CNC Spindle Motor 3.5 kW, 18000 RPM, 220V/380V Air-Cooled Square
The 3.5 kW Air-Cooled Square Spindle Motor is an industrial-grade powerhouse engineered for demanding CNC woodworking and heavy-duty routing applications. Delivering a max speed of 18,000 RPM at 300 Hz, this motor is specifically optimized for high-torque tasks such as deep wood carving, relief work, and furniture manufacturing. Its square body architecture provides superior mounting rigidity compared to cylindrical models, minimizing vibration during intensive material removal. The motor supports dual-voltage operation (220V/380V), allowing it to integrate seamlessly into diverse industrial power environments. Equipped with an advanced P4 precision bearing configuration (2x 7005 & 2x 7002), the spindle ensures a stable 1.68 Nm torque delivery and long-term rotational accuracy. The integrated air-cooling system provides efficient thermal management without the need for external chillers, making it a reliable and low-maintenance choice for professional CNC workshops.
- High-Torque 3.5 kW Industrial Performance
- Stable 18000 RPM Output for Woodworking
- Dual Voltage Compatibility (220V / 380V)
- Rigid Square Body for enhanced mounting stability
- Precision P4 Grade Bearing Assembly (7005 & 7002)
- ER20 Collet system for tools up to 13mm
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: 7.5 kg | coolingType: Air Cooled (Integrated Fan) | bodyType: Square Profile |
| FREQUENCY | 300 Hz |
| POLE COUNT | 2 Pole |
| BEARING CONFIGURATION | 2 x 7005 P4 (Front), 2 x 7002 P4 (Rear) |
| MODEL NUMBER | A35180S2238M120 |
| POWER RATING | 3.5 kW |
| OPERATING VOLTAGE | 220 V / 380 V AC |
| RATED CURRENT | 12 A (at 220V) / 7.2 A (at 380V) |
| RATED TORQUE | 1.68 Nm |
| COLLET INTERFACE | ER20 (1mm - 13mm) |
Industrial Applications
| Usage Scenario | Target Industry |
|---|---|
| Heavy-Duty CNC Wood Carving and Relief | Furniture and Joinery Industries |
| Industrial Furniture and Cabinetry Production | Commercial Signage and Displays |
| High-Speed MDF and Plywood Machining | Industrial Woodworking and Craftsmanship |
| 3D Pattern Making and Prototyping | Automotive Pattern Making |
| Signage and Architectural Millwork | Architectural Design and Decoration |
| Large-Scale Panel Processing | General Engineering |
Technical FAQ & Operational Guide
What is the benefit of the square body design?
The square body profile offers a larger surface area for mounting and heat dissipation. It provides much higher mechanical rigidity compared to cylindrical spindles, which is essential for heavy-duty carving and preventing vibration at 18,000 RPM.
Does this spindle require a water chiller?
No, this is an air-cooled model featuring an integrated high-efficiency fan. This simplifies the setup as it removes the need for water pipes, pumps, and cooling reservoirs.
What tools can I use with the ER20 collet on this 3.5kW motor?
The ER20 collet system is standard and supports a wide variety of tools with shank diameters ranging from 1mm up to 13mm.
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