The 22-44OSC Drum Sander has an exclusive oscillating feature, with the push of a button the 22-44OSC sander can be operated as a simple sander or as an oscillating sander. When operating as a linear sander, the sander drum rotates as the conveyor feeds the workpiece through. When in the oscillating mode, in addition to the linear sanding operation, the sanding drum head oscillates from left to right and lowers heat build-up on the sanding belt to reduce loading and burning. Additional features include a built-in cabinet door for easy access to storage, patented conveyor TRACKERS™ that reduce the need for manual belt adjustments and our Exclusive SandSmart™ infinitely variable feed control that produces the ultimate finish to your woodworking project.