"Bosch" perforator: specifications and reviews

A puncher is an electric tool used for dismantling brick and concrete building structures, as well as drilling holes in extra-strong materials. With it, you can easily remove from the surface of the old tile, pierce the opening in the wall, make it a groove for laying the cable and even twist the usual screw.

The most famous representative of this type of instrument is the Bosch puncher - it is equipped with a powerful pneumatic impact mechanism, which significantly increases the productivity of the device and is equipped with a number of functions that increase the usability of its operation.

Briefly about the history of the brand

The history of the BOCH brand began in 1886 in Germany. It was then that engineer Robert Bosch opened the first electrical workshop in the country. Under this brand in early 1932 saw the world's first electric puncher. In the spring of 1961 the engineers of the company patented a new pneumatic principle of this tool. At the end of 1946, the company produced the first electric jigsaw, and in 1984 - the "Bosch" rotary hammer, powered by a rechargeable battery.

Today the concern is one of the world leaders in the production of quality products that facilitate human life. The company consists of 300 enterprises and more than 13000 service centers, which are located in 140 states. The range of its products includes, in addition to a variety of power tools, and also high-quality household and garden equipment, as well as batteries and saws.

General scheme of the device puncher BOCH

The design of the perforators of the German brand is represented by a complex but completely thought-out system, all the components of which affect the efficiency and productivity of the instrument.

1. The cartridge.

2. The impact mechanism.

3. Safety coupling.

4. Electric motor.

5. Cable entry.

Let's consider the basic details and elements that the Bosch puncher is equipped with, in more detail.

SDS quick-action chuck

The device is used for fixing working attachments to the unit, prevents them from turning and provides an easy replacement. BOCH punchers are equipped with two types of cartridges:

• SDS-max. For attachments with a shank diameter of 18 mm. The cartridge is characterized by the presence of 5 grooves (3 open - for insertion, 2 closed - for fixation) and suitable for fixing a drill with a working diameter of more than 25 mm.
• SDS-plus. For attaching attachments with a shank diameter of 10 mm. The device is characterized by the presence of 4 grooves (2 open and 2 closed). Such cartridges are equipped with light models of perforators, the drills of which can drill holes up to 25 mm.

Shock mechanism

Each perforator "Bosch" is equipped with a powerful impact mechanism, operating on the principle of a pneumatic system.

As a result of the reciprocating movements performed by the piston (2), a pulse is generated from the "drunk" bearing (1), which oscillates, or, as it is also called, a "drunk" bearing (1), which causes the damper ram (3) to move with the striker fixed to it Hammer (4).

It should be noted that the whole system is driven by the gear of the engine (5). The result of the mechanism is the impact, which strikes the side of the end of the nozzle (drill or blade). In some professional models, the "drunken" bearing of the unit is replaced by a crank mechanism.

Protective coupling

Long-term repair of the "Bosch" perforator is a rare phenomenon, as the device of its mechanics includes a protective clutch, which stops the rotation of the gear of the tool when the drill is jammed in the hole. The presence of such a mechanism not only avoids damage to the unit itself, but also ensures the safety of the user working with it.

Electric motor

The whole tool of German production is equipped with high-quality electric motors, various in size and power consumption (from 400 to 1500 W). From this scheme of perforators "Bosch" you can see that the engine has a horizontal layout. It should be noted that in most powerful professional models it is located vertically.

Cable gland

All the punchers of the German company are equipped with a hinged cable entry that prevents the grinding of the electric wire and increases the comfort of working with the device, increasing its mobility. The structure of this unit allows you to rotate the tool at the right angle, penetrating the most inaccessible places of the building structure.

Reducer

Many units are equipped with a two-speed reducer, which allows to increase the speed of the shaft rotation, without reducing the productivity of the device. If you decide to purchase a tool for home, then you will be advised by the firm "Bosch" perforator. The price of this unit, however, will be much higher than that of its gearless analogs.

Characteristics of the perforator

The Bosch puncher, like any representative of this type of power tool, has three main characteristics that determine its performance:

• The spindle speed determines the speed of rotation of the working tool. This index affects the efficiency of the unit in the drilling mode and can range from 600 to 2000 rpm. Depending on the model of the puncher. Note that powerful professional devices have a lower speed of rotation of the working mechanism, since the diameter of their tooling is much higher than that of a household tool.
• The impact energy depends on the engine power, the mass of the striker and the length of its stroke. It is the main characteristic determining the performance of the unit, and is from 1.2 J for "amateur" models, up to 14.2 J - the impact force, which has the most powerful "Bosch" perforator. The price of such a professional device, however, exceeds 48,000 rubles.
• The frequency of impact is determined by the number of strokes of the striker along the end of the working nozzle for a time interval equal to one minute. This speed depends on the drilling speed of the holes, and together with the impact energy it determines the productivity of the perforator. In different models, this figure can vary from 1100 to 5500 bpm.

The technology of the German brand is distinguished by the selection of the optimal ratio of all these parameters, which makes it truly reliable and high-quality.

Operating modes of the tool

The clear advantage that the "Bosch" puncher has is its ability to work in different modes:

• "Rotation" - is designed for drilling holes in materials of medium hardness (metal or wood). Allows you to carry out this type of work without the purchase of additional equipment (electric drills).
• "Blow" - in this mode the unit works as a jackhammer, which is necessary when dismantling elements of the old finish (tiles or plaster), breaking the partitions, making grooves and niches in the surface of the structures.
• "Rotation + impact" - the mode is used when drilling durable concrete, increasing the effectiveness of the drill. For those who require frequent use of this method of operation of the tool, we recommend that you pay attention to the Bosch Hammer model . The puncher of this brand is characterized by high power at quite affordable price.

Classification of aggregates

So, we noted that the models of BOCH punchers have differences in the power of electric motors, the speed of rotation of the spindle, and the frequency and force of impacts. This allows you to divide all the units into the following types:

• Household models. Equipped with low-power electric motors (400-730 W). The perforators have three operating modes: "drilling", "impact", "impact + drilling." Household models differ in small weight (4-6 kg). One of the most popular perforators of this series is BOCH PBH 2800 RE. The letter "P" in the marking of the product means "personal", that is, for personal use. The plastic protective housing of household units is painted green. The main drawbacks are poor engine cooling and high impact output, which has a household puncher "Bosch". Feedback from home masters about the line of "amateur" assemblies of the German assembly indicate that these inconveniences are more than compensated by the advantages of the instrument. Note that the main advantages of such models are their compactness, low weight and quite acceptable cost.
• Professional models. Equipped with motors, the power of which exceeds 800 W. Weight of professional units varies from 6.5 to 12 kg. A well-known representative of this line of devices is the "Bosch" GBH 8-45 DV perforator. The power of its engine is 1500 W, it has two operating modes: "impact" and "drilling + impact." Professional models can be easily distinguished by the blue color of the plastic case. Their dignity is considered high power, effective cooling of the electric motor, low vibration and long service life. Among the shortcomings can be noted quite significant dimensions and high cost of such units.

Depending on the power source, the BOCH perforators are divided into electrical, operating from household electric power 220 W, and rechargeable batteries, functioning from a lithium-ion or nickel-cadmium battery. Devices of this type are indispensable when working in places remote from power supplies, or in de-energized rooms.

Additional aggregate functions

Regardless of the type and brand, most models of this German technology are equipped with a set of functions that increase the productivity and ease of operation of devices. Virtually all units are equipped with:

• Dust removal system. Note this element especially, because if you have it you can forget for ever what a disassembly is. The Bosch puncher, equipped with this function, has an extended warranty period.
• Stabilizer of shaft rotation.
• Rake, limiting the depth of drilling.
• System "smooth start".
• Speed control.
• Anti-vibration system.
• Protective device to prevent overheating.

Thanks to various possibilities of devices, any user - from a professional builder to a simple home master - will be able to choose the Bosch punching device appropriate for his needs. Reviews about this tool are only positive and speak of its universality, efficiency and consistently high quality.