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    800W Air Cooled CNC Spindle Motor, 24000 rpm, ER11

    5 out of 5 based on 2 reviews | Write a review
    24000 rpm high speed spindle motor with ER11 collet, 800W power and 0.31 Nm torque, works at 3 phase 220V AC 400Hz power system. Air-cooled spindle motor is designed for wood carving CNC machine.
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    Delivery date: 6-12 days

    800W CNC spindle motor for sale at cheap price, 24000 rpm speed, 0.31 Nm torque, 400Hz frequency, 3 phase 220V AC operating voltage, ER11 (φ3.175 mm - φ7 mm) collet.


    • Spindle motor with air cooling fan and ER11 collet ensures smooth running.
    • Fast response, strong overload capacity, low noise and high mechanical precision.
    • High quality 3 pcs bearings (7002Cx2 + 7002Cx1), runout off less than 0.01mm, tapered bore less than 0.005mm.
    • P4 grade ceramic ball bearings used as spindle bearing, which improves the service life under high speed revolution.
    • Lubricated with grease, which is resistant to 200 degrees high temperature.
    • Tight sealing and two-layer dustproof design.


    This series air-cooled electric spindle motors mainly match with variable frequency drives or engraving machines, CNC router machine, and used for high speed profiling, drilling, cutting, engraving and groove milling of wood, metal, plastics, foam, rubber and other materials.

    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.


    Model STF65-0.8-ER11
    Matched VFD Model GK3000-2S0015 (2 hp single to three phase VFD)
    GK3000-4T0015G (2 hp three phase VFD)
    Power 800W
    Phase Three phase
    Speed 24000 rpm
    Voltage 3-phase 220V±10% AC
    Current 2.5A
    Frequency 400Hz
    Torque 0.31 Nm
    Number of Pole 2 poles
    Cooling Type Air-cooled
    Installation Method Horizontally or Vertically (When the motor is installed, the radial runout standard is required to be within 5um, and the chuck is generally 10um-15um.)
    Lubrication Grease
    Thermal Class Class F
    Protection Class IP50
    Certification CE
    Warranty Bearings for half a year, other parts for one year
    Joint of Nose ER11 (φ3.175 mm - φ7 mm)
    Bearings Type 7002C P4*2 & 7002C P4*1
    Application Woodworking & Plastic
    Weight 3 kg
    PDFDownload Attachments 800W Air Cooled Spindle Motor CAD Drawings



    800W Air Cooled CNC Spindle Motor Details

    Tips: What is a Spindle Motor?

    Spindle motor is also called high speed motor, refers to the revolution of more than 10000 RPM AC motor. It has the advantages of fast speed, small size, light weight, low material consumption, low noise, low vibration, mainly used in wood, aluminum, stone, hardware, glass, PVC and other industries. Due to its wide application and meticulous work, fast speed and excellent processing quality, making other ordinary motor can not meet the technical requirements of spindle motor. Spindle motor plays an important role in the industrial production process, so it is particularly popular all over the world.

    Safety Tips for Using ATO CNC Spindle Motors

    1. The electric 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, and it will burn the spindle motor if the settings are not correct.

    2. Before using water-cooled spindle motor, it shall ensure that cooling cycle system works normally and the running under no cooling conditions is prohibited. The volume of cooling water is calculated as per 1 liter/minute, the minimum flow of cooling water is not less than 5 liter/minute, cooling water pipe and the nozzle shall be connected reliably and there is no leakage.

    3. The cooling liquid shall be clean and free of grease and the temperature shall be within 5-30℃. The cooling medium shall carry out force cooling when the ambient temperature is higher than 30℃. The precision lathe requires the cooling liquid with a constant temperature of 20 +/-2℃.

    4. During storage and transport of the spindle motor, the status of high-speed grease inside the bearing will change. The user shall run it at a low speed first by starting from the lowest speed of the spindle motor for 30 minutes and then 20 minutes for every 3000 rounds. Otherwise there will have abnormal sound, noise, heat and other phenomena, which will affect the bearing life if the spindle motor is started directly at a high speed. During long term storage, the spindle motor shall run (at low speed) for 15-30 minutes once a week at last.

    5. Collet, nut and inner taper hole shall be washed clean when installing blades on the spindle motor in order to avoid any impact on the precision. The blade handle shall be inserted into the collet more than 15mm.

    6. For daily machining, the spindle motor shall be warmed up, run for 15-20 minutes when the machining speed is reached and then performs precise machining. It is better to stop the spindle motor for two hours every day in order to recover its mechanical fatigue and prolong its life time.

    7. No knocking the end cover of the spindle motor. No hammering the collet and blade head when removing blades. No shocking or colliding during transport, storage and using, especially the end of the spindle motor.

    8. The spindle motor shall run in designated direction.

    9. The spindle motor shall be installed and fixed according to the relevant drawings and instructions.

    10. The temperature shall be within 22-25℃ if water cooling machine is used.

    11. The spindle motor adopts vapor lock and the gas source shall not be used until it has passed oil-water separator and dry filter. The air pressure is 0.2-0.25Mpa and the filtering precision is 5μm, otherwise there will cause damages to the bearing.

    Existing reviews of 800W Air Cooled CNC Spindle Motor, 24000 rpm, ER11
    We need suitable air cooled spindle motor as follow
    We, Balev Corporation EOOD Varna, Bulgaria need 2 pcs Air Cooled Spindle motors as follows:
    Type: ARFM.2Y-M2
    Technical specification: KW:0,9 – 1,2
    RPM:                                        12.000
    Hz:                                            200
    Volt:                                          220V
    Amper:                                     3
    If you need any additional information, please contact us.
    Please offer us on EXW basis.
    From: skyla | Date: 07/06/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    We recommend similar models: 800W Air Cooled CNC Spindle Motor, 24000RPM, the motor speed can be adjusted to 12000rpm by VFD. We also want to know what material is the spindle motor processing and what is the largest and most commonly used tool diameter in mm.
    Do power connectors and brackets come with the spindle?
    For your ATO-SPINDLE-800A spindle. Do power connectors and brackets come with the spindle?
    From: Cian Martin | Date: 05/09/2019
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, the power connector and bracket can be included on the ATO-SPINDLE-800A spindle motor.
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