CNC Spindle Motor 7.5 kW, 18000 RPM, 380 V Air Cooled Square (Independent Fan)

The 7.5 kW Square Air-Cooled Spindle Motor is a powerhouse designed for the most demanding CNC applications. Operating at 18,000 RPM with a 380V 3-phase input, this motor is specifically engineered for high-precision pattern making, foam cutting, and heavy-duty wood carving. Its square body design allows for rigid mounting, while the integrated independent fan provides consistent cooling regardless of the spindle speed—a critical feature for low-speed high-torque operations. Equipped with a high-precision P4 bearing set (7008 & 7004), this motor delivers exceptional rotational accuracy and a 3.58 Nm torque rating, ensuring smooth finishes in diverse materials.

Powerful 7.5 kW 380V Motor
High-speed 18000 RPM performance
Independent Electric Cooling Fan
ER32 Collet interface for large diameter tools
High-precision 2-pole construction
Square housing for easy and stable mounting

⚡ Quick Technical Datasheet:

Power OutputN/A

Max SpeedN/A

Voltage RatingN/A

Collet InterfaceER Standard

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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: 17.2 kg \| coolingType: Air Cooled (Independent Fan) \| bodyShape: Square
FREQUENCY	300 Hz
POLE COUNT	2 Pole
BEARING CONFIGURATION	2 x 7008 P4 (Front), 2 x 7004 P4 (Rear)
MODEL NUMBER	A75180S380M132
POWER RATING	7.5 kW
OPERATING VOLTAGE	380 V AC (3 Phase)
RATED CURRENT	15.0 A
RATED TORQUE	3.58 Nm
COLLET INTERFACE	ER32 (2mm - 20mm)

Industrial Applications

Usage Scenario	Target Industry
Industrial CNC Router Manufacturing	Furniture and Woodworking
CNC Pattern Making Machines	Automotive Pattern Design
Foam Cutting and Profiling	Advertising and Signage
Heavy-Duty Wood Carving and Relief Work	Packaging and Foam Fabrication
Large-Scale Furniture Production	Aerospace Model Making
Plastic and Composite Milling	General Engineering

Technical FAQ & Operational Guide

Why is an 'Independent Fan' better than a shaft-driven fan?

A shaft-driven fan's cooling capacity drops as RPM decreases. An independent fan runs at a constant speed, ensuring the motor stays cool even when running at lower RPMs for heavy torque tasks.

What is the maximum tool shank diameter this spindle can hold?

Using the ER32 collet system, this spindle can accommodate tool shanks ranging from 2mm up to 20mm.

Can this motor run on a 220V single-phase supply?

No, this motor is specifically rated for 380V 3-phase supply. Attempting to run it on 220V will result in power loss and potential damage to the windings.

How is the rotational balancing calibrated on this spindle motor?

Every spindle motor is dynamically balanced in accordance with the ISO 1940 balancing standard to guarantee vibration-free running and maximum stability at high RPMs.

What are the runout tolerances of the shaft and collet interface?

The internal shaft taper maintains a runout accuracy tolerance of under 0.003mm (3 microns), maintaining precise tool concentricity and preventing premature cutter wear.

What cooling precautions are built-in to prevent heat exhaustion?

Built-in temperature dissipation channels support continuous water/liquid cooling circulation or forced fan airflow, preventing thermal expansion of components.

Is this spindle motor compatible with standard VFD inverters and collets?

Yes, the spindle supports direct electrical integration with standard variable frequency drives (VFD) and accepts industrial ER collets (ER11, ER20, ER25, or ER32) to match standard toolholder dimensions.

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CNC Spindle Motor 7.5 kW, 18000 RPM, 380 V Air Cooled Square (Independent Fan)

Powerful 7.5 kW 380V Motor

High-speed 18000 RPM performance

Independent Electric Cooling Fan

ER32 Collet interface for large diameter tools

High-precision 2-pole construction

Square housing for easy and stable mounting

⚡ Quick Technical Datasheet:

Power OutputN/A

Max SpeedN/A

Voltage RatingN/A

Collet InterfaceER Standard

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 Parameter

Engineering Specification Value

MAX SPEED

18000 RPM

MECHANICAL

weight: 17.2 kg | coolingType: Air Cooled (Independent Fan) | bodyShape: Square

FREQUENCY

300 Hz

POLE COUNT

2 Pole

BEARING CONFIGURATION

2 x 7008 P4 (Front), 2 x 7004 P4 (Rear)

MODEL NUMBER

A75180S380M132

POWER RATING

7.5 kW

OPERATING VOLTAGE

380 V AC (3 Phase)

RATED CURRENT

15.0 A

RATED TORQUE

3.58 Nm

COLLET INTERFACE

ER32 (2mm - 20mm)

Usage Scenario

Target Industry

Industrial CNC Router Manufacturing

Furniture and Woodworking

CNC Pattern Making Machines

Automotive Pattern Design

Foam Cutting and Profiling

Advertising and Signage

Heavy-Duty Wood Carving and Relief Work

Packaging and Foam Fabrication

Large-Scale Furniture Production

Aerospace Model Making

Plastic and Composite Milling

General Engineering