When drilling concrete or even just brick, it is very difficult to do without an impact drill: the edge of the drill will not capture the work surface and almost all revolutions will go idle. The right option in this case is special equipment. But buying a full-fledged hammer for your home is not very practical. The tool is highly specialized and may be needed only occasionally.
As an alternative, you should pay attention to impact screwdrivers: they are more versatile, less overall, and sometimes noticeably cheaper than rotary hammers. Yes, they have fewer specific features, but much more practicality.
To begin with, we will understand what is the cardinal difference between punchers and impact screwdrivers. This will help to clearly determine what you really need - the first or second.
Features of the technique
The puncher mechanism accelerates the firing pin inside the structure back and forth and constantly hammering the surface (photo below). The screwdriver device is built on the principle of a ratchet, where the internal spindle pushes the cartridge forward with a small amplitude.
That is, the punch works due to the inertial force of the internal mechanisms, while the hammer drill must constantly lean on. The efficiency of the first and second options is very different not for the better for the latter. Despite this, impact screwdrivers are more effective than simple standalone drills without this mechanism, so there is a reason to buy such a technique. Of course, if it is again about the everyday use of the tool, and not about the industrial one.
So, let's look at some of the best impact screwdrivers who have distinguished themselves by the efficiency of their work, quality component and positive feedback from experts and ordinary users.
Metabo BS 18 LTX Impuls
As a screwdriver, the model boasts good speeds - up to 110 Newton meters. The “Impulse” mode will be an excellent tool for unscrewing problematic and sour bolts. A 4 A / h lithium-ion battery acts as a battery, which is a good compromise between dimensions and charging frequency.
The impact driver works quietly in two main modes at 500 and 1700 rpm. It can be used for a long time and for almost any specific purpose. As for the shock mode, the model fully justifies its high cost. The screwdriver copes well with concrete and sometimes passes where some budget punch is completely stuck.
Model Features
Ergonomics of the model also did not disappoint. Judging by the reviews on the Metabo impact screwdriver, the device sits like a glove in its hand, and thanks to its sensible and high-quality coating on the bed, it does not try to slip out. All controls are logical and conveniently located, so there are no problems with fast switching modes.
Estimated cost - about 25,000 rubles.
DeWALT DCD937P2
The branded coloring of the drill attracts on the counter the views of professionals who know that the money, and considerable, paid for the brand's equipment, is paying off with interest. The model was largely successful, and the designers decided in this series to abandon the usual brush mechanism.
Such a solution allowed not only to significantly reduce the power consumption of the drill, but also to increase the operational resource. Similar mechanisms are supplied with finicky and often out of order brushes, but here they simply are not. You can also add a powerful five-ampere battery to this, as well as a long battery life.
The model’s twisting moment is slightly less than that of “Metabo” - 75 Newton meters, but the screwdriver for the most part takes tenacity, coping well with bricks and concrete walls. The only drawback that users consider critical in their reviews is the strong vibration of the instrument. The other mechanical principle of shock is to blame for this: the brushes to some extent damped the vibration and it gave less to the hand.
Estimated cost - about 22,000 rubles.
Bosch GSB 18-2-LI
The past models of the series have proven themselves in everyday life, and the new device has become another work on errors, where the manufacturer, as they say, has taken into account and subtracted a lot. Yes, a screwdriver can not compare with capabilities and functionality with more noble similar devices from the premium segment, but he finds his buyer value and quality.
The maximum torque of the model is 63 Newton meters. In shock mode, this is enough for drilling bricks, hardened cement and other not very picky surfaces, but here the “kid” stumbles on high-quality concrete, and seriously.
As for battery life, the model is not far from its usual counterparts, so you will need to take care of buying an additional battery in advance. The latter for some reason is not included in the kit, for which the owners in their reviews often blame this screwdriver.
Estimated price - about 7000 rubles.