Tube feet RF40 black

Square tube is rarely cut with an end that can stand straight against the floor; the edges are sharp, the profile rattles and the floor covering picks up marks fast. Tube Feet RF40 solve that with a push in foot in PA6 that is pressed into the end of the profile and gives the structure a flat, quiet and floor friendly finish. The foot closes the profile at the same time, so that chips, wash water and debris do not collect inside the tube where they are impossible to get out.

RF40 comes in two sizes: one for profiles with a side dimension of 35x35 mm and a wall thickness of 1.5 mm, and one for 40x40 mm with a wall thickness of 2.0 mm. Just as in the sister series for round tubes it is the inside dimension that decides the grip; each foot is therefore matched to a specific combination of side dimension and wall, not only to the outside dimension. The foot height under the profile is 8 mm for both sizes, the same build dimension as in the round series, which lets you mix round and square legs in the same structure without it leaning.

The material is PA6 with a matte black surface. The nylon is tough enough to take knocks from pallets and forklift wheels without cracking, and it stands up to cutting fluid, oil and normal cleaning agents in a workshop. The foot is held in place by the spring in the material itself, without glue or screw, and can therefore be replaced in seconds when it is worn down. The matte surface does not draw the eye and hides small scratches better than a glossy finish.

Square profile is the first choice in many bases because the profile is stiff in torsion and easy to weld at right angles. That makes RF40 a common sight under workbenches, packing tables, machine guards, gates and racks in Swedish engineering workshops, but the foot works just as well under store fittings and furniture in public spaces. If the structure has both fixed and rolling legs there are wheels for the same profile size, so that all legs can be finished with components from the same family.

Mounting is uncomplicated once the basics are right. Cut the profile square and deburr the inside, otherwise the edges chafe the push in part and the grip is worse than it should be. Press the foot in by hand or tap it into place with a rubber mallet; if it sits loose it is usually the wrong wall thickness you have chosen, not the wrong side dimension. Measure the real wall of the profile with a caliper before you change size. Full dimensions are in the manufacturer's data sheet.

Compared with rubber ferrules and slip on feet the push in foot has two clear advantages. It sits inside the profile and cannot be scraped off when the frame is dragged sideways, and it ages slowly; rubber hardens, cracks and over time leaves dark marks on light floors, while the nylon keeps both shape and color. Order a few extra while you are at it, so there are spares in the drawer the day a foot disappears during a move or a rebuild.

Note that RF40 is a fixed foot without height adjustment. If the frame stands on a floor with large unevenness, adjustable feet are a better choice, but on flat industrial floors the fixed foot gives the lowest overall height, the fewest parts and nothing that can work itself loose over time.

Do you have the drawing in front of you? Send over the profile dimension and wall thickness, and we will confirm which of the two sizes suits your structure.