Demolition hammer for repair

Perhaps every homeowner sooner or later has a desire to redevelop. Expand the kitchen, combine a couple of rooms, make a wide arch in place of a narrow doorway, etc. The master takes the puncher and … sometimes the redevelopment ends there, because the performance of the puncher in dismantling the walls turns out to be depressingly low – especially if they are reinforced concrete or at least qualitatively built. We need a more powerful tool.

What are “chippers” and what are they used for?
The pneumatic jackhammer is familiar to everyone: Think of dusty workers smashing the asphalt with a hefty iron thing hooked up to a snarling compressor the size of a subcompact car.

Not all pneumatic jackhammers are like that (there are models that are much lighter and more compact), but it is not without reason that most workers on the streets use this type of tool. Pneumatic jackhammers are much lighter than their electrical counterparts at the same power (no motor), are not afraid of dust and moisture, do not fail under extreme loads and jammed equipment. For professional use, pneumatic breakers may be the best choice.

But not always. To operate a pneumatic tool, a compressor is required, which imposes certain restrictions on the place of work and on mobility. In many ways, the gasoline “bump stop” is more convenient: it is not “tied” either to the compressor or to the outlet.

True, it is heavier and noisier than its “brothers”, and it is not cheap, so this tool is also more often acquired by professionals.

The electric jackhammer is perhaps the most suitable tool for indoor work. It is mobile, inexpensive, easy to use, quite lightweight and quiet (as far as is generally applicable to jackhammers). In addition, the range of electric models is quite large. Among them there are “chippers” for any kind of work, both for a professional and for an amateur.
















It is not surprising that the electric jackhammer is most often chosen for the repair of premises.

What to look for
The main characteristic of the jackhammer is the impact energy , reaching 70-80 J. This is the main difference between the “hammer” and the perforator – in the latter it rarely exceeds 10 J. For chipping or drilling walls, such an impact force is quite enough and when choosing a perforator they come to the fore other parameters. But for a jackhammer, this parameter uniquely determines the scope.

For dismantling of concrete slabs and supporting brick walls require 15-35 George . Typically, this is the tool that is used for large-scale apartment remodeling – it is light enough to keep it suspended, but powerful enough to cope with most of the tasks that arise during renovation.

Demolition hammers with impact energies above 60 Joules will tackle any obstacle, including high-quality reinforced concrete (such as floor beams) and hard rock.

It would seem that there is nothing to think about – it is necessary to take the model with the highest impact energy! Alas, the impact energy is directly related to another important characteristic of the instrument – its weight . “Chippers” 50 J and more weigh 20 kg and it is rather tedious to work with them. And only heavyweight athletes will be able to dismantle the walls while holding the instrument “in the air”.

The lighter the tool, the more comfortable it is for them to work, so you should not choose a “bump stop”, the impact force of which will be much more than you need. In any case, for long-term work “on the weight” (chipping, arrangement of windows and openings, breaking thin partitions), it is better to take models weighing no more than 6 kg .

When dismantling thick walls, you can use models weighing 6-10 kg : a thick wall takes some of the weight on itself and the load on the hands is reduced.

Demolition Hammer Makita HM1203C

Well, models weighing more than 10 kg are mainly used for working in a vertical position, with an emphasis on the surface to be dismantled. The power can be paid attention to in the third place. So, among several tools that are suitable for you in terms of impact energy and weight, it is better to choose with more power – it is more likely to provide the declared impact force.

Likewise with the impact rate : all other things being equal, higher frequency will slightly increase performance. But just that slightly – do not expect that the model with 2000 bpm will be a quarter more productive than the model with 1500 bpm. Most likely, you will not notice the difference.

Which cartridge is better – SDS-max or HEX?

In general, no difference. As a rule, the chuck is selected according to the power of the tool and does not have much effect on the work. Although a couple of nuances can be noted:

The SDS-plus tool is not a jackhammer, but a rotary hammer. The mount is too thin for serious demolition work.
SDS-HEX has nothing to do with SDS and the author of this standard, Bosch, has nothing to do with it. It’s just that some manufacturers (DeWalt, Makita) started making their picks with a cut for better fixation. At the same time, the “bumpers” worked quietly both with their “own” peaks with a cut, and with ordinary hexagonal ones. SDS-HEX appeared at the suggestion of Chinese manufacturers, who for some reason decided to isolate such a mount. And now not all models with SDS-HEX chuck allow the installation of conventional hexagonal lances.
Life hacks when working with a jackhammer
The tool vibrates a lot (especially on hard materials). It is recommended to work with it with anti-vibration gloves.

Better yet, choose a model with an anti-vibration system right away .

The jackhammer makes NOISE! Use headphones or ear plugs.

Lubricate the lance shank before turning on the tool. This will extend the life of the piqué and patron. It is better to use a special lubricant (it does not liquefy from high temperatures), but you can just use lithol.

Do not overload the tool, it works more efficiently when it presses on the material only with its own weight.

Do not bury the lance deeply into the material and do not try to chip off large pieces at once – otherwise, the lance may jam.

Did you know that the jackhammer can also be used successfully for compacting sand and hammering posts with the help of ramming attachments?