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ER20 100mm 3KW Round Water Cooled
220V/380V
10000-24000 RPM
8.8kg
Water Cooled
ER20
3KW
10A
Ф100mm*309mm
The Zhong Hua Jiang ER20 3kW water-cooled CNC spindle motor features a Φ100mm round housing, ER20 toolholding interface and a published speed range of 10,000–24,000 RPM. Designed for CNC router integration and precision engraving, it is offered in 220V and 380V versions and requires a separately matched variable frequency drive (VFD) and circulating water-cooling equipment.
This is a spindle-motor-only product, not a VFD kit. Its compact, water-cooled structure is intended for machine builders, professional workshops, equipment distributors and OEM purchasing teams specifying a replacement or new CNC spindle assembly.
Request a Quote for the ER20 3kW Spindle
Video footage is provided as a visual product reference. Confirm the selected motor version, connecting components and machine specifications before ordering.
CNC Router Machine Catalogue 2025.pdf
For CNC routing and milling, the spindle motor supplies rotational power to an ER20 collet-held cutting tool. The 3kW spindle output, Φ100mm housing and 400Hz rated frequency support compatible CNC equipment working with wood, MDF, acrylic, PVC and other plastics. Light machining of aluminum or brass depends on machine rigidity, cutting parameters and tooling.
The published product dimensions are Φ100 × 309mm, with a stated motor weight of 8.8kg. Select a compatible 100mm spindle mount, allow space for the spindle body and cooling connections, and account for the spindle mass in the Z-axis drive and support structure.
The ER20 collet interface allows users to choose an appropriate collet for each cutting-tool shank. Collet and nut dimensions, permitted tool diameter, maximum working speed and assembly balance must match the selected tooling; the ER20 interface alone does not establish a safe universal maximum cutter size.
Get 3kW CNC Spindle Motor Specifications
The published product specification is summarized below. Check the actual motor nameplate when selecting the 220V or 380V version, particularly for current, VFD output voltage and any model-specific differences.
| Voltage | 220V/380V | 1 pcs 3KW Round Spindle Motor. |
| Speed | 10,000–24,000 | 1 pcs Pre-soldered aviation wire for quick installation. |
| Power | 3KW | This spindle should be equipped with 400Hz VFD. |
| Electric Current | 10A | |
| Frequency | 400Hz | |
| KG | 8.8KG | |
| Connection | ER20 | |
| Cooling | Water Cooled | |
| Usage | Engraving Machines |
Additional published dimensions: Φ100 × 309mm overall spindle size; 8.8kg stated weight. The product listing publishes 10A but does not provide a separate current rating for each voltage option.
Electrical integration: The 220V/380V specifications describe available motor configurations. The spindle must be powered through a correctly rated VFD with 400Hz output capability—not connected directly to AC mains. Verify the drive input supply, output rating, grounding, protective settings and motor nameplate with a qualified installer.
Supply scope: The standard motor-only package lists one spindle motor and one pre-soldered aviation cable. The VFD, water pump, hoses, mounting clamp and other components are not listed as standard inclusions for this item.
Confirm Voltage and VFD Compatibility
Machine suitability depends on the workpiece, cutter design, feed rate, depth of cut, workholding, cooling and the rigidity of the CNC frame. The product is commonly considered for the following machine applications.
For CNC woodworking machines, the ER20 3kW spindle can be paired with suitable router bits for pattern engraving, carving, trimming, grooving and profile cutting. Specify cutter diameter and spindle speed to suit the wood species, panel structure and machine feed capability.
For acrylic sheet, PVC and plastics, control chip evacuation, frictional heating and surface finish through cutter geometry, spindle speed and feed. A stable cooling circuit helps manage spindle motor temperature; it does not replace any cutting-fluid or material-specific process requirements.
Light-duty cutting or engraving on aluminum and brass may be feasible with a suitable machine, cutter, workholding and process. Confirm torque at the intended working speed and establish suitable chip removal and machine stiffness before treating the spindle as a metalworking solution.
Discuss Your CNC Material and Application
This spindle combines an ER20 tooling interface, a Φ100mm cylindrical mounting surface and external water circulation. The following details help machine builders determine the required spindle drive, cooling arrangement and mechanical fit.
The product is specified for 400Hz operation with an advertised 10,000–24,000 RPM working range. Use a VFD capable of the required electrical output frequency and voltage. Confirm minimum operating speed, acceleration, deceleration, motor protection and control method with the drive and machine documentation.
The ER20 interface supports interchangeable collets for compatible tool-shank diameters. Proper seating, clean mating surfaces, matched collet/nut parts and manufacturer-approved tightening procedures are important for secure retention and machining accuracy.
A compatible VFD may be controlled by an appropriate CNC controller or PLC through supported analog or digital interfaces. Controller integration depends on the actual VFD model, command wiring and parameter settings; the spindle motor alone does not provide an integrated GRBL or PLC controller.
The product listing identifies 220V and 380V variants. Buyers should specify the required motor rated voltage and request the matching VFD configuration. Do not apply the listed 10A indiscriminately to every variant without checking its nameplate and motor documentation.
External coolant circulation transfers heat away from the spindle housing. A correctly sized pump or chiller, suitable hoses and dependable flow are required during operation. Prevent leaks at the electrical connector and avoid running the motor without the specified cooling flow.
A 100mm cylindrical housing allows installation with a suitable spindle mounting clamp. Confirm the published 309mm motor length against the mounting layout, cable clearance, water inlet/outlet positions and Z-axis payload capacity.
Request an OEM Spindle Integration Quote
Balancing, bearing selection, toolholding condition and machine installation all affect noise, vibration, runout and usable cutting performance. Comparative performance illustrations do not replace an inspection method or test report for the exact ordered motor.
Dynamic balancing is described as a feature intended to reduce vibration and noise during CNC machining. Overall vibration also depends on tool balance, collet fit, spindle mounting, speed and machine resonance.
The product description identifies a four-bearing spindle design. Bearing life depends on spindle load, tool balance, operating speed, cooling, contamination and maintenance; no fixed service-life multiplier can be assumed for every application.
| Zhong Hua Jiang Spindle Example | Illustrative Comparison |
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| Published example: runout below 0.005 mm | Illustrative comparison: 0.05 mm |
The illustrated product comparison refers to runout below 0.005mm as a published example. For a purchase specification, request the precise measurement location, tool or test-bar setup, ambient and operating conditions, gauge method and acceptance tolerance for the ordered spindle.
The supplied aviation lead supports electrical integration, but correct pin identification, protective earth, cable routing and VFD installation must be confirmed before startup. Check cooling flow and spindle rotation direction before installing any cutting tool.
The standard package list identifies one 3kW round water-cooled spindle motor and one pre-soldered aviation cable. A suitable 400Hz VFD and external water-cooling equipment are required for a working installation and are not stated as part of this standard motor-only configuration.
| 1x | 1 pcs 3KW Round Water Cooled Spindle Motor. |
| 1x | 1 pcs Pre-soldered aviation wire for quick installation. |
| This Water Cooled Spindle Motor should be equipped with 400Hz VFD |
Before purchase, confirm whether any ER20 collets, collet nut, 100mm clamp, coolant hoses, water pump, VFD or additional wiring are being quoted as optional items. The package photographs show product packaging arrangements and do not override the written contents listed for this motor.
Check Package Contents and Spare Parts
Select the motor-only version when your machine already has a correctly rated 400Hz VFD, cooling loop and mounting hardware. A separately quoted spindle-and-VFD kit may be more convenient for new-machine construction, but its included accessories must be confirmed from the specific kit listing.
| Component | This spindle-only product | Separately offered VFD kit |
| Spindle motor | Included: 3kW ER20 water-cooled motor | Included subject to kit configuration |
| Aviation cable | Included: pre-soldered lead | Confirm cable specification |
| VFD / inverter | Not listed in standard motor-only package | Included in a matched VFD kit if specified |
| Water pump and hoses | Not listed in standard motor-only package | Confirm the selected kit contents |
| Φ100mm clamp and ER20 accessories | Confirm separately | Confirm the selected kit contents |
Request a Motor or VFD Kit Quotation
Compare ER11 and ER20 water-cooled spindle motors across power classes, housing sizes and supply options. The product cards below link to additional motor-only and VFD-kit listings.
Zhong Hua Jiang presents its company history as beginning with CNC engraving spindle production in 2000, followed by VFD products and CNC machinery. The Zhong Hua Jiang brand was introduced in 2018. Buyers can request technical product documentation and discuss manufacturing, distributor and OEM requirements with the sales team.
The company describes experience in CNC spindle motor manufacturing and related CNC equipment. Its publicly described patent work includes air-cooled spindle products; such company-level information should not be interpreted as a patent or certification for every water-cooled model.
Huajiang reports international sales activity. OEM and distributor buyers may request product drawings, production specifications, quality-control information and shipment terms applicable to their selected spindle configuration.
Contact Zhong Hua Jiang for OEM Supply
For equipment manufacturers and industrial distributors, the supplier relationship should cover product selection, inspection documentation, compatible accessory sourcing, service communication and order-specific logistics.
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| Quality Assurance Superior quality performance Strict quality control | Patents and Documentation Several patents for air-cooled spindle motors | Additional Brand Value Established brand and product range |
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| Reasonable Price Direct factory sales Factory-direct sourcing | Full Time Service Professional technical support Close and quick customer service | Delivery Coordination Order-specific dispatch schedule Shipping information by arrangement |
For a formal purchase order, confirm the exact motor variant, voltage, required test criteria, any applicable documentation, lead time, commercial terms and technical support scope in the quotation.
Zhong Hua Jiang lists CNC router machines including 3018, 3020, 3040 and 6090 series; select spindle power and mechanical fit according to the chosen machine.
Water-cooled and air-cooled spindle motors are offered in several power classes and tooling interfaces for different CNC applications.
Spindle mounts, water-cooling components, Z probes, limit switches and safety-related components may be evaluated alongside machine integration requirements.
Shielded electrical cables and cable-chain types can be selected by considering the VFD installation, wiring layout and operating environment.
Motion-control motors support axis positioning in CNC equipment and should be selected to match controller, drive and machine load requirements.
The image above shows company documentation presented on the product page. Ask the supplier which documents apply to the exact spindle motor model, ordered voltage variant and destination market before relying on a specific conformity claim.
Customer feedback images are shown for general product reference. Request configuration-specific inspection information or application examples when assessing an OEM project.
Ask for Technical Documentation and Pricing
It is a CNC spindle motor for routing, engraving, carving and milling applications. Typical workpieces include wood, MDF, acrylic, PVC and other plastics. Light work on aluminum or brass requires suitable tooling and a rigid, correctly configured CNC machine.
This page describes a spindle-motor-only configuration. The published package includes one 3kW motor and one pre-soldered aviation lead. The matching VFD and circulating cooling equipment are not listed as standard inclusions.
The manufacturer listing specifies a Φ100mm round housing and overall dimensions of Φ100 × 309mm. Confirm the dimensional drawing and mounting clearances against your machine before ordering.
The product is listed as a 3kW CNC spindle motor. Select the drive and installation components using the actual voltage and current information from the selected motor nameplate.
Yes. The product listing identifies 220V and 380V versions. Specify the desired motor voltage when requesting a quote and confirm the matching VFD output voltage and nameplate current.
The published page lists 10A but does not separate current by motor voltage variant. For electrical design or purchase acceptance, obtain the rated-current value for the exact motor version.
The published rated frequency is 400Hz. Choose a VFD capable of the required output frequency and compatible with the motor’s power, voltage and current ratings.
No. This high-frequency spindle is intended to be powered through a correctly rated VFD. Electrical connection and grounding should be performed according to the motor, drive and machine documentation.
The product page gives 10,000–24,000 RPM. Permissible operating conditions depend on the selected motor version and VFD setup; confirm the applicable limits before use.
Use only a drive whose output frequency range and other electrical ratings meet the actual spindle requirements. A drive limited to normal mains-frequency output cannot provide the published 400Hz operation.
Ask About Spindle Compatibility
ER20 identifies the collet interface. Use a properly sized, compatible collet and nut for each tool shank, and confirm cutter diameter, balance and permitted operating speed.
The published motor-only package lists the spindle and pre-soldered aviation lead. ER20 collet contents are not separately identified in that package list; confirm the required sizes when ordering.
No integrated VFD or CNC controller is listed. Speed and start/stop functions require a separately compatible drive and machine-control arrangement.
A suitable CNC controller or PLC may issue commands to a compatible VFD through the drive’s supported control interface. Verify the controller-to-VFD wiring and protocol for your specific equipment.
Yes. A functioning external coolant circulation arrangement is required. The pump, tubing, coolant reservoir or chiller must be selected to match the spindle’s cooling requirements.
Do not operate a water-cooled spindle without the cooling flow required by its manufacturer. Check flow, hose condition and leakage protection before startup.
Use a clamp or mounting assembly compatible with a Φ100mm round spindle body. Check mounting force, clearance and the spindle weight against the machine Z-axis design.
The manufacturer listing specifies 8.8kg for the spindle motor. Allow for the mass of the clamp, cabling and any other mounted accessories during machine design.
Wood engraving, routing, grooving and profile cutting are common applications, subject to appropriate tooling, feeds, speeds and machine rigidity.
It can be evaluated for acrylic, PVC and similar plastic materials. Tool geometry and feed rates should control melting, edge finish and chip removal.
Light machining may be possible when tool choice, feeds, speeds, rigidity and process cooling are suitable. The 3kW power figure alone is not sufficient to qualify the machine for heavy metal removal.
Ask About Spindle Compatibility
The supplier’s comparison material cites runout below 0.005mm as an example. Confirm the test location, setup, inspection method and acceptance tolerance for your ordered configuration.
The product description refers to a four-bearing construction. Request the exact bearing configuration or drawing if this is a purchasing requirement.
No universal service life can be inferred from the published promotional text. Actual bearing and motor life varies with cutting loads, speed, cooling, contamination and maintenance. Request the applicable commercial warranty terms.
A compatible VFD, 100mm mount, coolant circulation equipment and suitable power/control wiring are typically needed in addition to the spindle. Confirm which accessories are already installed on the CNC machine.
A replacement is possible only if the 100mm mounting diameter, 309mm motor length, weight, tooling system, VFD output and cooling connections are compatible with the machine.
Specify the CNC machine model, installation drawing, required voltage, drive availability, working material, cutter types, annual or batch quantity, destination country and any inspection requirements.
Yes. Distributors and resellers may submit required quantities, voltage versions and destination information for an order-specific quotation.
MOQ, stock availability and delivery schedules depend on the selected configuration and order quantity. Request written confirmation before ordering.
A 12-month warranty and technical assistance are indicated for the spindle motor. Confirm coverage, exclusions and available support for the specific shipment in the supplier’s quotation and sales terms.
Use the Zhong Hua Jiang contact page and provide the desired 220V or 380V variant, application, VFD requirements and purchase quantity so the supplier can review the configuration.
