ER20 100mm 3KW 220V/380V 4 Bearings Ceramic Air Cooled CNC Spindle Motor for CNC Router Engraving Machine

ER20 3KW Round Air Cooled CNC Spindle Motor

Zhong Hua Jiang ER20 3KW Round Air Cooled CNC Spindle Motor is designed for CNC routers, engraving machines, woodworking machines, acrylic cutting, MDF machining, PVC processing, PCB work, and soft metal milling. With 3KW power, ER20 collet compatibility, 220V/380V voltage options, 300Hz frequency, and 10000-18000 RPM speed range, it provides stable performance for professional CNC machining and workshop upgrades.

VIDEO OF CNC SPINDLE MOTOR

CATALOGUE OF ZHONG HUA JIANG (PDF Download)

   CNC Router Machine Catalogue 2025.pdf

AIR COOLED SPINDLE MOTOR FOR SALE

Are you searching for an efficient and reliable solution to power your CNC woodworking, engraving, acrylic cutting, or DIY CNC projects? Zhong Hua Jiang ER20 3KW air cooled spindle motor is built for users who need strong cutting power, stable speed control, and low-maintenance cooling.

This compact and robust round air cooled spindle motor is suitable for hobbyists, students, workshops, makers, and professional CNC users. It supports accurate engraving, smooth cutting, and stable milling on wood, acrylic, MDF, PVC, plastics, PCB boards, and soft metals such as aluminum and brass.

Compared with water cooled spindle motors, the air cooled design does not require a water pump, tank, or coolant pipe. It is easier to install, easier to maintain, and practical for CNC router upgrades where reliability and simplicity matter.

TECHNICAL SPECIFICATIONS

APPLICATIONS & USE CASES

Wood

Acrylic

Soft Metals

FEATURES OF CNC AIR COOLED SPINDLE MOTOR

Zhong Hua Jiang ER20 3KW Air Cooled Spindle Motor is a high-performance component designed to deliver power, precision, and durability to CNC engraving, milling, and cutting projects. It is suitable for professional workshops, small businesses, schools, and CNC machine builders that need stable spindle performance.

Equipped with an ER20 collet for secure tool holding, this spindle motor delivers 10000-18000 RPM speed with low runout, supporting accurate machining during long working sessions. Its air cooled structure improves heat dissipation without extra water cooling equipment.

With upgraded bearings, an all-copper rotor design, and dynamic balancing, this motor reduces noise and vibration while supporting smoother results on wood, acrylic, MDF, PVC, plastics, and soft metals.

Key Features of Air Cooled CNC Spindle Motor

User-Friendly Control

The spindle motor can work with a matched 300Hz VFD for speed adjustment and stable control, making it easier to match spindle speed with different materials and tools.

High-Precision Collet System

The ER20 collet system provides strong tool clamping, reduced vibration, and improved machining consistency for engraving, cutting, drilling, and milling.

Advanced Controller Compatibility

The spindle supports CNC control systems and VFD speed control for practical adjustment across common CNC router and engraving machine applications.

Reliable Electrical Components

The motor supports 220V/380V and 10A current, with reliable electrical design for stable operation and long-term use.

Accurate Speed Regulation

The 10000-18000 RPM speed range helps users handle roughing, finishing, engraving, and cutting tasks with better control.

Optimized Air-Cooling Design

The air cooling system, with Φ100mm x 308mm spindle size and 9KG weight, helps dissipate heat efficiently and supports extended CNC operation.

ADVANTAGES OF AIR COOLED SPINDLE MOTOR

Advanced Dynamic Balance Design

Advanced dynamic balancing technology helps reduce noise, improve spindle stability, and support smoother high-speed CNC machining.

Extended Working Life

The spindle uses four upgraded steel bearings and an all-copper extended rotor coil. With proper operation and maintenance, working life can reach 2 years for 8 hours per day.

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

High Accuracy & Concentricity

Further processing improves spindle accuracy. Runout can be less than 0.005mm, delivering up to 10 times higher precision than normal spindle motors.

 10 TIMES PRECISION RUNOUT OFF 

Easy and Fast Installation

The spindle is equipped with pre-soldered aviation wire for quick installation, and the spindle structure is designed for convenient mounting and CNC router upgrades.

PACKAGE LIST OF AIR COOLED SPINDLE MOTOR

Whether you are a hobbyist or a professional CNC workshop, Zhong Hua Jiang can provide a suitable air cooled spindle motor solution. If the standard configuration does not meet your needs, our team can customize voltage, wiring, bearing configuration, spindle type, or kit combination for your project.

RECOMMEND AIR COOLED SPINDLE MOTOR

Besides the Zhong Hua Jiang 3KW ER20 100mm air cooled spindle motor, we offer 0.8KW, 1.5KW, 2.2KW, 4KW, 5KW, 6KW, and 7.5KW air cooled spindle motors for different CNC router sizes, material types, and production requirements.

ER11 0.8KW Air Cooled Spindle Motor

ER11 1.5KW Air Cooled Spindle Motor

ER20 2.2KW 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 6KW 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 High cost performance	Full Time Service Professional technical support 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

Zhong Hua Jiang CNC router machines, including 3018, 3020, 3040, and 6090 models, are designed for precision engraving, cutting, and small-batch production.

CNC Spindle Motors

Our spindle motor range includes air cooled and water cooled spindle motors for woodworking, acrylic, plastics, PCB, and soft metal processing.

CNC Accessories

CNC accessories include limit switches, Z probes, emergency stop buttons, collets, clamps, and other parts for safer and more accurate CNC operation.

Electrical Wires

Double-shielded cables and shielded chain cables help reduce signal interference and improve connection reliability in CNC systems.

Stepper Motors

High-performance stepper motors provide precise motion control for CNC routers, engraving machines, and automation equipment.

PRODUCT CERTIFICATION

CUSTOMER FEEDBACK

FAQ

1. What materials can the 3KW Air Cooled CNC Spindle Motor work with?

It is suitable for engraving, cutting, and milling wood, acrylic, MDF, plastics, PCB boards, PVC, plexiglass, and soft metals such as aluminum and brass. Final performance depends on tool type, spindle speed, feed rate, material hardness, and CNC machine rigidity.

2. Does this 3KW round air cooled spindle motor need a VFD?

Yes. This spindle should be equipped with a 300Hz VFD to control speed and protect the motor during CNC machining. Correct VFD parameter setup is important for safe and stable operation.

3. Can I purchase the 3KW Air Cooled CNC Spindle Motor in bulk or as a distributor?

Yes. Zhong Hua Jiang has over 20 years of R&D and manufacturing experience, and we welcome global distributors, resellers, and wholesalers. We offer factory-direct pricing, stable supply, and export support.

4. Do you offer OEM or customization services?

Yes. OEM and ODM services are available for logo, packaging, voltage specifications, collet types, bearing configurations, wire length, and kit combinations. Our engineering team can tailor the spindle motor to your project requirements.

5. What is your minimum order quantity (MOQ)?

We are flexible with order quantities. For standard 3KW air cooled CNC spindle motors, small trial orders are accepted before bulk purchases. For OEM or customized products, MOQ can be discussed based on project details.

6. How long is production and delivery time?

For standard products, typical lead time is 3-7 working days after payment. For large or customized orders, production usually takes 10-20 days. Shipping time depends on destination country and logistics method.

7. What warranty do you provide for the 3KW Air Cooled CNC Spindle Motor?

The spindle motor and related accessories are covered by a 12-month warranty. Each product is inspected before shipping, and quality-related parts are supported during the warranty period.

8. Do you provide after-sales technical support?

Yes. Zhong Hua Jiang offers lifetime technical support by email, video call, or online chat. Our engineers can assist with installation, VFD parameter setup, wiring, speed control, and troubleshooting.