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HomeHome Products Air Cooled Spindles

Air Cooled Spindle Range

Dental Milling Air-Cooled Models

Haozhi's dental spindles come in 33, 45 and 61.92 mm body diameters, in air-cooled or water-cooled designs. DGZ-03360 and DGZX-04560 are the air-cooled options. In a dental mill, an air-cooled body avoids routing coolant lines to a small spindle that already sits in a tight envelope. The full range, with DB121 and B067 tooling, is under dental milling spindles.

silver dental milling spindle with black and white parts
metallic belt spindle with flange and black connector

Belt-Driven Spindles with Natural Cooling

Belt-driven spindles suit machining centers where the motor sits off the spindle shaft. BT40 models run at 8,000–10,000 rpm and BT50 models at 6,000 rpm. With natural cooling there is no coolant circuit to plumb into the headstock. The full family is listed under belt-driven CNC spindles.

Direct-Drive Spindles with Natural Cooling

Direct-drive models couple the motor to the spindle without belts, in BBT30 and BBT40 interfaces. Choose belt drive when you want the motor offset and a simpler mechanical drive. Choose direct drive when you want a compact, in-line spindle at higher speed, such as the 20,000/24,000 rpm BBT30 DGZZ-10020/10024. The range is listed under direct-drive milling spindles.

DGZZ-10012C spindle with metallic and black components

When an Air Cooled Spindle Is the Right Choice

Specify air cooling when:

No pump, tank or chiller

There is no room or budget in the machine for a pump, tank or chiller.

Dry cutting and dust

The process is dry cutting, or the environment is dusty and a coolant loop would add leak or contamination points.

Simple commissioning

Installation and commissioning need to stay simple for end customers.

Air Cooled vs Water Cooled Spindle

Air-cooled spindle with cooling fins and a fan housing

Air-cooled

Water-cooled spindle with coolant fittings and no fan

Water-cooled

Cooling hardware

Fan or natural convection only

Pump, tank and coolant lines

Installation

Fewer connections

Coolant circuit to plumb and commission

Noise

Fan noise on fan-cooled designs

No fan noise

Safer choice for

Intermittent or moderate duty

Sustained heavy duty with high thermal load

The trade-off is limited cooling capacity. If the spindle will run heavy cuts continuously, a liquid-cooled design is the safer route, and Haozhi also offers shaft-core cooling for thermal stability.

Custom Cooling, Speed and Interface Options

Haozhi offers full customization of speed, torque, power, cooling type, interface, tool holder and encoder options, plus application-specific spindle design for CNC machines, robotics, automated production lines and semiconductor equipment. If a catalog air-cooled model is close but not exact, send your target and we work from it.

Submit your requirements
1Air-cooled spindle with cooling fins and loose fittings on a bench

Why Source Air Cooled Spindles from Haozhi

In-house core components

Motors, rotors, stators, clamping systems and encoders are developed and made in-house.

Three-stage inspection

Initial, specialized and cross inspection, with every stage traceable. See quality control.

Named metrology

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

Certifications

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

Scale

An annual capacity of 400,000+ spindles, 20+ years of innovation and 800+ patents. The company is listed on the Shenzhen GEM board (300503).

Spindle standing beside an empty shipping tray and hand tools

Lead Times, Service and Support

Lead time varies by model and configuration. A catalog air cooled spindle and a custom build follow different schedules, and we confirm the delivery date in your quotation. Large OEM volumes get a delivery plan based on your annual forecast.

Support covers application engineering, installation guidance, performance testing and diagnostics. Global repair and maintenance run through certified service partners. Demo units may be available to long-term or OEM partners, depending on stock and project evaluation.

Request a Quote or Technical Consultation

Send these details and our engineers will match a catalog model or propose a custom build: spindle envelope or body diameter, speed and power requirements, duty cycle, including the continuous (S1) rating you need, tool interface, environment (dust, dry cutting), and noise limits, if any. Building a rotary axis into the same machine? See the DZDV-630 rotary table and the DZDC-200-A1, DZDC-260-A7 and DZDC-630 cradle tables.

Contact Haozhi

FAQ

Can an air cooled spindle run continuous duty?

It depends on the model and the load. Air cooling has limited capacity, so it fits intermittent or moderate duty best. For sustained heavy cutting, a liquid-cooled or shaft-core-cooled spindle is the safer choice.

Is dust a problem for air cooled spindles?

Dusty cells are a common reason to choose air cooling, since there are no coolant lines to contaminate. Fan-cooled designs move ambient air, so intake filtering matters.

Are water cooled spindles quieter?

Generally, yes. Air-cooled spindles add fan noise on fan-cooled designs, while water cooling avoids it but needs a pump and coolant loop.

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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