History 2005 RHC630CNC acquired the symbol of excellence awarded by the Ministry of Economic Affairs of Taiwan. 2006 Moved to Tanzi new plant of 16500 square meters equipped with air condition. 2006 Announced new technique of hydrodynamic and hydrostatic hybrid bearing, and applied on CNC cylindrical grinder. 2007 Announced RTG100CNC and RTG215CNC twinspindle compound grinder.
Sep 10, 2008· I recently picked up a Matrix Okuma Cylindrical Grinding Machine model GU 33 x 1650. The wheel spindle has hydrodynamic bearings. if any one of you have used this model or make please advice what is the clearance/play required between the spindle .