1. ZYS bearing internal grinders is equipped with Japanese FANUC numerical control system and uses plasma touch screen dynamically displaying the grinding process.2. Driven by servo motor and ball screw drive,Website:://.zys-bearing.com, the feeding system can realize highly precise and fast approach with high sensitive slower  feeding.3. Grinding frame guide rail adopts high strength and preload linear motion guide rail, and has the advantages of simple structure, good rigidity and long service life.4. NN series fine grinding bearings are used in work spindle and can bear axial and radial cutting force, applied in high load and heavy cutting applications, i.e. the internal grinding of large size bearings large bearings.5. Enclosed machine guard has beautiful appearance and safe function6. This grinders can grind the outer raceway of taper roller bearings and the groove of ball bearings through changing the wheel