CNC Spindle Motor 7.5 kW, 24000 RPM, 380V ER40 Water Cooled
The 7.5 kW Water-Cooled Spindle Motor is a flagship industrial solution engineered for the most intensive CNC machining applications, specifically stone carving and heavy metal engraving. This motor delivers a massive 5.76 N.m of torque, powered by a robust 4-pole design that ensures exceptional stability and material removal rates. Operating at speeds up to 24,000 RPM with a high-frequency 800 Hz input, it provides the perfect balance between rotational speed and sheer industrial power. The advanced water-cooling system allows for continuous operation during long duty cycles, preventing overheating in the most demanding environments. Equipped with a large-format ER40 collet system supporting tools up to 30mm and a premium P4 bearing configuration (2x 7008 & 2x 7005), this 24 kg spindle is built for rigid, high-precision industrial performance.
- High-Capacity 7.5 kW Industrial Power
- Steady 24000 RPM for stone and metalwork
- Superior 4-Pole High-Torque Architecture (5.76 N.m)
- High-Frequency 800 Hz Stable Operation
- Continuous Duty Water Cooling System
- Large ER40 Collet interface (3mm 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 |
|---|---|
| MODEL NUMBER | W75240R380M140 |
| POWER RATING | 7.5 kW |
| MAX SPEED | 24000 RPM |
| OPERATING VOLTAGE | 380 V AC |
| RATED CURRENT | 15.0 A |
| FREQUENCY | 800 Hz |
| RATED TORQUE | 5.76 N.m |
| POLE COUNT | 4 Pole |
| COLLET INTERFACE | ER40 (3mm - 30mm) |
| BEARING CONFIGURATION | 2 x 7008 P4 (Front), 2 x 7005 P4 (Rear) |
| MECHANICAL | weight: 24 Kg | coolingType: Water Cooled | bodyType: Heavy-Duty Industrial |
Industrial Applications
| Usage Scenario | Target Industry |
|---|---|
| Industrial Stone Carving and Granite Milling | Stone Fabrication and Masonry |
| Heavy-Duty Metal Engraving and Die Making | Die and Mold Manufacturing |
| Large-Format CNC Router Manufacturing | Industrial Machine Building |
| Hardwood Sculpting and Relief Carving | Aerospace and Tooling Engineering |
| Advanced Prototyping and Tooling | Large-Scale Furniture Production |
| 3D Architectural Model Machining | General Engineering |
Technical FAQ & Operational Guide
What tools can I use with the ER40 collet?
The ER40 collet system is designed for heavy-duty industrial work and can accommodate tool shanks ranging from 3mm up to 30mm, allowing for very large material removal bits.
Why is the 4-pole design important for stone carving?
A 4-pole design provides much higher torque (5.76 N.m) compared to standard 2-pole motors. This ensures the spindle can maintain its RPM while cutting through hard materials like stone and granite without stalling.
What type of VFD is required for this 7.5kW motor?
You will need a high-frequency Variable Frequency Drive (VFD) rated for at least 7.5kW (10HP) that supports an 800 Hz output frequency and 380V 3-phase input.
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