M618A Manual Surface Grinder 3-axis manual operation High rigidity H-frame column with spindle center to table Enhanced ribbed full cast iron base Enlarged spindle housing for heavier grinding Cartridge w / 4 preloaded class 7 (P4) bearing Roller steel balls on linear table ways for easy and smooth longitudinal movements. Double-V saddle ways for rigidity Manual lubrication system Technical and specification: Table size:180X400mm Max.Grinding size:190X420X270mm Max.Longitudinal travel:200mm Max.Transverse travel:430mm Max.Vertical travel:380mm Grinding wheel speed:2850rpm Wheelhead size:(OD X W X ID) 180 X 13 X 31.75mm