CNC ATC Spindle Motor 3.7 kW, 40000 RPM, 380V Water Cooled ISO20

The 3.7 kW Water-Cooled ATC Spindle Motor represents the pinnacle of high-velocity CNC engineering, designed specifically for automated micro-machining and high-precision milling. Delivering a robust 3.7 kW of power at a staggering 40,000 RPM, this motor is built on a 4-pole architecture capable of reaching an ultra-high frequency of 1333 Hz. The integrated ISO20 tool interface enables seamless Automatic Tool Change (ATC) operations, significantly boosting productivity in complex production cycles. Its advanced water-cooling system provides superior heat dissipation, essential for maintaining the thermal stability and longevity of the high-precision bearings during extreme rotational speeds. This spindle is the ideal choice for industrial fabricators requiring surgical precision, rapid tool transitions, and high-velocity material removal in 380V machining environments.

Ultra-High Speed 40,000 RPM for advanced micro-machining
Automatic Tool Change (ATC) for seamless, high-productivity operations
Industrial 3.7 kW Power for robust precision milling
Advanced 1333 Hz Frequency for stable high-velocity performance
Precision ISO20 Spindle interface for minimal runout
Continuous Duty Water Cooling for maximum thermal management

⚡ 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	W37400R380ATC-ISO20
POWER RATING	3.7 kW
MAX SPEED	40,000 RPM
OPERATING VOLTAGE	380 V AC
FREQUENCY	1333 Hz
POLE COUNT	4 Pole
TOOL INTERFACE	ISO20
MECHANICAL	coolingType: Water Cooled \| bodyType: Ultra High Speed ATC Series \| automationReady: ATC Drawbar Integrated

Industrial Applications

Usage Scenario	Target Industry
Automated Precision CNC Machining Centers	Precision Engineering and Micro-Tooling
Ultra-High Speed Micro-Milling and Drilling	Medical Device Manufacturing
Advanced Aerospace and Medical Component Machining	Aerospace and Defense Instrumentation
High-Velocity Composite and Aluminum Routing	Electronics and Semiconductor Fabrication
Intricate Die and Mold Finishing	Advanced Machine Tool Manufacturing
High-Accuracy R&D and Prototyping	General Engineering

Technical FAQ & Operational Guide

What kind of frequency drive (VFD) is required for 40,000 RPM?

This spindle operates at an ultra-high frequency of 1333 Hz. You must use a specialized high-frequency Variable Frequency Drive (VFD) that supports output frequencies above 1333 Hz. Standard industrial VFDs are typically capped at 400-600 Hz and will not work.

Why is ISO20 preferred for 40,000 RPM?

ISO20 is a precision-tapered interface designed for high-velocity stability. Its smaller, balanced mass compared to BT30 ensures minimal vibration and runout at 40,000 RPM, which is critical for maintaining surface finishes in micro-milling.

Does this ATC spindle require compressed air?

Yes, Automatic Tool Change (ATC) spindles require clean, dry compressed air to operate the internal pneumatic drawbar that releases and grabs the tool holders, and often for spindle taper air-blow to keep the interface clean.

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 ATC Spindle Motor 3.7 kW, 40000 RPM, 380V Water Cooled ISO20

Ultra-High Speed 40,000 RPM for advanced micro-machining

Automatic Tool Change (ATC) for seamless, high-productivity operations

Industrial 3.7 kW Power for robust precision milling

Advanced 1333 Hz Frequency for stable high-velocity performance

Precision ISO20 Spindle interface for minimal runout

Continuous Duty Water Cooling for maximum thermal management

⚡ 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

W37400R380ATC-ISO20

POWER RATING

3.7 kW

MAX SPEED

40,000 RPM

OPERATING VOLTAGE

380 V AC

FREQUENCY

1333 Hz

POLE COUNT

4 Pole

TOOL INTERFACE

ISO20

MECHANICAL

coolingType: Water Cooled | bodyType: Ultra High Speed ATC Series | automationReady: ATC Drawbar Integrated

Usage Scenario

Target Industry

Automated Precision CNC Machining Centers

Precision Engineering and Micro-Tooling

Ultra-High Speed Micro-Milling and Drilling

Medical Device Manufacturing

Advanced Aerospace and Medical Component Machining

Aerospace and Defense Instrumentation

High-Velocity Composite and Aluminum Routing

Electronics and Semiconductor Fabrication

Intricate Die and Mold Finishing

Advanced Machine Tool Manufacturing

High-Accuracy R&D and Prototyping

General Engineering