You probably can’t even count the number of times you needed a hole but you couldn’t make it. Maybe you wanted to hang a photo or a picture, or some other interesting thing on your wall. Or you needed a small round hole on your desk but you couldn’t make it!
Cordless rotary hammer – What is it and how it works?
A cordless rotary hammer is a rotary drill that acts the same way a hammer does. When you use this tool your (or better-saying hammer action) causes a short and fast lift that provides quicker drilling with less effort than with a regular hammer. It, in a way, causes pulverization of material.
These tools are also known as hammer drills, rotary drills or combi drills.
Instead of a clutch (regular hammer drills), these hammers have a piston mechanism. Because of this, cordless rotary hammers deliver a more powerful blow. They are extremely powerful so most often you can’t use normal masonry bits on them. Why is this good for? Well, because you can make bigger holes faster. If you have these tools you need to have special bits.
Next, these hammers have a special gearbox filled with oil. This part of the tool is very important because it prolongs working hours despite the extreme power they provide.
Most often problem appears when a bit is worn or when it hits intensified or reinforcing steel. If this happens you have to remove a bit using a special wrench and some force. The bit, when this happens, is very hot so you need to be extra careful and use a cloth or wait until it gets colder.
You shouldn’t use damaged bits, or maybe drills, since, in this case, the effectiveness of your work will not be satisfying and the holes won’t be good.
Good sides of cordless rotary hammers
There are many good sides of these tools. First of all, they are much handier to use.
Next, they are movable and good to use in numerous places. Different kinds of repairmen use these hammers because they are suitable for use in an open space, on buildings, houses. If you need a hole on your fence, for example, this is great stuff.
Cordless rotary hammers are mostly used for plasterboards’ installation or for a montage of doors and windows, fences (yard or balcony).
Hammers of this type are very powerful and very fast. Professional workers can really rely on them for every job to get done quickly and on time. They are especially good for them because they don’t bind them to a restricted area.
You buy them with a charger.
You can use them to drill concrete, wood, plaster boards and even very hard materials such as hardened concrete.
They ensure fast drilling rate and highest efficiency.
The difference between hammer drills and rotary hammers
We should first point out that both hammer drills and rotary drills are a good thing to have whether you need them for masonry or for self-use.
One of the main differences and reasons people decide to buy rotary hammer drills is because they are faster and more important they are more powerful. If you buy one without the cord then you’re way ahead of the others. Why? Well, the answer to this question is simple – you can take them everywhere. They are suitable for areas without reachable electricity.
Next, most rotary hammers have a chuck better for drilling and hammering called SDS chuck.
In masonry, rotary hammers are much more necessary than the regular ones. Yes, you can use a regular drill with a good, strong masonry bit but the effectiveness will be much better with a rotary hammer drill.
We know it can be tricky sometimes to decide which one is better for you so follow these differences. We believe they’ll help you decide easier.
Regular hammer drills provide less powerful impact than rotary hammers. This difference can be really important when you need to drill concrete and make some precise holes. Pros will decide beforehand to buy a rotary hammer drill than the regular one firstly because of their power and because of they last longer.
One more important distinction is that rotary hammers can act as three tools: drill, hammer drill, and hammer.
If you’re not a pro, or you’re working light masonry, like drilling bricks, concrete blocks or plaster, regular hammer drills are just as good as rotary ones. The reason we’re mentioning this is that rotary is mostly more expensive than the regular hammer drills. One advice, even when you use an ordinary hammer drill, try to choose quality bits. This will reduce breakage and make your job easier.
For hardened concrete, it’s better to use rotary hammer drills.
It’s not only drill itself that is important but chuck as well. The type of the chuck very popular today is the so-called SDS-Plus chuck. It has special grooves on the shank that secure the chuck but still allow unhampered moving of the bit.
There are many more differences but these are some of the most important for the people who can’t decide which one is better for them. We hope this short guide helped.
The origin
It’s not really clear when did the first hammer drill appear. It is still being argued about its origin.
It most certainly appeared in the early 20th century.
Germans started mechanical and mass production in 1914 (Fein) and 1932(Bosh). In the States, it appeared in 1935.
The first electro-pneumatic hammer drill was produced by Hilti in 1967.
Independent on the reason you’re buying cordless rotary hammers you need to introduce yourselves well to the thing you’re buying. This means gathering as much information as possible especially when it comes to price. And sure, like with every tool, you should watch out while working. There’s never too much caution.
