CNC Spindle Motor 3.5 kW, 18000 RPM, 220V/380V Dual Air-Cooled ER25
The 3.5 kW Air-Cooled Square Spindle Motor is a robust industrial solution designed for precision machining in wood routing, PCB manufacturing, and general CNC applications. Delivering a powerful 3.5 kW output at a peak speed of 18,000 RPM, this motor features a dual-voltage 220V/380V architecture for versatile integration. Built with a stable square body profile, it utilizes a high-precision 4-bearing set (2 x 7007 P4 and 2 x 7002 P4) to ensure minimal runout and exceptional rotational accuracy. The integrated dual air-cooling system provides efficient heat dissipation during continuous industrial duty cycles, eliminating the need for water cooling while maintaining a compact 350mm length. Equipped with a versatile ER25 collet system supporting tool shanks up to 16mm, this 8.5 kg motor offers the mechanical rigidity and 1.68 N.m torque delivery required for superior surface finishes in professional machining environments.
- Powerful 3.5 kW Industrial Grade Performance
- High-Speed 18,000 RPM for clean micro-machining and routing
- Dual Voltage Versatility (220V / 380V Support)
- Precision P4 Grade Bearing Assembly (7007 & 7002)
- Integrated Dual Air-Cooling for maintenance-free operation
- Robust ER25 Collet interface for tool shanks up to 16mm
- Compact 350mm Length for easy machine integration
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 | A35180S2238M125 |
| POWER RATING | 3.5 kW |
| MAX SPEED | 18000 RPM |
| OPERATING VOLTAGE | 220 V / 380 V (Dual) |
| RATED CURRENT | 12 A (220V) / 7.2 A (380V) |
| FREQUENCY | 300 Hz |
| RATED TORQUE | 1.68 N.m |
| POLE COUNT | 2 Pole |
| COLLET INTERFACE | ER25 (1mm - 16mm) |
| BEARING CONFIGURATION | 2 x 7007 P4 (Front), 2 x 7002 P4 (Rear) |
| MECHANICAL | weight: 8.5 Kg | length: 350 mm | coolingType: Dual Air Cooled | bodyType: Square Profile |
Industrial Applications
| Usage Scenario | Target Industry |
|---|---|
| Industrial CNC Wood Routing and Furniture Carving | Commercial Woodworking and Cabinetry |
| Precision PCB Manufacturing and Drilling | Electronics and Semiconductor Fabrication |
| Composite and Non-Ferrous Metal Machining | Advertising and Large-Format Signage |
| Signage, Acrylic, and Plastic Fabrication | Industrial Machine Tool OEM |
| MDF and Chipboard Processing | Pattern and Die Fabrication Centers |
| High-Speed Precision Pattern Making | General Engineering |
Technical FAQ & Operational Guide
What is the benefit of the square body design for this spindle?
The square body profile provides a flat, stable mounting surface and a larger heat dissipation area. This ensures a more rigid connection to the machine headstock, reducing vibration and chatter marks during aggressive cutting cycles in wood or aluminum.
Can I run this spindle on both 220V and 380V power?
Yes, this motor is designed with dual-voltage support. Depending on your Variable Frequency Drive (VFD) configuration, it can be wired for either 220V or 380V input, making it adaptable to different workshop electrical standards.
Does this model support ceramic bearings?
Yes, while the standard configuration uses high-precision steel P4 bearings, this model is available with an optional ceramic bearing setup for even higher thermal stability and extended operational life at peak speeds.
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