Did You Know? Back in 1953, Shibaura Machine (then Shibaura Machine Works Co., Ltd.) introduced a true game-changer, the HRS-500 Master Gear Hobbing Machine, setting new standards in high-precision engineering. The first part it ever produced? A massive ring gear for a vertical boring and turning mill used in machining turbine blades for the Sakuma Dam, a landmark project in Japan’s post-WWII industrial revival. The machine’s seventh master worm wheel set a world benchmark in precision, achieving a maximum cumulative pitch deviation of just 0.004 mm, a record that still stands today. With the capability to cut gears up to 5,000 mm in diameter, the HRS-500 paved the way for ultra-large reduction gears powering marine turbines and energy infrastructure around the world. At Shibaura Machine, we don’t just build machines; we engineer the future of precision.