Product Name: M250A Internal Grinding Machine Tool Model NO.: M250A Condition: New Certification: CE, ISO 9001 Precision: High Precision Cylindrical Grinder Type: Internal Grinder Automatic Grade: Manual Controlling Mode: Artificial Abrasives: Grinding Wheel Processing Object: ID 150-500mm Grinding Type: Internal Grinding Machine Roundness of Inner Hole: 5um Cylindricity of Inner Hole: 5um Surface Roughness of Inner Hole: Ra0.63um Grinding Diameter: 150-500mm Max. Grinding Depth: 450mm Weight of Machine Tool: 4550kgs Trademark: CHANGYI Transport Package: Waterproof Film Wrapped, Wooden Case Package Specification: 3860x1600x1850mm Origin: Wuxi, China HS Code: 8460292 Product Description * Main characteristics of this machine tool* The machine is mainly applicable to grind internal hole, internal tapered hole and stepped hole.* The work table is hydraulically driven.The working speed can be steplessly adjusted.* The dressing motion of grinding wheel is controlled by hydraulic handlebar. The dressing speed can be steplessly adjusted.