This series of vertical grinder can be engaged in outside diameter, inside diameter and surface grinding. According to the shape of the workpiece, these three works can all be implemented in a single chuck loading while avoiding the error caused by multiple loading and fixing. Roundness between the inside and outside diameters, as well as perpendicularity of the inside and outside diameters to the surface, can be more precisely maintained. Because the workpiece and the grinding spindle are vertical, there is virtually no downturn problem to solve. Used in the grinding of hydraulic and pneumatic components, hydraulic motor components, automotive steering pump parts, refrigeration compressor parts, oil pump nozzle parts, engine parts, high precision bearings, seals, piston rings, cutting tools, molds, instruments, carbide blades, ceramic valve core, magnetic materials and other products.