Jakob Löwer Inh. von Schumann GmbH & Co. KG

The HBS 400 ub is the speedy solution on offer from Loewer and sands the workpiece from below. The sensor-controlled conveyor belt, located on top, lowers pneumatically onto the workpiece – independent of its thickness. Therefore, a speedy processing is possible even with frequently-varying workpiece thicknesses.

The reverse function, standard on this machine, allows the workpiece to be sanded in both directions, in a forward and backward motion. This can be selected either using the automatic function or selecting the appropriate touch-button.  One operator can sand a 10 m long beam in only four minutes, from three sides.

The soft disc sanding units for top and bottom surface sand across the work piece and therefore cut the fibres extremely short. The velgro covered disc are very soft which leads to a very fine sanding with little pressure and little heat. The sanding action is much more intense compared to brush sanding, but lighter than belt sanding. The result is an even and smooth surface. The soft disc is ideal for smoothening uneveness due to anual grow rings.
Behind the soft disc units there are brush sanding rollers top and bottom in order to create a straight finish. Furthermore the machine is equipped with 4 brush sanding rollers fom the sides in order to sand all profiles and rebates in one pass. The LeistoMat is equipped with a TouchPanel control as well as optical sensors for recognition of work piece width and work piece profile. The sanding units will adjust to different profiles within seconds. When using brush sanding discs instead of soft discs the machine can be used for intermediate sanding as well.