Japan's Kobelco Motors has started manufacturing speed detectors for China's high-speed rail systems, drawing on technology from the Japanese Shinkansen, at a joint venture production facility in China. These devices are essential for transmitting critical data such as train speed to control systems. Previously manufactured in Japan, the production has now been localized in response to Chinese government regulations, which require greater domestic sourcing and production. This shift, while more costly, supports long-term sustainability and compliance with local policies.
The production is managed by Tianjin Kobelco Electric, a joint venture between Kobelco and Chinese machinery manufacturers. Initially, the components were produced at Ise Manufacturing Co., Ltd. in Mie Prefecture, Japan. However, through technology transfer and production support, the joint venture has now taken over the manufacturing process. The current monthly output stands at 40 units, with plans to double it to 80 units within a year. Additionally, the company aims to increase the percentage of locally sourced parts to enhance self-sufficiency.
The speed detector is installed on the train’s axle and measures rotational changes to determine the train’s speed. This information is then sent to the automatic train control (ATC) system and the brake control unit, helping to reduce unnecessary braking and idling, which can cause track wear. Each high-speed train is typically equipped with between 8 to 20 of these detectors, ensuring precise and safe operation across the network.
This move not only strengthens Kobelco's presence in the Chinese market but also demonstrates its commitment to adapting to local needs and fostering technological collaboration. As China continues to expand its high-speed rail infrastructure, the role of such critical components becomes even more vital.
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