Floor sander has rotating sanding units, e.g. sander disks, mounted on arms which rotate about central hub, direction of rotation of disks being opposite to that of arms

摘要

The floor sander has rotating sanding units (5- 7), e.g. sander disks, mounted on arms (2-4) which rotate about a central hub (1). The direction of rotation of the disks is opposite to that of the arms.