A machine frame for a machine tool having - two longitudinal members running in a first direction and two transverse members connecting the longitudinal members and running in a second direction running transversely to the first direction, wherein the longitudinal members and transverse members (101, 102) define a machining space for the machine tool, - at least two, preferably at least four, first floor fastening units for the predominant transmission of forces in the first direction into a foundation, wherein the first floor fastening units are fastened to ends of the longitudinal members, and - at least two second floor fastening units for the predominant transmission of forces in the second direction into a foundation, wherein the second floor fastening units are fastened to at least one of the longitudinal members in its central region, wherein one, preferably exactly one, longitudinal member to which the second floor fastening units are fastened has a cross-sectional geometry for the predominant force transfer in the second direction, the cross-sectional geometry has a triangular cross-section with an angled outer panel and/or an angled inner panel, where a surface element is inserted into the cross-section in a force-fitting manner, the second floor fastening unit has an inner floor fastening arranged in the machining space and an outer floor fastening arranged outside the machining space, wherein the surface element connects the two floor fastenings (111, 112) and wherein the floor fastenings (111, 112) and the surface element are arranged in a plane perpendicular to the longitudinal member. - two longitudinal members running in a first direction and two transverse members connecting the longitudinal members and running in a second direction running transversely to the first direction, wherein the longitudinal members and transverse members (101, 102) define a machining space for the machine tool, - at least two, preferably at least four, first floor fastening units for the predominant transmission of forces in the first direction into a foundation, wherein the first floor fastening units are fastened to ends of the longitudinal members, and - at least two second floor fastening units for the predominant transmission of forces in the second direction into a foundation, wherein the second floor fastening units are fastened to at least one of the longitudinal members in its central region, wherein one, preferably exactly one, longitudinal member to which the second floor fastening units are fastened has a cross-sectional geometry for the predominant force transfer in the second direction, the cross-sectional geometry has a triangular cross-section with an angled outer panel and/or an angled inner panel, where a surface element is inserted into the cross-section in a force-fitting manner, the second floor fastening unit has an inner floor fastening arranged in the machining space and an outer floor fastening arranged outside the machining space, wherein the surface element connects the two floor fastenings (111, 112) and wherein the floor fastenings (111, 112) and the surface element are arranged in a plane perpendicular to the longitudinal member.