ER20 3KW 220V/380V Quiet Water Cooled Spindle Motor Kit With VFD Kit for CNC Router Engraving Machine

 VIDEO OF CNC SPINDLE MOTOR

 CATALOGUE OF ZHONG HUA JIANG (PDF DOWNLOAD)

  CNC Router Machine Catalogue 2025.pdf

 ER20 3KW WATER COOLED SPINDLE MOTOR KIT FOR SALE

The Zhong Hua Jiang ER20 3KW Water Cooled Spindle Motor Kit with VFD is designed for CNC routers, engraving machines, milling machines, and long-duty-cycle cutting applications that require stable speed control, low noise, and efficient heat dissipation.

This complete CNC spindle motor kit includes a Φ100mm 3KW round water cooled spindle motor, 3.7KW VFD inverter, Φ100mm clamp mount, water pump, 5-meter water hose, ER20 collets from 1mm to 13mm, drill bits, aviation wire, power wire, and wrenches for installation.

The ER20 collet system supports a wide tool range for woodworking, acrylic machining, plastics, MDF, PCB, PVC, and soft metal engraving. With 10,000–24,000 RPM speed control and a water-cooled structure, it is suitable for professional workshops, machine builders, distributors, and B2B buyers.

For OEM, wholesale, or CNC machine upgrade projects, this 3KW water cooled spindle motor kit provides a ready-to-install solution with VFD speed control, cooling accessories, and factory-direct support from Zhong Hua Jiang.

 TECHNICAL SPECIFICATIONS & KIT CONFIGURATION

Key specifications include 3KW spindle power, ER20 collet connection, Φ100mm spindle diameter, 100mm × 309mm spindle size, 8.8kg spindle weight, 10,000–24,000 RPM speed range, VFD-driven speed control, and water-cooled operation for lower noise and stable long-time machining.

 APPLICATIONS & USE CASES

Wood CNC Machining

Acrylic CNC Machining

Soft Metals CNC Machining

 FEATURES OF CNC WATER COOLED SPINDLE MOTOR

Zhong Hua Jiang ER20 100mm 3KW Water-Cooled Spindle Motor features an intelligent control system and is designed for simple, user-friendly operation, suitable for users of all skill levels.

This is a Φ100mm round water-cooled spindle motor with ER20 collet chuck. It delivers 3KW of power, supports 10000–24,000 RPM speed range, and achieves runout less than 0.005mm. Equipped with four upgraded high-precision steel bearings for up to 3× longer lifespan than standard models, it incorporates advanced dynamic balancing technology for minimal noise and vibration.

The water-cooled design provides excellent heat dissipation, significantly lower operating temperatures, and much quieter performance, making it ideal for long-duration, high-precision engraving and cutting. 

Key Features of Water Cooled CNC Spindle Motor

User-Friendly VFD Control

Zhong Hua Jiang ER20 3KW Quiet Water Cooled Spindle Motor kit 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 ER20 collet, ensuring secure tool holding, minimal runout, and precise machining for consistent results.

VFD / PLC Speed Control Compatibility

Integrated with program logic controller (PLC) compatibility, allowing easy adjustments for speed (10000-24000 RPM) and other parameters to suit various project needs.

Reliable Electrical Components

All electrical components, supporting 220V/380V and 10A current, are branded for stability and reliability, ensuring long-lasting performance.

Accurate Speed Regulation

Features precise speed control with a range of 10000-24000 RPM, enabling smooth and accurate operation for diverse CNC applications.

Optimized Water-Cooling Design

The specially designed water-cooling system for the Φ100mm spindle body ensures efficient heat dissipation with reduced noise, enhancing durability and performance for extended CNC operations.

 ADVANTAGES OF WATER 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 less than 0.005mm	Runout 0.05mm

High Accuracy & Concentricity

Further processing for spindle motor

Runout of the spindle motor is less than 0.005mm

10 times precision beyond normal spindle motor

 10 TIMES PRECISION RUNOUT OFF 

Easy and Fast Installation

Equipped with pre-soldered aviation wire and power wire for quick installation

 THE VFD HAS BEEN PROGRAMMED  

 PACKAGE OF SPINDLE MOTOR

Whether you're a hobbyist or a professional CNC workshop, we have the ideal Zhong Hua Jiang water cooled spindle motor solution for you. Our water 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 water cooled spindle motor solution for your projects.

 RECOMMENDED WATER COOLED SPINDLE MOTOR KITS

Besides the Zhong Hua Jiang 3KW ER20 water cooled spindle motor kit, we offer a variety of other water cooled spindle motor models to suit diverse CNC project needs. Our lineup includes the 1.5KW water cooled spindle motor kit for high-performance engraving and cutting on wood, acrylic, and soft metals, the 2.2KW water cooled spindle motor kit for professional projects, and specialized air-cooled spindle options for enhanced versatility.

ER11 1.5KW Water Cooled Spindle Motor Kits

ER20 2.2KW Water Cooled Spindle Motor Kits

 COMPANY PROFILE

 CNC SPINDLE MOTOR MANUFACTURER 

 WHY CHOOSE ZHONG HUA JIANG

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 CNC 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: ER20 3KW WATER COOLED SPINDLE MOTOR KIT

1. What is included in the ER20 3KW water cooled spindle motor kit?

The kit includes one Φ100mm 3KW round water cooled spindle motor, one 3.7KW VFD inverter, one Φ100mm clamp mount, one water pump, 5 meters of water hose, ER20 collets from 1mm to 13mm, drill bits, aviation wire, power wire, and two wrenches.

2. What CNC machines is this 3KW spindle motor kit suitable for?

It is suitable for CNC routers, engraving machines, milling machines, and woodworking machines that need stable high-speed cutting, carving, engraving, drilling, and routing performance.

3. What materials can the 3KW water cooled spindle motor machine?

It can machine wood, MDF, acrylic, PVC, plastics, PCB boards, plexiglass, and soft metals such as aluminum and brass when matched with the correct tooling, feed rate, and cooling setup.

4. Why choose a water cooled spindle motor instead of an air cooled spindle?

A water cooled spindle usually provides quieter operation and more stable temperature control during long working cycles. It is a good choice for workshops that require continuous machining, high surface finish, and lower operating noise.

5. Does the kit include a VFD inverter?

Yes. This kit includes a 3.7KW VFD inverter for spindle speed control. The VFD can be used to adjust spindle speed for different materials and machining requirements.

6. What is the spindle size and weight?

The spindle size is Φ100mm × 309mm, and the spindle weight is approximately 8.8kg. Please confirm that your CNC machine frame and Z-axis mount can support this spindle size and weight.

7. Can I buy this spindle motor kit in bulk or as a distributor?

Yes. Zhong Hua Jiang supports distributors, wholesalers, machine builders, and OEM customers with factory-direct pricing, stable supply, export support, and customization options.

8. Do you offer OEM or customized spindle motor kits?

Yes. Logo, packaging, voltage configuration, cable length, collet options, and kit accessories can be customized according to your project requirements.

9. What warranty and technical support do you provide?

We provide a 12-month warranty for spindle motors, VFDs, and accessories. Technical support is available for installation, VFD parameter setup, wiring guidance, and troubleshooting.

10. How long is the lead time?

For standard kits, typical lead time is 3–7 working days after payment. For bulk or customized orders, production time is usually 10–20 days depending on quantity and configuration.