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    1.5kW Air Cooled Spindle Motor for CNC Engraving Machine

    1.5kW air-cooled spindle motor with 3 phase, high speed of 18000rpm, 300Hz frequency, 0.91Nm holding torque, offers high accuracy, stable performance and long service life advantages. It is made of high-qualified material and designed for CNC engraving machine.
    Free Shipping Worldwide
    Delivery date: 10-20 days


    • Cooling: Air cooling, Power: 1.5kW, Torque: 0.91Nm, Collet: ER20
    • Voltage: 380V/220V AC at 300Hz, cooled spindle motor speed: 1-18000 R/min
    • Fast response, strong overload capacity, low noise and high mechanical precision.
    • High quality 4pcs bearings (7005Cx2 + 7002Cx2), 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.
    • Tight sealing and two-layer dustproof design.


    This series air-cooled electric spindle motors are applicable to CNC engraving machines and used for high speed profiling, drilling, cutting, engraving and groove milling of wood, plastics, aluminum, rubber and other materials.

    1.5kW Air Cooled Spindle Motor Specification

    Model STF47-82-1.5
    Power 1.5kW
    Phase 3 Phase
    Speed 18000rpm
    Voltage 380V±10% / 220V±10% AC
    Current 3.2A / 5.8A
    Frequency 300Hz
    Torque 0.91Nm
    Cooling Type Air-cooled
    Lubrication Grease
    Thermal Class Class F
    Protection Class IP50
    Certification CCC, CE, RoHS, UL, VDE
    Warranty Bearings for half a year, other parts for one year
    Joint of Nose ER20 (φ3.175-φ13)
    Bearings Type 7005C P4*2 & 7002C P4*2
    Application Woodworking & Plastic
    Weight 7kg

    1.5kW Air Cooled Spindle Motor Dimension (Unit=mm)

    1.5kw air cooled spindle motor dimension


    6 Tips of Spindle Motor Maintenance

    1. Iron hook shall be commonly used to clean the leaking mouth at the lower end of the water drain cover at the front end of the spindle in use, so as to prevent debris from blocking the leaking pipe.

    2. The air into the motorized spindle should be dry and clean.

    3. Remove the motorized spindle from the machine tool and use the air pipe to blow out the residual water in the motorized spindle cooling cavity.

    4. Long-term use of the motorized spindle should be oil seal, start, in addition to the use of gasoline to wash the surface of anti-rust oil, should do the following work:

    A. Pass oil mist for 3-5 minutes. Turn the rotating shaft with your hands and feel no retardation.
    B. Use megohm meter to detect the insulation to the ground, usually ≥10 megohm.
    C. First run at 1/3 rated speed for 1 hour when the power is switched on. When there is no abnormal phenomenon, run at 1/2 rated speed for 1 hour
    D. Precision steel ball is adopted to maintain the turning accuracy of the motorized spindle in high-speed grinding.

    5. The motorized spindle can be lubricated with high speed grease and oil mist according to different rotating speed.

    6. The temperature rise caused by the high-speed rotation of the motorized spindle can be eliminated by using the coolant circulating system flow.

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