This is done by the impeller wheel that freely turns on the motor shaft located in the sander. The two sides of the impeller wheel house two groups of blades. One joins with the airway for supplying the motor with compressed air, that is used for directing at least one air jet against one group of the blades on the wheel.
The other group of blades, on the other side of the wheel, is designed for producing a dust/air current for clearing sanding dust from the pad. For this purpose a dust port is present, extending from the pad to a position near inner ends of the second group of blades.
Air-powered technology for sanders is present in many types of sanders including orbital sanders. Sanders are supplied with a self-contained dust collection system to effectively trap and contain airborne particles. There are some that can be attached to a central vacuum system to a swivel hose for efficient evacuation of dust and debris.
Air Powered Sanders Reviews
