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ER32 125mm 7.5KW Round Water Cooled
220V/380V
12000-48000 RPM
51*20*22 cm
27KG
Water Cooled
ER32
7.5KW
15A
Φ125*413mm
The Zhong Hua Jiang ER32 125mm 7.5kW water-cooled CNC spindle motor is a high-frequency, collet-type spindle for professional CNC routing, engraving and compatible machine integration. The published specifications identify a Φ125mm round housing, an ER32 toolholding interface and a 12,000–48,000 RPM speed range.
The spindle is offered with 220V or 380V motor voltage options and a published 800Hz frequency. It requires a separately matched variable frequency drive (VFD) and a functional external water-cooling circuit. Select its electrical, mechanical and tooling configuration according to the actual machine and ordered motor nameplate.
For CNC router manufacturers, distributors, industrial maintenance teams and OEM integrators, this is a motor-only listing. The standard package identifies one 7.5kW round spindle motor; a VFD, pump, chiller, mounting clamp and other accessories should not be assumed to be included.
Request ER32 7.5kW Spindle Pricing
The video and product images provide a visual reference. Confirm the exact spindle variant, electrical connection and ordered accessory scope before purchase.
CNC Router Machine Catalogue 2025.pdf
The ER32 collet system is intended for interchangeable tooling when the selected collet, nut and cutter are properly matched. Tool retention, balance and permissible rotational speed must be confirmed for the complete toolholding assembly, particularly at the top of the spindle’s published speed range.
The manufacturer’s product listing specifies a body size of Φ125 × 413mm and a spindle weight of approximately 27kg. Check the installation drawing, mounting clamp fit, cable clearance, coolant-port orientation and Z-axis load capacity before machine assembly or retrofit.
Applications include wood and MDF routing, acrylic and plastic machining, sign production and selected light-duty work on aluminum or brass. Cutting capability depends on spindle torque at the operating speed, cutter geometry, workholding, chip removal and machine rigidity; rated motor power alone does not establish a material-removal capacity.
The following table retains the product’s published electrical and mechanical figures. The 15A current value is not assigned separately to the 220V and 380V options in the source specification. Verify the actual motor nameplate and the matching VFD output rating for each ordered version.
| Voltage | 220V/380V | 1 pcs 7.5KW Round Spindle Motor. |
| Speed | 12000-48000 | |
| Power | 7.5KW | |
| Electric Current | 15A | |
| Frequency | 800Hz | |
| KG | 27KG | |
| Connection | ER32 | |
| Cooling | Water Cooled | |
| Bearing | Ceramic Balls |
Motor body: Φ125 × 413mm. Net spindle weight: approximately 27kg. The catalogue lists 800Hz and 12,000–48,000 RPM; ensure the VFD supports the required output frequency and that the spindle, bearings, toolholder and cutting tool are approved for the planned speed.
Electrical supply: 220V and 380V are motor-variant designations. They do not indicate that every VFD has the same mains input or that either motor can be connected directly to the AC supply. Check VFD input power, output voltage, output current, grounding and protective settings for the specific configuration.
Confirm Voltage, Current and 800Hz VFD
This 7.5kW CNC router spindle may be evaluated for multiple material types. Final feasibility depends on the assembled machine, fixture, cutter specification, operating speed, chip evacuation and thermal management. Application photographs illustrate typical CNC operations rather than verified cutting tests for this exact spindle.
For CNC woodworking and panel processing, compatible cutters can be used for contour routing, grooving, edge profiling and engraving. Confirm the cutter’s maximum permitted speed and the machine’s stiffness before selecting tool diameter, feed rate and depth of cut.
Acrylic, PVC and related plastics require suitable tool geometry and feed control to minimize melting, heat buildup and poor edge finish. Coolant circulating through the spindle body removes motor heat; it does not replace process-specific chip evacuation or tool cooling.
Soft-metal engraving and light machining may be possible in a rigid CNC machine with suitable workholding and tooling. Verify the available cutting torque at the chosen RPM. Do not assume that a 7.5kW high-frequency spindle is suitable for unrestricted heavy milling of metals.
Discuss Your CNC Material and Application
The ER32 collet interface accepts appropriately sized ER32 collets and compatible nuts. Collet selection depends on the tool shank; cutter diameter and usable speed must follow the rated limits of the complete assembly. An ER32 manual collet system should not be assumed to provide automatic tool changing without separately confirmed hardware.
The stated 7.5kW motor rating can support the design of larger CNC router systems, subject to drive configuration, spindle speed, cutter and machine capacity. Request the motor power/torque curve and operating-duty guidance if low-speed cutting force or continuous loading is critical to the project.
The product lists an 800Hz frequency and a 12,000–48,000 RPM speed range. A suitable high-frequency VFD must be selected with the correct power, voltage, output-current and frequency ratings. A drive limited to 400Hz cannot automatically be assumed to achieve the specified 800Hz operation.
The spindle specification identifies ceramic-ball bearings. Bearing behavior depends on bearing arrangement, lubrication, rotational speed, cutting load, contamination and coolant conditions. Request the exact bearing specification or inspection documents when bearing type, runout or permissible speed is part of the purchasing requirement.
A closed-loop or circulating water-cooling system is required for this water-cooled housing. Specify pump or chiller capacity, hose fittings, coolant conditions and leak protection based on the technical instructions for the actual motor. Do not run the spindle without the specified coolant circulation.
A CNC controller or PLC may control a compatible VFD using the supported command signals and parameter settings. Integration depends on the selected drive and machine controller; the motor itself does not include a built-in VFD or CNC control unit.
Request Spindle Integration Information
Machine builders and purchasing teams can use the following checklist when confirming fit and electrical compatibility.
| Selection item | What to verify |
|---|---|
| Motor voltage | Confirm the actual 220V or 380V motor version, the motor nameplate and the VFD output voltage. |
| Rated current | Confirm the current for the selected voltage; the source lists 15A without a version-specific breakdown. |
| VFD frequency | Check up to 800Hz output capability, VFD ratings, protection settings and control signals. |
| Speed and tooling | Confirm spindle rated speed and maximum safe RPM of the collet, nut, cutter and tool assembly. |
| Spindle fit | Allow for Φ125 × 413mm motor dimensions, 27kg weight, mounting clamp and Z-axis clearance. |
| Cooling equipment | Specify water circulation, coolant connections and operating-flow requirements. |
| Order contents | Verify whether VFD, collets, clamp, cables, pump, hoses and documentation are separately quoted. |
| Purchase details | Provide required quantity, destination, application, inspection requirements and any OEM requests. |
Send Your ER32 7.5kW Purchase Requirements
The original product specification lists one 7.5kW round spindle motor as the standard item. Packaging photographs provide a visual reference. A compatible VFD, pump, water hoses, mounting clamp, collet set and additional wiring are not confirmed in the standard contents and should be specified separately if required.
For multi-unit orders, OEM buyers may discuss packing requirements, documentation, identification labels and accessory configurations during quotation. Supply scope, availability, lead time and shipment terms are determined by the agreed order.
Confirm Spindle Package and Accessories
Review other spindle sizes and integrated VFD-kit listings if your machine requires a different power range, collet interface or supply scope. Confirm the contents of each linked model independently.
Huajiang describes its spindle-motor manufacturing history as beginning in 2000, with later development of variable-frequency drives and CNC machines. The Zhong Hua Jiang brand was established in 2018. Buyers may contact the company about model selection, OEM projects and distributor supply.
The company presents experience in spindle motor production and related CNC machinery. Its cited patent number 200730184245.5 concerns a series of air-cooled spindle motors; it should not be treated as a patent claim for this ER32 water-cooled model.
For equipment integration or distribution, provide required spindle quantities, power supply, target materials, installation drawings, inspection expectations and destination market so the proposed configuration can be discussed.
Contact Zhong Hua Jiang for OEM Supply
For industrial buyers, the purchase discussion should cover configuration confirmation, documentation, inspection requirements, accessory compatibility, technical communication and order-specific delivery arrangements.
 | ||
| Quality and Inspection Request inspection information for the ordered model. | Patents and Documentation Air-cooled spindle patent information; confirm model-specific documents. | Product Range Spindle motors, drives and CNC machine products. |
 | ||
| Factory Supply Discuss volume pricing and order scope. | Technical Communication Confirm configuration and requested support services. | Order Coordination Confirm packing, lead time and shipment terms per order. |
Request an ER32 7.5kW Wholesale Quote
The company lists CNC router machine series including 3018, 3020, 3040 and 6090. Select the spindle according to the actual machine structure, axis loading and drive requirements.
Water-cooled and air-cooled spindle models cover different power ratings, toolholding interfaces and mounting sizes.
Machine builders may require spindle clamps, cooling equipment, probes, limit switches and other accessories appropriate to their installation.
Cabling selection should account for VFD output, shielding, grounding, routing and the motion of the machine axes.
Axis-drive equipment and controllers must be sized for machine movement, rigidity and the additional spindle mass.
The image above is retained as a company document reference. Confirm which certificates, inspection records or declarations apply to the specific ER32 7.5kW motor and destination market before relying on any conformity statement.
Customer feedback photographs are provided for general reference. For machine integration or bulk purchasing, request documentation or application details that relate to the exact spindle version being considered.
It is a 7.5kW round water-cooled high-frequency spindle motor with an ER32 collet interface and a published body diameter of 125mm, intended for suitable CNC router and engraving-machine installations.
The product listing specifies 12,000–48,000 RPM. The permissible operating settings depend on the actual motor configuration, VFD parameters and the safe speed rating of the complete cutting-tool assembly.
The source specification lists 800Hz for this ER32 7.5kW model. Do not use a 400Hz maximum-frequency drive without establishing that its output capability meets the motor requirements.
The published options are 220V and 380V. Specify which motor voltage you require and confirm the VFD output voltage, source supply and motor nameplate before ordering.
The original table shows 15A without assigning it to an individual voltage version. Obtain the rated current for the exact motor nameplate and size the drive and protection accordingly.
No. The high-frequency motor must be connected to a properly rated VFD, with electrical installation and grounding performed according to the motor and drive instructions.
A drive limited to 400Hz cannot be assumed to achieve the published 800Hz operation. Verify the selected VFD maximum output frequency and all motor electrical ratings.
Ask About Spindle and VFD Compatibility
The written standard package lists one 7.5kW round spindle motor. A VFD and external water-cooling equipment are not confirmed as standard inclusions on this motor-only page.
The product listing gives approximately Φ125 × 413mm overall size and 27kg weight. Request a drawing when fit, coolant connections or mounting clearances are critical.
Use a mount suitable for the 125mm spindle housing, the motor mass and the machine’s intended loads. Confirm clamp dimensions and Z-axis clearances for the actual equipment.
ER32 collets hold compatible cutting-tool shanks. Correct collet size, nut, assembly balance and manufacturer-approved tightening are necessary for secure tool retention.
No universal maximum speed follows from the ER32 designation. Verify the specific collet, nut, cutting tool and assembled holder speed ratings before high-speed operation.
The page’s specifications identify an ER32 collet connection but do not document an automatic tool-change actuator or tool-changing interface. Confirm any automatic tool-changing requirement separately.
Circulating coolant removes heat from the spindle housing. An appropriate pump or chiller, suitable hoses and adequate flow are needed; never operate without the specified cooling circulation.
Yes. The published table states ceramic-ball bearings. Exact bearing arrangement, operating limits and inspection requirements should be checked for the ordered motor.
It may be suitable for routing, engraving and trimming wood products in compatible CNC equipment. Select cutter size and machining parameters according to the material and machine.
Discuss Your CNC Spindle Project
It may be used for compatible plastics machining. Cutter geometry, feed, spindle RPM and chip evacuation need to be chosen to manage heat and maintain edge quality.
Light machining may be possible when the CNC frame, workholding, cutters and available torque at speed are appropriate. Rated power alone does not establish suitability for heavy metal milling.
An appropriately configured CNC controller or PLC may send commands to a compatible VFD using the drive’s supported control interfaces. The motor itself does not contain the controller.
The source page refers to a 12-month warranty. Confirm current coverage, exclusions and technical-support arrangements in the supplier quotation or sales terms for your specific order.
Yes. Buyers can submit model configuration, voltage, destination and expected purchase quantities for a quotation. Pricing, MOQ, manufacturing changes and lead time require agreement for the actual order.
Provide motor voltage, available VFD, machine model, mounting layout, operating materials, tools, application, quantity, delivery destination and any required technical documents or tests.
