McMaster-Carr logo
    Filter by
    System of Measurement
    Body Shape
    Motor Frame Size
    Number of Shafts
    Enclosure Material
    Shaft Length
    Overall Width
    Full Step Increment
    Number of Wire Leads
    Face Shape
    Overall Height
    Motor Type
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    45 Products

    Economy Stepper Motors

    Often used in prototyping, these light duty stepper motors deliver precise, repeatable motion. Their shaft turns in small, equal increments, similar to the hands of a clock. When the shaft stops, it holds its position even when a counteracting force is applied to the load. You can control the position of the load without having to configure encoders or sensors. All are bipolar hybrid stepper motors, so the current can flow in both directions. This helps them deliver higher precision than unipolar stepper motors.
    All motors require a controller and drive (not included).
    Motors
    Image of Product. Front orientation. Stepper Motors. Economy Stepper Motors.
    Image of Attribute. Front orientation. Contains Annotated. Economy Stepper Motors, Motors.
    Image of Attribute. Side1 orientation. Contains Annotated. Economy Stepper Motors, Motors.
    Maximum Holding Torque—Holding torque is the force needed to move the shaft out of position when it is stationary. When the shaft is in motion, torque generally decreases as speed increases. Use a torque-speed curve to confirm which motor will work for your application. Click on a part number and select “Product Detail” to view the curve for a motor.
    Full Step Increment—Full step increment is the rotation of the shaft from one position to the next. A smaller full step increment means the rotor has more teeth, producing smoother and more precise motion. 1.8° is considered standard.
    Overall
    Shaft
    Max. Holding
    Torque, in·ozf
    Max. Rotation
    Speed, rpm
    Max. Current
    per Phase, amp
    Full Step
    Increment
    Stepper Motor
    Polarity
    No. of Wire
    Leads
    Lg.
    Wd.
    Ht.
    Dia.,
    mm
    Lg.,
    mm
    Ctr.-to-Base
    Lg.
    Type
    No. of
    Shafts
    Min.
    Temp.
    Each
    Square Body
     
    NEMA 23 Frame Size
    1251,00021.8°Bipolar43"2.2"2.2"6211.1"Solid1Not Rated4798N13000000
     

    Clean Room Stepper Motors

    Deliver precise, repeatable motion in applications where contamination is a concern, such as semiconductor manufacturing. These motors meet the strictest clean room standards—all components are cleaned and assembled in a clean room and stored in vacuum sealed packaging. Made of treated aluminum, they minimize gas and particle emission in your clean room’s environment. They're often used in vacuum chambers, where low particle emission prevents the vacuum from degrading. Similar to the hands of a clock, the shaft on these stepper motors turns in small, equal increments for smooth motion. When the shaft stops, it holds its position even when a counteracting force is applied to the load. You can control the position of the load without having to configure encoders, sensors, or other position feedback devices. All are bipolar hybrid stepper motors, so the current can flow in both directions. This helps them deliver higher torque, precision, and efficiency than unipolar stepper motors.
    All motors require a controller and drive (not included).
    Motors
    Image of Product. Front orientation. Stepper Motors. Clean Room Stepper Motors.
    Image of Attribute. Front orientation. Contains Annotated. Clean Room Stepper Motors, Motors.
    Image of Attribute. Side1 orientation. Contains Annotated. Clean Room Stepper Motors, Motors.
    Maximum Holding Torque—Holding torque is the force needed to move the shaft out of position when it is stationary. When the shaft is in motion, torque generally decreases as speed increases. Use a torque-speed curve to confirm which motor will work for your application. Click on a part number and select “Product Detail” to view the curve for a motor.
    Full Step Increment—Full step increment is the rotation of the shaft from one position to the next. A smaller full step increment means the rotor has more teeth, producing smoother and more precise motion. 1.8° is considered standard.
    Overall
    Shaft
    Temp.
    Range, ° F
    Max. Holding
    Torque, in·ozf
    Max. Rotation
    Speed, rpm
    Max. Current
    per Phase, amp
    Full Step
    Increment
    Stepper Motor
    Polarity
    No. of Wire
    Leads
    Lg.
    Wd.
    Ht.
    Dia.,
    mm
    Lg.,
    mm
    Type
    No. of
    Shafts
    Vacuum Rating,
    Torr
    Min.
    Max.
    Clean Room
    Std.
    Each
    Square Body
     
    NEMA 23 Frame Size
    1811,3002.81.8°Bipolar43.1"2.3"2.3"621D-Profile11× 10^-70120ISO Class 1
    		4799N15000000000
    2372,00041.8°Bipolar44"2.3"2.3"621D-Profile11× 10^-70120ISO Class 1
    		4799N1600000000
     

    Stepper Servomotors with Integrated Drive

    Image of Product. Front orientation. Servomotors. Stepper Servomotors with Integrated Drive.
    Simplify your servomotor setup—these servomotors have a built-in drive, removing the need for cable between the motor and drive. They create high torque at low speeds like traditional stepper motors but with greater torque performance and positioning reliability.
    These servomotors accept step and direction, position, speed, torque, or sequencing commands. Use a computer to set up and calibrate the motor to your system. After initial setup, use a separate controller, such as a programmable logic controller (PLC), microcontroller, or indexer. You can also store target positions with speeds and accelerations in the drive and then trigger each sequence with minimal input from a controller. The encoder relays distance, direction, and speed back to the servomotor. Based on this feedback, the servomotor dynamically adapts its movements to increase system efficiency.
    Maximum Holding Torque—Holding torque is the force needed to move the shaft out of position when it is stationary. Torque generally decreases as speed increases. Use a torque-speed curve to confirm which motor will work for your application. Click on a part number and select "Product Detail" to view the curve for a motor.
    Overall
    Shaft
    No. of
    Inputs/Outputs
    Max. Holding
    Torque, in·ozf
    Max. Rotation
    Speed, rpm
    Voltage,
    V DC
    Current,
    amp
    Step
    Resolution
    Full Step
    Increment
    Lg.
    Wd.
    Ht.
    Dia.,
    mm
    Lg.,
    mm
    Ctr.-to-Base
    Lg.
    Communication
    Protocol
    Digital
    Inputs
    Analog
    Inputs
    Digital
    Outputs
    Enclosure
    Rating
    Each
    NEMA 17 Frame Size
    403,00012 to 481.31 to 1/2561.8°3.5"1.7"3"6180.83"Modbus RTU814IP20
    		5361N140000000
    593,00012 to 481.41 to 1/2561.8°3.7"1.7"3"6180.83"Modbus RTU814IP20
    		5361N15000000
    733,00012 to 481.31 to 1/2561.8°4.1"1.7"3"6180.83"Modbus RTU814IP20
    		5361N16000000
     

    Clamping Precision Flexible Shaft Couplings

    Image of Product. Front orientation. Flexible Shaft Couplings. Clamping Precision Flexible Shaft Couplings, Spiral Cut.

    Spiral Cut

    Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft. Tighten the clamping screws to secure.
    Spiral Cut—Spiral couplings have long cuts in their body for flexibility to handle parallel, axial, and angular misalignment better than parallel couplings. However, they’re not as rigid. Often used for light duty encoder and stepper drive applications, they allow zero backlash (no play) and never need lubrication. They’re also known as helical beam couplings.
    7075 Aluminum—7075 aluminum couplings are lightweight with good corrosion resistance.
    303 Stainless Steel—303 stainless steel couplings offer excellent corrosion resistance.
    Misalignment
    Capability
    For Shaft
    Diameter
    Overall
    Lg., mm
    OD,
    mm
    Max. Rotation
    Speed, rpm
    Max. Torque,
    in·lbf
    Parallel,
    mm
    Angular
    Axial,
    mm
    For Rotary Motion
    Each
    Spiral Cut
     
    7075 Aluminum
    6 mm × 3/16"28206,000100.23°0.12Forward/Reverse, Start/Stop2464K15000000
    6 mm × 1/4"28206,000100.23°0.12Forward/Reverse, Start/Stop2464K200000
    6 mm × 1/4"30256,000270.383°0.25Forward/Reverse, Start/Stop2464K300000
    6 mm × 3/8"30256,000270.383°0.25Forward/Reverse, Start/Stop2464K2300000
    6 mm × 4 mm28206,000100.23°0.12Forward/Reverse, Start/Stop2463K2300000
    6 mm × 5 mm28206,000100.23°0.12Forward/Reverse, Start/Stop2463K400000
    6 mm × 6 mm28206,000100.23°0.12Forward/Reverse, Start/Stop2463K500000
    6 mm × 6 mm30256,000270.383°0.25Forward/Reverse, Start/Stop2463K2400000
    7 mm × 6 mm30256,000270.383°0.25Forward/Reverse, Start/Stop2463K2500000
    8 mm × 6 mm30256,000270.383°0.25Forward/Reverse, Start/Stop2463K600000
    9 mm × 6 mm30256,000270.383°0.25Forward/Reverse, Start/Stop2463K2900000
    10 mm × 6 mm30256,000270.383°0.25Forward/Reverse, Start/Stop2463K3400000
     
    303 Stainless Steel
    4 mm × 6 mm28206,000150.23°0.12Forward/Reverse, Start/Stop2463K124000000
    5 mm × 6 mm28206,000150.23°0.12Forward/Reverse, Start/Stop2463K125000000
    6 mm × 6 mm28206,000150.23°0.12Forward/Reverse, Start/Stop2463K126000000
    6 mm × 6 mm30256,000400.383°0.25Forward/Reverse, Start/Stop2463K301000000
    6 mm × 8 mm30256,000400.383°0.25Forward/Reverse, Start/Stop2463K304000000
    6 mm × 9 mm30256,000400.383°0.25Forward/Reverse, Start/Stop2463K307000000
    6 mm × 10 mm30256,000400.383°0.25Forward/Reverse, Start/Stop2463K312000000
     

    Set Screw Precision Flexible Shaft Couplings

    Image of Product. Front orientation. Flexible Shaft Couplings. Set Screw Precision Flexible Shaft Couplings.
    Tighten the set screws to fasten these couplings to your shaft. Set screws bite into the shaft to hold the couplings in place. All are lightweight, corrosion-resistant aluminum.
    Spiral Cut—Spiral couplings have long, continuous cuts in the body, making them flexible enough to handle parallel, axial, and angular misalignment. Often used for light duty encoder and stepper drive applications, they allow zero backlash (no play) and never need lubrication. They’re also known as helical beam couplings. Spiral couplings are less rigid than parallel couplings.
    Misalignment
    Capability
    For Shaft
    Diameter
    Overall
    Lg., mm
    OD,
    mm
    Max. Rotation
    Speed
    Max. Torque,
    in·lbf
    Angular
    Axial,
    mm
    For Rotary Motion
    Each
    Spiral Cut
     
    7075 Aluminum
    6 mm × 3 mm19.119.1Not Rated203°0.15Forward/Reverse, Start/Stop4147N141000000
    6 mm × 3 mm22.415.9Not Rated123°0.2Forward/Reverse, Start/Stop4147N13300000
    6 mm × 4 mm19.119.1Not Rated203°0.15Forward/Reverse, Start/Stop4147N14200000
    6 mm × 4 mm25.419.1Not Rated253°0.2Forward/Reverse, Start/Stop4147N15500000
    6 mm × 5 mm19.119.1Not Rated203°0.15Forward/Reverse, Start/Stop4147N14300000
    6 mm × 5 mm22.415.9Not Rated123°0.2Forward/Reverse, Start/Stop4147N13500000
    6 mm × 5 mm25.419.1Not Rated253°0.2Forward/Reverse, Start/Stop4147N15600000
    6 mm × 6 mm19.119.1Not Rated203°0.15Forward/Reverse, Start/Stop4147N14400000
    6 mm × 6 mm22.415.9Not Rated123°0.2Forward/Reverse, Start/Stop4147N13600000
    6 mm × 6 mm25.419.1Not Rated253°0.2Forward/Reverse, Start/Stop4147N15700000
    6 mm × 6 mm25.425.4Not Rated423°0.15Forward/Reverse, Start/Stop4147N18100000
    6 mm × 6 mm31.831.8Not Rated843°0.15Forward/Reverse, Start/Stop4147N195000000
    6 mm × 6 mm38.125.4Not Rated633°0.2Forward/Reverse, Start/Stop4147N16600000
    8 mm × 6 mm19.119.1Not Rated203°0.15Forward/Reverse, Start/Stop4147N14700000
    8 mm × 6 mm25.419.1Not Rated253°0.2Forward/Reverse, Start/Stop4147N16100000
    8 mm × 6 mm38.125.4Not Rated633°0.2Forward/Reverse, Start/Stop4147N16900000
    10 mm × 6 mm25.425.4Not Rated423°0.15Forward/Reverse, Start/Stop4147N18800000
    10 mm × 6 mm38.125.4Not Rated633°0.2Forward/Reverse, Start/Stop4147N17400000
    11 mm × 6 mm31.831.8Not Rated843°0.15Forward/Reverse, Start/Stop4147N217000000
    13 mm × 6 mm31.831.8Not Rated843°0.15Forward/Reverse, Start/Stop4147N223000000
     
    back to top