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 to waste. The correct option in this case is special equipment. But buying a full-fledged puncher for the home is not very practical. The tool is highly specialized and may be needed only occasionally.
Alternatively, you should pay attention to impact screwdrivers: they are more versatile, smaller, and sometimes much cheaper than rotary hammers. Yes, they have fewer specific features, but much more practicality.
To begin with, let's figure out what is the fundamental difference between hammer drills and impact screwdrivers. This will help to clearly define what you really need - the first or second.
Features of technology
The mechanism of the perforator accelerates the striker inside the structure back and forth and constantly hammers the surface (photo below). The device of the impact driver is built on the principle of a ratchet, where the internal spindle pushes the chuck forward with a small amplitude.
That is, the punch works due to the inertial force of the internalmechanisms, while the impact drill must be constantly leaned on. The efficiency of the first and second options is very different, not for the better for the latter. Despite this, impact drivers are more efficient than simple standalone drills without this mechanism, so it makes sense to buy such equipment. Of course, if we are again talking about the domestic use of the tool, and not about the industrial one.
So, let's look at some of the best impact drivers that have distinguished themselves by their efficiency, quality component and positive feedback from experts and ordinary users.
Metabo BS 18 LTX Impulse
As a screwdriver, the model boasts good speed - up to 110 newton meters. The “Impulse” mode will be an excellent tool for unscrewing problematic and soured bolts. The battery is a 4 Ah lithium-ion battery, which is a good compromise between size and charging frequency.
Impact screwdriver 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 does a good job with concrete and sometimes goes where some budget hammer will completely stall.
Features of the model
Ergonomics of the model also did not let us down. Judging by the reviews on the Metabo impact screwdriver, the device sits like a glove in the hand, and thanks to the sensible andhigh-quality coating of the bed does not try to slip out. All controls are logically and conveniently located, so there are no problems with quick switching between modes either.
Estimated cost is about 25,000 rubles.
DeWALT DCD937P2
Branded coloring of the drill attracts the views of professionals on the counter, who know that money, and a lot of money, paid for brand equipment is more than paid off. The model turned out to be largely successful, and the designers decided to abandon the usual brush mechanism in this series.
This solution allowed not only to significantly reduce the energy consumption of the drill, but also to increase the operational life. Similar mechanisms are supplied with fastidious and often failing brushes, but here they simply do not exist. You can also add a powerful five-amp battery here, as well as a long battery life.
The torque of the model is slightly less than that of the Metabo - 75 Newton meters, but the screwdriver for the most part takes persistence, coping well with both bricks and concrete walls. The only drawback that users consider critical in their reviews is the strong vibration of the tool. A different mechanical principle of impact is to blame for this: the brushes dampened the vibration to some extent and it gave less to the hand.
Estimated cost is about 22,000 rubles.
Bosch GSB 18-2-LI
The previous models of the series have proven themselves in everyday life, and the new device has become another work onmistakes, where the manufacturer, as they say, took into account and subtracted a lot. Yes, a screwdriver cannot match the capabilities and functionality of more noble similar devices from the premium segment, but it finds its buyer in value and quality.
The model has a maximum torque of 63 Nm. In shock mode, this is quite enough for drilling bricks, hardened cement and other not particularly fastidious surfaces, but on high-quality concrete, the “kid” stumbles, and seriously.
As for the 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. For some reason, the latter is not included in the kit, for which the owners often blame this screwdriver in their reviews.
Estimated price is about 7,000 rubles.
