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The difference between hammer drills is not only in their power, but also in the location of the electric motor. It is mandatory to use gloves and goggles during the operation of such a machine. It is also provided with a button that allows the selection of the desired functions and the perforation speed.Ī side handle makes it possible to choose the most suitable angle, so that the effort, on the part of the user, is minimal.
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The electro-mechanical rotary hammer drill works thanks to a mechanical system of blades and springs, and the electro-pneumatic one, with compressed air and pistons (being suitable for large works).
WHAT IS A HAMMER DRILL VS IMPACT DRILL PROFESSIONAL
However, the use of a rotary hammer is contraindicated in the case of materials that crumble easily, such as aerated concrete, brick, ceramics, etc.īeing a powerful tool, it is frequently used to make holes with a large diameter, through which pipes or cables can pass, for demolition works (inside or outside), for removing tiles, concrete tiles, etc.Ī professional hammer drill reaches a power of 10 Joules, but for someone who wants to use such a device, for homework, a hammer drill of 1.5-3 Joules is enough.
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The rotary hammer (electromechanical or electropneumatic) exerts a blow (by a continuous back and forth movement, with a frequency of 10,000 beats per minute), in parallel with the rotary movement of the drilling shaft (drill), which facilitates the penetration of materials hard. In the case of the drilling machine, the perforation is made with the help of serrated discs (like a saw), attached to a mandarin (a piece calibrated for drilling holes), which vibrates the drilling shaft, to cause disintegration of the material in that place. The drill of the rotary hammer, in addition to the rotational movement, also performs a simultaneous impact on the material, whose power is measured in Joule (unit of measurement for mechanical work, named after the physicist who defined it – James Prescott Joule). Until that date, centuries in a row, drilling hard materials was a very tiring job.Ī first solution belonging to the German entrepreneur Wilhelm Emil Fein, considered to be the inventor of the electric drilling machine, manually controlled, but which was not very efficient. In 1932, Bosch launched the first electrically operated rotary hammer. In the 19th century, the German company Flottmann designed and sold drills for mining and the tunnel construction industry. The rotary hammer (rotary hammer / hammer drill / roto-drill) is an electro-portable machine, which is used to drill hard materials, such as concrete, stone, metal, wood. The hammer drill is indispensable in the field of repairs or constructions.
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To date, this type of equipment is in demand on almost any construction site, where it performs a lot of different work. We can safely say that this machine has sufficient versatility, because it can fully replace both an impact drill and a small jackhammer. Multitasking has made the hammer drill indispensable in construction, repair, decoration and other types of work. The hammer drill is an electric machine with a shock mechanism and the possibility of drilling. It is universal, as it combines a number of features of a drill and a jackhammer.