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HomeHome Products ATC Spindles

ATC Spindle Configurations

Choose by tool-change interface first. Power, speed, cooling and bearing type follow from that choice and from your process.

HSK Automatic Tool Change Spindles

HSK spindles are offered across the CNC milling spindle range, and HSK automatic tool change is also available on ultra-precision finishing spindles. Pair them with an HSKA-KR tool holder for high-precision collet clamping.

Speed and rigidity

The hollow-shank taper suits higher-speed milling, and the catalog runs HSK-A63 spindles to 24,000 rpm. For heavy, low-speed cuts, check the torque figure on the datasheet before assuming it matches a BBT equivalent.

Holders and cost

The HSKA holder family (ER, KR, SK) is in the catalog. HSK spindles and holders generally cost more than BBT equivalents, so confirm pricing per configuration.

DGZZ-10012C spindle with metallic and black components

BBT Automatic Tool Change Spindles

BBT variants sit in the same milling spindle range, including dual-winding designs for torque- or speed-optimized duty. A BT-ER tool holder is the general-purpose starting point for ER collets. DGZZ-10012C is a 12,000 rpm BBT30 direct-drive spindle.

Speed and rigidity

The BT-family taper is a sound fit for general machining-center duty and heavier cutting at moderate speeds. The listed BBT30 spindles reach 24,000 rpm, and the BBT40 models run at 15,000 rpm.

Holders and cost

BT-ER, BT-KR and BT-SK holders (and BBT-ER and BBT-SK for BBT) are in the catalog, and BT-family holders are widely available. BBT is usually the lower-cost interface, but we quote per configuration.

Quick Tool-Change Spindles for PCB and Precision Work

PCB spindles use quick tool-change structures in air-bearing and ceramic-ball-bearing designs from 60,000 to 400,000 rpm. See the PCB drilling and routing spindles. That speed range belongs to the PCB line, not to milling ATC spindles.

Compact silver spindle with a collet nose and a small drill bit on a bench

ATC Spindle Models at a Glance

Representative HSK and BBT models from the catalog. DGZZ-10012C and DGZZ-10020/10024 are mechanical (direct-coupled) spindles with no built-in motor, so power and torque come from your drive motor. Their tool clamping force is 3,000–3,600 N on the DGZZ-10012C and 2,700–3,100 N on the DGZZ-10020/10024. DGZYX-12024 uses a cam-actuated (mechanical) tool change, so no unclamp air pressure applies. The other electric models unclamp with a hydraulic cylinder, and the catalog gives no unclamp pressure. Electric-model ratings below are S1. DGZX-15020/20 is also built as BBT40, with speeds of 15,000/20,000 rpm on that sheet.

Tell us the interface size and the speed and power you need, and we will match a model or customize one.

What You Specify

Each configuration is built from these choices.

ParameterWhat you choose
Tool-change interfaceHSK or BBT
Tool holderMatched to the interface and collet type
Speed, torque, powerPer your process; dual-winding options available
Cooling typePer spindle model and duty
Bearing typeBall bearing or air bearing
EncoderEncoder options available
MountingMatched to your machine layout

In-House Clamping and OEM Supply

The tool-change interface depends on the clamping system, and Haozhi develops and manufactures its clamping systems in-house, along with motors, rotors, stators and encoders. Interface changes therefore don't depend on third-party parts. The figure is the DGZZ-10020/10024 dimensional drawing (20,000/24,000 rpm, BBT30).

Technical drawing of DGZZ-10020/10024 high-speed spindle with labeled dimensions

Customization

Speed, torque, power, cooling type, interface, tool holder and encoder options, designed for CNC machines, robotics, automated production lines and semiconductor equipment.

Lead time

Depends on the interface, configuration and quantity, and we confirm the delivery date in your quotation.

OEM volume

Delivery plans for large-volume projects are arranged from your annual production forecast.

What Your Machine Needs for an ATC Spindle

Interface and holders

A tool holder family that matches the spindle taper.

Tool change

DGZZ-10012C clamps the tool at 3,000–3,600 N and DGZZ-10020/10024 at 2,700–3,100 N; the unclamp actuator is on the machine side. DGZYX-12024 uses a cam (mechanical) tool change. The other electric models unclamp with a hydraulic cylinder; the catalog gives no unclamp pressure.

Cooling

Supply for the cooling type you selected.

Mounting

Flange or body mounting that suits your headstock or column.

Tool library and workholding

Plan these together. Automation fixtures for machining centers help keep unattended cycles running.

If you are weighing integrated drive architectures, read about motor spindle benefits.

Why Machine Builders Source ATC Spindles from Haozhi

ISO 9001

Quality management

ISO 14001

Environmental management

CE

Applicable products and markets

3-stage

Initial, specialized and cross checks, with traceability

In-house development of clamping systems, motors, rotors, stators and encoders. Three-stage inspection uses Zeiss CMM and Taylor Hobson roundness measurement. Annual capacity of 400,000+ spindles, 400+ R&D engineers and 800+ patents.

Spindle lying beside a tool holder, an open case, and a wrench

Service and Support

Support includes application engineering, installation guidance, performance testing and diagnostics, and online or on-site troubleshooting. Global repair and maintenance run through certified service partners.

Request a Quote for ATC Spindles

Send your machine type, tool interface, target power and speed, cooling preference and annual volume. We will recommend a configuration and quote it against your requirements.

Request Technical Consultation

FAQ

What drawbar force does an ATC spindle provide?

Drawbar (clamping) force is set by the clamping system in each model. Catalog examples: 3,000–3,600 N on the DGZZ-10012C and 2,700–3,100 N on the DGZZ-10020/10024. Because Haozhi makes the clamping system in-house, it can be matched to your tool holder and interface. Send the holder type and target cutting loads for a confirmed figure.

Can an ATC spindle be retrofitted to my existing machine?

It depends on your tool-change interface, mounting, cooling supply, tool-change circuit and electrical interface. Interface, tool holder, cooling and encoder options can be customized, so send your machine's mounting dimensions and drive details and we will check fit before you commit.

What are the MOQ and sample lead time?

Haozhi does not publish a minimum order quantity. Sample lead time depends on the spindle model and configuration and is confirmed in your quotation. Demo units may be available to long-term partners or for OEM requirements, depending on stock and project evaluation.

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.
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