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Hunan University has successfully developed China's first high-speed precision permanent magnet synchronous electric spindle by applying the research outcomes of the National Natural Science Foundation of China. This groundbreaking achievement has reached international advanced standards and marks a significant milestone in China's manufacturing technology.
The electric spindle is primarily designed for modern high-speed machining tools, including machining centers, grinders, milling machines, lathes, and drilling machines. It integrates advanced design principles, such as dynamic thermal characteristics, precision machining, and high-accuracy assembly. The product also incorporates high-speed ceramic ball hybrid bearings, oil-gas lubrication systems, and cutting-edge motor and drive technologies. These innovations have led to multiple national patents being granted.
Key technical specifications include a maximum speed of 18,000 rpm, a motor power of 35 kW, a system stiffness of 346 N/μm, a rotational accuracy of 0.0015 mm, and a dynamic balance accuracy of G0. These performance metrics highlight the superior quality and reliability of the product.
According to expert evaluations organized by the Science and Technology Department of Hunan Province, the technology behind this electric spindle is well-established, with significant breakthroughs in core design and development. The product demonstrates strong market potential and is considered a leading innovation in the field of high-speed precision electric spindles. Its achievements reflect not only technological advancement but also a promising future for domestic high-performance machine tool components.