Qinchuan Group's Hanjiang Machine Tool Co., Ltd. has successfully developed China's largest-scale "whole-grinding 10m long and heavy-duty ball screw," marking a significant breakthrough in the domestic manufacturing of high-precision rolling functional components. This achievement fills a critical gap in the market, where long-length ball screws with high value have long been dominated by foreign manufacturers due to technical limitations and equipment constraints.
For years, the domestic market for ball screws exceeding 5 meters in length was almost entirely controlled by international players. Hanjiang Machine Tool, as a leading manufacturer of thread grinders and ball screws in China, had previously made progress in developing CNC screw grinders for 3m, 4m, and 5m specifications, securing a strong position in the local market. However, it had not yet entered the 5–10m range for fully ground ball screws—until now.
As the director unit of the Rolling Functional Components Association, Hanjiang Machine Tool leveraged its technological expertise to invest heavily in R&D. Building upon its existing product lines, the company has successfully developed a full series of seven different sizes of CNC screw grinders. This includes models such as HIY-022 (coarse screw), HIY-05 (1m screw), HIY-025 (1.5m screw), HIY-028 (3m screw), and HIY-012 (5m screw), making Hanjiang the only company in China capable of producing complete rolling function components across this range.
Looking ahead, Hanjiang Machine Tool plans to enhance its production capabilities for long lead screws and large-pitch screws over 3 meters. During the "Eleventh Five-Year Plan" period, the company will allocate 250 million yuan in technical transformation funds, aiming to increase annual ball screw production to 400,000 units, rolling linear guides to 200,000 meters, and achieve a production and sales revenue of 800 million yuan. This strategic investment underscores the company’s commitment to strengthening its position in the global precision machinery market.
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