The Holroyd story began way back in 1861 when John Holroyd started his machine tool and textile machinery manufacturing business in Hulme, Manchester. And it's been a tale of innovation for the company ever since moving to Milnrow in 1896. In 1897, Holroyd invented the thread milling process and designed, built and patented the first machine of its type. In 1906 it started to produce worm gears along with thread grinding and milling machines. And the innovations kept rolling off the Holroyd production line when, in 1920, it developed the first spuncast Super - Holfos & JH17 Bronze, with high strength and an extremely low coefficient of friction. In 1931, Holroyd set a new world record for 98.2% worm gear efficiency. People said it would never be beaten. And thus far they've been proved right because the record still stands to this day. In more recent times, Holroyd has maintained its proud record of innovation by developing a new range of CNC thread and gear grinding machines based on its unique 'Probe Feedback' and tooth profile correction technology. While, in 2009, the company manufactured and installed the world's biggest rotor milling machine capable of milling rotors up to 824 mm diameter.