CNC Spindle Motor 5.5 kW, 24000 RPM, 380V Water Cooled ER25

The 5.5 kW Water-Cooled CNC Spindle Motor is a robust industrial powerhouse engineered for high-precision, heavy-duty applications such as stone carving, marble engraving, and industrial metal fabrication. Delivering 5.5 kW of power on a stable 380V architecture, this motor provides a high torque output of 2.91 N.m at a peak speed of 24,000 RPM. It is optimized for continuous operations where material density requires sustained cutting force. The integrated water-cooling system ensures superior thermal management, protecting the high-precision P4 grade bearings (2x 7007 front and 2x 7005 rear arrangement) from heat-induced expansion and wear during long production cycles. Equipped with a high-capacity ER25 collet system supporting tool shanks up to 16mm, this 22 kg motor provides the mechanical rigidity and rotational accuracy necessary for professional CNC machining centers and high-throughput industrial carving machines.

Industrial 5.5 kW Power for heavy-duty material removal
High-Speed 24,000 RPM for clean, precise finishing
Precision P4 Grade Bearing Assembly (7007 & 7005)
Industrial 400 Hz High-Frequency stable operation
Advanced Water Cooling for maximum lifespan and continuous duty
Versatile ER25 Collet system for tool shanks up to 16mm

⚡ 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
MODEL NUMBER	W55240R380M1
POWER RATING	5.5 kW
MAX SPEED	24000 RPM
OPERATING VOLTAGE	380 V AC
RATED CURRENT	13.0 A
FREQUENCY	400 Hz
RATED TORQUE	2.91 N.m
POLE COUNT	2 Pole
COLLET INTERFACE	ER25 (1mm - 16mm)
BEARING CONFIGURATION	2 x 7007 P4 (Front), 2 x 7005 P4 (Rear)
MECHANICAL	weight: 22 Kg \| coolingType: Water Cooled \| bodyType: Industrial Heavy-Duty Series

Industrial Applications

Usage Scenario	Target Industry
Heavy-Duty Stone and Marble Carving	Stone Fabrication and Masonry Industries
Industrial Metal Engraving and Milling	Metalworking and Tooling Industries
Continuous Production CNC Routing	Industrial Signage and Display Production
Dense Composite and Aluminum Machining	Precision Engineering and Prototyping
Industrial Sculpture and 3D Art Fabrication	Machine Tool Manufacturing
Large-Scale CNC Machine Tooling	General Engineering

Technical FAQ & Operational Guide

Is this 5.5 kW motor suitable for marble and granite?

Yes, the 5.5 kW power rating and 2.91 N.m torque provide the high cutting force required for processing dense materials like marble and stone. The water-cooling system is essential for maintaining accuracy during the long cycles typical in stone carving.

What is the benefit of the ER25 collet over ER20?

The ER25 collet system is more robust and supports larger tool shanks—up to 16mm. This allows for the use of larger material removal bits and provides higher clamping force, which is critical for the 5.5 kW power rating and the high-torque tasks this motor performs.

Does this motor require a specific VFD?

Yes, this motor must be paired with a Variable Frequency Drive (VFD) rated for at least 5.5 kW and 380V output. It should be configured to run at 400 Hz to achieve the full 24,000 RPM speed safely.

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 5.5 kW, 24000 RPM, 380V Water Cooled ER25

Industrial 5.5 kW Power for heavy-duty material removal

High-Speed 24,000 RPM for clean, precise finishing

Precision P4 Grade Bearing Assembly (7007 & 7005)

Industrial 400 Hz High-Frequency stable operation

Advanced Water Cooling for maximum lifespan and continuous duty

Versatile ER25 Collet system for tool shanks up to 16mm

⚡ 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

MODEL NUMBER

W55240R380M1

POWER RATING

5.5 kW

MAX SPEED

24000 RPM

OPERATING VOLTAGE

380 V AC

RATED CURRENT

13.0 A

FREQUENCY

400 Hz

RATED TORQUE

2.91 N.m

POLE COUNT

2 Pole

COLLET INTERFACE

ER25 (1mm - 16mm)

BEARING CONFIGURATION

2 x 7007 P4 (Front), 2 x 7005 P4 (Rear)

MECHANICAL

weight: 22 Kg | coolingType: Water Cooled | bodyType: Industrial Heavy-Duty Series

Usage Scenario

Target Industry

Heavy-Duty Stone and Marble Carving

Stone Fabrication and Masonry Industries

Industrial Metal Engraving and Milling

Metalworking and Tooling Industries

Continuous Production CNC Routing

Industrial Signage and Display Production

Dense Composite and Aluminum Machining

Precision Engineering and Prototyping

Industrial Sculpture and 3D Art Fabrication

Machine Tool Manufacturing

Large-Scale CNC Machine Tooling

General Engineering