A jackhammer in his life probably saw everyone. This is the same noisy and large unit that kept miners and road workers in the old Soviet films. Apply jackhammers began when laying tunnels and in the mining industry in the early twentieth century. But over time, the technology of rocking rocks and the production of strategic raw materials has changed very much and therefore more productive devices and machines crowded hammers.
Interesting is the fact that electric jackhammers were originally created, but they could not be used in the mine due to possible sparking, which could lead to a fire or even an explosion. In addition, in those times, technology did not allow sufficient reliability and power from the electrical instrument. For this reason, the pneumatic was dominated for a long time, where the energy from the compressor to the impact mechanism is supplied with compressed air through the hoses.
And the jackhammer began a new life, but already in construction. The world leaders for the production of manual tools arrived in time, making an electric chipper available, reliable, safe, convenient and powerful. He began to be systematically to dismiss the market in hammers with gasoline, pneumatic and hydraulic drive. Among the advantages of the electric bump, you can highlight the simplicity of maintenance, low level of vibrations and noise, as well as environmental friendliness.
With its help on the construction site, you can produce most of the dismantling work: metal cutting, ice dump and frozen soil, fault of asphalt, manufacture of large holes and openings, concrete destruction (screed, overlap plates, old foundations, monoliths, boulders), disassembly of stone and bricks walls. But the bumpman is suitable for pure creation - with the help of a tamping sole, we can seal rubpnery pillows and soils, a crutch sledge hammer to score cylindrical and serrated rods. A simple perforator does not help here, as it is less powerful than a jackhable hammer, which also does not have a drilling function, and all energy is sent to the blow.
Bosch GSH 5 E
For a long time, our young brigade did not have a jackhammer. Savited the position of renting a shock tool, but, frankly, the cost of this service is quite high, when taking into account that the volume of dismantling work constantly increased.
When the time of insight came, it became clear what we need. The main work for which was needed was a jackhammer was carried out when redeveloping apartments - make the opening in the wall, smash the brickwork. Even in new buildings it was possible to roast. Sometimes you have to shoot down the plaster, cutting old ties, choose a niche for a safe or electric shield, make large shortfold for various communications.
From some time, we began to engage in the construction of cottages, where the front front expanded - to make a hole in the overlap, fill the foundation, pierce the opening plate for the stairs. Therefore, before choosing an electric jackhammer it was clear that we need not hard and not even the average bump - to perform these works it could have been enough to ensure the power of a light model. As a result, we purchased a tool of the company Bosch.
Bosch GSH 5 E chipper pleasantly surprised us with his shock force, the value of which reached 12 J with a frequency of 3000 beats per minute, which was an unattainable indicator at that time. When working, such a tool may have a sense of its own greatness, because it easily copes with the destruction of concrete and other materials. As it turned out, you can enjoy and hard work. It is not always necessary for such a power from which the walls can collapse in the next apartment, so the frequency controller, made in the form of a small wheel on the housing, is very useful.
Article on the topic: Makeup Mirror with LED Backlight DIY
The electric bump reducer does not overheat, since the metal case copes very well with heat dissipation, so that there are no pauses for cooling. A 1100 watt motor copes with all the tasks without difficulty.
After the unit was included in the network and the launch key is pressed, his heart came to life rather smoothly, while the network did not feel overload. But there will be no shock until you give him peak load. The light indicator signals the standby mode. The launcher has a retainer, so during continuous operation you do not need to strain your fingers.
If the equipment robs into a solid material, then the bump starts to work a little different, as the constant electronics is triggered, which does not allow the engine turnover to fall. The service display helps to monitor the state of the instrument.
Bosch GSH 5 E Pumping Hammer is very convenient when performing work on the head, on the elongated hands and in the horizontal plane, as it weighs only 5.5 kg, and its dimensions are 480x235 cm, which allows to compare this unit with barrel perforators.
It is also equipped with a very convenient additional bag-like handle, which is deployed at an angle, thanks to which it is possible to expand and narrow enough grip, as well as deploy it by 360 degrees.
The launcher is made large, so it can be fascinated even in coarse mittens. Switches are characterized by light and clear work.
Also worthy of admiration and system that protects against vibrations. It is the best of those that managed to test. It is difficult to submit any effectiveness to achieve in more modern models (VIBRATION CONTROL).
The extensionnel's pad will not interfere with you under your feet, since the power cord has a pretty decent length. At the same time, it is well insulated and is quite elastic. There is a Bosch company and another know-how - the cable is connected to the housing of the bump by the hinge. Thanks to the movable sphere, the cord is excluded, which will be very useful when working in squeezed places.
A flat peak-blade can be turned into one of the twelve positions so that it is possible to produce in a limited space convenient and accurate loaf. In the Bosch company, this system was called "Vario-Lock", it is used in all Bossevsky bosses and perforators.
In this detachment model, the SDS-MAX cartridge is used, since a large snap-in for transmitting the impact energy of this type is needed.
Also, the jackhammer is equipped with a spacious, high-quality Case.
Bosch GSH 5 E's jackhammer serves as faithful for several years. At one time, we spent about $ 700 at him, but he fully paid off every cent. In addition, it is still not even going to go on peace, and will work, as before.
Of course, this model has already been removed from production, but if necessary, we will take another similar model of the Bosch company weighing about five kilograms.
Differences of electric bumps
It is necessary to approach the choice of electric bumps very carefully, as it has a fairly high cost. Most often, when choosing an electric tool, you need to start a conversation from what model you need is a household or professional. Although, amateur class for a jackhammer is actually no. But it should be taken into account that almost all manufacturers offer hammers that are designed for a wide variety of tasks.
Article on the topic: Blinds or curtains on plastic windows
Classification of electric jackhammers
This type of tool can be divided into three groups. The first includes light jackhammers, which have a lot of up to 5 kilograms. They are light, compact and relatively universal, in the horizontal plane they are very convenient to work. If you are supervised tasks, it is better to use average (weight from 5 to 10 kg) or heavy (up to 30 kg) bumps, which are also called concretera. Such bumps are very narrowly specialized and in a horizontal position with them quite difficult to work. These bumps are primarily intended primarily for foundation and primer operations, as well as for road works directed vertically down. In accordance with this, these biparts can be classified on horizontal and vertical. The division of hammers by weight is quite reasonable, since this characteristic indicates the massiveness of the parts and the power of the tool.For example, the weight parameter is already now introducing a Bosch company in the marking (USH 27, GSH 5 CE - respectively 27 and 5 kg).
One of the main indicators is definitely the engine power, which varies from 500 to 2000 watts. The higher the power of the tool, the higher the performance of the jackhammer and the greater the frequency and the blow strength can be obtained at the output. Greater power will allow you to operate the tool continuously for a longer time, as well as apply a larger snap. But it practically does not apply to Chinese products, as Chinese tool manufacturers most often install the most powerful motors on their products, but usually it turns out that it does not work excessive watts.
Impact force
The maximum strength of a single strike is another important characteristic of the electric bump. This force is calculated in Joules. The greater the moment of impact, the concrete model has more opportunities and the more durable material it can destroy.
For light bumps, this indicator is at the mark of 3-8 Joule, and for powerful concreteoles it can exceed 60 Joule (Makita HM 1810, Bosch GSH 27 VC). Sometimes a small impact force can be compensated by a high frequency of the Boyhead, which performs reciprocating movements. For example, Bosch GSH 5 CE, which has a blow of 8.3 joule, can make 2900 beats per minute, and Makita HM 1810, whose impact force is 63 Joules, makes only 1100 shots per minute. Summing up, we can say that the number of blows and the impact force are the main indicators of the instrument's performance, but a lot depends on their proper relation.
Control and Indian
An electric jackhammer is a high-tech and fairly expensive tool that should have a number of electronic systems that need to provide its functionality and reliability. One of these systems includes adjusting the frequency of beats, which can be done or a regulator, in the presence of a launch fixation, or by the degree of pressing the button. By the way, the launch button lock is quite an important detail, thanks to which the trigger can be released during continuous long-term operation. If the start is made in the form of a slider, it does not require fixation in principle.Some models have a mechanism that disables the hit function when working at idle - standby mode. This mode is able to increase the drum resource.
Article on the topic: How to cash out doors do it yourself
During the power on the powerful bipler, the start current limitation should always be triggered. This is done in order not to have a jump in power consumption. For example, DEWALT D25899K has this feature.
Many manufacturers are equipped with various control devices (indicators, displays), which signal the wear of the brushes or the need for service. If you do not replace the brushes on time, they can disable themselves, preventing damage to an expensive engine. The condition of the fork and cord can also be monitored.
Protection against vibration and noise
Do not forget about anti-billion systems, since the problems of combating vibration and noise are solved in different ways. The first thing that is worth mentioning is the built-in system of dynamic counterweight, with which you can reduce vibration by about 50-70%. There are still foamed and rubberized lining, as well as handles with damper inserts and spring suspension. For example, Hilti uses the AVR system (active absorption of vibrations) in TE 3000-AVR and TE 1000-AVR models.
Constructive features
Do not be surprised that some models have a plastic gearbox, and others are metallic. Usually plastic is selected in order to reduce the weight of the horizontal tool. But you should not fear about this, because the material used is not only light, but also rather wear-resistant and durable. An example is Makita HK 0500 chipper. For powerful devices, metal parts made of magnesium alloys and aluminum are often used.
It may also differ a cartridge designed to fix the shank. Some manufacturers have the easiest models with an SDS-Plus snap-in, but most of the bumps work with SDS-MAX cartridges, the diameter of which can be up to 26 mm. The most powerful models use peaks with a diameter of up to 30 mm and a hex shank (Hitachi H65SB2).
Sometimes you have to work with a variety of positions, therefore, if the tool has the ability to choose and fix various provisions of the equipment, it will only benefit. Most often used twelve positions located every 30 degrees.
Before choosing an electric jackhammer should pay attention to the ergonomics of the product. It is very important for the presence of an additional handle, which can be both D-shaped and straight. It must be convenient for the operator and have many installation provisions.
Outcome
If many models of the same class are so similar, how to choose such a model of a jackhammer that is best suited? It can be said that all major companies that are engaged in the production of construction tools have long been known and each of them makes quite decent jackhammers. The qualitative and technical characteristics of their products are approximately at the same level. In this field, innovation appear extremely rarely and all competitors will quickly recognize. It makes no sense to choose a tool for individual parameters, since most often developers carefully balance their products.
For this reason, when choosing a bipper, it is necessary to repel from the features of the front of work and specific tasks, as well as on personal preferences in the field of design and ergonomics.
The main criterion in which you can divide the bumps - weight - light, medium and heavy.
Some builders prefer cheap Chinese tools that are much cheaper than branded. But this approach is often not justified, since you can incur forced losses from idle, and the level of security with the performance of Chinese instruments is much lower.