1 Grinding hole dia 6-10mm 2 FANUC/SIEMENS/MITSUBISHI system 3 Roundness 0.002mm 4 Roughness 0.32Ra Wuxi YiJi is a professional grinding machine manufacturer in China. Specialized in this line for over 20 years in producing internal; cylindrical; centerless; high precision; cnc grinding machine(spare parts).Our machies mainly apply for: inner bore and cylindrical grinding of plane, car, machine, ...