... and not lubricated 2) Operating speed: 50-500mm/s 3) Oil: lubricated and not lubricated QGBJI Series Cylinders: This series ... with CNC milling and turning machines, CNC Lathes, etc. 3. Quality Certificates: ISO9001-2000, ISO9001-2008 Quality Assurance System, ... forging parts, engineering goods, etc. 5. Quality control following 3 phases of thorough inspection, first-off inspection, during-processing ...