HSZ270 Electric Spindle Air-Cooled Direct Drive Motor

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HSZ270 Electric Spindle Air-Cooled Direct Drive Motor

HSZ270 air-cooled direct drive spindle motors eliminate transmission losses, delivering Tier 1 energy efficiency and high overload capacity for precision industrial machining.

Core Engineering Advantages

As an independent manufacturer, we engineer the HSZ270 series to solve the mechanical degradation and transmission inefficiencies inherent in traditional motor-drive configurations. By integrating advanced permanent magnet technology, this electric spindle motor delivers raw power directly to the driven shaft.

Reliable Coaxial Transmission: By directly utilizing the machine spindle, the motor rotates coaxially at the exact same speed as the driven shaft. Eliminating conventional gearboxes, belts, and pulleys eradicates mechanical backlash and drastically reduces transmission power losses.
Tier 1 Energy Saving: Incorporating high-density permanent magnet technology, these air-cooled direct drive motors consistently meet or exceed national Tier 1 energy efficiency standards, lowering your Total Cost of Ownership (TCO) during continuous facility operations.
Ultra-Compact with Massive Overload: Despite being significantly more compact and lightweight than conventional induction motors of equivalent power ratings, the HSZ270 exhibits an aggressive overload multiplier of ≥ 2.5. It effortlessly handles sudden heavy-load conditions without stalling or thermal faulting.
Surpassing IEC Constraints: Breaking free from the physical constraints of conventional IEC frame sizes, our engineering team custom-engineers this series to deliver a remarkably wide power range, from 2.2kW up to 37kW, with peak torque ratings capable of reaching 590Nm.

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Thermal Management & Stator Protection

Industrial environments expose motors to dust, vibration, and thermal stress. The HSZ270 series addresses this with ruggedized internal construction:

Stator Potting Technology: Every unit in this series features advanced stator potting. This encapsulation protects the copper windings from vibration and environmental contaminants while significantly improving thermal conductivity away from the core.
Adaptive Cooling Modes: To maintain strict thermal equilibrium across different power loads, models from 2.7kW to 7.5kW utilize optimized Natural Cooling, while heavy-duty models from 9kW to 37kW are equipped with high-efficiency Forced Cooling mechanisms.

Air-Cooled Direct Drive Motor Technical

INSTALLATION AND DIMENSIONS

Frame Size

Flange Size

Shaft End Size

Model

KL1

KB1

KB2

KB3

KB4

S, kW, RH

HSZ270

288

330

—

269.7

160

Φ290

Φ13

Output shaft adjustable
according to the loading device

TECHNICAL PARAMETERS

Type Designation	Rated Voltage	Rated Power	Rated Speed	Rated Torque	Overload Multiplier	Stator Protection	Cooling Mode
HSZ‑PM38H270‑270N07‑S05	380VAC	2.7kW	750rpm	35Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H270‑270N06‑S05	380VAC	2.7kW	650rpm	40Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H370‑270N03‑S05	380VAC	3.7kW	300rpm	118Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H370‑270N05‑S05	380VAC	3.7kW	500rpm	70Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H370‑270N07‑S05	380VAC	3.7kW	700rpm	51Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H550‑270N03‑S05	380VAC	5.5kW	300rpm	175Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H550‑270N05‑S05	380VAC	5.5kW	500rpm	105Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H550‑270N07‑S05	380VAC	5.5kW	700rpm	75Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H550‑270N10‑S05	380VAC	5.5kW	1000rpm	53Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H750‑270N05‑S05	380VAC	7.5kW	500rpm	143Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H750‑270N07‑S05	380VAC	7.5kW	750rpm	95Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H750‑270N10‑S05	380VAC	7.5kW	1000rpm	72Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H750‑270N15‑S05	380VAC	7.5kW	1500rpm	48Nm	≥2.5	Stator Potting	Natural Cooling
HSZ‑PM38H900‑270N07‑F05	380VAC	9kW	750rpm	115Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H900‑270N10‑F05	380VAC	9kW	1000rpm	86Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1100‑270N05‑F05	380VAC	11kW	500rpm	210Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1100‑270N07‑F05	380VAC	11kW	750rpm	140Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1100‑270N10‑F05	380VAC	11kW	1000rpm	105Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1100‑270N12‑F05	380VAC	11kW	1200rpm	87Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1100‑270N15‑F05	380VAC	11kW	1500rpm	70Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1300‑270N10‑F05	380VAC	13kW	1000rpm	124Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1300‑270N15‑F05	380VAC	13kW	1500rpm	83Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1500‑270N10‑F05	380VAC	15kW	1000rpm	143Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1500‑270N13‑F05	380VAC	15kW	1300rpm	110Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1500‑270N15‑F05	380VAC	15kW	1500rpm	96Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1800‑270N07‑F05	380VAC	18kW	750rpm	230Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1800‑270N10‑F05	380VAC	18kW	1000rpm	172Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H1800‑270N15‑F05	380VAC	18kW	1500rpm	115Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H2200‑270N10‑F05	380VAC	22kW	1000rpm	210Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H2200‑270N12‑F05	380VAC	22kW	1200rpm	175Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H2200‑270N15‑F05	380VAC	22kW	1500rpm	140Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H3000‑270N15‑F05	380VAC	30kW	1500rpm	191Nm	≥2.5	Stator Potting	Forced Cooling
HSZ‑PM38H3700‑270N15‑F05	380VAC	37kW	1500rpm	235Nm	≥2.5	Stator Potting	Forced Cooling

Request a Quote on Direct Drive Motors

Ready to eliminate gearbox maintenance and boost your machine’s efficiency? Partner with Volcano Electric for factory-direct drive solutions. Send us your dynamic load requirements and spatial constraints today. Our engineering team will provide a customized technical proposal, 3D CAD models, and competitive factory-direct pricing to ensure a perfect fit for your CNC equipment.

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Industrial Applications

The direct-drive architecture and robust overload capacity make the HSZ270 the definitive power source for equipment requiring both exact speed regulation and high torque transmission. Engineered as a premium CNC spindle motor, it excels in the following sectors:

Metalworking & Precision Machining: CNC machining centers, heavy-duty CNC grinders, and automated milling equipment.
Web Handling & Converting: PVC multi-layer laminators and continuous automatic tape winders.
Material Processing: Any high-load rotary equipment where traditional gearbox maintenance causes unacceptable downtime.

Technical FAQ: Air-Cooled Direct Drive Motors

How does eliminating the gearbox improve the efficiency of the HSZ270?

Traditional gearboxes and pulley systems inherently suffer from mechanical friction, resulting in transmission power losses. By utilizing a direct drive motor, the HSZ270 rotates coaxially with the load, achieving near-zero transmission loss and immediately enhancing the overall energy efficiency of the machine tool.

What is the benefit of Stator Potting in this electric spindle motor?

Stator potting involves encapsulating the motor's stationary windings in a specialized thermal resin. This process prevents wire fatigue from high-frequency vibrations, locks out moisture and machining dust, and creates a superior thermal bridge to dissipate heat into the motor casing.

Do I need Forced Cooling for my application?

Cooling requirements are dictated by the power output and operational duty cycle. Our engineering specifications dictate that HSZ270 models operating between 2.7kW and 7.5kW function perfectly with Natural Cooling. For higher-demand applications utilizing our 9kW to 37kW models, Forced Cooling is integrated to guarantee thermal stability during continuous heavy-duty cycles.

Can the output shaft be customized for our specific CNC grinder?

Yes. As an independent factory brand, we maintain total control over our manufacturing process. The shaft end size (S, RH) of the HSZ270 can be custom-engineered and adjusted to perfectly mate with your specific loading device or machine spindle.