Square ER32 6KW 380V 4 Bearings Air Cooled Spindle Motor for CNC Router Engraving Machine

 VIDEO OF CNC SPINDLE MOTOR

 CATALOGUE OF ZHONG HUA JIANG (PDF Download)

  CNC Router Machine Catalogue 2025.pdf

 AIR COOLED SPINDLE MOTOR FOR SALE

The Zhong Hua Jiang Square ER32 6KW Air Cooled Spindle Motor is built for high-power CNC router, engraving, milling, and cutting applications that require stronger torque, stable speed control, and long-duty-cycle performance.

This 380V, 300Hz CNC spindle motor runs from 10,000 to 18,000 RPM and uses an ER32 collet system for larger tool compatibility. It is suitable for professional workshops, equipment builders, CNC router manufacturers, distributors, and B2B buyers who need a reliable square air cooled spindle motor for industrial production.

Compared with water-cooled spindle systems, the air-cooled design removes the need for pumps, tanks, and coolant tubes. This helps simplify installation, reduce maintenance, and improve reliability in dusty woodworking and sign-making environments.

For OEM, wholesale, or machine upgrade projects, this 6KW ER32 air cooled CNC spindle motor can be matched with a proper 300Hz VFD and configured for your application requirements.

 TECHNICAL SPECIFICATIONS

Key specifications for the Square ER32 6KW Air Cooled CNC Spindle Motor include 380V input, 6KW rated power, 12A current, 300Hz frequency, 10,000–18,000 RPM speed range, ER32 tool connection, 15.3KG weight, and air-cooled operation for engraving and routing machines.

 APPLICATIONS & USE CASES

Wood CNC Machining

Acrylic CNC Machining

Soft Metals CNC Machining

 FEATURES OF CNC AIR COOLED SPINDLE MOTOR

Zhong Hua Jiang ER32 6KW Square Air Cooled Spindle Motor is a high-performance component designed to deliver power, precision, and durability to your CNC engraving, milling, and cutting projects. Whether you're a professional workshop operator or a small business owner tackling demanding applications, this spindle motor offers features that are ideal for heavy-duty and industrial use.

Equipped with an ER32 collet for secure holding of larger tools, it delivers speeds from 10,000 to 18,000 RPM with a runout of less than 0.01mm, ensuring high accuracy and stability even during prolonged heavy operation. The air-cooled design efficiently dissipates heat without the need for additional water systems, making it low-maintenance and reliable for robust setups, while its 220V/380V compatibility and intelligent control system simplify integration into various CNC routers.

With four upgraded bearings that extend its lifespan up to three times longer than standard models, this motor excels in tasks like milling wood, acrylic, soft metals, and heavier materials, reducing noise and vibration for smoother, more efficient results. Often bundled with a VFD kit for easy speed control, it's a powerful upgrade for enhancing your machine's performance without complexity.

Key Features of Air Cooled CNC Spindle Motor

User-Friendly Control 

Zhong Hua Jiang ER32 6KW Air Cooled Spindle Motor features an intelligent control system, designed for ease of operation, making it accessible for users of all skill levels.

High-Precision Collet System

Equipped with an ER32 collet, ensuring secure tool holding, minimal runout, and precise machining for consistent results.

Advanced GRBL Compatibility

Integrated with program logic controller (PLC) compatibility, allowing easy adjustments for speed (10000-18000 RPM) and other parameters to suit various project needs.

Reliable Electrical Components

All electrical components, supporting 380V and 12A current, are branded for stability and reliability, ensuring long-lasting performance.

Accurate Speed Regulation

Features precise speed control with a range of 10000-18000 RPM, enabling smooth and accurate operation for diverse CNC applications.

Optimized Air-Cooling Design

The specially-designed air cooling system (110*122mm, 380mm, 15.3KG) ensures efficient heat dissipation, enhancing durability and performance for extended CNC operations.

 ADVANTAGES OF AIR COOLED SPINDLE MOTOR

Advanced Dynamic Balance Design 

Innovative & advanced dynamic balancing technology

Effectively reduce the noise

Increase stability in the working process

Extended Working Life

Authentic 4pcs upgraded

Superior durability steel bearings

All copper lengthening coil of rotor

Working life can reach 2 years for 8 hours / day

Our Spindle Motor	Other Spindle Motor
Runout off less than 0.005mm	Runout off 0.05mm

High Accuracy & Concentricity 

Further processing for spindle motor

Runout off of the spindle motor is less than 0.005mm

10 times precision beyond normal spindle motor

 10 TIMES PRECISION RUNOUT OFF 

Easy and Fast Installtion 

Equipped with pre-soldered aviation wire for quick installation

Installation holes on both sides

 PACKAGE LIST OF AIR COOLED SPINDLE MOTOR

Whether you're a hobbyist or a professional CNC workshop, we have the ideal Zhong Hua Jiang Air Cooled Spindle Motor solution for you. Our Air Cooled Spindle Motors support a wide range of projects, from intricate engravings to heavy-duty cuts, suitable for various skill levels. If the standard configuration doesn't meet your needs, please feel free to contact our professional sales team to customize the perfect Air Cooled Spindle Motor solution for your projects.

 RECOMMENDED AIR COOLED SPINDLE MOTORS

Besides the Zhong Hua Jiang 6KW ER32 Air Cooled Spindle Motor, we offer a variety of other spindle motor models to suit diverse CNC project needs. Our lineup includes the 0.8KW/1.5KW air cooled spindle motor for compact precision tasks, the 2.2KW/3KW air cooled spindle motor for high-performance engraving and cutting on wood, acrylic, and soft metals, the 4KW/5KW/7.5KW air cooled spindle motor for larger-scale professional projects, and specialized water-cooled spindle options for enhanced versatility.

ER11 0.8KW Air Cooled Spindle Motor

ER11 1.5KW Air Cooled Spindle Motor

ER20 2.2KW Air Cooled Spindle Motor

ER20 3KW Air Cooled Spindle Motor

ER11 1.5KW Air Cooled Spindle Motor

ER20 2.2KW Air Cooled Spindle Motor

ER20 3KW Air Cooled Spindle Motor

ER25 4KW Air Cooled Spindle Motor

ER32 5KW Air Cooled Spindle Motor

ER32 7.5KW Air Cooled Spindle Motor

Round Air Cooled Spindle Motor Kits 

Square Air Cooled Spindle Motor Kits 

 COMPANY PROFILE

 CNC SPINDLE MOTOR MANUFACTURER 

 WHY CHOOSE US

Quality Assurance Superior quality performance Strict quality control	Patents and Certifications Several patents for air-cooled spindle motors	Additional Brand Value Brand value highly recognized by the market
Reasonable Price Direct factory sales Highly cost performance	Full Time Service Professional technical support Close and quick customer service	Fast and Reliable Delivery Fast and efficient delivery Real-time tracking and updates

 LEADING CNC MACHINE/CNC SPINDLE MOTOR 

 MANUFACTURER SINCE 2000 

 OUR PRODUCT RANGE

CNC Router Machines 

Our state-of-the-art Zhong Hua Jiang CNC router machines, including models like the 3018, 3020, 3040, and 6090, guarantee precision, efficiency, and reliability, essential for high-quality engraving and cutting projects.

CNC Spindle Motors 

Power your CNC projects with our advanced spindle motors, including air-cooled and water-cooled options, designed to meet rigorous performance standards for diverse materials.

CNC Accessories 

Enhance your CNC operations with our precision accessories, such as limit switches, Z probes, and emergency stop buttons, perfect for ensuring safety and accuracy.

Electrical Wires 

Ensure reliable and safe connections with our double-shielded cables and shielded chain cables, designed to minimize signal interference and enhance durability.

Stepper Motors 

Drive your CNC machine with our high-performance stepper motors, offering precise control and robust operation for consistent project outcomes.

 PRODUCT CERTIFICATION

 CUSTOMER FEEDBACK

 FAQ

What is the Square ER32 6KW Air Cooled Spindle Motor used for?

It is designed for CNC routers, engraving machines, milling machines, woodworking equipment, sign-making machines, and industrial CNC upgrade projects that require higher cutting power and stable 10,000–18,000 RPM operation.

What are the main specifications of this 6KW air cooled CNC spindle motor?

The main specifications are 380V voltage, 6KW rated power, 12A current, 300Hz frequency, ER32 connection, 15.3KG weight, air cooling, and a recommended 300Hz VFD for speed control.

What materials can the 6KW ER32 spindle motor machine?

It can process wood, MDF, acrylic, plastics, PVC, PCB materials, plexiglass, and soft metals such as aluminum and brass when the correct tool, feed rate, and spindle speed are used.

What is included in the package?

The package includes 1 piece 6KW square air cooled spindle motor, ER32-6/12.7mm collet, and 2 pieces wrenches for quick installation. A suitable 300Hz VFD is required for operation.

Does this spindle motor need a water pump?

No. This is an air cooled spindle motor, so it does not require a water pump, water tank, coolant pipes, or regular coolant maintenance. It is easier to install and maintain than water-cooled systems.

Is this 6KW spindle suitable for OEM or machine builders?

Yes. It is suitable for CNC router manufacturers, equipment integrators, distributors, and OEM projects. Logo, packaging, voltage configuration, collet options, and matched spindle/VFD solutions can be discussed based on your project requirements.

Can I buy this 6KW air cooled spindle motor in bulk?

Yes. Zhong Hua Jiang supports wholesale orders, distributor cooperation, and bulk purchasing. Trial orders are available for standard products, and larger B2B orders can receive factory-direct support.

What warranty and after-sales support do you provide?

The spindle motor and related accessories are covered by a 12-month warranty. Technical support is available for installation, VFD parameter setup, wiring guidance, and troubleshooting.

How long is the lead time?

For standard 6KW air cooled spindle motors, typical lead time is 3–7 working days after payment. Customized or bulk orders usually require 10–20 days depending on quantity and project details.