VFD Spindles for CNC Engraving and Milling

Haozhi supplies each VFD spindle as an AC spindle motor specified together with its variable frequency drive. You define speed, power, cooling, interface and tool holding, and we build the spindle and drive pair to that configuration. Haozhi is a spindle manufacturer serving machine builders, retrofitters and integrators, so the spindle and drive are matched to your machine before they ship.

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Products

Turning Spindles Grinding Spindles Milling Spindles Engraving and Milling Spindles Dental Milling Spindles Mechanical Spindles PCB Spindles Semiconductor Machining Spindles Ultra-Precision Finishing Spindles Ultrasonic Machining Spindles Woodworking Spindles Air Cooled Spindles ATC Spindles High-Speed Spindles VFD Spindles Machining Spindles 5-Axis DD Rotary Table 4-Axis DD Rotary Table Direct Drive Tool Grinding 4-Axis Rotary Table Milling Head LM Guide and Ball Screw Tool Holder Precision Collets Air Compressor Automation Fixtures Compact Shaft Cooling Spindles Linear Slides

metallic CNC spindle with HAOZHI branding

Spindle and VFD as a Matched Set

A VFD driven spindle runs at the speed the drive commands, so motor and drive must agree on voltage, rated frequency and motor characteristics. We settle that match at specification stage, so you don't have to reconcile it on the machine.

Motor side

Haozhi develops and makes motors, rotors, stators, clamping systems and encoders in-house, so the spindle's electrical design is under one roof.

Drive side

The drive is selected to the motor's rated voltage and frequency, and its parameters are set to suit.

Package scope

A Haozhi VFD spindle kit is defined in your quotation. It can be the spindle alone or the spindle with its drive, cabling and collets, so the contents are fixed in writing before you order.

VFD Spindle Specifications

Power, supply voltage and drive frequency are configured per project and confirmed in your quotation. The catalog models below mark the range of speed, power and interface we build in engraving and milling spindles.

Model references: DGZ-06260 T11 engraving spindle, DGZX-08040 ISO20 CNC spindle and DGZX-10030 BBT30 engraving spindle. Drive pairing for each model is confirmed in the quotation.

Pictured: DGZ-06260 T11 engraving spindle.

Parameter	Catalog reference points	Configuration
Power	6 kW (DGZX-10030), 7.5 kW (DGZYX-12024), 11 kW (DGZYX-12030)	Customizable to your material and cut
Max speed	20,000/24,000 rpm (DGZZ-10020/10024), 40,000 rpm (DGZX-08040), 60,000 rpm (DGZ-06260 T11)	Customizable; confirmed per configuration
Tool interface	ISO20, HSK-E25, HSK-E32, HSK-E40, BBT30	Collet or tool-holder interface; customizable
Supply voltage and rated frequency	Set with the drive so motor and VFD agree	Confirmed in quotation
Torque behavior	Dual-winding option (DGZX-12040, BBT30)	Torque- or speed-optimized, per process
Cooling	Air-cooled or water-cooled	Stated in your quote request
Mounting	Clamp or flange style	Fitted to your Z-axis
Encoder	Optional feedback	If your process needs it

Air-Cooled or Water-Cooled VFD Spindle

Air-cooled spindles are the simpler installation and the usual choice for lighter machines. A water-cooled VFD spindle suits heavier or longer duty cycles.

Air-cooled

Water-cooled

Installation

No plumbing, no chiller.

Needs a coolant circuit to install and maintain.

Noise

Cooling fan adds noise.

Typically quieter at the spindle.

Low-RPM torque

Cooling airflow is weaker at low speed, so sustained low-RPM load needs more margin.

Temperature stays steadier, so sustained low-RPM load is easier to hold.

Warm-up

Temperature follows load and ambient conditions.

Coolant loop settles the spindle at a more consistent temperature.

Duty cycle

Suits intermittent and lighter work.

Suits longer, heavier runs.

Cooling type is one of the options we customize. State your preference and duty cycle in the quote request, and engineering will confirm the fit.

Example Configurations

Each starting point below is a specification brief. Final values are confirmed in the quotation.

Air-cooled retrofit

Straightforward mounting, no coolant circuit, drive supplied as a matched pair. Quote this configuration.

Water-cooled spindle

Coolant circuit planned into the machine, drive matched to the motor. Quote this configuration.

Automatic tool change

Holder interface confirmed with engineering before the order. Quote this configuration.

Woodworking and routing

Specified for routing duty on a wood-cutting machine. Quote this configuration.

Compatibility and Fit

Check these before you order:

Mounting

Body diameter, clamp or flange, and the space available on your Z-axis.

Speed control

How your controller commands the drive (analog or PWM input).

Supply

Available voltage and phase at the machine.

Drive placement

Enclosure space for the VFD and routing for a shielded spindle cable.

Tool holding

Collet size or holder interface.

Tool Holding and Collets

For collet-based tool holding, our ER precision collets cover the ER side. If your machine uses automatic tool change, the holder families are BT-ER and BBT-ER. Interface compatibility is confirmed per spindle model, so state your tool-change requirement in the quote request.

ER collets and a tool holder beside a spindle nose

Spindle beside a wood offcut and an aluminum plate

Application Fit

Wood and routing builds can start from our CNC woodworking spindles. For the wider range, see engraving and milling spindles. We supply components, not machined parts, so the spindle is sized to your machine and process.

Why Source a VFD Spindle from Haozhi

In-house core parts

Motors, rotors, stators, clamping systems and encoders are developed and made by Haozhi.

Three-stage inspection

Initial, specialized and cross inspection, with traceability. See quality control.

Metrology

Taylor Hobson roundness measurement, Zeiss CMM and a Swiss universal length measuring machine.

Management systems

ISO 9001 and ISO 14001, plus CE conformity for applicable products and markets.

Scale

An annual capacity of 400,000+ spindles and 800+ patents to date.

DGZ-06260 T11, a 60,000 rpm engraving spindle from the catalog.

Customization and Lead Time

We customize speed, torque, power, cooling type, interface, tool holder and encoder options.

Standard products

Lead time depends on power, cooling and whether the drive ships with the spindle. We confirm the delivery date in your quotation.

Customized solutions

Engineering and testing are added to the schedule, so timing depends on complexity and is agreed before you order.

OEM volume

Delivery is planned from your annual production forecast.

Installation, Wiring and Support

Three things decide whether a VFD spindle runs cleanly: drive parameters matched to the motor, a shielded spindle cable, and sound grounding with the drive mounted away from sensitive signal wiring. Haozhi provides installation guidance, application engineering, performance testing and online or on-site troubleshooting. Repair and maintenance are available worldwide through certified service partners.

Spindle with a shielded cable beside a compact drive

Request a Quote

Send us your machine type, spindle diameter or mount, supply voltage, target RPM, cooling preference, tool interface, quantity and target delivery date. We will return a matched spindle and drive configuration.

Request technical consultation

VFD Spindle FAQ

What is a VFD spindle?

It is an AC spindle motor driven by a variable frequency drive. The drive sets speed by changing its output frequency, so your CNC controller can command RPM directly.

What is the minimum order quantity?

MOQ is not published. It is confirmed in your quotation for the configuration you specify. State your quantity in the quote request. For OEM volume, delivery is planned from your annual production forecast.

Which drive brand is supplied with the spindle?

The drive is selected to suit the motor's rated voltage and frequency. The specific drive model is listed in your quotation, so you see exactly what is matched to the spindle before you order.

How much does a VFD spindle cost?

There is no public price list. Cost depends on power, cooling type, tool interface, encoder and whether a matched drive is included. Price is set in a quotation based on your specification.

Discuss Your CNC Spindle or Motion Component Project

Share your machine type, machining process, performance targets or existing component specifications with Haozhi. Our technical team can support spindle selection, application matching, custom development and motion-component integration for new equipment and upgrade projects.

Mobile/Whatsapp

+86 186 6567 2648
Tel

+86 (20) 6225 7588 ext. 8558
Email

global@haozhihs.com
Address

No. 68 Hefeng Road, Huangpu District, Guangzhou, Guangdong Province, China, 511356