 |
ER25 125mm 5.5KW Round Water Cooled
220V/380V
12000 RPM
51*20*22 cm
24KG
Water Cooled
ER25
5.5KW
11A
Φ125*403mm
The Zhong Hua Jiang ER25 125mm 5.5kW water-cooled spindle motor is designed for professional CNC router, engraving and machine-building applications. Its published configuration includes an ER25 collet interface, Φ125 × 403mm housing, 12,000 RPM speed specification and ceramic-ball bearing construction.
The product is offered with 220V or 380V motor options and a published 400Hz frequency. The machine builder must select a compatible VFD, cooling arrangement and mounting assembly. This listing is for the spindle motor itself; an inverter, external coolant system and other accessories are not listed as standard contents.
For OEM machine manufacturers, industrial distributors and CNC workshops, the 5.5kW rating, ER25 tooling system and 125mm body are important selection factors. Actual machining capacity depends on cutter geometry, available torque, machine rigidity, material and cutting parameters.
Request a Quote for the ER25 5.5kW Spindle
The product images and video provide visual reference. Match the delivered spindle specification and electrical connections to your machine documentation before installation.
CNC Router Machine Catalogue 2025.pdf
The specifications below describe the published motor configuration. 11A is published without a separate breakdown by voltage; consult the motor nameplate before finalizing the inverter and electrical installation.
| Voltage | 220V/380V | 1 pcs 5.5KW Round Spindle Motor. |
| Speed | 12000 | |
| Power | 5.5KW | |
| Electric Current | 11A | |
| Frequency | 400Hz | |
| KG | 24KG | |
| Connection | ER25 | |
| Cooling | Water Cooled | |
| Bearing | Ceramic Balls |
Overall dimensions: Φ125 × 403mm. Approximate spindle weight: 24kg. Collet system: ER25. Bearing description: ceramic balls. Confirm any dimensional tolerance, spindle connection and product variant before a production order.
Voltage and VFD matching: 220V and 380V are listed as motor options, not as interchangeable supply settings. Select a drive with sufficient rated output power, current and frequency capability, and confirm its output voltage and protection settings against the actual motor nameplate.
Operating speed: the supplier lists 12,000 RPM and 400Hz. This is not evidence of an unrestricted speed range; request the permitted speed/torque information and manufacturer-approved VFD parameters for the ordered spindle.
Confirm Voltage, Current and VFD Selection
This ER25 5.5kW water-cooled spindle is positioned for CNC engraving, routing and controlled milling operations. Suitability must be established using the complete machine, tool, workpiece and cutting process rather than the motor power rating alone.
For CNC woodworking and panel processing, suitable router cutters can be used for shaping, grooving, profiling and engraving. Verify collet size, cutter balance, spindle operating speed and dust extraction for the proposed application.
CNC machining of acrylic and plastics requires cutting conditions that manage frictional heat, chip removal and edge finish. Water circulation cools the spindle motor housing; it does not replace material-specific tool selection or process cooling when needed.
Light machining and engraving of aluminum or brass may be suitable when the machine provides sufficient rigidity and the selected tooling and feed rates match the operation. Confirm available spindle torque, workholding, chip management and cutter limits before choosing a machining process.
Discuss Your CNC Machine Application
The ER25 collet connection accommodates compatible ER25 collets and tool shanks. Use the correct collet/nut combination, verify permissible tool-shank size, and follow approved clamping procedures. The ER25 designation identifies a collet system; automatic tool-changing capability must be verified separately.
The product specification identifies ceramic-ball bearings. Actual spindle life, vibration and machining accuracy depend on the exact bearing arrangement, cutting loads, tool balance, coolant conditions, contamination and maintenance. Obtain inspection criteria if these are purchase-critical.
The published 5.5kW power class and 12,000 RPM speed support evaluation for professional CNC machines. The appropriate tool diameter, cutting speed and load limit depend on the machine design and spindle performance data; no universal heavy-cutting capacity should be assumed.
The spindle requires a properly rated high-frequency VFD. A CNC controller or PLC can operate the VFD only through compatible control inputs or communication interfaces. Confirm wiring, grounding, rated current, speed commands and VFD parameters with the actual equipment documentation.
The Φ125mm housing is intended for installation in a matching mounting assembly. An external water pump, appropriate hoses and a reliable circulation loop must be specified for spindle operation. Check coolant flow, leakage protection and hose clearance before running the motor.
Machine builders should account for the stated 403mm overall length, 24kg mass, spindle clamp position, tool overhang and Z-axis acceleration. Verify clearance for cables and cooling fittings, including access for inspection and maintenance.
Request OEM Spindle Integration Information
The published package list includes one 5.5kW round spindle motor. Additional equipment such as a matching VFD, water pump, tubing, reservoir/chiller, spindle mount, ER25 collets and wiring must be confirmed in the sales quotation; they should not be assumed to be included with this motor-only item.
For shipping and receiving, confirm the spindle version, agreed accessory list, protective packaging, motor nameplate and acceptance documents. The photographs illustrate packaging and do not replace the written delivery list.
Confirm Standard Package and Required Accessories
When replacing an existing spindle or specifying an OEM CNC machine, use the following points to align the spindle with your electrical, mechanical and production requirements.
| Selection item | Information to confirm |
| Motor electrical rating | 5.5kW; select the 220V or 380V motor version; confirm nameplate current and electrical connections. |
| VFD / inverter | Compatible output voltage and current with the manufacturer-required 400Hz capability and approved drive settings. |
| Motor operating speed | Published 12,000 RPM; verify permitted operating range and available torque with the supplier. |
| Toolholding | ER25 collet/nut configuration, tool-shank sizes, cutter balance and tool-changing method if required. |
| Mechanical mounting | Φ125mm spindle clamp, 403mm housing length, 24kg spindle weight and Z-axis payload allowance. |
| Cooling circuit | External coolant pump, hoses, reservoir or chiller, safe connections and specified circulation flow. |
| Purchase configuration | Exact supplied components, inspection documentation, quantity, packaging, commercial terms and delivery schedule. |
Request Spindle Drawings and Bulk Pricing
Compare these separately listed spindle motors and VFD kits for different power and tooling requirements. Check the linked product configuration before choosing a replacement or a new CNC spindle assembly.
Huajiang describes its origins in CNC engraving spindle production in 2000 and the introduction of the Zhong Hua Jiang brand in 2018. The company also offers VFDs, CNC machines and related components for machine builders and distributors.
The company publishes information about manufacturing experience and a registered patent for its air-cooled spindle motor series (No. 200730184245.5). This company-level patent information does not automatically establish a certification or patent for every water-cooled spindle model.
Purchasing teams can request applicable dimensional drawings, VFD recommendations, model-specific inspection information and commercial terms for the chosen ER25 5.5kW motor.
For industrial distributors and OEM buyers, a useful supplier quotation should identify the exact voltage version, technical documentation, compatibility review, order quantities and after-sales terms.
 | ||
Quality AssuranceProduct configuration review Ask for model-specific inspection records | Technical History and PatentsAir-cooled spindle patent history and technical documents | Additional Brand ValueBrand value highly recognized product series |
 | ||
Direct Manufacturer PurchasingDirect factory sales Request quantity-based quotation | Technical SupportProfessional technical support Order-specific technical consultation | Fast and Reliable DeliveryLead time confirmed by quotation Shipment updates where arranged |
Before placing a commercial order, confirm technical acceptance conditions, delivery timing, any applicable certification documents and warranty coverage in writing. The displayed company material is general supplier information.
CNC router machines, including the 3018, 3020, 3040 and 6090 series, require model-specific spindle mounting and machine capacity checks.
Air-cooled and water-cooled spindle motors are available in different power ratings, housing dimensions and toolholding interfaces.
Spindle clamps, cooling equipment, measurement probes, limit switches and other accessories should be matched to the machine.
Shielded cables and drag-chain wiring are evaluated according to VFD noise control, routing requirements and installation conditions.
Stepper motors and matching drives support CNC machine axis motion and must be selected for the specific load and controller.
The illustration presents company documentation. For regulated purchases, request copies and verify which standards or certifications apply to the exact ER25 5.5kW product version and destination market.
Product feedback and workshop images are presented as general references. For a procurement project, request samples of relevant inspection records and confirm configuration-specific acceptance criteria.
Contact Us for ER25 Spindle Documentation
This motor is intended for professional CNC routing, engraving and suitably configured milling applications. Common workpieces include wood, MDF, acrylic and other plastics. Light metal applications require appropriate machine rigidity, tooling and cutting parameters.
The specified model is listed with 5.5kW power, a Φ125 × 403mm body, ER25 collet connection, 220V/380V versions, 400Hz, 12,000 RPM, 11A listed current, ceramic-ball bearings and approximately 24kg weight.
The published package specifies one 5.5kW round spindle motor. It does not state that a VFD, pump, cooling hose, clamp or ER25 collet assortment is included. Confirm additional accessories on the quotation.
ER25 identifies the collet interface. Compatible ER25 collets hold suitable cutter shanks; exact size, tool balance, nut compatibility and approved operating speed must be verified.
No. ER25 describes a collet system. Automatic tool changing requires an appropriate spindle mechanism and machine equipment. Ask for details of the tool release mechanism, control interface and compatible CNC machine system before specifying an automatic tool change.
Yes. The spindle is listed for 400Hz operation and requires a correctly rated VFD with matching output voltage, current capability and manufacturer-approved settings.
Do not assume the two voltage variants use the same output configuration. Match the actual motor nameplate to the inverter output and confirm the drive input supply separately.
Ask About ER25 Spindle Compatibility
The published specifications list 11A but does not distinguish the 220V and 380V variants. Obtain the nameplate current for the ordered model before electrical design or VFD sizing.
The published speed is 12,000 RPM. This is a stated speed, not a verified continuous operating range. Ask for approved minimum and maximum speed limits if variable-speed use is planned.
No. Use an appropriately rated VFD and the specified protective earthing, drive wiring and motor settings. Installation should follow the supplier and machine documentation.
A compatible CNC controller or PLC can issue commands through the selected VFD when supported by the drive interface. Check control inputs, wiring and parameter settings; the spindle motor alone is not a CNC controller.
Circulating coolant removes heat from the spindle housing. Stable cooling depends on a correctly sized pump or chiller, suitable hoses and dependable coolant flow; operating noise is influenced by the full machine and cooling system.
A pump is not identified in the published package list. Confirm pump, reservoir, hose and cooling specifications as separate line items if needed.
The page describes ceramic-ball bearings. Request exact bearing details, service instructions or inspection documentation if bearing configuration is a critical purchasing requirement.
Ask About ER25 Spindle Compatibility
Use an appropriately sized clamp for the Φ125mm spindle housing, with sufficient machine rigidity and Z-axis carrying capacity. The motor is approximately 24kg and 403mm long.
Confirm the mounting diameter, overall length, weight, collet system, controller-to-VFD interface, motor voltage and water-cooling connections before replacing an existing spindle.
Light engraving or machining may be feasible with an adequately rigid CNC machine, suitable tools, safe cutting parameters and proper chip removal. The 5.5kW rating alone does not guarantee heavy metal-cutting capability.
Machine builders can submit electrical, mounting, toolholding, packaging and documentation requirements for review. Available customization and minimum quantities must be confirmed for the requested configuration.
Specify the intended market, quantity, voltage variant, required accessories, installation application, inspection requirements, branding needs and destination country for an accurate quotation.
The page refers to sample orders and bulk purchasing but does not provide fixed MOQ or model-specific availability. Ask for written quantity, sample, pricing and lead-time terms.
The source page states a 12-month warranty with technical support. Confirm the covered components, exclusions, claim process and applicable commercial terms for the order.
Contact Zhong Hua Jiang with the ER25 125mm 5.5kW model, required voltage, planned VFD, machine application and order quantity to request drawings and a formal quotation.
