Hammer drill or rotary hammer

What to choose: impact drill or drill on what characteristics you should pay attention to? With each passing day it became clearer, and the need for this grew like a snowball. It was necessary to drill a couple of dozen holes in walls, ceilings and floors, available punch and a hammer did not please daunting job. Who among us has not experienced a similar problem? And when we come into the store, we have to make "difficult" choice between the impact drill and hammer. What to choose: impact drill or drill on what characteristics you should pay attention to? With each passing day it became clearer, and the need for this grew like a snowball. It was necessary to drill a couple of dozen holes in walls, ceilings and floors, available punch and a hammer did not please daunting job. Who among us has not experienced a similar problem? And when we come into the store, we have to make "difficult" choice between the impact drill and hammer. Looking at the stands in the big stores selling the tool, we can see dozens of titles that are similar in properties "stenoprobivnyh machines." And what brands: "BOSCH", "DEWALT", "BLACK & DECKER", "MAKITA", and other equally worthy producers. But what if we need one, and preferably for all occasions. Let's talk first about the basic technical specifications: - Rated power - it is clear that the more power the better you will do any job - the rotational speed at idle (speed) - the diameter of the holes formed by different materials in the regime with a bang. But the majority of manufactured today drills Percussion drills and have other interesting features: - adjustable speed - the speed depends on the strength of either clicking on the Start button, or put on a special disk controller - there are models with which he selects and maintains the optimum speed, depending on your choice of type of material and some of his own diameter drill - the trigger lock button in the operating position - reverse - the ability to rotate the bit in both directions, it is convenient if you need to unscrew the screw, and when the bit gets stuck in processed materials. Principles of impact drill and perforator principle punched holes through impact drill is that the rotation and shock action on the drill is transmitted from the two in contact ratchets, and the amplitude of the impact is small, which greatly reduces its efficiency, increasing the force with which to pressure on the tool and vibration. There are two speed drills impactor, on the basis of their mechanism can be compared with an automatic car, due to this they are more efficiently use power tools. Within the same punch is an electromechanical or electro-pneumatic hammer mechanism, which itself produces a shock, it remains only to press a button. When working with the hammer you need not make an effort. When working with hard materials drill more durable. Consider for a start on all sides hammer drill. All long familiar form in the form of a pistol, a metal collet chuck. Capacity ranges from 400 to 1200W. The possibility of controlling the speed of rotation to 3500ob/min, switch to "boring" / "slotting" button, the trigger lock in position. Here is a "gentlemen's set, which can be found in hammer drills all major manufacturers. What of the above can be squeezed? - The possibility of drilling holes in metal, wood, masonry, and for drilling in concrete requires the most powerful tool of the lineup virtually every company - at low speed and the respective nozzles conveniently turn the screws, wood screws, tapping screws - with additional devices, you can use percussion drill as grinder, grinders, stationary drill. Of course, the greater the power impact drill, the easier it is to punch a hole of the greatest diameter, but at the same time increases the weight of the tool. For example, at one and the same manufacturer, with the power to 400W Percussion Drill can weigh 1.4 kg, and at 900W - is 2,5 kg. In terms of reliability, quality tool for the above companies is not in doubt. With proper operation (constant short-term work to 40c, quality sharp drill as in wood and metal, and concrete and brick, the account of weather conditions, such as work tool, brought in from the cold, to begin not earlier than 1,5-2 hours) will last you a long time. Now let us turn our gaze to the more powerful 800 to 1500W, heavy 2 to 11kg punchers. In contrast to the percussion drill, they are more bulky, the engine is at the drills can be located either horizontally (the form in the form of a pistol) and vertically (in the more powerful models). Have SDS chuck (to change the drill bit, enough to delay the cartridge itself) and the corresponding tooling. Puncher you'll appreciate if you have to drill holes in solid materials: for example, reinforced concrete or stone, they can drill large holes, with hole punch you can easily make a small hole in a solid wall or floor. A professional punchers can be replaced and a jackhammer. The technical characteristics of the perforators indicated power (energy) impact and frequency of beats per minute. The first ranges from 2,2 to 3Dzh, and professional punch, for example, from 2 to 10Dzh or 5 to 18Dzh. The second depends on the power and can be 4 4,5 thousand beats per minute in less powerful and 2 of 3000 beats per minute for the more powerful. Usually there are two modes of drilling and chiselling, but sometimes there is also a combined mode. To punch a low power is possible to regulate the speed and, therefore, possible to use it as a screwdriver. But since large than the impact drill size, it becomes more laborious. It should be noted that due to the design of the perforator, the passage of one centimeter deep into the concrete wall several times faster than the impact drill. During the work is not recommended to put pressure on the tool, put the mark, press the button and he will do everything himself. In the case of a suitable perforate the expression "like a hot knife through butter." So what did you choose? Largely it depends on your desires and upcoming works. But, for example, if you are able to collect and hangs in his home kitchen and a couple of pictures, then, of course, choose a percussion drill. If you just moved into a new apartment, and will: Stroebe wall, cut the jambs, hollow floor, clearly you need a hammer. Without significance, and also the economic factor, as more of a shock hammer drill of the same company at about half. Jackbits also more expensive than the impact drill. Regarding the choice of professional or household tools, the main difference between them is that the professional tool designed for serious permanent loads, and household - for occasional use. Oquinn same front view of forthcoming works, take a look inside her purse, and go for the tool you need. instrumenton.net