Application: For grinding and polishing precision aspherical, spherical and plane optics elements. Technical data: 1.Lens diameter: 400mm ( Max.450mm). 2.Number of spindles: 1  3.Pan diameter: 500mm 4.Spindle speed: 2 to 25 rpm (stepless) 5.Spindle positioning circle diameter: Ø50mm 6.Eccentric disc speed of first swing rod : 6 to 75rpm (stepless) 7.Eccentric disc diameter of first swing rod: 230mm 8.Stretch length of first swing rod (oscillation liver): 100mm 9.Moving distance of second swing rod guide: 220mm 10.Distance between positioning circle surfaces of spindle and center of oscillation frame: 230mm. 11.Worktable(Pan) turning angle range: 0 to 90° 12.Oscillating liver pressure: weight. 13.Power: 1.3KW 14.Dimension: Approx.1400×1000×1500mm. 15.Weight: Approx.900kg. Note: The machine can be designed and produced according to buyer’s requirements.