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    350 W CNC ATC Spindle, 40000 rpm

    5 out of 5 based on 4 reviews | Write a review
    40000 rpm 350 watt ATC air cooled spindle for sale, 3 phase 220V AC at 1000Hz frequency, torque 0.12 Nm. Auto tool change spindle motor with Φ4 collet, low noise and high precision, improves the efficiency of automated processing, designed for CNC Router machines.
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    Delivery date: 6-12 days

    High quality three phase 0.35 kW ATC spindle motor with 40000 rpm, air-cooled of cooling method, works at 66.7V AC 1000Hz, torque 0.12 Nm, suitable for CNC drilling and milling equipment.


    • Reasonable structure design, simple and compact configuration, easy to take apart.
    • High precision, inflexibility and efficiency, long operation life.
    • With high grade size, shape, position precision, and quality of the surface.
    • Enough abrasive resistance, vibration resistance, suitable size.
    • Work stable, low noise, enough fatigue strength.


    Model ATO-DC-38A
    Motor power 350 W
    Rated voltage 220V AC
    Phase Three phase
    Max speed 40000 rpm
    Max current 8 A
    Max frequency 1000 Hz
    Torque 0.12 N·M
    Cone at the end of the shaft pulsates ≤0.001 mm
    Tooling releasing air pressure 5.0-6.0 Kgf/cm²
    Tooling change method Automatic tool changer
    Tooling pulling force ≥1000 N
    Tooling back air pressure No
    Tooling connection Φ4 collet
    Cooling Air cooling
    Encoder No
    Coolant pressure 2.5~3.0 Kgf/cm²
    Approach switch No
    Bearing lubrication method Grease
    Balance level G1
    Install method Clamp
    Vibration Value ≤0.8 mm/s
    Weight 1.9 Kg

    Note: The spindle motor and VFD shall be suitable with each other. The specifications and parameter settings of the VFD shall match the nominal parameters of the spindle motor. Otherwise, it will burn the spindle motor if the settings are not correct.

    Dimension (Unit: mm)

    350W ATC Spindle Dimension


    350W CNC ATC Spindle Details

    Tips: Inspection Before Using an ATC Spindle

    When operating the automatic tool change electric spindle, all necessary inspections must be done. Only in this way can the physical objects in operation be reduced, the damage to the automatic tool change electric spindle can be reduced, and the safety of the operators can also be ensured.

    • Whether the fastening screws of the automatic tool change electric spindle are tightened, and check the bearing, wiring and housing together.
    • Check carefully the screws and pins of the coupling, the belt connection, the rotation of the unit, whether there is any jamming, movement and abnormal sound.
    • The three-phase power supply voltage is checked, whether the voltage is too high or low or the three-phase voltage is asymmetric.
    Existing reviews of 350 W CNC ATC Spindle, 40000 rpm
    Balance performance and energy efficiency
    The 350 W power rating strikes a good balance between performance and energy efficiency. It doesn't consume excessive power, which is important for keeping operational costs in check.
    From: Eleutheria | Date: 30/10/2023
    Was this review helpful? Yes No (0/0)
    Does the  spindle motor have encoder feedback that the VFD reads?
    I am wondering if we are able to control the speed of this 2.2 kW air-cooled CNC spindle motor using the suggested VFD. For example, does the motor have encoder feedback that the VFD reads?
    From: rayparker | Date: 12/12/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, you can use the suggested VFD to control the speed of this motor, because the VFD can adjust the output frequency and control the speed of the motor. This motor has no encoder feedback, and no encoder is required to adjust the speed of the motor through the VFD.
    Works great
    The 350watt ATC spindle motor arrived on time. No setup or functionality issues. Runs very smoothly and quietly for 6 hours at various speeds and under no-load conditions.
    From: Joel | Date: 22/04/2022
    Was this review helpful? Yes No (0/0)
    as good as described
    This spindle is as good as described. It has a well-made exterior and works quietly and reliably, no much noise comes from the CNC. I am very satisfied.
    From: Ryan | Date: 06/04/2022
    Was this review helpful? Yes No (0/0)
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