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

ER20 3KW Air Cooled Spindle Motor Kit With VFD

Zhong Hua Jiang ER20 3KW Air Cooled Spindle Motor Kit with VFD is designed for CNC routers, engraving machines, woodworking machines, acrylic cutting, PVC machining, MDF processing, and soft metal engraving. The kit includes a Φ100mm 3KW round air cooled spindle motor, matched 3.7KW VFD inverter, Φ100mm clamp mount, ER20 collets, drill bits, aviation wire, power wire, and wrenches for fast installation.

VIDEO OF CNC SPINDLE MOTOR

CATALOGUE OF ZHONG HUA JIANG (PDF Download)

   CNC Router Machine Catalogue 2025.pdf

AIR COOLED SPINDLE MOTOR KIT FOR SALE

Are you searching for an efficient and reliable spindle solution for CNC woodworking, engraving, acrylic cutting, or DIY CNC projects? Zhong Hua Jiang ER20 3KW Air Cooled Spindle Motor Kit is built for users who need strong cutting power, stable speed control, and easy integration with a CNC router system.

This compact yet powerful air cooled spindle motor kit supports a wide range of CNC applications, from detailed wood engraving and sign making to precise acrylic machining and soft metal milling. With ER20 tool holding, a matched VFD inverter, and reliable air cooling, it helps CNC users improve accuracy, productivity, and machine uptime.

The air cooled design removes the need for a water pump, water tank, or coolant pipe, making the spindle easier to install and maintain. It is suitable for hobbyists, small workshops, schools, makers, and professional CNC users who want a practical 3KW spindle upgrade.

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 Kit features intelligent VFD control, stable speed adjustment, and easy operation for users of different skill levels.

The kit includes the ER20 100mm 3KW round air cooled spindle motor, matched VFD, Φ100mm clamp mount, ER20 collet set, aviation wire, power wire, wrenches, and drill bits. It is designed for reliable CNC routing, engraving, and cutting on wood, acrylic, PVC, MDF, plastics, PCB boards, and soft metals.

User-Friendly Control

The matched VFD inverter helps users adjust spindle speed for different materials and cutting conditions, making operation easier and more consistent.

High-Precision ER20 Collet System

The ER20 collet system provides secure tool holding, improved concentricity, and stable machining performance for engraving, cutting, and milling.

Advanced Controller Compatibility

The spindle kit can be integrated with common CNC control systems, allowing speed control and parameter adjustment for different CNC router applications.

Reliable Electrical Components

Stable electrical components, aviation wiring, and power wiring help support long-term operation and reduce installation complexity.

Accurate Speed Regulation

The VFD enables precise speed regulation, helping the spindle run smoothly during engraving, drilling, cutting, and milling.

Optimized Air-Cooling Design

The Φ100mm x 308mm, 9kg air cooled spindle body provides efficient heat dissipation without water cooling accessories, making it simple to maintain.

ADVANTAGES OF AIR COOLED SPINDLE MOTOR

Advanced Dynamic Balance Design

Innovative dynamic balancing technology helps reduce noise, lower vibration, and improve stability during high-speed CNC machining.

Extended Working Life

The spindle uses upgraded steel bearings and an all-copper rotor coil to improve durability. Under proper operation and maintenance, it supports stable long-term daily use.

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

High Accuracy & Concentricity

Further processing improves spindle accuracy. The runout of the spindle motor is less than 0.005mm, helping achieve smooth engraving and cleaner cutting edges.

 10 TIMES PRECISION RUNOUT OFF 

Easy and Fast Installation

The kit includes pre-soldered aviation wire and power wire for quick installation. The VFD has been programmed to simplify setup for CNC router users.

 THE VFD HAS BEEN PROGRAMMED 

PACKAGE OF AIR COOLED SPINDLE MOTOR

Whether you are a hobbyist or a professional CNC workshop, Zhong Hua Jiang can provide an air cooled spindle motor kit solution for your CNC machine. If the standard configuration does not meet your needs, our sales and engineering team can help customize a suitable spindle motor kit.

RECOMMEND AIR COOLED SPINDLE MOTOR KIT

Besides the Zhong Hua Jiang ER20 3KW air cooled spindle motor kit, we offer 0.5KW, 0.8KW, 1.5KW, 2.2KW, and 4KW air cooled spindle motor kits for different CNC router sizes, material types, and production requirements.

 ROUND 

ER11 0.5KW Air Cooled Spindle Motor Kit

ER11 0.8KW Air Cooled Spindle Motor Kit

ER11 1.5KW Air Cooled Spindle Motor Kit

ER16 1.5KW Air Cooled Spindle Motor Kit

ER20 2.2KW Air Cooled Spindle Motor Kit

 SQUARE 

ER11 1.5KW Air Cooled Spindle Motor Kit

ER16 1.5KW Air Cooled Spindle Motor Kit

ER20 2.2KW Air Cooled Spindle Motor Kit

ER20 3KW Air Cooled Spindle Motor Kit

ER25 4KW Air Cooled Spindle Motor Kit

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 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 ER20 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, feed rate, spindle speed, material hardness, and CNC machine rigidity.

2. What is included in the ER20 3KW air cooled spindle motor kit?

The kit includes a Φ100mm 3KW round air cooled spindle motor, 3.7KW VFD inverter, Φ100mm clamp mount, ER20 collets, drill bits, aviation wire, power wire, and wrenches. It is prepared as a practical spindle upgrade package for CNC routers.

3. Is an air cooled spindle better than a water cooled spindle?

Air cooled spindles are easier to install and maintain because they do not require a water pump, tank, or cooling pipes. They are a good choice for users who want simple setup and reliable daily CNC operation. Water cooled spindles may be preferred when lower noise or long continuous machining in hot environments is required.

4. Can I buy the 3KW air cooled CNC spindle motor in bulk or as a distributor?

Yes. Zhong Hua Jiang welcomes global distributors, resellers, wholesalers, and OEM partners. We provide factory-direct pricing, stable supply, export support, and technical assistance for bulk orders.

5. Do you offer OEM or customization services?

Yes. OEM and ODM services are available for logo, packaging, voltage options, collet configuration, bearing configuration, wire length, and kit combinations. Our engineering team can help tailor the spindle motor kit for specific CNC machine requirements.

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

We support flexible order quantities. For standard ER20 3KW air cooled spindle motor kits, small trial orders are accepted before bulk purchasing. For OEM or customized kits, MOQ can be discussed according to project details.

7. How long is production and delivery time?

For standard kits, 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.

8. What warranty is provided for the 3KW air cooled CNC spindle motor?

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

9. Do you provide after-sales technical support?

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