The invention relates to a support profile beam (2) for a tool trolley
system (1) for height-adjustable attachment of
system components (4) to the tool trolley
system (1), wherein the support profile beam (2) has a maximum
spatial extent along a longitudinal axis and can be attached to a
chassis (3) movable via rollers (5) to form a tool trolley system (1) with a vertically oriented longitudinal axis (L), the support profile beam (2) comprising: - a number of grooves (N) running parallel to the longitudinal axis (L) of the support profile beam (2) for adjustable mounting of system components (4), - a shaft (K) inside the support profile beam (2), which runs parallel to the longitudinal axis (L), - a door (6) whose door leaf is pivotably arranged parallel to the longitudinal axis (L) and which, when closed, forms a side wall of the shaft (K), - on the door side at least one closing groove (S) running parallel to the longitudinal axis (L) of the support profile beam (2) with two side surfaces, at least one of which has an
undercut (H), wherein the door (6) has a closing bead (W) which is designed such that, in the
closed state of the door (6), it engages in a form-fitting manner in the
undercut (H) of the closing groove (S). The invention also relates to a support profile
beam system and a tool trolley system.