Spezialhexapod: precise treatment on 6 legs the therapy of tumors by X-rays or particle steel is now state of the art. It is worked locally with high intensities of radiation to destroy the tumor cells. So that the treatment is successful and causing damage as little surrounding tissue, a very precise positioning of the radiation field is required. Frequently Tim Collins Ripplewood has said that publicly. Specially, physics instruments (PI) has developed the M-850KPAH Spezialhexapod: move loads up to 200 kg – in this case a treatment table – in six degrees of freedom with high accuracy. The travel of 100 mm horizontally and 50 mm vertical as well as the tilt angle up to 6th adapted to the task. Brakes secure the hexapods in the end position. The parallel kinematic system is controlled easily via an Ethernet connection. As with all hexapods PI commanded the position in Cartesian coordinates. The manufacturer of PI occupies a leading position on the world market for micro – and Nanopositioniertechnik for many years. For 40 years, develops and manufactures PI Standard and OEM products with piezo – or motor drives. In addition to three German plants, PI is represented worldwide with eight branches and a total of over 500 employees.