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ER20 2.2KW Square Air Cooled
110V/220V
10000-24000 RPM
Air cooled
ER20
2.2KW
8.6A
The Zhong Hua Jiang Square ER20 2.2kW Air-Cooled CNC Spindle Motor Kit combines a square-housing spindle motor with a variable frequency drive (VFD) for CNC routing, engraving and suitable light milling. It is designed for CNC equipment manufacturers, machine retrofit companies, professional workshops and spindle motor distributors.
The listed square ER20 spindle is rated at 2.2kW with 110V or 220V variants, a published 10,000–24,000 RPM speed range and 8.6A current. Match the selected motor and VFD to the electrical supply, controller interface, mounting pattern and intended cutting operation.
Request Square ER20 2.2kW VFD Kit Pricing
| Product type | Square ER20 2.2kW air-cooled CNC spindle motor with VFD kit |
| Spindle structure | Square-housing air-cooled spindle; verify mounting-hole drawing for installation |
| Collet | ER20 collet interface |
| Electrical options | 110V / 220V product configurations; specify matching VFD input and motor output ratings |
| Applications | Wood, MDF, acrylic, plastics, signs, PCB engraving and suitable light nonferrous-metal work |
| Trade supply | Machine manufacturers, CNC distributors, OEM integrators and workshops |
For OEM and distributor orders, include the required voltage version, quantity, destination country, CNC controller details and any mounting or packaging requirements in the inquiry.
The video demonstrates air-cooled CNC spindle equipment. Request the model-specific wiring information and motor configuration required for your machine.
Download CNC Router Machine Catalogue 2025 (PDF)
| Specification | Details |
| Model | Square ER20 2.2kW air-cooled CNC spindle motor |
| Motor power | 2.2kW |
| Motor voltage choices | 110V / 220V (order the required version) |
| Published current | 8.6A; verify the selected motor nameplate |
| Published speed range | 10,000–24,000 RPM |
| VFD / rated frequency | VFD control; 400Hz stated in accompanying technical descriptions, verify drive setup and motor nameplate |
| Tool-holding interface | ER20 |
| Cooling | Air cooled; no water pump or circulating cooling-water lines needed |
| Housing | Square body; use the appropriate mounting-hole pattern and support arrangement |
| Dimensions and net weight | Confirm from the square-motor drawing and selected configuration; round-spindle dimensions do not apply |
| Kit composition | 2.2kW spindle + matching VFD; confirm accessories and mounting hardware on the quotation |
A square-bodied spindle does not use the same mounting arrangement as a cylindrical Ø80mm spindle. Obtain a dimensioned drawing and verify the VFD ratings before ordering a replacement or designing a new CNC machine.
Important for machine integration: the component and dimension illustrations above may show a round-spindle configuration. The offered model is a square ER20 spindle. Buyers should rely on the square-motor drawing and written packing list for final mechanical and electrical acceptance.
Request Square Spindle Mounting Drawing
Suitable CNC operations can include wood engraving, profile cutting, signs, furniture components, MDF and plywood processing. Select cutting parameters according to spindle capability, cutter geometry, machine rigidity and dust extraction requirements.
For acrylic and plastics, choose appropriate cutting tools and chip evacuation, and manage heat to reduce melting or surface damage. Spindle speed should match both the material and feed rate.
Selected light-duty nonferrous-metal engraving and milling may be possible with rigid equipment, suitable cutters, secure workholding and appropriate cutting parameters. The spindle is not represented as a heavy-duty metal-removal machine.
Discuss Your CNC Application and Tooling
The square housing provides a different mounting approach from round clamped spindles. Verify the mounting-hole spacing, installation clearance and machine structure before replacement or OEM assembly.
The ER20 interface accommodates appropriately selected ER20 collets and matching cutter shanks. Use the specified collet and nut and check tool engagement before machining.
Rated spindle power is 2.2kW. Actual material-removal capability depends on tool diameter, available torque, feed rate, cooling and the stability of the CNC machine.
A compatible 2.2kW VFD is part of the kit concept. The drive must be matched to the purchased spindle voltage, current and motor frequency and configured before operation.
The target model lists separate 110V and 220V configurations. Confirm the supply and VFD input/output specifications; do not assume a single motor will accept any mains voltage.
The motor uses an air-cooled design that avoids a water reservoir, hoses and water pump. Maintain adequate ventilation and keep cooling passages free of dust.
A GRBL or PLC-based CNC controller may control the VFD if the controller output, drive interface and parameters are compatible. Request wiring details for the actual inverter supplied.
Distributors and equipment integrators can discuss quantities, packing, labeling, accessory selections and spare-parts needs with Zhong Hua Jiang when requesting a quote.
The supplier describes dynamic balancing as part of its spindle-motor manufacturing approach. Tool balance, cutter runout, bearing condition and machine stiffness all influence vibration during high-speed operation.
Bearing construction, winding materials and service life depend on the specific spindle configuration, cooling conditions, operating loads and VFD settings. Request the bearing specification and maintenance guidance for the square model.
| Our Spindle Motor | Other Spindle Motor |
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| Runout of less than 0.005mm | Runout of 0.05mm |
The comparative runout figures shown above are illustrative. For a specified runout tolerance, obtain confirmation of the test point, measurement method and inspection record for the delivered motor.
Aviation and power cables and two wrenches are described among the kit accessories. Confirm the connector, cable length, protective earthing, wiring arrangement and any VFD pre-configuration before installation. Final VFD parameters must match the delivered motor nameplate.
Ask for VFD Wiring and Spindle Inspection Details
This square ER20 spindle kit includes a VFD. The accessory assortment may vary with the selected configuration. In particular, square-housing installation hardware differs from the round clamp design, so confirm the itemized packing list for the final shipment.
| Quantity | Item / configuration |
| 1 | 2.2kW ER20 square air-cooled spindle motor |
| 1 | 2.2kW VFD inverter, electrically compatible with the ordered spindle |
| To confirm | Square-body mounting hardware and fixing provisions; do not assume an Ø80mm circular clamp is supplied |
| 13 listed; confirm | ER20 collets, nominal 1–13mm set; confirm included sizes and quantity |
| 10 listed; confirm | Drill bits, listed as 0.8–3mm with 1/8-inch shank; confirm inclusion |
| 1 listed; confirm | Aviation cable; confirm connector and cable length |
| 1 listed; confirm | Power cable; confirm destination-region suitability |
| 2 listed; confirm | Wrenches; confirm inclusion and specification |
| Mechanical specification | Square-body dimensions and mounting pattern: obtain model-specific drawing |
| Net weight | Confirm square-spindle weight on quotation; round-version weight is not applicable |
An Ø80mm round spindle clamp is not automatically compatible with a square-bodied motor. Confirm the actual square spindle housing dimensions, mounting-hole positions, weight and included installation hardware before ordering.
Confirm Square ER20 Kit Packing and MOQ
Choose a kit according to the motor housing, ER collet interface, rated power, cooling requirements, electrical supply and CNC mounting arrangement. The models below include both round and square configurations.
Huajiang reports that it began making CNC engraving spindle motors in 2000, later expanding into VFD inverters and CNC engraving machines. The Zhong Hua Jiang brand was established in 2018 for the international market.
The company identifies patent number 200730184245.5 in connection with its air-cooled spindle motor range. Buyers needing documentary evidence or particular product certification should request current records for the relevant model and market.
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| Quality Assurance Stable product quality and reliable spindle performance. Strict inspection before shipment. | Patents and Certifications Patented air-cooled spindle motor designs. CNC spindle motor manufacturing know-how. | Additional Brand Value Recognized Zhong Hua Jiang brand value. Trusted by users in global markets. |
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| Reasonable Price Direct factory supply for competitive pricing. High cost-performance ratio for B2B procurement. | Responsive Technical Support Professional technical support Fast response for pre-sales and after-sales questions. | Fast and Reliable Delivery Efficient delivery for standard spindle motor kits. Order tracking and export shipping support. |
For procurement projects, submit your bill of materials and application details to discuss available square ER20 variants, inspection requirements, packaging, lead time, warranty terms and after-sales documentation. The final offer will identify the agreed configuration and quantities.
Request a Wholesale or OEM Spindle VFD Kit Quote
CNC engraving and routing machines, including 3018, 3020, 3040 and 6090 model families, for different work areas and production applications.
Round and square spindle housings, ER collet systems and power ratings for suitable CNC equipment integration.
Limit switches, Z probes, emergency-stop components and related items for appropriate CNC machine designs.
Cable options for connecting motor drives and suitable CNC equipment where correct wiring and interference management are required.
Stepper motor products for machine-axis movement and automation applications.
The image above is part of the supplier’s published documentation. Request copies and verify the named certificate holder, covered models, stated standards and current validity for the product you plan to import or integrate.
This image presents customer feedback published for the wider spindle motor range. To evaluate the square ER20 model, request application-specific references and technical documentation.
The product is a square ER20 2.2kW air-cooled spindle motor with VFD kit. ER20 collets, bits, cables and wrenches may be included depending on the agreed configuration. Request a confirmed itemized packing list before purchase.
This product is a square ER20 spindle. An Ø80mm round spindle uses a different housing and mounting method; verify the square version and its dimensions in your quotation.
The listed power is 2.2kW, with a published operating speed range of 10,000–24,000 RPM. Use the correct VFD parameters and observe the motor manufacturer’s operating limits.
The target product identifies 110V and 220V variants. Confirm the motor nameplate, local mains input and compatible VFD output voltage when selecting a configuration.
The product summary specifies 8.6A. Use the final motor nameplate and compatible VFD manual to set current and protective parameters.
Yes, the offered product is a VFD kit, and the published packing information lists a 2.2kW inverter. Confirm the inverter’s model, supply voltage and configuration before purchase.
Do not assume so. The square-bodied ER20 spindle requires a compatible fixing method. Obtain the mounting-hole drawing and specify any bracket or fasteners needed for your CNC frame.
Request a dimensioned drawing and net weight for the selected square model. Dimensions and weight of an Ø80mm round spindle should not be applied to the square housing.
An ER20 spindle accepts compatible ER20 collets for different tool shank diameters. Select collets and cutting tools within the spindle and tool manufacturer’s approved limits.
A 13-piece ER20 collet assortment covering 1–13mm is described among the available kit accessories. Confirm whether this set is included with the selected square kit and obtain the exact size breakdown.
A kit accessory configuration lists 10 bits, an aviation cable, a power cable and two wrenches. Confirm the included quantities, connectors, lengths and cable specifications on the quotation.
Wood engraving, profiling and MDF routing are suitable application categories when the tool, feed rate, workholding and CNC machine stiffness match the task.
It may be used for routing selected plastics with appropriate tooling and chip removal. Manage heat and cutting parameters to avoid melting and edge damage.
Selected light machining of nonferrous metals may be possible on an adequately rigid machine with suitable tools and operating conditions. Heavy metal removal is not a specified universal capability.
No water pump, reservoir or coolant loop is needed for motor cooling. Proper airflow and clearance around the air-cooling system remain important.
Compatibility depends on the VFD and controller’s available speed commands, interface signals and electrical wiring. Confirm the specific inverter model and the controller configuration before installation.
Confirm whether the supplied inverter has been programmed for the selected spindle before shipment. Check all motor parameters and protective settings before energizing the equipment.
A comparison table illustrates runout below 0.005mm, but the measurement location, method and acceptance conditions must be established for your order. Ask for an inspection report if a verified limit is required.
Zhong Hua Jiang accepts inquiries from distributors, wholesalers, machine manufacturers and CNC equipment integrators. Submit the order quantity, destination and technical configuration for a quotation.
You can discuss voltage selection, electrical matching, kit components, documentation, branding and packaging. Availability and minimum quantities depend on the requested specification.
Minimum order quantities depend on the motor configuration, accessory package and any OEM requests. Ask for written MOQ terms for your quantity and destination market.
Indicative production lead times are 3–7 working days for standard products and 10–20 days for larger or customized orders. Confirm the actual lead time and shipping schedule for your order.
The supplier describes a 12-month warranty and remote technical assistance. Request the written warranty scope, exclusions, claims procedure and available installation support for the quoted kit.
Please provide the quantity, 110V or 220V version, CNC controller and mains supply, mounting-hole requirements, ER20 tool sizes, required kit accessories, destination country and documentation needs.
