4.5 kW Air Cooled CNC Spindle Motor, 18000 rpm, ER32

4.5 kW CNC spindle motor for sale at good price, 18000 rpm speed, 2.27 Nm torque, 300Hz frequency, 3 phase 380V AC operating voltage, ER32 (φ3.175 mm - φ20 mm) collet.

Feature

• Spindle motor with air cooling fan and ER32 collet ensures smooth running.
• Fast response, strong overload capacity, low noise and high mechanical precision.
• High-quality 4 pcs bearings (7008Cx2 + 7002Cx2), runout off less than 0.01mm, tapered bore less than 0.005mm.
• P4 grade ceramic ball bearings are used as spindle bearings, 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.

Application

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

Note: Ensure that the spindle motor and VFD are compatible. The VFD’s specifications and parameter settings must align with the spindle motor’s nominal parameters. Incorrect settings can lead to spindle motor damage or burnout.

Specification

Model	STF60-103-4.5
Matched VFD Model	GK3000-4T0075G (10 hp three phase VFD) GK3000-CS0075G (10 hp 1-phase 220V to 3-phase 380V VFD)
Power	4.5 kW
Phase	Three phase
Speed	18000 rpm
Voltage	3-phase 380V±10% AC Note: (The default voltage of the matching VFD is consistent with the motor voltage)
Current	9.2A
Frequency	300Hz
Torque	2.27 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	ER32 (φ3.175 mm - φ20 mm)
Bearings Type	7008C P4*2 & 7002C P4*2
Application	Woodworking & Plastic
Weight	12 kg
Download Attachments	4.5kW Air Cooled Spindle Motor CAD Drawings

Details

Tips: Speed Range of Spindle Motor in CNC Machine When Processing

Under normal processing conditions, the main parameter affecting the tool life of a woodworking engraving machine is spindle motor speed. Under the same conditions, the lower the spindle motor speed, the longer the tool life. In order to prolong the service life of the tool, it is desirable to set a lower spindle speed, but the speed of the spindle motor can not be reduced indefinitely. When the speed of the spindle motor is too low, the cutting force becomes larger at the same feed speed, which makes the tool unbearable. So there is a reasonable rotational speed range for the spindle when processing certain materials.