Handheld air hammers, or air chisels, are very simple tools that are also easy to operate. How An Air Hammer WorksĪn air hammer works by using the air pressure supplied by a suitable air compressor to operate an oscillating piston, which also drives the tool shaft. In the latter mode, the tool functions just like an air hammer, which also means that you can use your rotary hammer with a chisel, a digging spade, a scaling tool or any similar attachment you want to use for surface preparation and demolition work. Rotary hammers also have multiple modes you can use – you can run it at “drill and hammer” mode, use a “drill only” setting, or even leave out the spinning motion entirely with a “hammer only” mode. This makes them ideal for drilling holes in concrete floors, through masonry walls, and other similar applications. What they lack in speed, they make up in impact power – which works really well on hard, brittle materials like concrete, brick, masonry, and stone.Ī rotary hammer, with the right bit, pulverizes the material and uses the spinning flutes of the drill bit to draw out the dust and debris. Rotary hammers do not spin very fast – in terms of RPM, they significantly lag behind fast-spinning tools like drills, hammer drills, and rotary tools. How A Rotary Hammer WorksĪ rotary hammer works by combining the turning action on the drive shaft with the impact force delivered by a piston, which is powered by the motor or by compressed air. In contrast, both the rotary hammer and air hammer deliver significant amounts of stroke, and they can do this with the powered pistons they are equipped with. Similar tools like the hammer drill use ridged cams to add a minuscule amount of stroke to their drill bits to aid in drilling, too. Other power tools with a hammering action will add the impact of a spinning weight to their torque output, in the case of impact drivers and impact wrenches. Rotary hammers and air hammers direct their impacts parallel to the direction of the tool shaft, and deliver their hammer blows directly to the material itself. Both power tools also make use of a powered oscillating piston, too. While there are pneumatic versions of the rotary hammer, most workshops and garages will have the electrical kind for their own use.Īll those differences aside, both the rotary hammer and the air hammer earn their names from the impact action that they impart on the material they are being used on. Just like it says on the label, you will also find an air chisel tethered to the air compressor required to run it. Air hammers weigh around 3 pounds or so and unlike rotary hammers that are often fitted with drill bits for drilling, an air chisel is usually equipped with any of the wide assortment of tools depending on the task needed at the time. The former is a hefty power tool, which may be battery powered or corded, and is usually fitted with long heavy duty drill bits that make short work of concrete and masonry.Īn air hammer, which is also known as an air chisel, is a much smaller and lighter tool, on the other hand. Few people will really have trouble telling apart a rotary hammer vs an air hammer.
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