ER11 1.5KW 110V/220V Square Air Cooled Spindle Motor Kit With VFD Kit for CNC Router Engraving Machine

ER11 1.5kW Square Air-Cooled Spindle Motor Kit with VFD

The Zhong Hua Jiang ER11 1.5kW square air-cooled CNC spindle motor VFD kit combines a high-speed spindle with a variable frequency drive solution for CNC engraving, routing and light-duty milling. It is intended for machine builders, workshops, equipment distributors and buyers looking to source compatible spindle-drive components together.

The published motor specifications include 1.5kW rated power, 10,000–24,000 RPM, 400Hz, 8A, an ER11 collet interface and an approximately 3.6kg square spindle body. A 110V or 220V version can be selected according to the motor and VFD configuration. Confirm the actual input-voltage version, inverter model and supplied accessories before purchase.

Air cooling removes the need for a separate water pump and coolant loop. The square housing has side-mounting provisions, which can suit compatible CNC Z-axis assemblies after checking dimensions, mass and mounting-hole locations.

Request 1.5kW Square Spindle VFD Kit Pricing

CNC Spindle Motor Video

Zhong Hua Jiang CNC Catalogue (PDF Download)

CNC Router Machine Catalogue 2025 (PDF)

1.5kW ER11 Square Air-Cooled CNC Spindle VFD Kit Overview

This spindle and inverter combination is designed for variable-speed CNC operation. The ER11 tool-holding system is suited to appropriately sized engraving and milling tools, while the VFD regulates spindle speed after correct electrical connection and parameter setup.

Typical applications include engraving and routing in wood, MDF, acrylic, PVC and other suitable plastics, as well as controlled light passes in aluminum or brass where the CNC machine, tool and workholding arrangement permit. Material suitability depends on cutting parameters and machine rigidity; this is not a universal heavy-metal cutting spindle.

Buyers can request a kit with its matched VFD, ER11 tooling accessories and connection cables. The specific inverter model and every included component should be shown on the final quotation and packing list.

Ask for the 1.5kW Spindle and VFD Configuration

Technical Specifications of the ER11 1.5kW Square Spindle

The source product information describes a square spindle body of approximately 94 × 77mm, 242mm length and 3.6kg weight. Verify the mounting hole positions and clearance against the installation drawing before machining an adapter plate or ordering replacement parts.

Applications and CNC Router Use Cases

Woodworking, MDF and CNC Engraving

For signs, decorative engraving, relief work and routing in wood-based boards, select suitable ER11 cutting tools and match feed rate, spindle speed and depth of cut to the machine and the workpiece.

Acrylic, PVC and Plastic Routing

The 1.5kW ER11 square spindle may be used with appropriate cutters for lettering, contours and decorative features in acrylic and other machinable plastics. Tool geometry, feed rate and chip evacuation are important to avoid rubbing and heat buildup.

Light Milling and Engraving of Soft Metals

Light passes in aluminum, brass and similar non-ferrous materials depend on the rigidity of the CNC frame, the selected cutting tool and proper workholding. Request application advice before specifying this kit for metal production.

Discuss CNC Materials and Spindle Suitability

Features of the 1.5kW Air-Cooled Spindle and VFD Kit

This product brings together a square air-cooled motor and variable-speed control for CNC equipment builders and replacement-spindle projects. Its suitability depends on matching the motor nameplate, VFD output, control signals and machine mounting arrangement.

Main Spindle and Drive Features

Variable-Speed Control with a Matched VFD

A correctly configured VFD can regulate spindle speed within the published 10,000–24,000 RPM range. Buyers should confirm inverter voltage, rated power, output current, frequency capability, motor wiring and any speed-control terminals.

ER11 Precision Tool Holding

The ER11 collet system accepts compatible ER11 collets sized to the actual cutting-tool shank. Use the correct collet and tightening procedure to support accurate tool holding; request verified runout measurements if a specific tolerance is required.

GRBL, CNC Controller and PLC Integration

GRBL-based or PLC-controlled CNC systems may control a compatible VFD through supported start/stop and speed-reference signals. Check controller outputs, required interface modules, grounding and VFD parameters. Connection is not automatically plug-and-play for every controller.

Electrical Configuration for 110V or 220V Markets

The product is offered with 110V/220V configuration options. Confirm the actual input supply, phase, spindle motor voltage and supplied VFD rating for each order. The listed 8A is a published motor figure, not a universal mains-input current rating.

10,000–24,000 RPM Spindle Speed Range

Speed selection depends on tool diameter, material, load and the spindle cooling conditions. Use manufacturer-approved drive limits and avoid assuming that the full speed range is suitable for every operation or continuous load.

Square Housing with Air Cooling

The square housing provides a practical mounting form for compatible CNC machines. Air cooling avoids an external coolant circuit, but the airflow, installation clearance and workshop dust conditions still require attention.

Square Air-Cooled CNC Spindle Motor Advantages

Dynamic Balancing for Smoother CNC Operation

The source product description highlights dynamic balancing as a way to manage vibration and operating noise. Actual vibration levels depend on the spindle condition, selected tools, machine installation and speed.

Four-Bearing Construction and Motor Durability

The product description identifies a four-bearing design and copper winding features. Bearing service life depends on machining loads, dust exposure, cooling, maintenance and operating time; it should not be treated as a fixed number of years.

Runout and Tool Concentricity

Promotional comparison materials show runout figures below 0.005mm, while another product paragraph quotes below 0.01mm. For precision procurement, request a model-specific test result with the measurement location, tool-holder setup and test conditions specified.

Illustrated Zhong Hua Jiang spindle	Illustrative comparison spindle
Promotional figure: runout below 0.005mm; request test evidence	Comparative promotional figure: 0.05mm; result not a controlled cross-model guarantee

Pre-Soldered Aviation Cable and Mounting

The published package details list a pre-soldered aviation wire, and product information describes mounting holes on the square housing. The motor must be secured on a compatible machine mount and correctly wired to the selected VFD by a qualified installer.

Request Drawings and Runout Verification

1.5kW Square Spindle Motor VFD Kit Package Details

The website describes this as a spindle motor kit with VFD. Its brief original packing table, however, names only the spindle motor and aviation wire. The product overview also mentions the inverter, ER11 collets, drill bits, power wire and wrenches. To avoid confusion between package variants, have the supplier confirm the exact configuration on the quotation and packing list.

Package photographs show shipping and presentation examples rather than a guarantee of every accessory. Confirm whether a mounting plate or adapter, power plug and VFD interface hardware are included, as these may differ by configuration.

Confirm Complete Kit Contents and MOQ

Related Air-Cooled CNC Spindle Motors and Kits

Zhong Hua Jiang also offers round and square spindle options at different power ratings. Review tool-holder type, housing geometry, motor weight and VFD requirements before substituting a different model.

ER11 0.8kW Round Air-Cooled Spindle Motor

ER11 1.5kW 65mm Round Air-Cooled Spindle Motor

ER20 2.2kW Air-Cooled Spindle Motor

ER20 3kW Air-Cooled Spindle Motor

ER20 2.2kW Square Air-Cooled Spindle Motor

ER20 3kW Square Air-Cooled Spindle Motor

ER25 4kW Square Air-Cooled Spindle Motor

ER32 5kW Square Air-Cooled Spindle Motor

ER32 6kW Square Air-Cooled Spindle Motor

ER32 7.5kW Square Air-Cooled Spindle Motor

Round Air-Cooled Spindle Motor Kits

Square Air-Cooled Spindle Motor Kits

Zhong Hua Jiang Company Profile

CNC Spindle Motor Manufacturer Since 2000

Company Background

Huajiang states that it began CNC engraving spindle motor manufacturing in 2000 and later expanded into variable frequency drives and engraving machines. The Zhong Hua Jiang brand was introduced in 2018 to support international markets.

Air-Cooled Spindle Development

The manufacturer identifies Chinese patent number 200730184245.5 in its public company information and reports export experience serving overseas buyers. Request relevant patent records, model-specific specifications and business documentation where required for supplier qualification.

For distributors and OEM machine builders, product selection support can include motor geometry, voltage configuration, inverter matching, accessory selection and packing requirements.

Why Buy from Zhong Hua Jiang?

Quality Control Discuss production inspection, motor ratings and available test records.	Patents and Documents Ask for applicable patents and certification documents for the selected product.	Brand and Product Range CNC spindles, VFD products and associated machinery.
Factory-Direct Enquiries Request quotation terms for standard and volume purchases.	Technical Support Discuss VFD parameter setup, installation and troubleshooting.	Export Coordination Confirm production schedule, packing, shipment and tracking by order.

Contact the Manufacturer about a Distributor Order

Additional CNC Products and Accessories

CNC Router Machines

Browse machines in the 3018, 3020, 3040 and 6090 series. Verify axes, frame rigidity, travel, workholding and spindle compatibility before specifying a machine.

CNC Spindle Motors

Compare square and round air-cooled and water-cooled spindles by power, tool-holder interface, housing dimensions and cooling requirements.

CNC Accessories

Ask about limit switches, Z-axis probes, emergency stop components and other hardware suitable for the CNC control architecture.

Electrical Wires and Shielded Cables

Choose wiring for the motor supply and control system according to voltage, current, cable routing, shielding and grounding requirements.

Stepper Motors

Match stepper motor frame size, torque, electrical requirements and drive compatibility to the intended machine motion system.

Product Certification and Supporting Documents

Product and company documentation displayed above is provided for reference. For import, resale or equipment integration, request copies applicable to the exact supplied spindle and VFD versions, including any required test reports, electrical documentation and market-specific compliance evidence.

Customer Feedback and Project References

Feedback and project references may relate to different Zhong Hua Jiang spindle models. For an equivalent application, discuss tool size, operating conditions and machine configuration with the technical team.

Frequently Asked Questions About the 1.5kW ER11 VFD Kit

What is included in the ER11 1.5kW square spindle VFD kit?

The product is advertised as a spindle kit with VFD. Its published text also mentions ER11 collets, drill bits, an aviation wire, power wire and wrenches, but the brief packing table confirms only the spindle and aviation wire. Ask for an itemized quotation listing the inverter model, each accessory and quantity.

Does this kit include a VFD inverter?

The product name and overview describe a kit with a matching VFD. Because the original packing table omits a separately itemized inverter, confirm that the quoted package includes the VFD, and verify the input voltage, output current and rated frequency before ordering.

What is the rated power and speed of this CNC spindle?

The published motor power is 1.5kW, with a listed spindle speed range of 10,000–24,000 RPM. Set VFD speed and frequency limits according to the motor nameplate, machine limits and application.

Does the 1.5kW air-cooled spindle need a 400Hz VFD?

Yes. The published motor specification is 400Hz. Use a compatible inverter rated for the spindle output voltage, power and current. Do not power the motor directly from a 50Hz or 60Hz mains socket.

Can I choose a 110V or 220V spindle motor and VFD kit?

The product listing identifies 110V and 220V options. Specify the local supply and verify the matched motor and VFD version in the pro forma invoice. This does not mean that every individual inverter automatically accepts both supply voltages.

Is the spindle ER11 or ER16?

This specific square 1.5kW kit is listed as ER11. Check the actual spindle engraving and included collet sizes on the order confirmation if a specific tool-shank diameter is required.

What is the weight and size of the square spindle motor?

The listing gives approximately 3.6kg and the body description reports about 94 × 77mm with a length of 242mm. Verify a dimensioned mounting drawing before installation. Kit shipping weight, including the inverter and packaging, is different.

Can this 1.5kW CNC spindle cut aluminum or brass?

Light milling or engraving in suitable non-ferrous metals may be possible with an appropriate machine, tools and cutting parameters. Material removal capacity depends on machine rigidity, workholding, tool diameter and process conditions.

Is the spindle suitable for wood, MDF, acrylic and PVC?

These are typical CNC routing and engraving applications. Select the correct cutter and settings to control chip formation, spindle load and heat.

Does the square spindle require water cooling?

No. The spindle uses air cooling and does not need a water pump or water hose for cooling. Keep airflow passages clear and follow the approved duty and installation guidance.

Will this spindle VFD kit work with a GRBL CNC controller?

Possible integration depends on the controller and inverter signal interfaces, such as a supported run/stop command and speed reference. Additional interface hardware or parameter adjustments may be required.

Can I replace a round spindle with this square spindle?

Only after checking mounting-hole locations, square-housing clearance, Z-axis load, tool position, motor wiring and the selected VFD. A round spindle clamp is not automatically suitable for a square housing.

How accurate is the ER11 spindle runout?

Promotional material mentions figures below 0.005mm and below 0.01mm in different places. Ask for a model-specific measurement method and inspection report when an exact tolerance must be met.

Do you accept distributor or wholesale orders?

Zhong Hua Jiang states that it serves distributors, resellers and wholesalers. Submit your target market, voltage version, quantity and packaging requirements for a commercial quotation.

Can I request OEM or customized spindle configurations?

The manufacturer describes OEM and ODM services covering items such as branding, packaging and technical configurations. Discuss feasibility, engineering specifications and order quantity before placing a custom order.

What is the minimum order quantity for this spindle VFD kit?

The source states that small trial orders can be discussed for standard kits, while customized kit quantities depend on project requirements. Confirm the accepted quantity for the selected version with the sales team.

What are the production lead times and warranty terms?

The manufacturer lists indicative lead times of 3–7 working days for standard kits after payment and 10–20 days for large or customized orders. The original text states a 12-month warranty. Delivery timing, warranty coverage and replacement procedures should be confirmed in writing for each order.

What information should I send for a technical quotation?

Provide the destination country, required 110V or 220V supply, spindle and VFD quantity, tool-shank sizes, controller type, mounting drawing if available, and the intended materials and operations. This helps the team prepare a compatible configuration.

Request a Quote for the Complete ER11 1.5kW VFD Kit