At EMO Hannover 2017, Zierisch will be presenting its combined external and internal cylindrical grinding machine with a top width of 600 mm. According to the manufacturers, all components of the series are made of cast iron and scraped sliding guides in the Z-axis as V flat guideways provide very good damping properties and high grinding surface quality. Maximum precision and extra accuracy are reportedly achieved by preloaded linear guides in the X-axis. Preloaded ball screws are used in both axes and allow smallest increments in combination with the PLC control and the Heidenhain scale. The company also offers an extensive basic equipment package, including infinitely variable speed control. Optionally, shoulders can be ground automatically and the internal and external radius of the grinding wheel can be adjusted. The machines are available as external cylindrical grinders only, or as combined external and internal cylindrical grinding machines.