Good Hammer Drill For Professional Work
How to choose a puncher. Criteria for choosing a hammer drill for home or permanent work
When renovating or building a house, a hammer drill is one of the most needed tools. With the advent of this device, which can withstand significant loads, it has become easier and more comfortable to work. The choice of such devices is huge today. every tool manufacturer offers them.
But how to choose a hammer drill that will be of high quality, convenient and will last a long time. This question is quite justified. after all, when buying, you will have to spend a rather large amount. This pleasure cannot be called too cheap. To make the right choice, you need to know the principle of the hammer drill and its design features. Let’s consider all this in detail to find out how different models of such devices differ from each other.
Spindle speed
The rotational speed of the punch shaft is lower than that of the drill. this has already been mentioned above. Depending on the class of the device, the value of this value can be from 600 to 1500 rpm. The rotational speed decreases with increasing power and productivity of the rock drill. this is due to its design features. Indeed, in productive models, the optimum tooling diameter is quite large. In general, the shaft of the device rotates only in order to remove dust after drilling. A small drill has to rotate faster, and a large one. slower, otherwise it will wear out too quickly.
Models of rotary hammers with high shaft rotation speed are heavy, which does not facilitate ease of use. In addition, such high-speed devices wear out very quickly the spiral grooves, with the help of which the drilling waste is removed from the place of work. Because of this, the device starts to get pretty hot, and as a result, it can even jam in the hole.
Punch operating modes
Now let’s take a closer look at how the perforators with different numbers of operating modes differ from each other. So:
The simplest devices are single-mode. They work in the same way as an ordinary drill. If you have to drill wood and metal surfaces, then they are quite suitable.
In a dual-mode device, the axis is capable of not only rotating, but also oscillating during rotation.
The three-mode hammer drill as an additional function has the ability to strike without spindle rotation. Such a device is the most versatile, it can simply drill, drill and chisel and just chisel.
The variety of rock drill models suggests that each of them can have different modifications. over, they can be performed with one, two or three operating modes. If we talk about the latter option, then it certainly costs more. But if you have to carry out work, both on drilling, so on drilling and crushing, then you definitely need to stop at a three-mode device.
When choosing a device, both its shape and design play an important role. Holding the device in your hand, you need to feel that it will be convenient to work with it. At the same time, pay attention to whether there are side handles that can be easily removed. great if this option is provided. It will help if you have to drill in a tight corner, for example. He took off the handles. and work with all the convenience.
Impact frequency
If we calculate how many times in one minute the piston of the device strikes against its firing pin, we get a value called the frequency of strikes. The larger it is, the higher the hole punching speed. The performance of a rock drill depends on both the frequency and the energy of the impact. The manufacturers that produce the most durable and efficient devices harmoniously combine these two parameters in their models.
Therefore, it is better to pay attention to reliable brands, whose products are distinguished by excellent quality and amazing durability. Specifically, we will talk about the best manufacturers a little further.
Additional functions
So, for example, protection against dust does not hurt at all. after all, hardly anyone has to work in sterile conditions.
Dust protection during drilling.
No less convenient is the anti-vibration system, which softens and compensates for the shaking of the device when drilling, chiselling or drilling.
Vibration protection system.
Another useful “trick” is the locking button that secures the punch in working mode.
True, each of the additional features does not make the device cheaper at all, so choose only what you really need. It is not worth it, really, to overpay for those functions that you will never use in the future.
Drill chuck type
The most common are 3 drill attachment systems. If you need a small hammer drill weighing up to 4 kg, it is better to choose the model with the SDS plus fastening system. Such a device can make holes with a diameter of no more than 3 centimeters. Usually, this is quite enough for domestic needs, and such perforators are most in demand by buyers.
Professional models, sometimes weighing up to 11 kilograms, are equipped with an SDS max drill attachment system. These devices are quite large in size. However, they can also punch rather big holes. up to 5.2 centimeters.
Two types of mounting, left SDS Plus, right SDS Max.
Recently, another type of fastening has been used. SDS-top. It is well suited for making holes with a diameter of 1.6 to 2.5 centimeters. This mount is often used in devices manufactured by Bosch.
Impact energy
Impact energy is one of the main parameters of the device. Joules are used to measure it. Lightweight models have an impact force of no more than 1–2 joules, while “heavier” punches can hit with a force of 8 to 15 joules. The greater the impact energy, the larger the hole diameter can be obtained. When this value is small enough, the device does not work more efficiently than an impact drill. In this case, he will not punch a hole, but drill it. As a result, its equipment will wear out extremely quickly, and you will not have to dream of high performance.
You should be aware that a value of this parameter exceeding 10 joules will lead to rapid failure of your instrument. Indeed, under such high loads, its refractory inserts will collapse in a very short period of time.
And yet: household model or professional?
expensive and powerful professional devices are equipped with many functions. They are reliable and durable. It is easy to distinguish them: as a rule, all manufacturers’ models for professional use are painted in a different color than household ones. And there are corresponding inscriptions on them. But the most important difference between them is the time of continuous work, which in terms of duration is 7. 8 hours, i.e. the whole working day. However, why at home is a heavy and bulky device for the “pros”? Super tasks, as a rule, do not have to be performed, and for the most ordinary repair or hanging shelves, a middle class model is quite enough.
Let’s list the optimal characteristics of a hammer drill that you plan to use for home use. With similar parameters, you can easily and quickly drill holes in concrete with a diameter of 1.6 to 2.8 centimeters, as well as perform other types of work. So, a good hammer drill has the following parameters:
- Power. from 0.5 to 0.9 kilowatts.
- Impact force. from 1.2 to 2.2 joules.
- Operating modes. three (except for drilling, also chiselling and drilling).
- Shaft speed adjustment.
- There must be a protective sleeve. it will protect the device from jamming.
- The drill must be secured with SDS plus. no wrenches required to clamp or unclamp the chuck.
Then see for yourself. hold the tool in your hands, try to make a test hole. If you feel that it will be convenient to work, take it. Of course, the hammer drill should be suitable for your application. Just keep in mind that when performing these tasks, the device must be handled carefully. on this below.
Perforator complete set
Now let’s talk about the complete set of the perforator. the more complete it is, the fewer devices you will have to buy later. So, what should be in the case along with the device:
Spare brushes for the electric motor.
The special chuck, which is an adapter, will help you use conventional drill bits instead of keyless bits. After all, perforating drills are more expensive, and in the absence of such a cartridge, you will have to spend a lot.
Boers are the main kit. For domestic needs it is more than enough, but professional models need a more impressive set.
16. Interskol PA-10 / 14.4R-2. 7529₽
The modest capabilities of the PA-10 / 14.4R cordless hammer drill (drilling with and without impact) are compensated by the minimum dimensions and sufficient impact energy. According to practicing professionals, this combination of performance characteristics allows for quality holes in wood, metal and concrete.
- A pair of batteries will be enough to work without long interruptions for recharging (the potential of one is 25 holes 8×50 mm).
- The electronic motor brake prevents the drill or drill from coasting. Stopping rotation at the moment when the master releases the trigger.
- Illumination helps you see possible drilling errors in poorly lit or hard-to-reach places.
- Three-section indicator shows the current battery level.
- The convenient shape of the punch allows you to place it in a belt holster.
All devices necessary for the full operation of the PA-10 / 14.4R-2 are placed in a small case. Therefore, users have no problems with either storing or transporting the cordless tool.
| Weight, kg | 1.4 |
| Drill fixation option | SDS |
| Operating modes | Drilling, hammer drilling |
| Impact force, J | 0.9 |
| Impact frequency at xx, beats / min | 5400 |
| Shaft rotation speed at xx, rpm | 750 |
| Drilling wood / metal / concrete, mm | 20/10/10 |
| Add. Functions | Reverse, electronic engine speed control, backlight, charge indicator |
| Battery voltage, V | 14.4 |
| Capacity, A / h | 1.3 |
| A type | Detachable, Li-Ion technology |
| Charging time, h | 1 |
| Origin development / of. Production | Russia / China |
| Price, rub. | 7529 |
14. Hitachi DH24PC3. 8876₽
Professionals say that the accuracy of the Hitachi dh24pc3 rotary hammer is ensured not only by the simultaneous increase in the impact frequency and shaft rotation speed.
- Correct tool balancing
- Light weight
- Ergonomic rubber grips
- Convenient control of three operating modes and reverse function,
Also have a significant impact on the precision of the workflow.
The absence of any drills or additional cartridges in the package is another point that indicates that the rock drill is intended for professional use. All the necessary equipment is always purchased for a specific type of work. Therefore, the Hitachi dh24pc3 is equipped with only a spacious suitcase, an additional handle and a drilling depth stop.
| Weight, kg | 2.6 |
| Drill fixation option | SDS |
| Operating modes | Drilling with and without hammering, chiselling |
| Impact force, J | 3.2 |
| Impact frequency at xx, beats / min | 4600 |
| Shaft rotation speed at xx, rpm | 1150 |
| Power consumption, W | 800 |
| Drilling wood / metal / concrete, mm | 32/13/24 |
| Add. Functions | Safety clutch, reverse, electronic speed control |
| Power cable length, m | 4 |
| Origin development / of. Production | Japan / Japan, China |
| Price, rub.) | 8876 |
Bison ZP 900 EC. 5100₽
Based on the design features and due to the set of implemented technologies, the Zubr ZP 900 EK perforator is considered to be an analogue of expensive professional equipment. After all, there is everything that is somehow implemented in a branded tool.
- Keyless chuck (SDS) with dust protection,
- Impact mechanism metal case,
- Sophisticated anti-vibration system,
- Handles are made of materials that prevent the tool from slipping during operation,
- 3 standard operating modes,
Reinforced by a 5 with a small weight and a vertical position of the electric motor, the ZP 900 EK is brought to the level of a good household tool. Even with a claim to professional exploitation. Indeed, for this model, the loads are not critical either when working with a drill with a diameter of up to 28 mm, or with shock-free crowns, or in the process of chipping.
| Weight, kg | 5.4 |
| Drill fixation option | SDS |
| Operating modes | Chiseling, drilling, hammer drilling |
| Impact force, J | 4 |
| Impact frequency at xx, beats / min | 2600 |
| Shaft rotation speed at xx, rpm | 0-700 |
| Power consumption, W | 900 |
| Drilling wood / metal / concrete, mm | 30/13/28 |
| Add. Functions | Safety clutch, active vibration-reducing system |
| Power cable length, m | 2 |
| Origin development / of. Production | Russia, Russia |
| Price, rub. | 5100 |
Professional tool. precision and comfort at work
The high cost of a professional power tool does not imply its ability to withstand extreme loads. It only guarantees accuracy in every process, ease of use in any situation and a long service life.
Budget tool. for rare jobs
It is advisable to choose inexpensive perforators if the prospective small works are not permanent. In this case, the efficiency of use and the service life of the tool will delight every hobbyist.
The middle class is a reliable tool for amateurs and pros
No other category of construction power tool is as popular as mid-range rotary hammers. After all, the opportunity to hold in their hands the products of world-famous companies, as well as the ratio of cost and potential, do not leave indifferent either amateurs or professionals.
Bosch PBN 300 FRE. 7068₽
Like most mid-range models, the PBN 300 FRE comes in a plastic case, with an auxiliary handle, depth gauge, branded bit set, chisel and keyless chuck for conventional drills. But such features as:
- Working with crowns (up to 68 mm in diameter), which allows to minimize the preparation time for places for sockets and switches;
- Adjustment of the number of revolutions, which makes it possible to avoid chipping of the plaster during drilling, and correctly (without aeration of the solution) seal 20-25 kg of dry mixture with water;
- Safety clutch that reduces the risk of injury if the bit or bit gets stuck during tool operation,
And others indicate that this rotary hammer belongs to the number of professional models. And only the cost reminds you that this is a middle-class instrument. Theoretically, this is the possibility of long-term operation in domestic conditions. But in fact, this tool is often used by domestic professionals. Since with a proportionate load and timely maintenance, even the “green” series from Bosch is capable of showing a decent result throughout its entire service life.
| Weight, kg | 3 |
| Drill fixation option | SDS |
| Operating modes | |
| Impact force, J | 2.8 |
| Impact frequency at xx, beats / min | 4000 |
| Shaft rotation speed at xx, rpm | 1450 |
| Power consumption, W | 750 |
| Drilling wood / metal / concrete, mm | 30/13/26 |
| Add. Functions | Reverse, safety clutch |
| Power cable length, m | 4 |
| Origin development / of. Production | Germany / Germany, China |
| Price, rub. | 7068 |
AEG KH24E. 7300₽
Restyling in 2009 did not affect the appearance of the KH24E, the main changes were made in the “stuffing” of the instrument. For example, in the updated models, the impact force was slightly reduced, which increased the accuracy and duration of the work. Thanks to this, this rotary hammer will fit
- An amateur, because in order to use the full potential of the model, it will take more than one year and a wide range of interests (the manufacturer is allowed to work on wood, metal, concrete)
- A professional who will approach the need for the first maintenance in about a year (the resource of the new KH24E has grown due to the decrease in power).
over, each of them will appreciate the elastic coating of the handle, the ability to adjust the speed by pressing the trigger and the presence of a quick-release chuck with a shank.
| Weight, kg | 2.4 |
| Drill fixation option | SDS |
| Operating modes | Chiseling, hammering, drilling |
| Impact force, J | 2.3 |
| Impact frequency at xx, beats / min | 4500 |
| Shaft rotation speed at xx, rpm | 1500 |
| Power consumption, W | 720 |
| Drilling wood / metal / concrete, mm | 30/13/24 |
| Add. Functions | Reverse, safety clutch, electronic speed control, chisel position lock |
| Power cable length, m | 4 |
| Origin development / of. Production | Germany / Germany, China |
| Price, rub. | 7300 |
11. Makita HR2470. 99
The proven ease of working with Makita horizontal rock drills is inherent in the HR2470. Relatively light weight with sufficient impact force and smooth adjustment of shaft revolutions, successfully complemented by comfortable anti-slip handles and a full range of operating functions
The existing possibility of fixing the bit in one of 40 preset positions, reduces labor intensity and increases the accuracy of the chiseling process.
The SDS system ensures prompt replacement of the drill. The permissible parameters of processed wood, steel and concrete fully cover the needs of home or summer cottage repairs. Therefore, the model 2470 is in demand not only by amateurs, but also by professionals specializing in finishing work.
| Weight, kg | 2.9 |
| Drill fixation option | SDS |
| Operating modes | Drilling, drilling with impact, impact without drilling |
| Impact force, J | 2.4 |
| Impact frequency at xx, beats / min | 4500 |
| Shaft rotation speed at xx, rpm | 1100 |
| Power consumption, W | 780 |
| Drilling wood / metal / concrete, mm | 32/13/24 |
| Add. Functions | 40 positions of blocking bit, reverse, safety clutch, electronic speed control |
| Power cable length, m | 4 |
| Origin development / of. Production | Japan / Japan, China |
| Price, rub. | 7469 |
Rock drill rating for reliability. comparison of the best models for home and professional use
Bosch GBH 2-26 DFR
The device, which the manufacturer himself 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 up to 26 mm in diameter 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.
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 a lot of storage space;
- Power sufficient even for short-term work on solid concrete;
- Reliability (the ability to periodically work in the “wear and tear” mode). you can not use the puncher 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 |
Makita HR2470
The versatile three-mode rotary hammer for work on concrete, brick and similar materials. The ergonomic design of the handles maximizes vibration absorption. The device is equally convenient for left-handed and right-handed use. Electric motor power 780 watts. Rotation speed 1100 rpm. there is speed regulation and reverse. In chiseling mode, 4500 blows are made on the working surface.