How to find out the length of the chain of the chain. Shipping parameters
What you need to know about the chain for the chainsaw
The very first thing where the choice of chain for a chainsaw begins is to understand what type you need. The main criterion for classification of chains is a marking relative to the step. The chain step is the distance between the nearest teeth (tails) or between the three rivets of the chain. It is measured in inches and the most popular sizes: 0.325; 0.375 and 0.404 inches. Each type is intended for its needs, and the choice here may be attached to read the instructions for its chainsaw. After all, each saw is immediately developed under a certain step and only professional saws can work with all three types depending on the place of work. To better understand these types, consider them separately.
Before starting, say, another important point: each type of chain is designed for certain capacities of chainsaws and twisting moments. After all, the smaller the step, the less productivity of the chain and you need less effort to move along the wood. And the more the step is, the higher the productivity and you need more strength for work. In addition, the step affects the so.Called “aggressiveness” of the saw. It means not only performance, but also the ease of control. Speaking in simple words, the greater the step, the more the chain “tears” the wood “tears”, which means that it requires more effort to keep the tool. In addition, the larger step of the chain is more dimensions of the links, which means that the incision will be wider, which similarly requires large power costs of the tool. Therefore, buying a chain with a big step for a low.Power chainsaw is not at all practical, you can just “kill” the saw. Think about it! And smoothly proceed to the consideration of specific sizes.
This is the most minimum in the voiced size and often the most common. After all, domestic and semi.Professional, low.Power chainsaws are the most popular among the people, and this chain is for them. Recommended power under the chain 0.325. 3 liters. With. Or no more than 3.5 l. With. If your chainsaw is more powerful, you can think about a chain at 0.375 inch. But everything still depends on the tree and the place of work. If the saw is used for cutting branches and rolling of non.Weed trees or construction work, then 0.325 inches will be more appropriate. This chain makes the work more smooth, comfortable, not so “tears” the wood at the beginning of the saw. And for a person, as well as the engine, such work for these purposes is more appropriate.
Why did we write two digits? It’s simple if 3 divide by 8 get 0.375. And the parameter in the form of a 3/8 fraction is very often used for marking. The reason is ordinary so as not to confuse the numbers 0.325 and 0.375, so we are not surprised if the chain is 0.375 is difficult to find, it is better to look for 3/8 marker immediately.
A 0.375 marking chain is less popular than a 0.325 brand and is used on a 4 liter chainsaws with a power of 4 liters. With. Such a chain is already operated on a roll of relatively non.Weed trees and for cutting wood of medium thicknesses. For their group of unprofessional and professional types of saws, this is the most optimal size.
Chain 0.404 is used only on professional saws. The power of the tool for working with such a chain should be at least 5.5 l. With. Only in this way will the chainsaw be able to show all its qualities of high.Speed strong tools. And such a chain can already easily saw and bring down huge trees. From this it is also clear that for weak saws to use a chain of 0.404 is not profitable. In addition, chainsaws for a chain of 0.404 are characterized by an increased spinning moment, without which it will be difficult for a person and a tool with such a step.
Summing up now is not difficult. The main selection criterion is indicated. This is a marking relative to the step. It is not difficult to understand what is needed in this regard, it is enough to open the instructions of your chainsaw or simply compare the power relative to the above information. But do not forget another important point. The chain step must match the step of the leading and led sprockets (led, often part of the tire). That is, if your saw is intended for size 0.325, then installing a chain 3/8 will not be so easy. Together with a new chain, you need to buy a new leading star and a new tire, otherwise it will be really impossible to work (we repeat, it is impossible due to the difference in the step of the stars). And the latter, we listed three types of chains relative to the step, there are actually five of them (another 1/4 and 3/4, that is, 0.25 and 0.75 inches, respectively), but due to low popularity, especially in everyday life, we will keep silent about two other types.
Now we move on to other important issues to learn how to choose a chain for a chainsaw and professionally understand this topic.
Classification of chains of chainsaws by tail thickness.
The thickness of the tail or more precisely will say the thickness of the leading link. The second parameter of the characteristics of the saw chain. Many perhaps do not know, but the groove on the bus has different width in different chainsaws, similarly and leading links are designed for different tires. They are characterized by five sizes: 1.1 mm, 1.3 mm, 1.5 mm, 1.6 mm and 2 mm (0.043 ”, 0.05”, 0.058 ”, 0.063” and 0.08, respectively). Consider each separately.
This is the most minimum and use such miniature chains only on low.Power household saws. For loads and hard work, such a chain is not calculated.
This size, although not too different from the first, is able to withstand heavy loads. And it is this type of chain that is the most popular in the world. A 1.3 mm tail chains are used not only on high.Quality reliable household chainsaws, but even on semi.Professional devices. Such chains are light and reliable at the same time and most likely, the reader will have to choose this particular type.
The third type, which, along with the previous one is very popular, but already on semi.Professional and professional chainsaws.
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Chains with a leader thickness of 1.6 mm are stronger and therefore used only on professional tools.
And the last type that allows you to use the chain for long under large loads. It is clear that it is possible to meet such a thickness only on powerful highly professional units.
The result of the second paragraph is simple than the large thickness of the leading link, and, accordingly, the wider the groove of the chainsaw tire, the more high.Quality and able to withstand heavy loads. When choosing, it is important to know only one thing. What kind of tire costs, or what width can be used on your chainsaw model. And buying, they just turn off to buy the right type, otherwise it will not be possible to put a new purchase in any way.
The dimensions of the chains
Chainsaws are produced with different lengths of the tire along which the cutting headset moves. You can blame thick trees with only saws, while others are only suitable for trimming branches, billets of firewood in the yard. Tire length is from 30 to 60 cm.
Depending on this, the size of the saw chain is selected.
The size is prescribed in inches, where the following options exist:
If you buy a low.Size saw set in length, it will not be possible to install it on the tire. A longer chain will be dressed, but it will sag, so it will not work to work such a chainsaw.
How to classify saw chains
The quality and speed of the cut depends on the type of saw chain, location and the total number of its constituent links. Manufacturers produce chipper and cheese products that differ in the shape of a cutting tooth.
The first type chains are installed on professional and household motorcycles. She got the name in the shape of a cutting element. The word chipper translated from English means “chopping into chips”. Indeed, sickle.Shaped incisors, rounded from above, allow you to saw at high speed. However, such chains are less effective in the work, since they have increased the area of contact of the cutting edge with wood. It is convenient to drag them, since it is not required to observe a clear angle.
Chisel products (Chisel in translation means “Doloto) are more often installed on professional equipment. A more acute angle of attack of the working tooth allows you to more aggressively crashed into wood, which increases the productivity of the saw, but reduces the cut rate. When sharpening them, it is necessary to clearly display the correct angle.
Details for chainsaws are also classified for its intended purpose. For cutting trees and cutting trunks, a transverse chain is used, the angle of sharpening of the cutting edge of which is from 5 to 15 ̊. For the cut along the fibers we need longitudinal chains, which must be sharpened at an angle from 25 to 30 ̊. The firmly the tree, the sharper it is pulled by a file or machine.
It is customary to distinguish the saw chains by:
- Direction of the saw (longitudinal and transverse);
- Dimensions (length and size of the elements of the chain headset);
- Constructive features;
- The order of the cutting links.
Cut wood along the fibers causes greater resistance than across. In view of the demand for both types of cutting, two types of saw chains are produced. Longitudinal and transverse. They are distinguished by the angle of inciting incisors. As a result, with a longitudinal cut, the performance of the saw increases, and with the transverse, the “aggressiveness” of the tool is smoothed out. Well, together with the latter, it reduces the level of vibrations and the load on the engine decreases.
With low quality requirements, the longitudinal cut can be performed with a motorcycle with a transverse chain.
The tires of chainsaws presented today on the market have various dimensions. One of the main parameters of the saw chain is the number of links, t.E. The length of the chain. In addition, chain systems have a certain step. It is measured by the distance between the three sequentially connected links, divided into two.
Geometry of teeth
- Chipper, which is popularly called “sickle”. It has such a name because of its sickle form. Thanks to the chipper geometry of the saw tooth, it gives high performance, it is easy to sharpen, in which ideal angles are not required to observe. The disadvantages of such geometry of teeth include the possibility of increasing the load on the unit and reduce the cutting qualities of the saw.
- Chisella, popularly called “seed” because of similarity with the same number. “Seven” is mainly used on a grade class tool, on chains with 3/8 or 0.404 inches. The main disadvantages of this tooth geometry are the complexity of grinding and rapid wear when dirt gets in.
In addition to the thickness of the tire, which was mentioned above, when choosing a chainsaw, one more parameter should be taken into account. The length of the tire. It is measured in millimeters or inches. The following sizes are often used: 11 ″, 12 ″, 13 ″, 14 ″, 15 ″, 16 ″, 18 ″, 20 ″, 21 ″, 22 ″.
For simple work, for example, cutting off branches, cutting non.Weed boards, you can use small tires. 11 or 13 inches. The chain on such tires accelerates to high speeds, which affects the performance well. The most universal are the size of tires within 14-16 inches. In addition to using the unit as a bitch, a chainsaw can be used when harvesting firewood (sawing non.Weed logs). To cut a thick log, set tires 18-22 inches. They are usually used on semi.Professional and more powerful, professional chainsaws.
You should not install a larger bus than indicated in the passport to the unit, since this will inevitably lead to an increase in the load on the engine and, as a result, its rapid wear.
The step of the chain of the chain. Table
Taking into account the size of the step, at the moment the chains are not divided by several subtypes:
|No||The distance between the rivets||Chain step (width in inches)|
As can be seen from the table, the chain step is designated as a conventional number (3/4) and decimal. “0.375”. Such a division is caused by the similarity of decimal values - “0.325” and “0.375”, since the difference in one digit created confusion when selecting a saw. Therefore, at one time, a decision was made to establish two different designations: decimal and ordinary fractions.
The step is stamped in the area of the special restraint of the cut depth on each tooth.
The pluses of chains with a big step include:
But it should be noted that a wide saw requires the use of a more powerful engine, which in turn significantly increases the resistance.
The advantages of chains with a small step are:
Advantages are achieved due to a large number of teeth and a small distance between them.
Tech Tuesday #17: Chain Sizing: The Easy Way & The Hard Way
The whole well.Known classification of chains is based on the features of their marking depending on the step, which is designed for certain needs and is made for a specific power of electrical equipment. For a better understanding of each type of step, they should be considered separately.
How to choose
In the case when it is necessary to choose the optimal step of the chain for the chainsaw, it is best to take into account the recommendations of the manufacturer and already based on them to choose the type of saw.
If the manufacturer’s recommendations are not known, then you need to choose by engine power. The recommended values corresponding to a certain step, we provided a little higher.
Important! When choosing, do not forget that the distance between the links is not the only parameter to pay attention to.
It is also worth selecting the thickness of the link, the type of cutting tooth, the number of links. Productivity is more dependent on the angle of sharpening, the depth of the cut and the shape of the tooth of the limiter. The more acute the restrictive tooth, the higher the cut rate, and below its quality.
Below we suggest watching a video about choosing a chain of a chain of a chain. The video tells and shows how to determine it for which chainsaws, which chain step to use.
Types of sawing. Transverse or longitudinal method
Chainsaws with chains for cross.Cutting wood are in demand. Longitudinal sawing is needed in rare cases, but if it is necessary to use such a headset, it must be borne in mind that such materials are more expensive than ordinary. The difference between the methods in question is that for longitudinal circuits the angle of sharpening is 5-10 degrees. For transverse models, the angle of sharpening corresponds to a value of 25-30 degrees. You can clarify this information on the design of the saw headset.
If the saw saws crookedly. Reasons and what to do
Often, sawmiths are faced with the fact that at one moment the saw begins to saw crooked. This causes not only inconvenience, but also complicates the treatment procedure. The sawmill has to make efforts not only to keep the tool, but also to equalize it. Few people know that it is prohibited to operate a tool with such deformation. We will find out what is the cause of the uneven sawing of the chainsaw, and what is dangerous for the sawmill.
If the saw begins to cut crookedly, then this indicates the presence of an inconspicuous deformation of the tire. The deformation is associated with the side of the tire, which has uneven wear. As a result, the chain is located not evenly, but with a slight skew. The skewing value can be invisible to the eye.
It is interesting! The cause of the uneven sawing of a chainsaw may be uneven wear of the link links or their incorrect sharpening. Before replacing the tire, make sure that the chain is working.
Eliminate the malfunction in the form of uneven wear of the tire can be replaced. It is almost impossible to carry out uniformly grinding sides of the guide, so it is recommended to replace it with the chain. The danger of the exploitation of a deformed guide chainsaw is that the tail of the chain can jump out of the groove, which will entail not the most prosperous consequences.
The tire of the chainsaw, like the chain, experiences heavy loads, so its wear is observed. With wear, it is important to replace the part in a timely manner without waiting for adverse consequences. How to choose, and what to consider when buying a tire on a chainsaw, is described in detail in the material.