Made Base-Mount AC Motors.

    Motor with Totally

    Enclosed Enclosure

    Image of Attribute. Front orientation. Contains Annotated. US-Made Base-Mount AC Motors.
    Image of Attribute. Side1 orientation. Contains Annotated. US-Made Base-Mount AC Motors.
    Wound, wired, and assembled in the U.S. These base-mount motors are manufactured for durability and include high-quality bearings, so they hold up to occasional overload conditions and spikes in torque. Rated for continuous duty, they’re often used with equipment that requires constant power, such as fans, pumps, and conveyors. Bolt the base of these motors to any flat surface and connect the shaft to your load.
    Enclosures that are open have vents that let air flow over the motor, which keeps it cool and helps it run efficiently. Use them in clean, dry environments—the enclosure blocks drips and debris that fall from above, but dust and moisture can pass through the vents.
    Enclosures that are totally enclosed don’t have vents, so they can be used in wet and dirty environments. They’re not airtight, but since air isn’t flowing inside the enclosure, the motor won’t run as efficiently as it would in an open enclosure.
    Inverter Rated—When pairing with a variable frequency drive (AC motor speed control), choose a three-phase motor that’s inverter rated.
    Open Dripproof Tandem Fan (ODTF) Motor Enclosure—Open dripproof tandem fan (ODTF) enclosures also have an external fan that blows air over the motor.
    Open Slotted Band (OPSB) Motor Enclosure—Open slotted band (OPSB) enclosures only have vents.
    Totally Enclosed Fan-Cooled (TEFC) Motor Enclosure—Totally enclosed fan-cooled (TEFC) enclosures have an external fan that blows air over the outside of the enclosure to keep the motor cool.
    Automatic—Automatic overload protection starts the motor automatically after it cools.
    Overload Protection Type—Motors with overload protection turn off in overload conditions to prevent motor damage.
    Drip Covers—Drip covers are recommended when your motor will be mounted with the shaft facing down. They attach to the back side of the motor to prevent moisture from pooling on top.
    Motors
    Drip Covers
    Overall
    Shaft
    Insulation
    Power,
    hp
    Max. Rotation
    Speed, rpm
    Full Load
    Current
    Inverter
    Rated
    Motor Enclosure Type
    Lg.
    Wd.
    Ht.
    Dia.
    Lg.
    Ctr. to
    Base
    Type
    Base
    Type
    Overload Protection
    Type
    Class
    Max. Temp.,
    ° F
    Each
    Each
    208V AC/230V AC, Single Phase
     
    NEMA 184T
    51,72522.7 amp/20.6 ampNoOpen Dripproof Tandem Fan (ODTF)16 3/4"11 1/4"11 1/4"1 1/8"2 3/4"4 1/2"KeyedWeldedF3115990K1140000000005990K4050000000
     
    230V AC, Single Phase
     
    NEMA 184T
    31,75011.2 ampNoOpen Slotted Band (OPSB)16 1/2"11 1/4"11 1/4"1 1/8"2 3/4"4 1/2"KeyedWeldedF3115990K143000000005990K405000000
     
    230V AC/460V AC, Three Phase
     
    NEMA 184T
    51,75013.2 amp/6.6 ampYesOpen Slotted Band (OPSB)16 1/2"11 1/4"9"1 1/8"2 3/4"4 1/2"KeyedWeldedAutomaticF3115990K312000000005990K405000000
    51,75013.4 amp/6.7 ampYesTotally Enclosed Fan-Cooled (TEFC)18 1/4"11 1/4"11"1 1/8"2 3/4"4 1/2"KeyedWeldedF3115990K314000000005990K406000000
     

    Adjustable Motor Mounts

    Image of Product. Style A. Front orientation. Motor Mounts. Style A.

    Style A

    Maximize your belt-driven system’s efficiency while minimizing wear on bearings, pulleys, and other components. Made in the U.S., these adjustable mounts secure motors in the perfect position for proper belt tension. Make fine adjustments or tension the belt with a quick turn of the screw, hex nut, or hand crank. Choose a mount that fits the NEMA frame of your motor, which is listed on the nameplate.
    For Constant Motor Speeds—These mounts keep motors tightly secured while operating equipment with a fixed speed, such as fans. You can only adjust the motor position when your system is off.
    Style
    For Motor Frame
    Size
    For Max.
    Power, hp
    Mounting
    Position
    Max.
    Adjustment
    Adjustment
    Mechanism
    Tensioning
    Type
    Lg.
    Wd.
    Ht.
    Each
    For Linear Adjustment for Constant Motor Speeds
    ANEMA 184, NEMA 184T7 1/2Horizontal3"Cap ScrewManual12 3/4"10 1/2"1 1/2"62035K25000000
     

    Programmable Base-Mount Speed-Control Motors

    Image of Product. Front orientation. Electric Motors. Programmable Base-Mount Speed-Control Motors.
    Image of Attribute. Front orientation. Contains Annotated. Programmable Base-Mount Speed-Control Motors.
    Image of Attribute. Side1 orientation. Contains Annotated. Programmable Base-Mount Speed-Control Motors.
    Save space in your control panel with a variable-frequency drive and motor in one unit. These motors require less wiring than motors that need to be attached to a separate drive. They have a base mount that’s welded to the enclosure, so you can secure them to a flat surface. Program the drive to start, stop, change speed, and reverse direction based on inputs from a PLC or sensor. These motors are often used to start or stop a conveyor based on PLC commands or vary the speed of a fan to maintain a room’s temperature.
    The shaft is keyed and comes with key stock. Rated for continuous duty, these motors can run machines that require constant power. All have automatic overload protection, which turns motors off if they become overheated and restarts them once they’ve cooled.
    An IE5 efficiency rating means these motors and drives are rated for the highest efficiency available. From partial to full output, they'll use less electricity than motors with other ratings.
    Download free software to control and monitor them in real time. Connect them to your computer via Bluetooth or use a PC connection cord to plug them into a USB port. To integrate them into larger control systems, these motors can be programmed using Modbus-RTU and BACnet protocols.
    Totally Enclosed Fan-Cooled (TEFC) Motor Enclosure—These motors also have totally enclosed fan-cooled (TEFC) enclosures, which don’t have vents, so you can install them in damp and dirty environments. An external fan blows air over the outside of the enclosure to keep these motors cool.
    Overall
    Shaft
    Insulation
    Power,
    hp
    Max. Rotation
    Speed, rpm
    Full Load
    Current
    Inverter
    Rated
    Motor Enclosure Type
    Lg.
    Wd.
    Ht.
    Dia.
    Lg.
    Ctr. to
    Base
    Type
    Base
    Type
    Overload Protection
    Type
    Component
    Class
    Max. Temp.,
    ° F
    Enclosure
    Rating
    Each
    460V AC, Three Phase
     
    NEMA 184T
    7 1/23,4508.8 ampYesTotally Enclosed Fan-Cooled (TEFC)18 1/4"10 5/8"14"1 1/4"3 1/2"4 1/2"KeyedWeldedAutomaticController, MotorF311IP54
    7124N18000000000
     
    230V AC, Three Phase
     
    NEMA 184T
    53,45010.5 ampYesTotally Enclosed Fan-Cooled (TEFC)16 3/4"10 5/8"14"1 1/4"3 1/2"4 1/2"KeyedWeldedAutomaticController, MotorF311IP54
    7124N1700000000
     
    Accessories for Electric Motors

    Shaft Grounding Rings

    Image of ProductInUse. Shaft Grounding Ring Shown Installed. Front orientation. Grounding Rings.

    Shaft Grounding Ring Shown

    Installed

    Image of Product. One Piece. Front orientation. One Piece.

    One Piece

    Image of Product. Two Piece. Front orientation. Two Piece.

    Two Piece

    Prevent motor downtime by protecting bearings from stray currents generated by variable frequency drives. These grounding rings create a path for stray currents, so they won't damage bearing surfaces. Use them on AC motors.
    One Piece—One-piece rings slide on from the end of the shaft.
    Two Piece—Two-piece rings simplify installation when motors are connected to equipment.
    One Piece
    Two Piece
    For Shaft
    Dia.
    For Motor Frame
    Size
    Mounting Hardware
    Included
    Includes
    Each
    Each
    Aluminum
    1 1/8"NEMA 182T, NEMA 184TYes16 Brackets (4 each of 4 Common Styles)4805N1300000004805N240000000
     
    Accessories for Grounding Rings
    back to top