Product Series Overview

Guangzhou HaoZhi Industrial Co., Ltd. offers a broad portfolio of electric spindle products and related components, including specialized series for PCB, glass grinding, high-gloss finishing, ultrasonic applications, machining centers, drilling/tapping, engraving/milling, hydrostatic grinding, lathe, woodworking, reducers, linear motors, turntables, clamps, and hydrogen electric air compressors.

Company Profile and Capabilities

Founded in 2006 and publicly listed since 2016, HaoZhi Industrial is a national high-tech leader focused on R&D, manufacturing, sales, and maintenance of core components for mid- to high-end CNC machine tools, robots, and new energy vehicles. The company holds a global leadership position in electric spindles, supported by:

• 300+ R&D staff with 12% graduate degrees
• R&D investment exceeding 8% of revenue over three years
• 779 patents as of December 2023
• Comprehensive high-end laboratories for physical, bearing, motor, cutting, EMC, and reliability testing
• World-class 189,000 m² production base with annual capacity of ~120,000 spindles
• Ultra-precision machining achieving 0.1 μm accuracy
• Asia's first fully automated spindle production line

Engraving and Milling Electric Spindle Series

Designed for advanced sectors such as medical, aerospace, automotive, electronics, jewelry, and energy, this series supports machining of titanium, aluminum alloys, molds, glass, graphite, and composites. Key performance features include:

• High precision: thermal elongation <0.03 mm, runout ≤0.001 mm, vibration ≤0.8 mm/s (customizable to 0.5 mm/s), surface roughness Ra0.05 achievable
• High rigidity with optimized shaft and bearing design
• High efficiency motors: asynchronous or synchronous (30% higher power/torque in same volume)
• Super long-life broach mechanism (>10 million tool changes) with superior vibration stability and maintenance-free operation
• Advanced sealing combining labyrinth and air curtain seals validated on ~100,000 units
• Double winding spindle design enabling switching between low-speed high torque and high-speed high precision modes

Technical Specifications and Naming Conventions

Spindle model names encode enterprise code, bearing type, application, diameter, max speed, output power (S1 rating), and tool interface (HSK, ISO, T11, BBT). Examples include:

• DGZ-06260-ISO: 61.92 mm diameter, 60,000 rpm max speed, asynchronous motor, ceramic bearings, 1.5 kW S1 power, air cylinder tool change, water cooling recommended
• DGZX-08040/4.0-ISO and DGZX-08040/4.0-HSK: 80 mm diameter, 40,000 rpm max speed, 4.0 kW S1 power, with ISO or HSK E25 tool interfaces

Performance Curves

Power and torque curves for high-speed windings show:

• Power output from 1.5 kW to 6.0 kW (S1 and S6 ratings)
• Torque from 0.24 Nm to 1.93 Nm (S1 and S6)
• Peak power up to 7.29 kW and peak torque up to 2.53 Nm for larger spindles

General Technical Specifications

• Diameter: 100–120 mm
• Max Speed: up to 42,000 rpm (high-speed winding), some models support 15,000 rpm (low-speed winding)
• Tool Interfaces: ISO 25, HSK E32/E40, BBT 30, cam tool change
• Bearing Type: Ceramic ball bearings standard
• Motor Types: Asynchronous and permanent magnet synchronous
• Rated Voltage: 220V or 380V depending on model
• Cooling: Water cooling (3–6 L/min at 0.25 MPa), air seal gas (50–60 L/min at 0.15 MPa)
• Tool Change: Pneumatic or cam tool change at 0.55–0.60 MPa air pressure
• Motor Temperature Sensors: Optional KTY or PTC sensors
• Vibration Velocity: ≤0.8 mm/s
• Weight: 8–28 kg depending on size/configuration

Performance Parameters

• Power Output (S1): 4.0–11.0 kW
• Power Output (S6): 6.0–16.5 kW
• Torque Output (S1): 1.27–10.3 Nm
• Torque Output (S6): 1.91–15.45 Nm
• Peak Power: 7.29–27.86 kW
• Peak Torque: 2.53–27.86 Nm
• Rated Current: 8–36.8 A (asynchronous), up to 48 A (synchronous)

Cooling and Lubrication

• Water cooling is preferred with specified flow and pressure
• Air seal gas flow maintained to protect bearings and seals
• Lubrication varies: grease or oil/gas depending on spindle design

Tool Change and Operational Features

• Pneumatic and cam tool changers operate at 0.55–0.60 MPa air pressure
• Tool clamping forces specified (e.g., 2900 N ±10%)
• Vibration velocity controlled to ≤0.8 mm/s to ensure precision and spindle longevity

Summary of Critical Parameters (Table)

Advanced Spindle Models (150 mm Diameter)

Models with diameters around 150 mm and lengths from 400 mm to 599.5 mm are detailed, featuring asynchronous or synchronous motors, water cooling with oil mist or grease lubrication, and tool interfaces such as HSK-E50, HSK-A63, and BBT40. Key examples include:

• DGZX-15024/13: 24,000 rpm max, 13 kW S1 power, 20 Nm torque, 45 kg weight
• DGZX-15036/25: 36,000 rpm max, synchronous motor, 25 kW S1 power, 15.9 Nm torque, 45 kg
• DGZX-15024/13.5: 599.5 mm length, 13.5 kW S1, 20.3 Nm torque, 55 kg
• DGZYX-15020/22: 20,000 rpm max, synchronous motor, 22 kW S1, 42 Nm torque, 55 kg

Graphical Data Interpretation

Power-speed and torque-speed curves illustrate spindle performance across operating speeds and duty cycles (S1 continuous and S6 intermittent). These assist in selecting spindles optimized for specific machining tasks.

Additional Notes and Limitations

• Most spindles lack vibration sensors and spindle growth detection systems; some offer optional bearing thermistors
• Cooling primarily water-based, with oil mist or grease lubrication options
• Encoders provide Sin/Cos signals at 1 Vpp for precise position feedback

Recommendations and Best Practices

• Maintain recommended water cooling flow and pressure for optimal temperature control
• Ensure air seal gas flow rates to protect bearings and seals
• Use motor temperature sensors for preventive maintenance
• Keep tool change air pressure within specified range for reliable operation
• Monitor vibration velocity to prevent premature wear and maintain machining accuracy

Conclusion

This document thoroughly details the specifications, performance, and operational guidelines for a wide range of high-speed electric spindles tailored for advanced manufacturing industries. Emphasis is placed on precision, reliability, and efficiency through proper cooling, lubrication, and operational controls.