Rotary hammer Bosch: specifications and reviews

Punch – it is a tool used in the dismantling of building structures of brick and concrete as well as drilling holes in the reinforced materials. It can be easily removed from the surface of the old tiles, punch a hole in the wall, make a groove for laying of cable, and even to tighten a normal screw.

The Most prominent representative of this type of tool-a hammer drill "Bosch" — equipped with a powerful pneumatic impact mechanism, which increases the device performance and a range of features that enhance ease of operation.

Brief history of the brand

The history of the brand BOCH began in 1886 in Germany. It was then that engineer Robert Bosch opened the country's first electrical repair shop. Under this brand in the beginning of 1932 saw the light of the world's first electric drill. In the spring of 1961 by engineers of the company have patented a new pneumatic principle of operation of this tool. At the end of 1946 the company produced the first electric jigsaw, and in 1984 – hammer drill "Bosch" battery-operated.

Today the group – one of the world leaders in the production of quality products that make life easier for people. The company consists of 300 companies and more than 13,000 service centers, which are located in 140 countries. In its range of goods includes, in addition to a variety of power tools, and even high-quality household and gardening equipment, as well as batteries and saws.

General diagram of the device of the punch BOCH

The Design of the anchors of the German mark are complex, but it is absolutely a sound system, all parts which affect the efficiency and performance of the tool.

Recommended

The most effective methods of seed germination

Despite the fact that the method of seedling in vegetable production is a very time consuming process, it is used by most gardeners. Planting seeds in open ground is an easy and convenient method, but it is effective only in certain climatic zones. I...

Retro-reflective paint. The scope of

When the vehicle began to fill the road, their popularity began to gain reflective paint. Thanks to this paint, as drivers and pedestrians becomes much easier to avoid accidents in the dark. Purpose paint Reflective paint – paint material, whic...

How to make icon with your own hands - options izgotovleniya (simple and complex)

In Soviet times, many collecting badges, emblems, pennants. To get them was not easy. And today, thanks to technology, you can make them yourself. Knowing how to make icon with your own hands, and you can make original gifts to your friends, and make...

1. Cartridge.

2. The percussion mechanism.

3. The clutch safety.

4. Motor.

5. The cable gland.

Consider the main parts and elements, which are equipped with hammer drill "Bosch" in more detail.

Keyless Chuck SDS

The Device is used for attaching working heads to Assembly and prevents turning and provides easy replacement. Hammers BOCH equipped with cartridges of two types:

• SDS-max. For bits with shank diameter of 18 mm. Cartridge characterized by having 5 slots (3 open – to insert; 2 closed – for locking) and are suitable for mounting the drill with a diameter more than 25 mm.
• SDS-plus. For the attachment of bits with a shank diameter of 10 mm. the Device is characterized by having 4 grooves (2 open and 2 closed). Such cartridges are fitted with lightweight models of drills, drills which can drill holes up to 25 mm.

Firing mechanism

Each drill Bosch features a powerful impact mechanism working on the principle of pneumatic system.

As a result of the reciprocating movement which carries the piston (2), obtaining the momentum from swinging, or as it is called, “drunk” bearing (1), creates a compression of the urge to move the damper-RAM (3) with the attached striker, the striker (4).

It Should be noted that the whole system is driven by a gear motor (5). The result of the work of the mechanism be the shock that causes the firing pin at the end of the nozzle (drill or blade). Some professional models, “drunk” the bearing Assembly is replaced by a crank mechanism.

Safety Clutch

For a Long period of repair hammer "Bosch" – a rare phenomenon, as the device mechanics it includes a security clutch that stops the rotation of the gear of the tool in case of jamming of the drill in the hole. The presence of such a mechanism not only avoids damage to the machine itself, but also ensures the safety of the user working with it.

Motor

The Whole instrument of German production is equipped with quality electric motors, various in size and power (from 400 to 1500 watts). This chart drills "Bosch" shows that the engine has a horizontal layout. It should be noted that in most powerful professional models, it is vertical.

Cable entry

All the drills German company equipped with swivel cable entry which prevents chafing of cables and improves comfort of work with the device, increasing its portability. The structure of this node allows you to rotate the tool to the desired angle, penetrating into the most inaccessible places of the building structure.

Gear

Many of the units are equipped with two-speed gearbox, which allows to increase the rotational speed of the shaft, without reducing the performance of the device. If you think to buy tool for home, you will advise the company "Bosch" drill. The price of this unit, however, will be significantly higher than its direct counterparts.

Features punch

Hammer drill "Bosch" as a representative of the power tool of this type, has three main characteristics that determine its performance:

• Rpm spindle – specifies the speed of rotation of the working tool. This indicator affectsthe efficiency of the unit in the drilling mode and can range from 600 to 2000 rpm depending on the model of punch. Note that powerful and professional devices have a lower speed of rotation of the working mechanism, since the diameter of the snap-in is much higher than the consumer tool.
• Energy – depends on engine power, mass of the striker and the length of its stroke. Is the main characteristic that determines the performance of the unit, and ranges from 1.2 j at the “Amateur” models to 14.2 j – the force of the blow, which has the most powerful "Bosch"-hammer drill. The price of such high-end devices, however, exceed 48000 rubles.
• Impact Frequency – determined by the number of strokes of the striker at the end of the working nozzle for a period of time equal to one minute. From this characteristic depends on the speed of drilling holes, together with the impact energy, it determines the performance of the drill. Have different models, this figure can vary from 1100 to 5500 beats/min.

The German technology brand is characterized by selecting an optimum ratio of all these parameters, which makes it truly reliable and high quality.

Working modes of the tool

A Clear advantage, which has a drill Bosch, is his ability to work in different modes:

• “Rotation” — designed for drilling holes in medium hard materials (metal or wood). Allows you to carry out this type of work without purchasing additional equipment (electric drill).
• “Shock” — in this mode the unit operates as a jackhammer, which is necessary when removing elements of the old finishes (tile or plaster), the destruction of the partitions, the execution of grooves and recesses in the surface structures.
• “Rotation + strike” — this mode is used for drilling solid concrete, increasing the efficiency of the drill. Those who need frequent use of this method, I advise to pay attention to the model of "Bosch hammer". Punch this brand has a high capacity at a reasonable price.

Classification of aggregates

So, we noted that models of drills BOCH have differences in power motors, high speed spindle, and also frequency and force of the blows. This allows us to divide all units into the following types:

• Domestic models. are Equipped with electric motors of low power (400-730 W). Punches have three working modes: “drill”, “blow”, “blow + drilling». The common models are lightweight (4–6 kg). One of the most popular drills of this series is BOSCH PBH 2800 RE. The letter “R” on the product label means “personal”, that is, for personal use. Plastic protective case household units painted green. The main disadvantages – poor engine cooling and high shock impact, which has a household hammer drill "Bosch". Reviews of the house masters on the line “Amateur” units of the German Assembly indicate that these inconveniences are more than kompensiruet advantage of the tool. Note that the main advantages of such models is their compactness, low weight and perfectly acceptable value.
• Professional. Equipped with motors whose capacity exceeds 800 watts. Weight professional units varies from 6.5 to 12 kg. Known representative of this line of devices is the rotary hammer Bosch GBH 8–45 DV. Engine power-1500 watts, it has two working modes: “blow” and “drilling+punch”. Professional models can be easily distinguished by the blue color of the plastic housing. Their advantage is large capacity, efficient cooling of electric motor, small vibration and long service life. Of the shortcomings can be noted a fairly significant size and high cost of such units.

Depending on the power source batteries BOCH divided into electric, powered from a household outlet of 220 V, and battery operated by a lithium-ion or Nickel-cadmium batteries. This type of device is indispensable when working in locations remote from sources of power or de-energized in the premises.

Advanced units

Regardless of the type and grade most models of this German engineering is equipped with a set of features that enhance performance and ease of use of the devices. Virtually all units are equipped with:

• A dust removal System. Note this element especially, because at present you'll be able to forget what the disassembly. Rotary hammer Bosch equipped this feature has a longer warranty period.
• Stabilizer shaft rotation.
• By Rail, limiting the drilling depth.
• System “soft start”.
• Variable speed.
• Anti vibration system.
• Protective device to prevent overheating.

Due to the different device capabilities, any user — from Builder-professional to simple home of the master — will be able to choose appropriateneeds hammer drill "Bosch". Reviews about this tool are only positive terms and talk about his versatility, efficiency and consistently high quality.