The mechanism of the chain electric saw
The saw is an unusual inventory in the farm , who often used when cutting branches in the garden, sawing wood and carpentry. A close and usable tool does not ask for the knowledge and skills of an appeal with an internal combustion engine. At first, the manual models of chain saws were massive enough and heavy. It is logical that the emergence of electronic chain saws for the market between most consumers was received with enthusiasm. In addition to ease of operation, a significant advantage of the power tool will be that it is environmentally safe, since it does not emit exhaust gases during operation. It is especially important to be sawing materials in a confined space.
The main constructive elements of a chain electric saw are:
the motor in the casing;
oil pump with oil reservoir. In the near future, some manufacturers equip the model with centrifugal clutch, thus preventing the breakdown of the electric motor and the reducer of the saw during turning time. Electronic models of chain saws are famous for a long service life, which is obtained due to the constant lubrication of movable parts during operation.
The chain oil located in the special tank through pump pumping is supplied to the tire from which the mountain passes according to asterisks and a cutting blade. Some models have a function of adjusting the intensity of the lubricant, which allows you to do with materials of different hardness.
The average capacity is 120-200 ml. This volume is enough for 2 hours of continuous work. The task of the operator in the book, in order to keep under control the height of the oil in the tank, if working,"in a dry"motor quite quickly overheating and the gun will fail.
For the sake of simplification of the task of monitoring the volume of water, manufacturers make transparent transparent inserts in the housing or foresee the presence of a special probe.
Household or professional tools?
Like any power tool, a chain electric saw is presented for the market by household and professional models. Professional tools are more powerful, which allows them to be taken without stops for a longer time. They are better to be selected as often as necessary for use. Most of the professional models are equipped with a function to maintain a constant number of engine revolutions, as well as vibration protection and comfortable handles. The only defect of profiled chainsaws is their high value, which is often a couple times higher than in household counterparts.
Household chain saws are more designed for short-term work. The time of the continuous operation of the instrument is limited to 10-15 minutes, then the expiration of which should be paused, giving the engine a"rest." The usual structure of these models and the use of being cheap materials makes it possible to greatly reduce the dignity of household chain electropiles div>In order not to lose, before trying to choose a chain electric saw, determine the magnitude of the intended work and the frequency of use of the unit. If you need a tool for seasonal work for the dacha, you are allowed to limit yourself to the household option.
Characteristics of choosing a high-quality electric saw
The current bazaar offers a spacious selection of models. Between the recognized brands of well-proven manufacturers are more popular: Bosch, Sparky, Patriot ... There are also the least popular brands, which often do not concede according to the presented functions. Consequently, it is worthwhile to be able to choose the chain electric saw not only only the advertised brand, but also the operational properties of a certain model. <
Parameter #1 - position and power of the motor
The 1st, for which one should pay attention to be the choice of tool - motor power. This parameter depends not only on performance, but also on its longevity.
If the power surges in your power grid are quite often, choose a better gun with sufficient power supply. The engine of such a chain electric saw must not overheat by lowering the voltage, giving out the rated power. Мощность мотора цепных электропил бытового варианта может варьироваться в границах 1,5-2 кВт, а проф – добиваться 3,5 кВтSpecialists are advised to choose models equipped with a thermal control system to be unstable, which the gun is switched off automatically. The thermostat is activated if the temperature of the motor winding reaches the set threshold. However, it should be taken into account, which is extremely frequent switching off in the criteria of unstable voltage, and the productivity of the unit is reduced.
If to be recognized for the position of the motor in the design, it can exist:
- The motor axis is perpendicular to the width of the unit, and its center of mass is slightly shifted. To work with such equipment will have to help balance unceasingly. Very comfortable to do with it in the vertical plane, if you carry a cut from top to bottom.
Longitudinal - the structure is a straight line, to which all components are perfectly balanced. Such a constructive verdict ensures good balancing of the canvas to be bent, giving the tool greater maneuverability.
Saws with a transverse arrangement of the motor are designed for general introduction. The power of such tools varies in the region of 2 kW, and the piece does not exceed 4 kg.
The saws with the longitudinal arrangement of the motor are not subject to carpentry. The lack of a protruding motor from the side simplifies the work with inventory, aggregate, the meaning of which can achieve 6 kg
Through a lot of weight, your hands will quickly get tired, and therefore it is not very comfortable with such inventory to manage several hours of continuous work - it's worth taking into account.
Parameter #2 - adjusting the tension of the chain
Low-profile chains are used for the manufacture of power tools. Although they have the least performance, they are not bad for the fact that the tool is subjected to the least vibration, making it more safe to operate. Proper tensioning affects performance and safety, therefore, when using the chain of an electric saw, it is often necessary to correct
On sale there are models in two versions of the chain tensioning: <
Traditional - for the sake of tensioning the chains, the screws fixing the busbars are loosened and they are neatly shifted with a flat screwdriver.
Lite - the chain tension is achieved by loosening the nut and displacing the tire through the slider.
Lubricating the saw blade the unit in modern models is carried out by means of the oil pump by the automatic machine. The pump is driven into operation at the start with the saw engaged. This greatly simplifies the upbringing of the unit. The task of the owner of the drink - to keep under control the height of the oil water and pour it if necessary. The presence for the side panel of the lever allows you to effortlessly adjust the tension, the order is comfortable with those that do not require the introduction of special tools.
Parameter #3 - bus length
frame, for which a mountain is fixed, can own different modifications. The length of the tire is directly related to the power of the tool. It can achieve 30-45 cm. Taking into account that for a suburban area it is unlikely to scold thick logs, a 40 cm long frame is considered a good option for the sake of economical work. Tools with a longer tire will be much heavier, stronger and, as it should, more expensive.
The shearing property is dependent on the thickness of the cutting blade. For the sake of household tools, the standard tooth protrusion is 3/8 inches: the thicker the mountain is, the stronger the motor must be.
Different types of chains and tires may be installed for the saws of different manufacturers . With the passage of time, movable elements will grow old and seek substitution. Therefore, in order to prevent difficulties in finding the details, choose power tools with more common type of circuits.
Parameter #4 - smooth startup
The systems of starting and braking the motor - the most extreme operating modes of the unit. The prerequisite for this is the fact that in these moments, shock currents of the current pass through the winding of the motor, Much simplifies the work and protects the engine through extreme loads, the order of smooth start-up, which limits the starting current, allowing the motor to reclaim evenly.
No matter what kind of electric saw for the sake of woodwork is a potentially terrible tool. Therefore, it is unreasonably proud to protect yourself by possible accidents in the process of using the inventory.
When choosing an electric tool, pay homage for the presence of a random lock. It protects you through threats in the event that you are not comfortable taking up the tool with one hand or then you found the inclusions that are not ready to work with it again.
To be able to work with a chain saw, an extraordinary risk can describe a"kick back". It appears at the moment of contact of the end of the tire with the hard surface of the lumber, as a result of which the implement is soon thrown back, and its moving mountain can injure the operator.