On March 10, 2026, the VG30 Vertical Compound Grinding Machine and VGS800 Vertical Double-Spindle Cylindrical Grinding Machine developed and manufactured by Shenyang Julang successfully passed the strict acceptance inspection of a German-funded enterprise. This achievement not only confirms the outstanding quality and precision performance of the two machines, but also marks a major breakthrough in Shenyang Julang’s R&D and manufacturing capabilities in the grinding machine industry, enabling the company to join the ranks of high-end grinding machine manufacturers and gain high recognition from the international market.

As core products developed by Shenyang Julang through years of deep cultivation in the grinding machine field, the VG30 and VGS800 integrate a number of innovative technologies in design and performance. With exquisite manufacturing techniques and strict quality control, they feature unique technical advantages that fully meet the high standards and strict requirements of German-funded enterprises for precision processing equipment.

I. Core Technical Features

(1) Technical Features of VG30 Vertical Compound Grinding Machine

1. High-precision positioning and transmission system: The machine adopts high-precision ball screws and linear guides, coupled with a servo direct-drive structure to eliminate transmission backlash. The positioning accuracy of XZ axes reaches ±0.003mm, and the repeat positioning accuracy is ±0.002mm, ensuring stable long-term operation for mass production of precision parts. The sealed protection system isolates dust and coolant, extending service life and reducing maintenance costs.

2. High-rigidity body structure: The frame is made of high-strength cast iron through resin sand casting, aging treatment and vibration stress relief, effectively eliminating internal stress and deformation. The integrated column structure provides excellent rigidity and vibration resistance, ensuring stable grinding accuracy and surface quality.

3. Precision spindle system: The workpiece spindle uses a hydrostatic servo spindle with axial and radial runout controlled below 0.0002mm. The grinding spindle features high-precision bearings with runout below 0.001mm. Stepless speed regulation is available to adapt to various materials and precision requirements, balancing efficiency and accuracy.

4. Integrated compound grinding functions: The VG30 supports internal/external cylindrical grinding, face grinding, and step grinding in one setup, greatly shortening processing flow and improving efficiency. An automatic wheel dressing system monitors wear and maintains precision in real time with minimal manual intervention.

5. Intelligent control system: Equipped with a high-end imported CNC system, it supports parametric programming and graphical operation. Functions include self-diagnosis, accuracy compensation, real-time monitoring and data networking, ensuring stable and reliable processing suitable for intelligent manufacturing.

(2) Technical Features of VGS800 Vertical Double-Spindle Cylindrical Grinding Machine

1. Dual-spindle synchronous design for high-efficiency parallel machining: The vertical dual-spindle configuration allows independent and cooperative operation, increasing productivity by more than 30% compared with traditional single-spindle models, ideal for mass cylindrical parts. High-precision drive structures ensure coaxiality and synchronization for consistent batch processing.

2. Ultra-precision grinding control: Dimensional accuracy reaches ±0.002mm, roundness and profile accuracy ±0.001mm, coaxiality 0.002–0.003mm, and surface roughness Ra 0.2–0.4μm, fully satisfying strict requirements for high-end components in aerospace, precision instruments and automotive industries.

3. Optimized grinding process: Customized grinding paths, wheel selection and algorithms reduce grinding lines and improve surface finish. A high-precision coolant filtration system ensures cleanliness, cooling and lubrication, extending wheel life and lowering production costs.

4. High stability and reliability: World-renowned key components are used with strict quality inspection and assembly. The symmetrical structure provides low center of gravity and strong shock resistance. A full-protection system ensures operator and equipment safety in compliance with industrial standards.

5. Flexible adaptability: The machine accommodates various sizes and materials of cylindrical parts via quick fixture change and parameter adjustment, supporting multi-variety, small-batch production. The CNC system allows customized programming for high versatility.

II. Acceptance Significance and Technical Value

German-funded enterprises are well-known for their strict standards in equipment acceptance. The successful approval of VG30 and VGS800 represents high recognition of Shenyang Julang’s technology and quality, and marks a technological breakthrough of domestic manufacturers in precision grinding, reducing reliance on imported high-end grinding machines.

These two models combine high precision, efficiency, intelligence and flexibility, meeting demands of high-end manufacturing with strong cost-performance and market competitiveness. Moving forward, Shenyang Julang will continue to innovate and upgrade, promoting the high-end, intelligent and international development of China’s grinding machine industry and supporting the high-quality growth of the equipment manufacturing sector.

Shenyang Julang’s VG30 and VGS800 grinding machines successfully passed acceptance by a German-funded enterprise on March 10, 2026, marking a solid achievement for the company in the grinding machine industry.