Abstract: The invention relates to a linear guiding device (1) for a feed axis (2), preferably a machine tool (3), comprising at least the following components: At least one sensor surface (4) of the linear guiding device (1) for linearly guiding a carriage (5) or a spindle nut (6); at least one microsensor (7), preferably at least one strain gage (8, 9, 10, 11, 12) and/or at least one resistance temperature sensor (13, 14), for detecting an expansion and/or compression and/or temperature of at least one sensor surface (4), wherein at least one microsensor (7) is permanently connected to at least one sensor surface (4). With the present invention, a load on a linear guiding device can be directly measured during the machine's operation.