Air-Powered Random Orbital Disc Sanders Air-powered random orbital disc sanders spin a round sanding pad and whirl it in an orbital motion to minimize swirl marks and cross-grain scratches. Also known as dual action (DA) sanders, they are commonly used on large, flat surfaces and require only light pressure since the eccentric motion of the pad does most of the work. They perform a range of sanding tasks, from paint stripping to finishing—depending on their orbit diameter, the grit of the sanding disc, and the density of the backing pad. These pneumatic orbital disc sanders operate on compressed air and contain few moving parts, so they are lightweight to ease handling, run cool for a long lifespan, and require minimal maintenance.Get more news about oem pneumatic orbital sander,you can vist our website! Non-vacuum random orbital sanders perform sanding at industrial and construction sites that have a separate dust mitigation or collection system or don't require removal of dust and swarf. They require clearing of dust from workpieces during sanding and from floors and equipment after sanding. Self-vacuum random orbital sanders create suction to draw dust and swarf through their vacuum port and into a separate collection bag or container attached to the port. Also known as self-generated vacuum sanders, they collect dust to reduce respiratory hazards and prevent buildup on surfaces and equipment. Dust collection also decreases clogging of abrasives to extend their life and keeps workpieces free of dust that can cause swirl marks or other imperfections. Central vacuum random orbital sanders connect to external portable or fixed dust extractors and collection systems that create suction to draw in dust and swarf. They enable dust collection to reduce respiratory hazards and prevent buildup on surfaces and equipment. Dust collection also decreases clogging of abrasives to extend their life and keeps workpieces free of dust that can cause swirl marks or other imperfections.