The bolted supporting bearing holder makes it possible to use the full gear torque in a rack and pinion drive for the first time and, as a result, also optimizes the volume performance and rigidity. This makes the rack and pinion drive excellently suited for use in feed axes of machine tools. Helical gearing. Pinion gearing quality 5. Useful accessories such as lubrication system. Attachable to the newest gear units of the PH, PHQ and PHV series.