Company Overview

Guangzhou Haozhi Industrial Co., Ltd., established in 2003 and publicly listed since 2017, is a leading high-tech enterprise specializing in the research, design, 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 spindle products and operates manufacturing facilities across China, Spain, France, and Switzerland. With a strong R&D team exceeding 300 personnel and over 300 patents, Haozhi emphasizes independent technological innovation.

Product Range

• Electric spindles tailored for diverse applications including PCB drilling, glass grinding, superfinishing, ultrasonic machining, engraving, milling, grinding, lathe operations, woodworking, and dental tools.
• Additional components such as reducers, linear motors, rotary tables, tool holders, collets, clamping devices, and hydrogen electric air compressors.

High-Gloss and Superfinishing Electric Spindle Series

This series targets ultra-precision finishing tasks on metals (aluminum, copper alloys) and non-metals (acrylic). Key features include:

• Aerostatic (gas) bearings enabling non-contact, wear-free operation for extended lifespan.
• Exceptional static and dynamic accuracy (up to 0.1 μm machining precision) surpassing ball bearing spindles.
• Low vibration, high rigidity, and high load capacity validated by proprietary simulation tools.
• High-performance asynchronous induction or permanent magnet synchronous motors delivering high torque.
• Double helix cooling structures ensuring stable temperature control.
• HSK E series tool holders (E25, E32, E40, E50) available on some models for enhanced positioning accuracy and automatic tool changing.

Surface finish quality achievable is Ra ≤ 0.02 μm for grinding, mirror milling, and chamfering.

Technical Specifications and Performance Parameters

• Spindle diameters range approximately from 40 mm to 90 mm.
• Maximum rotational speeds up to 90,000 rpm depending on model.
• Tool interfaces include ER collets, straight shank collets, and HSK E series holders.
• Bearings are aerostatic (air) type.
• Motors include asynchronous induction and synchronous permanent magnet types, typically rated at 380 V.
• Power outputs vary from 0.8 kW to 4.5 kW; torque ranges from 0.1 Nm to 0.9 Nm.
• Cooling methods involve water or oil with specified flow rates and double helix cooling designs.
• Tool changing can be manual or automatic pneumatic, requiring air pressure between 0.4–0.6 MPa.
• Vibration velocity is maintained below 0.5 mm/s to ensure precision.
• Spindle weights vary from 1.2 kg to 6 kg depending on the model.

Motor winding power and torque characteristic curves illustrate performance under continuous (S1) and intermittent (S6-40%) duty cycles, highlighting peak values.

Laboratory and Quality Assurance

Haozhi operates advanced laboratories for physical and chemical testing, bearing analysis, precision measurement, motor and cutting performance testing, linear motor and reducer evaluation, robot testing, and reliability assessments. Nano-level precision instruments ensure stringent quality control.

Manufacturing and Innovation Philosophy

The company prioritizes mastery of core technologies to deliver products with high precision, efficiency, and stability. Emphasizing simplicity and craftsmanship excellence, Haozhi aims to support global advanced manufacturing and enhance human experience through continuous innovation.

Additional Technical Details

Spindle Specifications

• Diameter and speed vary by model, with maximum speeds up to 60,000 rpm.
• Tool interfaces primarily include HSK E types.
• Air bearings support high-frequency operation (~50,000 Hz).
• Motors operate at rated voltages around 380 V.
• Cooling systems use water or air flow with minimum flow rates specified to maintain optimal temperatures.
• Tool change mechanisms are manual or automatic pneumatic, requiring air pressure of 0.4–0.6 MPa.
• Vibration velocity is controlled to ≤ 0.5 mm/s; spindle weights typically range from 10 to 40 kg depending on model.

Motor Performance Characteristics

• Power output ranges from 1.2 kW to 12.75 kW for continuous operation (S1) and up to approximately 18 kW for intermittent operation (S6-40%).
• Peak torque can reach up to 20.3 Nm.
• Rated currents are specified for different operating conditions.
• Motor winding diagrams illustrate relationships between speed, torque, and power, highlighting peak performance.

Cooling and Gas Flow Parameters

• Air bearing gas flow rates typically range from 10 to 50 liters per minute.
• Water cooling flow rates have minimum specified values to ensure effective thermal management.

Sensor and Monitoring

• Motor temperature is monitored using KTY series temperature sensors to maintain safe operating conditions.

Operational and Maintenance Recommendations

• Vibration velocity limits are enforced to maintain spindle stability and precision.
• Tool change air pressure requirements ensure reliable and safe tool replacement.
• Both manual and automatic tool change options are available depending on spindle model.

Market and Service Information

• Global presence with sales and service centers in China, Switzerland, France, Belarus, Spain, and Russia.
• Strong commitment to delivering value to customers, shareholders, employees, and society.

Summary of Critical Parameters

Conclusion

This document provides a comprehensive technical reference for selecting and operating high-speed spindles in precision manufacturing environments. It details mechanical, electrical, and thermal parameters essential for optimizing spindle performance and reliability. The inclusion of motor winding power and torque diagrams supports understanding of operational limits and capabilities, while extensive quality assurance and innovation efforts underpin product excellence.