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    20 hp (15 kW) AC Servo Spindle Motor, 95 Nm, 1500 rpm

    5 out of 5 based on 2 reviews | Write a review
    AC servo spindle motor can be used with controller and brake resistor. High torque 95 Nm, working power 20 hp (15 kW), rated voltage 3-phase 380V, rated speed 1500 rpm (max 6000 rpm), built-in photoelectric encoder. Asynchronous servo motor for CNC machine spindle control and industrial automation speed control, heavy duty, reasonable price.
    SKU: ATO-SERVO-2095
    30-day Returns
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    Delivery date: 6-12 days

    Three phase AC servo spindle motor from reliable manufacturer. Rated power 20 hp (15 kW), voltage 380V, high speed 6000 rpm (maximum), high torque 95 Nm, equipped with high-speed photoelectric encoder. The asynchronous servo spindle motor has matched driver and brake resistor for selection, which is the best motor for CNC machine, milling tool, woodworking router and industrial automation machine, etc.

    Basic Specifications

    • Model: ATO-250ZJY-4-15-15
    • Rated Power: 20 hp (15 kW)
    • Rated Torque: 95 Nm
    • Rated Voltage: AC 3-Phase 380V±15%
    • Rated Current: 30A
    • Rated Speed: 1500 rpm
    • Max Speed: 6000 rpm
    • Rated Frequency: 50Hz
    • Weight: 131 kg

    Technical Parameters

    • Number of Poles: 4
    • Rotor Inertia: 0.018 G.D2
    • Incremental Encoder Line: 2500PPR
    • Installation Method: Flange installation
    • Fan Power: 75W
    • Fan Voltage: AC 380V
    • Insulation Class: F
    • Safety Class: IP54
    • Insulation and Voltage Resistance: AC 1500V, 1 minute
    • Insulation Resistance: DC 500V, 10M above
    • Work System: Continuous


    1. The AC servo spindle motor is a 3-phase AC induction servo motor, compact structure, small size, high torque.
    2. AC servo spindle motor adopts best electromagnetic design, high-speed photoelectric encoder, high precision bearings and F level insulation.
    3. AC servo spindle motor is in easy use, stable operation, high control precision, low electromagnetic noise, high efficiency, long service life and high performance price ratio.
    4. AC servo spindle motor is widely used in digital control machine, laser machine, milling machine, embroidery machine, textile machinery, printing machinery, packaging machinery, engraving machine, winding machine, three-coordinates measuring machine, industrial robot, medical equipment, woodworking router and other CNC machine.

    Installation Dimension (Unit: mm)

    Vertical Installation:

    20 hp (15 kW) AC Servo Spindle Motor Installation Dimension, Vertical

    Horizontal Installation:

    20 hp (15 kW) AC Servo Spindle Motor Installation Dimension, Horizontal


    15KW AC Servo Motor Details

    Tips: Why is the bearing of 20 hp servo spindle motor overheating?

    • 20 hp servo spindle motor's own reasons:
    1. The inner and outer rings of the bearing are too tightly matched.
    2. There is a problem with the shape and position tolerance of the parts, such as the poor coaxiality of the machine base, end cover, shaft and other parts.
    3. Improper selection of bearings.
    4. The bearing is poorly lubricated or the bearing is not cleaned, and there is debris in the grease.
    5. Shaft current.
    • Improper use of 20 hp servo spindle motor:
    1. Improper installation of the unit. For example, the coaxiality of the AC servo spindle motor shaft and the dragged device shaft does not meet the requirements.
    2. Pulling the pulley is too tight.
    3. Improper maintenance of the bearing, insufficient lubricating grease or exceeding the service life, drying and deterioration.
    Existing reviews of 20 hp (15 kW) AC Servo Spindle Motor, 95 Nm, 1500 rpm
    Can I use your 20 hp servo spindle motor?
    I'm in the process of retrofitting a cnc machine. Would this 20hp servo spindle motor be a recommended motor to use with a Delta c2000 encoder input card for orientation option?
    From: Kieran | Date: 12/12/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    No, you cannot use Delta c2000 encoder driver to control our servo motor. Since our servo motor can only work with our servo driver. And the Delta c2000 drive is a frequency converter.
    Great value and high quality!
    Does zero drift has to be restrained?
    From: Nesta | Date: 22/07/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    In the process of closed-loop control, the presence of zero drift can have an effect on the control result, so it is preferable to suppress it. Use the parameters for suppressing zero drift on the controller or servo, and adjust them carefully so that the motor speed converges to zero. Since zero drift itself has a certain randomness, it is not necessary to require the motor speed to be absolutely zero.
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