CNC Spindle Motor 7.5 kW, 18000 RPM, 380V Air-Cooled Square ER40
The 7.5 kW Air-Cooled Square Spindle Motor is a high-stability industrial powerhouse designed for substantial CNC tasks that demand significant cutting force and thermal reliability. Featuring a robust square body design for enhanced mounting rigidity, this motor delivers a high torque of 6.65 Nm, making it the primary choice for CNC pattern making, industrial foam cutting, and heavy wood carving. Operating at 18,000 RPM with a frequency range of 300 Hz – 400 Hz, it ensures efficient material removal across dense substrates. The spindle is equipped with a premium P4 bearing configuration (2x 7010 & 2x 7005) to handle high radial and axial loads, while the ER40 collet system supports large-diameter tools up to 30mm. At 30 kg, this 380V motor provides the mass and precision required for high-stability machining centers where water-cooling is not feasible.
- Industrial 7.5 kW High-Torque Performance
- Stable Square Body design for rigid mounting
- Precision P4 Grade Bearing Assembly (7010 & 7005)
- 300 Hz – 400 Hz high-frequency stable operation
- Powerful Air Cooling for continuous industrial use
- Large ER40 Collet system for tools up to 30mm
Comparative Technical Spindle Motor Configurations Matrix
Use the structural data catalog matrix below to evaluate power outputs, maximum RPM, operating voltages, and cooling styles across standard TriQuench CNC spindle models.
| Spindle Capacity | Operating Speed | Operating Voltage | Cooling System |
|---|---|---|---|
| 12.0 kW | 18,000 RPM | 380 V | Water-Cooled |
| 0.8 kW | 24,000 RPM | 220 V | Air-Cooled (Long Shaft) |
| 3.7 kW | 40,000 RPM | 380 V | Water-Cooled ISO20 |
| 9.0 kW | 18,000 RPM | 380 V | Air-Cooled |
Technical Specifications
| Technical Parameter | Engineering Specification Value |
|---|---|
| MAX SPEED | 18000 RPM |
| MECHANICAL | weight: 30 Kg | coolingType: Air Cooled (Industrial Fan) | bodyType: Square Profile |
| FREQUENCY | 300 Hz - 400 Hz |
| POLE COUNT | 2 Pole |
| BEARING CONFIGURATION | 2 x 7010 P4 (Front), 2 x 7005 P4 (Rear) |
| POWER RATING | 7.5 kW |
| OPERATING VOLTAGE | 380 V AC |
| RATED CURRENT | 28.7 A |
| RATED TORQUE | 6.65 Nm |
| COLLET INTERFACE | ER40 (3mm - 30mm) |
Industrial Applications
| Usage Scenario | Target Industry |
|---|---|
| Industrial CNC Router Manufacturing | Industrial Machine Tool Manufacturing |
| CNC Pattern Making and Foundry Tooling | Aerospace and Automotive Tooling |
| Large-Scale Foam Cutting and Shaping | Foundry and Pattern Shops |
| Heavy Wood Carving and Panel Processing | Commercial Woodworking and Furniture |
| Acrylic and Composite Material Routing | Packaging and Display Manufacturing |
| VMC Tooling and Headstock Retrofitting | General Engineering |
Technical FAQ & Operational Guide
What is the advantage of a square body design for a 7.5kW spindle?
The square body provides a larger and flatter mounting surface compared to round spindles. This enhances the overall rigidity of the machine headstock, significantly reducing vibration during heavy-duty cutting operations and improving surface finish.
Does this spindle require a water chiller?
No, this is an air-cooled model. It utilizes a high-performance integrated fan to dissipate heat, making it easier to maintain and install in environments where liquid cooling systems are impractical.
Can I use large diameter tools with this spindle?
Yes, the ER40 collet interface is designed for heavy industrial use, supporting tool shanks from 3mm up to 30mm. This is ideal for large material removal bits used in pattern and foam cutting.
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