Manual Surface Grinder Manual Surface Grinder GMD:Manual transmissions on X,Y,Z axes GMD A:Electric transmissions on X,Y axes; manual transmission on Z axis GMD B:Hydraulic transmission on X axis, electric transmissions on Y axis, manual transmission on Z axis GMD C:Hydraulic transmission on X axis,electric transmissions on Y,Z axes ModelUnitsGMD 200GMD 200BTable Size (L×W)mm480×200Max. size to ...