How to choose a hammer drill for personal use? Nowadays, buying a branded drilling tool is not a problem, but how to choose the right hammer drill for yourself and your tasks? Explore the punch device and specifications.
Punch device and characteristics
All punchers are divided into three types in terms of functionality:
- Single-mode. Impact drilling function only. Most often, such perforators are not used in everyday life, but are used as professional additional equipment for narrow purposes.
- Dual mode. Hammer drilling plus classic drilling or chiseling only.
- Three-mode. The tool is equipped with all the functions specified in paragraphs 1 and 2.
The choice of a hammer drill is based primarily on the characteristics of power and impact force. The higher these indicators, the better the hammer to be fitted.
Types of working chuck for rock drill:
- Usual;
- Quick-clamping.
Which drill chuck to choose? For household or household chores, the keyless quick-release model is best suited. Changing the nozzle in this version is convenient, easy and quick.
Rock drill classification by weight:
- Lungs. Up to 4 kilograms. Power is no more than 700 watts. Only available with SDS-plus chuck for 26 mm drill bits.
- Average. 4 to 8 kilograms. Power from 700 to 1500 watts. Depending on the equipment, both SDS-plus and SDS-max are equipped.
- Heavy. than 8 kilograms. Power is over 1500 watts. Equipped only with SDS-max chuck for diameter up to 60 mm.
Energy and frequency of impacts
For a hammer drill, the impact function, measured in joules, is very important. The performance of the device, as well as the diameter of the hole to be machined, depends on the impact energy. For daily work with a hammer drill, this is one of the most important indicators.
It is essential that the hammer drill at the maximum will very quickly deplete its resource, and with the hammer drill they perform this work for a long time without wear, especially with the single-mode model.
It turns out that energy and frequency determine the level of performance. When choosing a perforator on your own, you need to evaluate the amount of work on chiselling, then, according to the specified characteristics of the impact frequency, calculate the approximate productivity.
How to choose a hammer drill for personal use?
Choosing the right drilling tool means making home repairs easier for a long time. How can you successfully choose a puncher in order not to overpay for the brand and get high-quality equipment?
Several decades ago, only powerful electric drills equipped with drills for metal and concrete were used in everyday life. A truly branded, specialized tool was sold only abroad; it was impossible to just go to a construction supermarket and choose a suitable device.
What is the difference between a drill and a hammer drill and vice versa
The hammer drill is characterized by a longitudinal axial movement of the working part, similar to an impact drill. Therefore, hammer drills are confused with a heavy drill. In words, there is practically no difference, however, the hammer drill functions on the basis of pneumatics, and any impact (heavy) drill works thanks to mechanics.
Hence the difference in surface speed. Pneumatic drilling of holes in concrete, brick and stone walls reduces physical stress on the user. For any hammer drill, similar work is associated with great fatigue, and the hammer drilling mode wears out the internal components of the drill very quickly.
We come to the conclusion that the hammer drill should be larger and more massive than a drill with an impact function.
Energy and frequency of impacts
For a hammer drill, the impact function, measured in joules, is very important. The performance of the device, as well as the diameter of the hole to be machined, depends on the impact energy. For daily work with a hammer drill, this is one of the most important indicators.
It is essential that the hammer drill at the maximum will very quickly deplete its resource, and with the hammer drill they perform this work for a long time without wear, especially with the single-mode model.
It turns out that energy and frequency determine the level of performance. When choosing a perforator on your own, you need to evaluate the amount of work on chiselling, then, according to the specified characteristics of the impact frequency, calculate the approximate productivity.
Which hammer drill to choose for home
The hammer drill is a very popular power tool in our time, which is used to punch holes in hard metals using a percussion tool. The principle of operation of this device is quite simple: the structure of the processed material is destroyed due to the rotational action of the tool. If you need to purchase this tool, then you probably wondered how to choose a hammer drill? Or maybe it’s better to get a drill? Let’s consider everything in order.
The best hammer drill models
Those users who have experience in the construction industry are sure to have favorites among modern manufacturers. We tried to single out two main brands that are distinguished by high quality production and are in great demand in the construction market in our country, these are Bosch and Hitachi. Which is better to choose: Bosch or Hitachi? Which hammer drill is the most suitable for home use? In order to answer this question, it is worth considering the functionality of each model.
So what makes Bosch special:
- The motor power is 780 W, and the impact force is 2.8 J. This is quite enough for interaction with solid materials. Therefore, if you do not know which perforator to choose for concrete, you can safely purchase this model;
- There are special pads on the handle of the model, which allow you to reduce the force of impact during use and make your work more comfortable;
- The speed of revolutions reaches 3000 per minute;
The model can be used to create holes for the socket and to prepare any kind of mortar.
Now let’s look at the advantages of Hitachi:
- The power of the power tool is 1200 W;
- The frequency of revolutions per minute can be from 120 to 250, depending on the type of construction process;
- For the convenience and safety of the user, the device has a special safety clutch and aluminum protection of the gearbox, which will remove heat;
- The maximum diameter of holes that the tool can make is from 45 to 125 mm.
Compare all of the above characteristics before choosing a hammer drill. For concrete as well as interactions with hard metals, both are excellent options.
Impact drill or hammer drill: what to choose
Much more often, in carrying out construction work, preference is given to a perforator rather than a drill. Why is this happening? After all, the drill has great power and at the same time its weight is several times less. In addition, drill consumables are much cheaper and can be purchased without any problems on the Internet or on the radio market. Then why is it better to choose a hammer drill for the home, rather than a drill?
Note that the drill allows drilling without hammering. However, a blow in a drill is also possible, but this function is auxiliary. At the same time, before choosing a hammer drill for the job, you must understand that its main function is hammer drilling. In a drill, the percussion mechanism is presented in the form of a conventional "ratchet", but in a device with more power, everything is not so simple. After all, the device has both electro-pneumatic and electromechanical principle of impact. In this case, the second option bypasses the drill significantly.
However, don’t underestimate the power of the drill. It is important to understand that this power tool is suited for slightly different uses. If you do not know how to choose a drill with a hammer drill for your home and what to look for when buying, it is worth considering the main advantages of these construction tools.
ZUBR ZP-24-750 K
Powerful and productive, the Zubr ZP-24-750 K perforator will be useful to you during construction and repair work, when you need to drill or chisel in metal, wood or concrete, when you need to lay cable channels in various surfaces.
The limiter will protect from deep embedding of the drill into the surface. Power of 750 W speaks of high productivity Zubr ZP-24-750 K. The 3.15-kg device is comfortable to hold in the hands for quite a long time thanks to the included additional tool handle, which, moreover, contributes to high accuracy of work. The overload clutch and the on / off button lock are responsible for safe operation of the hammer drill.
Hitachi DH22PH
The Hitachi DH22PH hammer drill from the world famous brand is compact. Weighing only 2.1 kg, the tool remains powerful and functional.
A distinctive feature of Hitachi DH22PH is the presence of a system for balancing the internal and external pressure levels, which prevents oil leaks. By equipping this model with the SDS-Plus chuck, the drill is installed in one movement.
With the help of a special key, which is located on the side, you can fix the selected mode for continuous work. The grip with a stop will prevent the tool from falling out of your hands during operation. The HITACHI DH22PH model is equipped with an external and internal pressure balancing system. This helps to avoid oil leaks. The valve gradually equalizes the excess pressure in the reducer arising from excessive temperatures.
Interskol P-26 / 800ER NEW
Perforator INTERSKOL P-26 / 800ER has a number of advantages, including high productivity of the tool and reliable design.
The maximum impact energy of the Interskol P-26 / 800ER perforator, which is made of modern materials, in a durable case with an SDS-plus cartridge, is 3 J. It is distinguished by high efficiency due to its power reaching 800 W. At the same time, it is characterized by an insignificant level of vibration. It functions in three modes.
The 800-watt power of the device allows it to make 5400 blows in just one minute of continuous operation. The maximum number of idle rotations is 1250 revolutions in 60 seconds.
Differs in a well thought out security system. A safety clutch will protect the operator from injuries in case of possible jamming. It will also save tool parts from breakdowns. The model is equipped with an additional handle and a four-meter cord in rubber insulation, which does not undergo deformation at low temperatures. Easy to transport due to the elegant case.
The best rotary hammers for home
Since home drills are purchased for periodic and often short-term work, the requirements for them are corresponding:
- The device should be compact enough not to take up much space during storage;
- Power sufficient at least for short-term work on solid concrete;
- Reliability (the ability to periodically work in wear mode), you can not use the perforator for several months, and then start a full-fledged repair;
- The presence of additional functions mode switch, reverse, speed control, all of them will come in handy in any case.
All devices included in the rating of hammer drills for the home must meet the listed requirements.
| Bosch GBH 2-26 DFR | Makita HR2470 | AEG KH 24 XE | |
| Shank type | SDS-Plus | SDS-Plus | SDS-Plus |
| Number of modes | 3 | 3 | 3 |
| Impact force, J | 2.7 | 2.7 | 2,3 |
| Power consumption, W | 800 | 780 | 720 |
| Maximum drilling diameter in concrete, bit / drill, mm | 68/26 | 54/24 | 50/24 |
| Maximum drilling diameter in wood, mm | thirty | 32 | thirty |
| Maximum drilling diameter in metal, mm | 13 | 13 | 13 |
| Reverse type | by turning the brushes | by turning the brushes | electronic |
| Safety clutch | |||
| Speed regulator | |||
| Spindle speed, rpm / min. | 0.900 | 0.1100 | 0.100 |
| The frequency of beats per minute, beats / min. | 0.4000 | 0.4500 | 0.4500 |
| Drill chuck included | |||
| Weight, kg | 2.9 | 2.6 | 2.6 |
Rock drill rating by reliability comparison of the best models for home and professional use
Bosch GBH 2-26 DFR
The device, which the manufacturer itself positions as a model of the Professional class, which shows its ability to long-term continuous operation. Its 800 watt electric motor produces 900 rpm, with the possibility of electronically adjusting their frequency, and there is also a reverse function. In punch mode, 4000 blows are made on the working surface for a minute, but the device can also be used as a drill or screwdriver. An adapter for conventional drills is included in the kit. Drills with a diameter of up to 26 mm are used.
Pros of Bosch GBH 2-26 DFR
- There is no ruler on the depth gauge.
- The drill chuck does not tolerate the adhesion of concrete dust; it is advisable to store it in appropriate conditions.
- Expensive to renovate. If the hammer drill breaks down and this is not a warranty case, then the repair will not always be advisable.