ER32 6KW Square Air Cooled
380V
10000-18000 RPM
15.3kg
Air Cooled
ER32
6KW
12A
430X122X110mm
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The ER32 6kW square air-cooled CNC spindle motor is designed for professional CNC routing, woodworking, engraving and compatible light milling applications. The product listing identifies a 380V, 300Hz square-body spindle for CNC equipment builders, distributors and industrial maintenance teams.
Published specifications include 6kW output, an ER32 collet interface, 10,000–18,000 RPM, 12A and a motor weight of 15.3kg. A suitable VFD must be selected separately according to the actual motor nameplate and electrical installation.
Request ER32 6kW Spindle Pricing


The video and images illustrate the manufacturer’s air-cooled spindle product range. For the exact 6kW configuration, request the motor label, mounting drawing and electrical connection information.
CNC Router Machine Catalogue 2025.pdf
This 6kW ER32 CNC spindle motor is intended for CNC router manufacturers, production workshops, machinery repair companies and wholesalers sourcing a higher-power square-body spindle. The ER32 interface supports compatible tooling when the correct collet size and cutter shank are selected.
Typical application materials include wood, MDF, plywood, acrylic, PVC and machinable plastics. Selected machining operations on aluminum and brass may also be feasible on appropriately rigid machines with suitable tool geometry, chip evacuation, feed and speed settings.
Compared with a water-cooled spindle, the air-cooled body eliminates a separate coolant pump, tank and water circuit. Airflow and dust management remain important. The item is a motor-only listing; a VFD is required but is not included in its published standard package.
Ask for Distributor or OEM Spindle Details
The following specifications summarize the published 380V ER32 6kW square spindle. Overall dimensions are taken from the main product attribute panel; electrical ratings and mounting details should be checked against the ordered motor.
| Product model | Zhong Hua Jiang ER32 6kW Square Air-Cooled CNC Spindle Motor |
| Motor output power | 6kW |
| Electrical voltage | 380V motor version |
| Rated current (published) | 12A |
| Working frequency (published) | 300Hz |
| Speed range (published) | 10,000–18,000 RPM |
| Tool-holding system | ER32 collet |
| Cooling method | Air-cooled |
| Housing | Square motor body |
| Overall dimension (product listing) | 430 × 122 × 110mm (verify approved mounting drawing) |
| Motor weight (published) | 15.3kg |
| Recommended VFD | External inverter matching the 380V/6kW/12A/300Hz motor nameplate; not included in the listed package |
| Published package contents | One 6kW square spindle motor; ER32-6/12.7mm collet specification; two wrenches; confirm exact collet quantity and selected size |

Voltage | 380V | 1 pcs 6KW Square Spindle Motor. |
Speed | 10,000–18,000 RPM | Collet: ER32-6/12.7mm and 2 pcs wrenches for quick installation. |
Power | 6KW | This spindle should be equipped with 300Hz VFD. |
Electric Current | 12A | |
Frequency | 300Hz | |
KG | 15.3KG | |
Connection | ER32 | |
Cooling | Air Cooled | |
Usage | Engraving Machines |

The product attribute panel lists 430 × 122 × 110mm. Other source copy mentions a 380mm length. Before CNC retrofitting, verify the approved dimension drawing, bolt-hole locations, mounting plane, cable outlet, ventilation clearance and Z-axis load capacity.
Request the 6kW Spindle Dimension Drawing
Application performance depends on spindle speed, cutting tools, material, chip load, machine rigidity and the workholding setup. The images below show representative types of CNC machining, not a guarantee for every cutting operation.
The spindle can be considered for woodworking CNC routers, panel processing and engraving machines. Select an appropriate ER32 collet, cutter diameter, feed rate and depth of cut for the equipment.
For acrylic, PVC and plastic sheet routing, use suitable cutters and chip evacuation to control heat buildup and maintain edge quality.
Light milling and engraving of compatible soft metals may require more rigid workholding, controlled feed rates and additional chip management. Confirm application suitability before production use.
Discuss Your CNC Router Application
An ER32 collet interface is suitable for compatible CNC cutters. The shank sizes actually held depend on the specific collets, not on the ER32 interface alone.
The rated 6kW output supports selection for production-oriented CNC routing machines where the frame, axis load capacity and cutter parameters are appropriate.
The published model is rated at 380V and 12A. Specify your power supply and motor requirements before choosing the VFD; do not assume that a 220V variant is included in this listing.
The published 300Hz and 10,000–18,000 RPM values require appropriate VFD parameterization and adherence to the motor nameplate. A spindle motor does not independently provide CNC/PLC speed control.
The square housing can be incorporated into compatible mounting designs. Check the installation hole pattern and overall body clearance against the machine.
The motor uses air cooling, avoiding an external water pump and coolant hoses. Preserve adequate air circulation and manage dust accumulation.
The product title describes four bearings. For precision-sensitive orders, confirm the bearing construction and specified inspection procedure for the selected model.
Depending on the chosen inverter, start/stop and speed control can be integrated with a compatible CNC controller or PLC. Verify signal interfaces and electrical protection before commissioning.
Request 6kW ER32 Electrical and Mounting Details
Some images in the wider product range depict 400Hz or 24,000 RPM versions. The published specification of this 6kW ER32 listing is 300Hz and 10,000–18,000 RPM. Confirm applicable limits on the supplied nameplate.

Spindle balance, bearing selection and motor cooling affect vibration and machining finish. The published product lists a four-bearing design; confirm the exact bearing material and performance requirements for the ordered configuration.

The original material includes examples of 0.005mm runout, while other descriptions mention 0.01mm. The comparison images are illustrative. For a guaranteed acceptance requirement, request a documented tolerance with measurement point, collet/tool setup and test conditions.
| Our Spindle Motor | Other Spindle Motor |
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| Illustrative result: <0.005mm; confirm measurement conditions | Illustrative reference: 0.05mm |

A qualified technician should confirm grounding, electrical connections, inverter output, spindle rotation, acceleration settings and mechanical clearance. Do not exceed the confirmed motor speed or drive ratings.
The original package list identifies one 6kW square spindle motor, an ER32-6/12.7mm collet specification and two wrenches. Confirm whether 6mm and 12.7mm refer to alternative supplied collet sizes or separate items before placing a bulk order.
| 1x | 1 pcs 6KW Square Air Cooled Spindle Motor. |
| 1x | Collet: ER32-6/12.7mm and 2 pcs wrenches for quick installation. |
This Air Cooled Spindle Motor should be equipped with 300Hz VFD. |
External VFD: A compatible 300Hz inverter is required for spindle operation. It is not identified as a component included in this motor-only package. Discuss VFD, cabling and collet requirements separately in the quotation.
Request Confirmed Package Contents and Price
Compare other ER11, ER20, ER25 and ER32 spindle models by output power, tool-holding interface, housing dimensions and electrical requirements. Select a motor by machine compatibility rather than power rating alone.
Round Air Cooled Spindle Motor Kits
Square Air Cooled Spindle Motor Kits
Zhong Hua Jiang produces CNC spindle motors and related CNC equipment. The original company introduction states that manufacturing began in 2000 and that the Zhong Hua Jiang brand was introduced in 2018. For production equipment and distributor purchasing, request up-to-date documentation for the selected model.

Company background: Huajiang began producing CNC spindle motors in 2000 and expanded into variable-frequency drives and engraving machines. The Zhong Hua Jiang brand was established in 2018.
Manufacturing and product range: The company supplies air-cooled and water-cooled CNC spindle motors and related machine components. The original company information also lists patent No. 200730184245.5 for its air-cooling spindle series.

Contact Zhong Hua Jiang for OEM Purchasing
For machinery builders and distributors, compare motor configurations, technical documents, supply arrangements and service terms before procurement. The following images show the manufacturer’s general product and service information.
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Quality AssuranceSuperior quality performance Strict quality control | Patents and CertificationsSeveral patents for air-cooled spindle motors | Additional Brand ValueBrand value highly recognized by the market |
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Reasonable PriceDirect factory sales Highly cost performance | Full Time ServiceProfessional technical support Close and quick customer service | Fast and Reliable DeliveryFast and efficient delivery Real-time tracking and updates |
CNC router model families including the 3018, 3020, 3040 and 6090 for engraving, cutting and routing applications.
Air-cooled and water-cooled CNC spindle motors offered in different output powers, collet interfaces and body designs.
Related components such as limit switches, Z probes and emergency-stop equipment for compatible CNC machines.
Electrical and signal cables used in CNC machine installations, with specifications selected for the individual application.
Stepper motors for controlled axes in CNC routers and suitable automation machines.
Company-level certification images do not establish that every model has the same approval. For compliance-sensitive projects, confirm the relevant certificate scope, electrical variant, jurisdiction and required technical reports before purchase.


It is intended for compatible CNC routers, engraving machines and suitable milling applications that require a 6kW square-body spindle and ER32 tooling.
It is a spindle motor listing. A matching external VFD is needed for operation but is not listed in the standard contents of this motor-only package.
The published version is 380V. Confirm the exact motor nameplate and power supply configuration before ordering or programming a VFD.
The published model lists 12A. Use the current printed on the supplied motor nameplate when selecting the VFD and protection devices.
The listing specifies 10,000–18,000 RPM and 300Hz. The motor must be operated within the limits confirmed for the supplied version.
Choose an inverter compatible with the motor’s 380V rating, 6kW output, 12A current and 300Hz specification, together with your available power supply and CNC controller interface.
No VFD appears in the published standard motor package. Ask for a separate inverter quotation if a combined solution is needed.
The spindle uses an ER32 collet interface. Select an ER32 collet that matches the actual shank diameter of your cutting tool.
The original listing states ER32-6/12.7mm but does not clearly identify the exact number of each size. Confirm the packing configuration for your order.
The main product panel lists 430 × 122 × 110mm. Request a dimensioned mounting drawing; a shorter length appears elsewhere in the original description.
The published spindle weight is 15.3kg. Check the packed gross weight separately for shipping and machine-load calculations.
Potentially, provided the machine accommodates the motor dimensions and weight and has compatible mounting hardware, electrical power, inverter controls and ventilation.
The product name describes a four-bearing spindle, while the original detail discusses steel bearings. Confirm the exact bearing design in the technical quotation.
The original sales material contains different runout examples. For precision purchasing, specify the measurement position, collet, tool setup and required acceptance tolerance.
These are among the described woodworking applications. Choose cutters and operating parameters suited to the material, machine rigidity and desired finish.
Suitable engraving or light milling may be possible on compatible soft metals when cutter geometry, chip management, feed, speed and machine stiffness are appropriate.
No separate water-cooling system is necessary. Keep cooling passages clear, maintain ventilation and perform maintenance according to the motor and drive instructions.
Control depends on the selected VFD and the controller’s available start/stop and speed-command interfaces. Confirm wiring and configuration before installation.
The standard list includes one 6kW square air-cooled spindle motor, a stated ER32-6/12.7mm collet specification and two wrenches. Verify the exact accessory quantities in the quotation.
The product information describes VFD matching as an option to discuss. Provide the destination electrical supply and controller requirements when requesting a combined quotation.
The product page invites discussions about OEM and machine-building needs. Provide your branding, voltage, cabling and mounting requirements for a feasibility assessment.
The original listing mentions trial orders and bulk purchases but does not establish a fixed MOQ. Request the quantity terms for your selected configuration.
The original page gives 3–7 working days for standard units and 10–20 days for custom or bulk orders. Obtain a confirmed production and dispatch schedule before placing an order.
The original listing mentions a 12-month warranty and technical support for electrical installation and VFD setup. Confirm applicable terms in the sales agreement.
Provide machine type, required quantity, 380V power arrangement, tool-shank sizes, mounting drawing, VFD/controller specifications and destination market.
Use the Zhong Hua Jiang contact form with the required quantity, shipping destination, electrical specification and any mounting or tooling needs.
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