Machine feet SF31 black

Do not size by the average. A machine on four feet rarely spreads its weight in four equal parts; the center of gravity sits where the heavy components are, and on an uneven floor three feet can carry nearly all of it. So count on a good margin per foot. The thread size is set by the hole in the machine frame, and the spindle length by how much adjustment range you need. Do not pick a longer spindle than necessary, because the further it extends, the weaker the foot gets sideways. If you have vibrating equipment, combine the leveling with well thought out placement; a foot near the stiff points of the frame gives a better result than feet in the middle of weak beams.

At installation: check that the thread runs easily in the hole in the frame before the machine is lowered, set all the feet at roughly half extension and level roughly, then fine tune crosswise with a spirit level on the reference surfaces of the machine. Make sure the spindles are locked once everything is right, otherwise the vibration will readjust the machine for you. A machine that really stands still runs more quietly, gives more even machining results and puts less wear on its own bearings. A spirit level, a wrench and a little patience are all the equipment the whole job needs.

Articulated feet of this type carry production machines, conveyors, packing lines, work benches, cabinets and frames in Swedish industry. They turn up everywhere equipment has to stand still and still be movable, realignable and levelable without chipping and casting concrete. In maintenance terms they are rewarding: a damaged foot is unscrewed and a new one screwed in, with no special tools.

Machines rarely stand on flat floors; concrete slopes, wears and gets patched in stages. Machine foot SF31 is an articulated leveling foot that takes up the unevenness of the floor and lets you level the machine with the spindle instead of with wedges and shims. The foot consists of a base plate, a joint and a threaded spindle that screws into the machine frame. The base plate is molded in impact resistant PA6 (nylon 6) with a matte black surface and a rubber anti-slip pad at the bottom, the spindle is in zinc plated steel and the series is built for heavy loads.

The joint between spindle and base plate allows an angle of up to 20 degrees. That is plenty for the slopes found in workshops and warehouses. The base plate makes contact across its full area even when the frame is not vertical, and the load is spread over the plate instead of resting on an edge that gnaws at the floor. The spindle has wrench flats; the height is adjusted with an ordinary wrench even when the machine is already in place and pressing on the foot. Having the joint in the foot and not in the frame also means the machine can be moved to a place with a different floor slope without any new work. You screw, level and lock again. The wrench flats also keep your hands away from the pinch zone under the frame while you adjust.

SF31 is a series with 117 versions. The base plate comes in diameters from 65 to 125 mm, the spindle in thread sizes from M10 to M30 and in lengths from 25 to 250 mm. The axial load reaches up to 2 500 kg per foot depending on size; the exact value per version is in the manufacturer's data sheet. You pick the size as a variant straight on the product page.

The rubber anti-slip pad spares the floor and keeps the machine from wandering with the vibration, a common problem under equipment that is not anchored to the floor. In other respects dry indoor conditions are home ground for the combination of nylon and zinc plated steel.

Do you have a whole machine line to level? We will help you put together the right combination of feet.