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    MOONS' hollow shaft HS and VHS stepping motors


    The hollow part of a hollow shaft motor (also known as a hollow shaft motor) can be fitted with optical components such as lenses and prisms so that it can be used as a high-precision rotating optical device. In addition, it can be used to connect gearboxes and other mechanisms. In addition to optimizing the mechanical design of the hollow shaft motor, the hollow shaft motor saves design space, reduces design time, and facilitates maintenance. Hollow shaft motors are widely used in semiconductor equipment, optical equipment, and motion platforms. Its advantages include its small size, lightweight, low noise, multi-purpose capability, and ease of use. With its unique magnetic circuit design, precise machining, and precise assembly technology, MOONS' has broken through the limitations of traditional hollow shaft stepper motors, enabling it to maintain high rotation speed torque and smooth operation despite having the characteristics of a large hollow shaft inner hole. Based on the technologies described above, MOONS' will develop five series of hollow shaft stepping motors.
    Motor size/mm ○36*36 □36*36 □42*42 ○57*57 □60*60
    Inner shaft bore/mm 7 12 16 22 27
    Motor thickness/mm 20
    Holding Torque/mNm 180 100 130 230 430

    2、Output shaft type

    Due to the hollow nature of the rotating shaft of hollow shaft motors, the shaft can be directly used in a variety of applications. As a result, hollow shaft motors have a different type of connection than traditional motors. It is important to note that the main mechanical interfaces of hollow shaft motors are the optical axis, the bayonet hollow, and the flange connection, which is divided into horizontal and vertical flanges. Hollow shaft motors are characterized by four types of shaft output:   1) Optical axis
      2) Bayonet hollow: Hollow bayonet direct connection.
      3) Vertical flange: Axial threaded hole.
      4) Horizontal flange: Radial threaded hole.
    • Optical axis
    • Bayonet hollow
    • 1) Optical axis
    • 2) Bayonet hollow
    • Vertical flange
    • Horizontal flange
    • 3) Vertical flange
    • 4) Horizontal flange

    3、Application examples

    In hollow shaft stepping motors, optical elements such as prisms, polarizers, or cameras can be mounted on the inner or outer shaft. Thus, complex installation and debugging work can be eliminated and a rotatable high-precision optical device can be manufactured directly.
    • Application examples
    • Application examples
    • Application examples
    Hollow shafts may also be associated with harmonic gearboxes, which can provide high torque as well as high precision. Application examples


    We can customize the following specifications, electrical parameters, output shaft type, etc. Table 1 Parameters of hollow shaft stepping motors
    Model Motor Dimension(mm) Motor Length(mm) Rated Current(A) Holding Torque(mNm) Inner Shaft Bore(mm) Rotor Inertia(gcm2) MotorMass(kg)
    HS14HRA2L4100 ○36*36 20.5 1.0 170 7 17.4 0.098
    VHS14HRA2L4100 185 0.099
    HS14HS7L4100 □36*36 75 12 12.3 0.086
    VHS14HS7L4100 105 0.088
    HS17HX7L4100 □42*42 —— 16 42 0.12
    VHS17HX7L4100 —— ——
    HS23HM6L4100 ○57*57 190 22 58 0.19
    VHS23HM6L4100 230 0.19
    HS24HS0L4150 □60*60 1.5 380 27 83.2 0.218
    VHS24HS0L4150 425 0.23
    HS/VHS14HRA Outline Drawing HS/VHS14HRA Outline Drawing HS/VHS14HS Outline Drawing HS/VHS14HS Outline Drawing HS/VHS17HX Outline Drawing HS/VHS17HX Outline Drawing HS/VHS23HM Outline Drawing HS/VHS23HM Outline Drawing HS/VHS24HS Outline Drawing HS/VHS24HS Outline Drawing