CNC Spindle Motor 3.5 kW, 18000 RPM, 220V/380V Air-Cooled Square ER25
The 3.5 kW Air-Cooled Square Spindle Motor is a high-performance industrial solution designed for demanding CNC applications where stability and power flexibility are paramount. This motor is uniquely engineered with a dual voltage architecture, allowing for operation on either 220V or 380V systems, making it highly versatile for different workshop environments. Its square body design offers superior mounting rigidity, significantly reducing vibration during heavy-duty wood carving and milling operations. Operating at a peak speed of 18,000 RPM with a 300 Hz frequency, it delivers a consistent 1.68 N.m torque. Equipped with a premium P4 bearing configuration (2x 7007 & 2x 7002) and an ER25 collet interface supporting tools up to 16mm, this 8.5 kg spindle provides the precision and durability required for professional machining centers.
- Versatile Dual Voltage support (220V/380V)
- High-Stability Square Body design for rigid mounting
- Precision P4 Grade Bearing Assembly (7007 & 7002)
- Stable 300 Hz High-Frequency operation
- Efficient Air Cooling for continuous industrial duty
- ER25 Collet system for tool shanks up to 16mm
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: 8.5 Kg | coolingType: Air Cooled | bodyType: Square Profile |
| FREQUENCY | 300 Hz |
| POLE COUNT | 2 Pole |
| BEARING CONFIGURATION | 2 x 7007 P4 (Front), 2 x 7002 P4 (Rear) |
| MODEL NUMBER | A35180S2238M125 |
| POWER RATING | 3.5 kW |
| OPERATING VOLTAGE | 220 V / 380 V (Dual) |
| RATED CURRENT | 12 A (220V) / 7.2 A (380V) |
| RATED TORQUE | 1.68 N.m |
| COLLET INTERFACE | ER25 (1mm - 16mm) |
Industrial Applications
| Usage Scenario | Target Industry |
|---|---|
| High-Performance CNC Wood Carving | Industrial Woodworking and Furniture |
| Industrial Furniture and Panel Processing | Signage and Advertising Industries |
| Medium-Duty Metal Engraving and Milling | Machine Tool Manufacturing |
| Acrylic and Composite Material Routing | Commercial Fabrication and Milling |
| Automated Signage Production | General Precision Engineering |
| VMC Machine Tooling Retrofitting | General Engineering |
Technical FAQ & Operational Guide
What is the advantage of a 'Dual Voltage' spindle?
A dual voltage spindle can be configured to run on either a standard 220V single-phase input (via VFD) or a 380V three-phase input. This allows the motor to be used in various industrial environments without needing to change the motor itself.
Why choose the square body for wood carving?
The square body provides a much larger and more stable mounting surface compared to round spindles. This reduces mechanical vibration, which is critical for achieving a high-quality finish on complex wood carving designs.
What type of VFD is required for this 3.5kW motor?
You need a High-Frequency VFD rated for at least 3.5kW (5HP) that supports a 300 Hz output. Ensure the VFD is matched to your available input voltage (220V or 380V).
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