Perforator Bosch GBH 2-26 DFR Professional: instruction, repair, reviews

Punchers for professional use in the mass have good performance characteristics, but they lose to home analogues in terms of ergonomics. This combination of qualities suits most users, since the solution of complex problems in the construction itself presupposes, first of all, a high return on the direct function of the instrument. Nevertheless, the developers of the company Bosch decided to depart from the general rule and create a model that combines the advantages of both categories - that is, combine the convenience of operation and high power. The result of the efforts of German designers was the Bosch GBH 2-26 DFR Professional perforator, which can be used in a wide range of construction and installation operations. The model has practically no competitors in its class, which makes it a unique development.

The device of the perforator

The basic composition of the tool includes a standard set of components, including: working elements, safety features, a wide range of cartridges, an ergonomic handle, clamps and stops, shanks and lock rings. As for the external version, it is represented by the main and auxiliary handles, which are integrated into the case. Also, the Bosch perforator device has a safety screw, which allows drilling with the required parameters, regardless of the quality of the instrument's control from the user's side. A feature of the design is the possibility of easy application of different attachments. Thanks to the SDS Plus system, the operator can use the quick-action chuck, that is, it is possible to work with attachments that may not be compatible with the SDS cartridge. This solution significantly increases the functionality of the punch, eliminating the need to have a model with other parameters of the working elements.

Specifications

The model has a fairly high impact force, while it can maintain the optimum drilling quality for a long time. Such efficiency is provided by the technical stuffing, which the Bosch GBH 2-26 DFR Professional perforator has in its basic version. So, the characteristics of the model look like this:

• Power - from the network 220V.
• The power consumption is 800 watts.
• The frequency of impacts is up to 4,000 rpm.
• The number of working revolutions is up to 900 rpm.
• Number of operating modes - 3.
• The torque at the maximum values is 28 N * m.
• Shock potential - 3 J.
• The maximum diameter in the processing of steel is 1.3 cm.
• The maximum diameter in the processing of concrete is 2.6 cm.
• The maximum diameter in the processing of wood is 3 cm.
• The crown diameter is 6.8 cm.
• Dimensions of the instrument are 40.7x21 cm.
• The length of the cable is 350 cm.
• The weight of the power tool is 2.7 kg.

Technological features of the perforator

The implemented technologies are aimed at improving the performance of the tool in several parameters. So, for the convenience of the operator an additional handle is provided. With its help, the user can provide accurate work without fatigue for a long time. Auxiliary handles are widely used by other manufacturers, but the Bosch GBH 2-26 DFR Professional is supplemented with a device with a soft overlay and the ability to turn in any direction. The presence of a limiter in the tool also contributes to high accuracy. This device makes it possible to choose the depth and create the same holes with the set parameters. Also, the user can adjust the number of revolutions. This function is controlled by stepless adjustment by changing the force exerted on the switch.

Assembling and tuning the perforator

Use the tool only with an additional handle. To install it, you need to turn the knob in the desired direction until it is completely locked. In the correct position, its tightening tape should be in a special groove of the body. Next, adjust the drilling depth. For this setting, use the appropriate limiter supplied with the Bosch perforators. The instruction indicates that when mounting the corrugation of the restricting device must be directed upwards. Then, the SDS-plus cartridge is inserted as far as it will go. It is very important that it is correctly installed, since the slightest displacement will result in improper operation of the tool. The stopper must be extended so that the gap before the end of the drill matches the set depth.

Instructions for use

The first step is to insert the chisel into the chuck, which can be fixed in different positions. Then the operating mode is set. Before use, check the condition of the protective cap. Available spare parts for the Bosch perforator also include this element, so if necessary, there will not be any problems with updating it. If you plan to work with crushing, then you should set the right direction of rotation of the working element. Separately it is necessary to consider the installation of bits. Use bits for wrapping can only be done with a special bit holder, equipped with a shank of fixation SDS-plus. Before installing this element, its landing end should be carefully lubricated and cleaned. The device is inserted until it is automatically installed.

Maintenance Instructions

A qualitative and safe operation of the tool is possible only if its ventilation openings are kept clean. For the implementation of preventive measures, the Bosch perforator is dismantled, which separates all working elements and an additional handle. All surfaces of the parts should be cleaned, but without the use of strong chemical solutions and coarse abrasives. The cartridge should be cleaned every time the tool is used.

Not all faults can be eliminated on their own. As a rule, self-repair involves only the replacement of damaged items that can be dismantled at home. The German manufacturer, on request, supplies spare parts for the Bosch perforator to its customers. To order, you need to determine the component number and redirect it to an authorized center.

Positive feedback about the model

Owners note the qualitative assembly of the device, its high performance and ease of use. High power with an impact energy of 3 J allows you to cope with the most difficult materials in the processing - practice shows that the Bosch GBH 2-26 DFR Professional effectively drills both concrete and metal. The main thing is to correctly use the settings. We can say that any perforator from the segment of professional models differs in high productivity. However, in the case of the German tool, users also emphasize the wide functionality, supplemented by well thought-out ergonomics.

Negative feedback on the model

Negative feedback refers to the weight of the puncher and the cost. Still, a decent power potential could not be realized without making the device heavier. True, the presence of an additional handle, as the experience of owners, compensates for the weight. In terms of cost, the device surpasses both low-end models and inexpensive professional analogs from other manufacturers. In this case, the high quality and reliability that the Bosch perforator possesses is reflected. The price varies from 8 to 10 thousand rubles. For comparison: less eminent brands offer similar options for 6-7 thousand. Although there is no question of a complete comparison of their products with a German puncher.

Conclusion

The market of building power tools is rather densely packed with models in different segments. As a rule, for any device you can find a similar option from a competitive manufacturer. However, the model from the German company has several features that distinguish it even in the class of advanced professional tools. The main advantage is the Bosch perforator cartridge, which expands the operator's capabilities in terms of selecting suitable attachments. Together with the high power of the adjustment tools make the operation of the perforator efficient and productive. You can get a high quality drilling in any material. In addition, the developers of Bosch made a serious step in terms of automation of the processing. Suffice it to say that adjustment devices and limiters eliminate the user from careful checks of the work area.