According to manufacturer Kapp, the RX 59 grinding machine can efficiently produce rotors used in air compressors with the company’s CBN-plated tools. The tools have a single layer of CBN abrasive held in a nickel bond to a steel body. The grinding spindle accommodates several wheels, which are applied sequentially by moving the machine’s shift axis. This enables a two-stage grinding process of roughing and finishing. In addition, the machine’s integrated measuring equipment allows size control in the micron range. In addition, the machine’s direct-drive spindle motors provide fast cycle times, the company says.