Important purchase and features at a glance. On construction sites and other professional areas, it is impossible to imagine: the rock drill. But especially in the amateur or do-it-yourself area it is used very rarely. With a rotary hammer offers a decisive advantage compared with the conventional drill: not only can drill it offers in addition an always useful and him his mode the name: the hammering action. In this mode, the hammer drill chisel away whole walls, blockades or walls. Hard materials such as concrete or natural stone represent no obstacle here, causing the hammer drill is the all-rounder in the House construction, renovation or smaller remodeling projects.
At drills there are in principle two types: mechanical and pneumatic rotary hammer. These types which can be battery or grid-connected power tools divide. A cordless Rotary Hammer of course has the advantage of being non-wired, recharge it regularly again, what with larger home work projects can be a decisive disadvantage. Pneumatic drills are superior, usually their smaller mechanical brethren in performance and power since their shock impulses are stronger and more force will be deployed by a lower number of strokes. Ultimate criterion for hammer drills is therefore the performance, respectively in hammer mode, but also in the drilling operation, in which the hammer drill is the full drill. Performance depends on the impact energy, in joules is specified and ranges typically from 2 to 3.5 Joule, for one. 2.5 joules sufficient here for the normal use of home work.
Two-course transmissions with at least one drills should be chosen with regard to the speed. The last factor represents the number of strokes, which should be at least 3500 blows per minute. From 4000 strokes per minute, it is here on the safe side. Additional useful features include an individual speed control with the chisel speed can be adjusted, and a device to the Vibration reduction, since a longer hammer operation can produce very strong vibrations, which are transmitted to the whole body. Also a feed device of change of can be useful, because on the hammer drill can be used even more tools and systems will be limited not only to SDS and SDS +. As with any power tool applies also here: the bigger, the more expensive is the device. In this sense should be exactly resolved, before making a purchase which features you really need and in case of doubt seek specialist advice. At the end of another tip for all DIY: should you plan only a small project or want to knock down only a single wall, a buy of a good power tool not worth as a rule. However, you can affordably rent all electric tools in local home improvement stores or appropriate vendors for a small fee for one or more.
