Choosing a cordless screwdriver

Almost the majority of construction tools users prefer to have only a versatile tool. The reasons for this are quite natural desire: rational to have one tool in the economy, which can replace several. in closet savings and on the shelves of the obvious. However, all things exist as its advantages, and disadvantages, and versatile tool with battery is no exception to this general rule. Site repair of an apartment on their own tell how to choose the correct screwdriver and it is better to pay attention. Share your opinion and, leave feedback.

Therefore, the user should keep in mind, that choosing a universal tool, he consciously admits averaging some characteristics, according to which the estimated quality of the instrument, such as the drilling rate or impact force. Moreover, some characteristics of the instrument are simply incompatible, such as hammer drilling and drilling small diameter holes. Instead, the user enjoys all the benefits inherent flexibility as that:

• Tool with battery provides a battery life of household electric
• Multifunctional tool provides wide possibilities of its application
• The simplicity and accuracy

And this is a partial list of features of the universal instruments. Currently, manufacturers offer a wide range of different models of cordless tools such as universal: Screwdrivers, sanders, planes, etc.. This trend displacement familiar networking tools cordless tools, not only in everyday life, but also in the generation and industry. article, given the urgency of the matter, The right tools, examines in detail the characteristics and parameters of cordless screwdrivers.

Cordless Tools - advantages and disadvantages

Absolutely obvious, that the optimum tool selection is primarily determined by the tasks, the solution of which the tool should provide, and, of course, the conditions of its future operation (Operation in a residential or professional applications). A clear understanding of the future operating conditions is even more important, if consider, that the cost of multi-functional household tools is not much different from the cost of professional cordless screwdrivers. Quite logically the question arises - what distinguishes a professional tool from household models. The main difference is manifested in, that professional screwdriver can withstand longer load and less careful handling.

It is these parameters and distinguish professional from a simple model, and so many manufacturers specify data sheets, that their product does not lose its efficiency after a fall from a certain height. It is also necessary to take into account, that even in the repair tool, intended for domestic use, operated less intensively, than in a production environment. However, such a high strength and reliability of the resource provided by the functionality. It is for this reason, a professional tool less functional, than home.

For a more clear understanding of the subject matter, you need to analyze the situation, The concrete examples. supposing, that in some furniture shop received a batch of universal cordless screwdrivers brand QUATTRO, each of which represents a 4 screwdrivers in one brand Black&Decker KC2002FK.

On the surface,, it seems, that furniture manufacture equipped with excellent technique, produced by well-known brand, and thus to save quite a decent amount of money (set the price 6000 g., whereas the standalone tool does not cost much cheaper). But this judgment is rather superficial. Let us consider the question thoroughly. On the production is almost always for the time necessary to perform the same operation, or wood rasp, or to engage in the installation of the finished product, or address the issues of packaging products. Not hard to guess, that only one tool is required to perform the same type of functions (eg, fretsaw, plane, screwdriver, etc.). All will become clear, if we compare the characteristics of the screwdriver with nozzles Black&Decker KC2002FK and features a separate tool. Choose this versatile cordless screwdriver those, who do not need so often to apply the individual components, and even the tool itself.

For greater clarity, it makes sense to consider all products of the same brand, namely screwdriver Black&Decker CР12K, which is the cost of 3.5 thousand. rubles. Screwdriving KC2002FK type used battery capacity 1.5 Ampere / hour and voltage 14.4 AT, while in no universal model used battery capacity 1.5 Ampere / hour and voltage 12 AT, but the value of its torque is 16 nm, while the more powerful universal screwdriver all 10.5 nm. The first significant sacrifice to ensure versatility of the device.

Versatile tool can also be used as a jigsaw, to which, of course, There are specific requirements does not make sense. Jig of the same firm has a capacity KS999EK 600 W, and adjustable frequency varies from blade moves 0 to 3200 stroke / min.

Nozzle universal device demonstrates the same stroke frequency (3000 stroke / min), but it can help to cut the material to a depth of 38 mm, and specialized jigsaw to cut a tree 65 mm.

Who better to select this instance? Universal screwdriver with nozzles Black&Decker KC2002FK is an ideal tool for use in the home, in which it is used only when necessary, that is quite rare. Its use in the production of meaningless, and so in a professional environment are widely used specialized tools, equipped with the same type of battery packs, and for a strictly limited, standard features.

Overview of professional screwdrivers

rational approach, saves money, demonstrated the firm BOSCH released the model line tools, which the battery powered screwdriver brand GSR 18 VE-2-LI Professional. note, that savings is quite significant, when you consider the high cost of modern type of battery Li-Ion. In this way, acquiring an additional tool of this company, there is no need to buy another battery and.

How to choose the right cordless screwdriver

After a review of the basic properties of the universal cordless dwell in more detail on the selection of a cordless screwdriver, and consider options, which will allow to use a tool, not only at home, but also for commercial purposes.

Our discussion is limited to products, NiCd batteries equipped with the brand, which in the present high demand, because, Despite all its advantages, battery type Li-Ion because of its high cost, very popular not enjoy. The main parameters, to be brought to their attention in the selection tool, are:

• staffing tool 2 battery to a voltage value not less than 12V
• The presence of the charger, able to recover the model for 1 time
• Facilities tool a large number of steps (efforts puffs) via which the torque adjustment frequency
• High torque
• cartridge, which is equipped with a tool
• Having multiple speeds

It recommended closely acquainted with the warranty card, as some manufacturers do not provide warranty for batteries. it's desirable, to additional equipment included a set of nozzles, 3 batteries and a flashlight.

Armed with all the necessary knowledge to evaluate the merits and demerits, following models of famous brands:

• Cordless Screwdriver brand see 8281DWPE, which is the price 5.8 thousand. rubles and equipped with a battery type Li-Ion and strike option.
• Cordless Screwdriver brand Hitachi DS12DVF3 equipped with lanterns.
• Cordless Screwdriver brand BOSCH GSR 12-2 Professional.
• Cordless screwdriver Metabo BSZ 14,4 Promotion, cost from 7 thousand. rubles and has "momentum" fairly rare option

Unfortunately due to the exchange rate was not the actual cost and is for information

of course, all selected for examination are of high quality tools, reliability and durability. Although all of these screwdrivers are classified as professional tools, they cost quite accessible to the ordinary user, Now take a closer look at the characteristics and decide which one to choose the best.

Cordless Screwdriver Makita 8281DWPE

a new generation of battery source of power to the instrument type is Li-Ion with stress 14.4 AT, which undoubtedly is an advantage.

The tool comes with 2 battery charger and, which restores the device performance in just one hour. Rotational speed of the screwdriver is divided into 2 band: first speed range includes the values ​​of the rotational speed of the 0 to 400 rev / min, and the second range 0 to 1300 rev / min.

Screwdriver is equipped with a keyless chuck (10 mm), features 16 stages torque setting (maximum 36 nm), and the weight of the tool is 1.7 kg. Further typical operation tool equipped with a pin option, and perform in a state of 0 to 18 thousand. beats per minute.

As the tool disadvantages you can specify::

• tool, equipped with shock function, manufacturer supplied him quite weak cartridge
• Low battery capacity (Total 1.3 Priority), it is not enough for intensive work
• There is a possibility of overlapping hand air vents, intended for the cooling of the motor during operation in the impact mode, wherein the vent holes are so poorly, which necessarily overlap in the case of wide user hands
• Housing screwdriver gear, equipped with shock function, desirably made of a metal.

Cordless Screwdriver Hitachi DS12DVF3

The tool is formed with a somewhat exotic external design. This design is not accidental. First of all, forge tool body simply is not economically feasible, and, Secondly, Exotic lining protects the instrument from falling. Besides lining also provide the necessary ergonomic handle screwdriver (the user's hand is protected against vibrations and do not sweat the intensive work).

The screwdriver is supplied with a flashlight, Charger provides recovery for health products 1 hour and battery capacity 1.4 Priority.

screwdriver has 2 speed ranges: first speed range includes the values ​​of the rotational speed of the 0 to 300 rev / min, and the second range 0 to 1100 rev / min.

Screwdriver is equipped with a keyless chuck (10 mm) and 22 stages torque setting.

Please note when selecting, for basic flaws tool:

• outdated, although very reliable chuck
• Unsuccessful mount interchangeable bits bracket (Bit often cling to clothes)
• The small size of the reverse button, although its very location is quite convenient for the user

Cordless Screwdriver BOSCH GSR 12-2 Professional

The tool is well known in our country and externally in a traditional style for the firm BOSCH. Speed ​​range consists of products 2 sub, namely:

• The first sub-band from the 0 to 400 rev / min
• The second sub-band from the 0 to 1200 rev / min

The technical equipment includes keyless chuck tool (10 mm), coated handle grip and shock-absorbing products 25 stages torque setting, the maximum value of which is 27 nm. Supplied 2 battery capacity 1.5 Ah and charger, which restores the product of 1 time.

The main disadvantages are the screwdriver:

• Absence of lining on the back of the tool body
• Several unsuccessful arrangement of a cartridge, which can cause discomfort when replacing the replaceable tool

Cordless Screwdriver METABO BSZ 14,4 Promotion

The equipment is equipped with a "pulse" rather rare option, which eliminates the need for core drilling, and maximizes torque, whose value is 55 nm. Speed ​​range consists of products 2 sub, namely:

• The first sub-band from the 0 to 400 rev / min
• The second sub-band from the 0 to 1400 rev / min

The tool is supplied with a charger and 2 battery.

The main disadvantages are the screwdriver:

• Several dimensional body
• Large-sized battery module release button, which may cause some inconvenience during operation
• Unsuccessful location vents in the lower portion of the tool, who will quickly become clogged in a high concentration of dust

After analyzing the advantages and disadvantages of these models summarize our analysis in the final conclusions. Powerful tools METABO BSZ 14,4 Promotion, equipped with the useful feature of "impulse", It offers users more options, but its high cost and weight (2 kg), clearly not contribute to the popularity of the instrument. Opportunities screwdrivers BOSCH GSR 12-2 Professional and Makita 8281DWPE approximately equal. note, that a lower torque screwdriver brand BOSCH completely compensated battery capacity and, Consequently, longer working time. Maximum comfort at work, apparently, is able to provide screwdriver Hitachi DS12DVF3, despite its exotic design. Excellent ergonomics tool contributes to a sense of security and confidence, a flashlight, and anchorages model on the belt only increase the ease of operation. The most important advantage of the model is its moderate cost, and is an instrument with a high performance. disadvantages of 3 models is the "memory» NiCd type batteries: you can charge the batteries only when they are completely discharged. Now draw your own conclusions, how to choose the right cordless screwdriver You know better than anyone else, select the appropriate option from the above written, and do not forget about Safety when working with tool. Good luck in operation, as well as being to leave your reviews!