How to choose a good and inexpensive chainsaw
Gasoline chainsaws can significantly speed up the process of construction or landscaping. Professional-grade machinery has long been the main tool for logging or erecting wooden buildings. Household chainsaws are used for the production of small works in the garden. To buy a chainsaw, corresponding to the task, you need to understand, which mean the technical characteristics of the unit. The advice of our experts will help to understand, how to choose a good chainsaw for your home or cottage, commercial or industrial activities.
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types of chainsaws
According to productivity and resource gasoline chainsaws are divided into household, farming or semi-professional and professional. Contrary to misconceptions, the length of the saw blade and the volume of the motor do not always determine the class of the tool, although give a certain description of the capabilities of the unit. Inexpensive household saws with a tire nearby are on sale 40 cm or compact tools with a bus in 30 cm, equipped with a reliable and durable engine. So, when choosing a chainsaw for home or professional activities you need to pay attention not only to technical data, but also on the manufacturer and cost.
Household
Domestic chainsaws have a compact design, small size and sometimes low ergonomics. This is a tool for a small amount of work, which is suitable for home use: formation of the crown of fruit trees in the garden area, harvesting firewood for the house or bath, carrying out small construction works. The resource of household beers rarely exceeds 20 hours of work per month, which is approximately 40 minutes of operation per day.
farming
Farm chainsaws are designed for similar types of work, but to a greater extent. They are more convenient, can be equipped with various anti-vibration systems and safety features, but you cannot use a tool of this class full time. Semi-professional saws are suitable for firewood, construction and improvement of the adjacent territory.
professional
Professional chainsaws are always equipped with various protective functions and are designed for long-term operation even in the harshest conditions, example, for the forest industry. This class includes large chainsaws with powerful, durable engines, who work flawlessly on 10-12 hours per day. Naturally, it is not rational to buy such a tool for small works on a homestead plot: its potential will "stand still", and you - to feel considerable physical activity from the unit weighing in 10-15 kg.
Criteria for choosing a chainsaw
The main criteria for choosing a reliable chainsaw are its technical features:
- engine power and volume
- bus length
- functional equipment of the saw
- design features (crankshaft, oil pump, dimensions, mass)
The class of the chainsaw is also taken into account, motor resource and, Of course, ease of use. In most cases, you should choose a model of lower weight and small size, equipped with various systems, which facilitate engine start-up and operation:
- decompression valve
- Soft start
- convenient mechanism for changing the saw headset and chain tension
Before, how to choose a good and inexpensive chainsaw, it is recommended to clearly define the future scope and specifics of the work. To solve many problems in the garden or in a private home is sometimes quite simple Chinese-made models.
power
Engine power determines the sawing speed. This characteristic depends on the class of saw and types of work, for which it was designed. The value is measured in horsepower or kilowatts (c.. or kW). Choosing a saw for power, should focus on her class.
Gasoline units at the household level are inferior in parameters to chainsaws of another class, their power rarely reaches 1,8 — 2,0 kW or 2,5 c.. However, this is enough to harvest firewood, sawing twigs and small trees or sawing building materials.
The farm grade chainsaw is somewhere between a top and an amateur model, the power of such a saw varies within 2-3 kW or 2,5 — 4 c.. This is due (most often) long tires, in accordance, greater productivity.
Professional chainsaws for power start from 3 kW or 4 c.. and above. Models with a small tire in 16-18 "Have an average value, the power of the saw with a bus 20 "can reach 6-7 kw (9,5 c.c.)
If in the technical data sheet of the device the power is specified only in one unit of measurement (kW abo k.s.), values can be converted to another by formulas:
1 c.. = 0,74 kw
1 kW = 1,36 c..
Experts recommend choosing dust with a small power reserve, so that the tool does not work on the border.
The main parameters of the choice of chainsaw tires
The size of the saw set of the unit determines the maximum depth of sawing. According to the rules in the technical passport indicate the maximum length of the tire, but the user can install a canvas of shorter length.
Tire characteristics:
- length - from 12 to 20 inches;
- the size of the leading and famous stars, determine the characteristics of the chain.
It is easy to calculate the required length of the saw blade, it is enough to evaluate future types of work, to be held. However, it is worth paying attention to its characteristics, so as not to face the problem of circuit selection in the future.
Most chainsaws with headset up 16 "Have standard parameters: 3/8 chain pitch and groove width 1,3 mm. It is very easy to choose a chain for such a headset, they are produced by all brands. Some Makita saws have a groove - 1,1 mm. The standard for longer tires is chain pitch 0,325 «. Acquisition of the unit with other indicators is justified only in those cases, if consumables are always available and presented in a good range.
Modern saws are often equipped with a headset with adjustable chain tension. Such tools are easier to operate, as adjustment of equipment is carried out without use of additional tools.
Good chainsaws have a competent combination of technical characteristics: the longer the tire, the more powerful the engine. The use of a long saw blade on a low-power model leads to rapid wear of the entire mechanism.
What you need to know about chainsaw chains
The chain is a tool for all types of devices. There are three types of chains:
- for longitudinal sawing;
- for cross-cutting;
- for sawing frozen wood or concrete structures.
Chainsaws for transverse or longitudinal sawing differ in the angle of sharpening of the link: 20, 30 and 35 degrees. The average value is considered universal, this equipment is suitable for any type of saw, links with a 20o angle are used for longitudinal cuts, and from 35o, respectively for the transverse.
Saw chains for sawing frozen wood are often used for concrete work. Such equipment is an order of magnitude more expensive and differs in the presence of carbide solders on the links.
Chains for chainsaws are chosen not only for price and quality or purpose, but also on technical characteristics. The parameters of the appropriate equipment are indicated in the passport to the tool. To choose the right chain it is enough to know the number of links, chain pitch and groove width.
Engine capacity
The power of the tool depends on the engine capacity of the chainsaw, the parameter in cm is measured ?. Users rarely pay attention to this feature, after all, it is largely determined ??manufacturer. However, there are models of equal power and different engine capacity. This is similar for the reason, that some manufacturers overestimate the actual performance or indicate the value, obtained by testing chainsaws in ideal production conditions. However, a small deviation in 0,1 — 0,2 kW is considered normal.
The ratio of engine capacity and saw power:
- 23,6 cm? — 1,0 kw;
- 31,8 cm? — 1,5 kw;
- 40,2 cm? — 2,0 kw;
- 59,0 cm? — 3,5 kw;
- 70,7 cm? — 4,0 kw.
The values are taken from the technical description of gasoline saws from Stihl.
crankshaft
The main part of the piston system of the engine is forged or stamped. Forged crankshaft, unlike stamped, has a large working resource, this type of part is installed on most quality chainsaws. However, among the inexpensive household models there are saws with stamped, at the same time the smaller resource is caused by a class and purpose of the tool.
Oil pump
The oil pump is responsible for supplying lubricants to the chain. Usually, the lubrication system in modern models of chainsaws is automatic, that is, the oil is fed to the chain only during operation.
There are regulated and unregulated types of pumps, the first type is the prerogative of professional technology. The operator can set the optimal oil supply settings according to the operating specifications. in addition, oil pumps differ in the type of material used: plastic or metal. The metal has high strength and durability, but increases the final cost of the unit by an order of magnitude.
Before buying it is better to specify what material the oil pump is made of, as it depends on its service life.
mass
The weight of the chainsaw determines the maneuverability of the tool. For some types of work, this figure is key when choosing a chainsaw, example, when sawing the upper branches of trees, when forming a crown or when sawing grooves in the wood at a height, during construction.
"Dry" weight of the saw - the weight of the engine and housing with handles, the weight of the chain should be added to this value, saw blade and fuel mixture.
Household models have the least weight from 2 to 5 kg. Semi-professional weigh from 5 to 8 kg, the heaviest - professional units, the mass of which sometimes reaches 12-14 kg.
resource
Depending on the class of chainsaw, its mechanism has a certain resource - operating time, after which the engine needs major repairs. In general, the concept of "resource" has no definite dimension, but it is customary to focus on the number of hours. To some extent, the life of the saw depends on the power, but this does not apply to "noname" brands and the whole household class, where medium-deep models are not uncommon. Naturally, household appliances have a lower resource, in professional technology - above.
However, this parameter of the chainsaw is influenced by a number of factors:
- mode of operation;
- timely maintenance;
- the quality of fuel used - when choosing oil for the chain and fuel should be guided by the manufacturer's recommendations.
So, careless attitude to the rules of operation of chainsaws will significantly reduce the life of even a professional unit, and the household model can be completely out of order in a couple of days.
Operating mode
The mode of operation includes various features of operation of the gasoline tool. Example, continuous operation time, certain class of chainsaws. Ignoring the recommendations of experts leads to overheating, premature wear of all major engine components.
There are also different modes of operation for previous seasons: summer and winter. Professional saws often have special settings for setting the mode, corresponding to the outside air temperature. Household and semi-professional models can not boast of such equipment. The use of such equipment at different times of the year implies proper maintenance and preparation of the tool for work.
No less important functions
Household versions rarely have special functional equipment, unlike professional or farm models, in which various technologies or additional options are often implemented.
- Anti-vibration system. Vibration damping technology is very useful for tools of any class, but most often implemented in professional models. The simplest system is the presence of rubber shock-absorbing gaskets between the handles and the body of the chainsaw. More sophisticated technologies are superior to others in reliability and are achieved through a well-adjusted ratio of unit weight and engine power. Such technology is a damper, located between the engine and the handles.
- Backlash protection. When in operation the chainsaw jams the chain or the equipment "meets" the high-strength surface, the operator may receive a strong inertial shock. To protect users, manufacturers are implementing a special system, which stops the rotation of the motor and chain in a split second. For maximum safety, the operator's protection against backlash with a saw is implemented in two versions: additional key on the top of the handle and front brake. So, if the tool is abruptly pulled out of the hands or moved forward, both protection systems are activated.
- Filter design. For stable and correct operation of the chainsaw engine, the air filter must be cleaned regularly. The specifics of operation implies the constant formation of dust and small sawdust products, which increases the intensity of contamination of the filter element. First of all, when buying you should pay attention to the design of the filter, how difficult access will be, what additional tools will be needed for disassembly. Also, a number of professional gasoline beers are equipped with a carburetor with a compensator, which responds to the volume of air supply and independently regulates the composition of the fuel mixture. So, even a clogged filter will not cause rapid failure. Household models are not equipped with such technologies.
- Soft start. Smooth and easy start of the chainsaw engine is the pump of pumping of fuel mix (it is also called a primer). The system allows you to reduce the effort when running on 50-70%.
- Fuel tank volume. This is a very important design feature, which determines the maximum time of continuous operation. For household models, value rarely plays a big role, because low productivity always means short continuous operation and frequent pauses. Professional saws are almost always fitted with powerful and durable high-capacity engines, in accordance, the volume of the fuel tank is significant - up to 1 l.
Which company's chainsaw to buy
When choosing a saw for value for money you need to focus on one of the best manufacturers. Well-known and large enterprises have solid experience and their own patented developments, providing its customers with a quality and reliable tool. Most of the Russian market is occupied by European brands, whose products are highly reliable and expensive. When the choice on the principle of "good and expensive" is unjustified, you can choose an inexpensive chainsaw from Asian manufacturers, among which there is a circle of brands with a good reputation.
The most reliable manufacturers of chainsaws, according to customer reviews, it:
- Stihl
- Husqvarna
- Echo
- Makita
- Huter
We offer you to get acquainted with the rating of the best chainsaws for home and cottage by following the link https://tehcovet.ru/reitingi/dacha-i-sad-reitingi/luchshie-benzopily.html
conclusion
Now you know, what characteristics will be a priority when buying the optimal saw model, which is influenced by technical data and design features. Making decisions, which chainsaw to choose for home use, you can read user reviews on the forums. Experienced owners often give useful advice and recommendations, and also reveal some pros and cons of certain models.
