![]() ![]() Impact Drill/Driver: Stubbier with a short head. Rotary Hammer Drills: Bulkier in size and weighs more. Hammer Drill: Similar to regular power drill/driver. An impact driver does not have a chuck, instead has a hexagonal socket that you can place hex-shaped driver bits into. The rotary hammer drills, which are much more powerful, usually come with SDS chucks. On the other hand, impact drivers tend to be stubbier, especially around the barrel.Īnother key difference is that hammer drills have a 3-jaw chuck (for those who are unfamiliar with the term, a chuck is essentially the front part of the drill, where bits are held). ![]() Hammer drills have a longer barrel and are just bigger in general. In terms of appearance, the two drills look similar, but upon closer inspection, you will notice some key differences. Impact driver: Loosen jammed screws, nuts, bolts. Hammer Drill: For drilling concrete, brick and masonry work. If you just need to drill into wood, just go for a regular, inexpensive power drill. Both kinds of drills can be used to drill into lighter materials like wood, but that really isn’t the main reason you buy one of these drills. You use an impact driver when you want to rusted or over-torqued screws and to drive screws into a tough material. You will go for a hammer drill when you need to drill holes into tough materials like concrete. The main difference between a hammer drill and an impact driver is what they are used for. The hammer drill and impact driver differ in three key aspects the purpose, design, and working principle. ![]() Differences between Hammer Drill and Impact Drill Because it uses both rotary power and percussion power, an impact driver is sort of a mixture of both a hammer drill and a regular power drill. This means that impact drivers can be used on bigger or longer screws/fasteners/bolts that a regular cordless drill won’t be able to drive in. The hammering action primarily takes place in the direction of rotation resulting in higher torque output. When the maximum force provided by the motor is not sufficient, the hammering mechanism actuates. However, what sets impact drill/driver apart from regular power drills is that they can also use percussive power to drive screws or fasteners forward. In this sense, they operate a lot like any other power drill or driver. When they are used on smaller and lighter screws, the impact driver will use the rotary power of the motor to drive the screw forward. In terms of how they operate, impact drivers have two methods for driving screws or fasteners into the material. They can also be used to drill holes, hence the name Impact Drill/Driver. The purpose of an impact driver is to loosen or drive fasteners, screws, and bolts into the material. Impact drills which are commonly known as impact drivers, fulfill a completely different role when compared with hammer drills. In terms of what they are meant to do, hammer drills are meant to make holes in tough materials they can also drive fasteners into the concrete. It is this internal mechanism that allows a hammer drill to pulverize its way through concrete and masonry. Inside each hammer drill, a hammering mechanism (the exact mechanism can change depending on the type of hammer drill) essentially “pounds” the drill bit forward. Although there is variation between different kinds of hammer drills, generally speaking, they all operate roughly the same. There are mainly two types of hammer drill the regular hammer drill and the more powerful rotary hammers. Hammer drills fulfill a very specific role, which is to pulverize holes in concrete, brick, marble, granite, and other similar materials. Regular hammer drills are slightly bigger than drill/driver. Hammering action in the direction of rotation. Hammering blows in the direction of the hole being drilled. Loosen or drive in screws that require high torque. ![]()
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