How to choose a better chain for chainsaws. The value of the chain chain step is the chain step and how to determine it

The chain is a key element of any chainsaw. From type cutting toolmounted on the unit depends on the quality and speed of working during sawing wood. For beginners, chainsaw selection saw chain It seems a complex process, since you need to know which kinds of this detail, its characteristics, etc. The article will consider the main factors that should be considered to choose a good chain for chainsaws.

Those who faced sawing wood know that it can be cutting it either along the fibers or - across. Based on this, produced different types chains for chainsaw: for transverse or longitudinal cutting Woods. In both cases, the difference in the resistance of the material will differ significantly. For longitudinal sawing, the teeth are sharpened at an angle from 5 to 15 °. Transverse cuts requires tool sharpening at an angle of 25-35 °. The figure below shows how the sharpening angle of teeth is determined.

What type includes a saw element, you can learn from the marking on it, besides, the sharpening angle is determined visually.

Chains for longitudinal sawing are used extremely rare, because much easier to dissolve the workpiece on circular. Due to low demand, manufacturers of this tool are not particularly engaged in its improvement, and finding a chain for longitudinal sawmills is quite difficult. Most chainsaw customers choose a tool with a transverse type of cut, and it is the most popular both among professionals and homemade masters. But, before choosing a chain for chainsaws, the basic parameters affecting the performance and quality of the tool work should be studied.

Existing Chag Sizes

Chain Step - Key Parameter requiring special attention When choosing a cutting element for chainsaws. It is measured in inches and is defined as the gap between the cutting links or the gap between the three rivets of the saw element. The following image clearly illustrates how the chain step is determined.

Each saw is characterized by an individual chain step.

It is worth noting that the profication tool works with any chains.

Chains with a certain step are always intended for units of a certain power, taking into account torque. A decrease in the step not only reduces the performance of the device, but reduces the load on the engine. Conversely, with a large step, the productivity of the device increases, but the power is required more.

In addition, there is such a thing as "Aggressiveness" of the aggregate. IN this case This refers to the simplicity of control. Than step more, the greater power The teeth "rut" wood. In addition, due to the large sizes of the cutting links, the width of the cut will increase, which means that the operator will need to make more efforts to hold the apparatus in the hands. Based on the above, use the chain on a low-power unit with a big step, because in this way you can bring the device into disrepair.

Step 0.325 inches

This is the minimum step value, but, nevertheless, the most common. Silent elements that have this step are usually installed on amateur and semi-professional units that have a small power - in the range of 3-3.5 hp. This is enough to disappear bruises without work, throw thin trees, perform small construction works. The chain with a step of 0.325 inches smoothly, without vibration, does not "tear" wood, does not overload the engine and does not tire the operator.

Step 0.375 or 3/8

Marking may look like decimal or ordinary. There is no difference between these symbols: three divided by eight will turn out 0.375. The ordinary fraction in the marking is designed to exclude confusion between the numbers of 0.375 and 0.325.

For this reason, there are cases that it is difficult to find an element in a step of 0.375 inches. If so, then try to search the same item with a 3/8 marking.

These chains are installed on more powerful units - having 4 hp Such pylines can cut the trees of medium diameter. Chains in a 3/8 inches increment are installed on semi-professional chainsaws and aggregates of the pro.

Step 0.404

Saws with such a step are installed only on professional aggregates With a capacity of at least 5.5 hp Saw with a step of 0.404 inches you can cut the trees of any thickness, and the aggregates under this cutting element have a large torque, which greatly facilitates the work of a person.

It is important to know that the chain step always corresponds to step asteriskboth driven and leading. It follows from this that if the documentation for the device states that it works with a chain having step 0,404, then it should not put a chain on a chainsaw with a step 3/8. Before installing the circuit with another step required to purchase full set, comprising both the tire and both stars: lead and led.

In addition to the above step values, there are two more: it is 1/4 (0.25) inches and 3/4 (0.75) inches. Saws with such a step are little popular, both among professionals and home masters.

Most thickness (tail)

This parameter is the second most important when choosing a saw element. Should know that different brands Chainsaw tire will differ in width. Leading links are also intended only under a certain type of tires.

Leading links are the following sizes.

1. 0,043 "or 1.1 mm. This is the smallest leading link. It is usually established in miniature circuits that are designed for "weak", household units that are not intended for large loads.
2. 0.05 "or 1.3 mm. Although the difference with the previous example is a minor, the cutting element is designed for more tangible loads. Chains with a link of 1.3 mm are most common among owners of household and semi-professional chainsaws, have a small weight and quite reliable.
3. 0,058 "or 1.5 mm. This type The saw is not less popular than the previous one, but is already used not only in the semi-professional instrument, but also in the Class Profi devices.
4. 0,063 "or 1.6 mm. Chains with such a thick tail are more durable and put on the tool for professionals.
5. 0.08 "or 2 mm. This size is completing among the types of leading links. The chain is designed for long-term operation and serious loads. It is not difficult to guess that the element is used only on highly professional chainsaws with high power.

As a result, the greater the thickness of the leading link, the stronger and the quality chain, and the larger loads it can withstand. But, choosing a cutting element, you need to be checked with the instructions for the machine where it is indicated how the bus is allowed to install on it.

Depth of cutting and profile height

From how high the profile of the chain depends on the depth of the cut. The profile is higher, the stronger the chain in the material is "brazed", and as a result, the tool performance increases. With a low profile, a thinner chop is removed, and the chain is not so deeply immersed in the material. Typically, the depth is regulated by the action of the limiters that are located on each cutter.

There are the following profile sizes:

• high profile - 0.03 "(0.762 mm);
• low profile - 0.025 "(0.635 mm).

This information can be found in the chainsaw documentation. These types of profiles are installed on amateur and professional aggregates. But it should be aware that the proficular tool cannot always be equipped with high-profile chains, and the household tool is always equipped with low-profile cutting elements.

High-profile chains - These are the most productive elements, and therefore have increased "aggressiveness" and in addition to tangible vibration. The latter significantly reduces labor productivity, since it does not allow working with an aggregate for a long time. Therefore, manufacturers found golden middle: With a large step, a low profile chain is manufactured, and vice versa, if the step is less, then the profile is high. These changes are removed as much as possible side effectsThe unit begins to work with less "aggressiveness" and normal performance.

What profiles are better to say difficult. When choosing, you should always be focused on the alleged working conditions, hardness or viscosity of wood, etc.

Cutting links have 2 types of profile.

Tire size

In addition to the thickness of the tire, which was mentioned above, when choosing chainsaws, another parameter should be taken into account - the bus length. It is measured in millimeters or inches. Often used tires of the following dimensions: 11 ", 12", 13 ", 14", 15 ", 16", 18 ", 20", 21 ", 22".

For simple work, for example, cutting of boring, cutting of lackless boards, can apply the tires of small sizes - 11 or 13 inches. The chain on such tires is accelerated to high speeds, which good affects performance. The most universal are the sizes of tires within 14-16 inches. In addition to using the aggregate as suchkoresis, Chainsaws can be used when bilking firewood (sawing lamb logs). To cut down tolstoy bus, 18-22 inches tires are installed. They are usually used on semi-professional and more powerful, professional chainsaws.

Do not set the larger bus than indicated in the passport to the unit, as it will inevitably lead to an increase in the load on the engine and, as a result, the rapid wear.

Chain size

This parameter always depends on tire sizeinstalled on the unit. If you accidentally purchased a smaller chain than your tire, it will not work out. If this item will have size exceeding the size of the tire, you will not be able to tighten it. Both options do not allow the use of inappropriate chains. They are usually indicated in inches and have the following meanings: 10 ", 12", 13 ", 14", 15 ", 16", 18 "and above.

The chain length is determined by number of links. Under the links are meant the connecting links that enter the tires in the grooves, and not cutting teeth. When buying, you can specify the seller or the length of the part in inches, or the number of links included in its composition. Some manufacturers instead of the length indicate exactly the number of units in the saw element. As a rule, this number does not depend on the thickness of the tail, step and the height of the profile. For example, a low-profile chain having a thickness of the leading link 1.3 mm may consist of both 72 links and 56 units or other quantities.

The order of the cutting links

In most cases, the order of placement of the cutting elements can be three species.

Cutting links are the main elements of the saw chain and have a high cost due to complex process manufacturing. Manufacturers, changing the order of the cutting teeth, reduce their number and thereby reduce the cost finished product. But at the same time, due to the skills of the links, the efficiency of the instrument is noticeably reduced, and the chain is faster than wearing.

Carbide chains

Wins - this is a very solid alloy, superior to the strength of the glass. Therefore, household glass cutters, various cutting plumbing and turning tools, and they are applied to the saw chains of chainsaws. Wins soldes on the cutting links, where it acts as strong cutting edge. But despite its hardness, this alloy is fragile.

The service life of the attack chains from winning significantly exceeds the resource of standard cutting elements. Carbide chains are used for sawing with frozen and solid wood, as well as in emergency and rescue activities, if it is required to quickly cut a reinforced or ordinary concrete.

The disadvantages of carbide chains include their high cost, exceeding the price for conventional cutting elements several times.

Chains for chainsaw with victorious attacks in amateur practice are used very rarely, as they are intended for a semi-professional and professional tool that has good power and high torque.

Best chain brands for chainsaw

According to the reviews of these aggregates, a chainsaw rating was drawn up. Below are manufacturers that produce the best chains for chainsaw.

1. Stihl.he is a very famous Swiss brand that produces high-strength chromonichel steel chains. They are not stretched when heated as ordinary. This is achieved through the use of a special hot riveting method in the production of a special method. In addition, this manufacturer patented the lubrication method - "grooves", which are supplied with all the leading links.
2. The company is not engaged in designing chains, but produces them using the best patented technologies. Due to this, high quality products is achieved. The company also provides a large list of services to customers, providing warranty service of its products. In addition, the company's clients have the opportunity to purchase original spare parts for mechanisms.
3. Oregon. He is a division of the company Blount Inc. The company is considered one of the best among firms producing sawn elements for chainsaws. Also oregon produces various accessories and spare parts for other well-known brands tools. The chainsaw saw elements are made of a special patented alloy, and the chromium alloy is applied to the teeth. To facilitate the sharpening process on the teeth, labels are applied, indicating how the angle must be made of this operation. In addition, the chains have a system that allows you to reduce vibration and the original design, thanks to which the lubricant is distributed evenly.
4. Carlton. He is a company from America. All elements of the chain of this manufacturer have increased hardness, as a shot blasting processing is held at the manufacturing stage. Cutting links have a long edge, due to which it becomes possible to produce a large amount of sharpening.
5. Windsor. The company patented a superproof alloy, which is characterized by high heat resistance and is not exposed to stretching. In the saw elements of Windsor to ensure high reliability, stamped links and stamped rivets are used.
6. The chain is made of alloy steel with chrome-plated teeth. The latter are sharpened in a special way, and a hypoid lubricant is applied to the chain that facilitates the sawing process. Also, the company also uses the method of shot blasting hardening in the manufacture of chains, increasing the strength of the links.

The choice of gasoline saws is determined by several criteria. One of them is the chain step chainsaw. This parameter defines the capabilities of the equipment of the sawing of the materials and must correspond to the engine power, only in this case it will be possible to extend the life of the tool and reduce the specific consumption of fuel.

The concept of step and its meaning

Under the circuit's step implies the distance between any three rivets. In chains for saws, this length characterizes the remoteness of two cutting teeth relative to each other. The step value is equal to the length between the vertices of two adjacent chain shanks (guide elements that are included in the tire grooves). In order to correctly determine the step of the chain chainsaws, measure the distance between the axes of three rivets flowing in a row.

There is a reasonable pattern, which states that the larger the distance between the cutting teeth of the chain, the deeper they enter the sawn material. Increasing chain chainsaw, you can increase its performance. In this case, respectively, an effort is changed to rotate the drive asterisk. It is required to understand that the higher step, the more power You need to apply for its broach during the sawing of the material and the greater the engine power should be.

Modern producers of gasoline saws use three main types of sawing chains with the following steps, measured in inches:

• 0.325;
• 0.375 (apply in the classification labeling 3/8);
• 0.404.

The quality and accuracy of the required cut in the material depends on the chain step. If the quality of cutting during the operation of the chainsaw has no global value, then the accuracy of the cut is sometimes important when there is a log of logs or boards, for this you need to take into account the dependence of the saw step on the dissolution of wood on specified marking.

The selection of the chain indicates that the step between the teeth is directly proportional to the performance, the power supply of the motor and inversely proportional to the accuracy of the cutting created.

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Matching engine power and distance between cutting chainsaw chains

Based on the data obtained by experimentally, it is recommended to choose chainsaw, considering the ratio of the power of the drive and the distance between the cutting edges. It is known that the higher the step, the more power you need to apply to rotate the drive asterisk and the greater should be the maximum torque developed by a gasoline engine.

To properly select the desired tool configuration, you must use the minimum power values \u200b\u200bfor each of the three chain steps.

Critical indicators of power of gasoline engines rotating drive:

• step 0.325 "- Power of at least 1.8 hp (1.47 kW);
• step 3/8 "- Power of at least 3 hp (2.21 kW);
• step 0.404 "- Power of at least 4.5 hp (3.31 kW).

If the power of the leading engine is less than the specified values, then the following phenomena are possible when the RPPC process is possible: the chain is entered in the tree, the reduction in the speed rotation rotation, leading to the overheating of the motor, increasing the time of sawing and increased operational expenditures on fuel.

The use of powerful chain engines with a small step is inappropriate, as it will also increase the dissolution time and an increase in fuel costs. However, this combination is allowed with the need to make accurate works with wood.

Specified minimum values \u200b\u200bof the characteristics of the drives show the ability of confident equipment, but do not show the time of its uninterrupted use in a professional environment. Rather, these values \u200b\u200bare given as recommendations for the implementation of episodic works or for the operating conditions of the tool with long interruptions. For long-term use of equipment that means professional regime, the following compliance of technical data is required:

• step 0.325 "- Power 2.5 hp (1.84 kW);
• step 3/8 "- Power 4 hp (2.94 kW);
• step 0.404 "- Power 6 hp (4.41 kW).

The choice of the tool should not be justified by the desire to have the highest possible step of the chain, so it entails the presence of a powerful motor, long tire, which significantly takes the saw.

And if it, for example, will be used episodically or for dacha workthen such a choice is inappropriate.

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The dependence of the step from the additional characteristics of the saw chains

During the movement of the chain and cutting wood, it acts very high loads, in connection with this important characteristic, the thickness of the element of the link included in the groove of the tire and sliding in it. This value also shows the thickness of the fastening elements of the links. It can be measured by an ordinary caliper.

Typical values \u200b\u200bof the thickness of the guide element:

• 1.1 mm;
• 1.3 mm;
• 1.5 mm;
• 1.6 mm;
• 2.0 mm.

Thickness 1.1 and 1.3 mm are used to make the entry-level chains designed to carry out minor work. Most often the length of the step at these values \u200b\u200bis 0.325 ", which implies gentle mode and low loads.

1.5 mm value - the most occurring chainsaws and components in the market, this value is enough to provide safe job With step 3/8 ". However, this value will always say that the chain is not intended to conduct professional activities.

Guides that have thicknesses 1.6 and 2.0 are designed to keep the most complex work, That is, allowing the use of equipment. At the same time, you need to know that these two values \u200b\u200bare a specific classifier indicating that the metal for the manufacture of these chains is paid from special steel grades, that is, enhanced in the design of increased strength.

All manufactured chains may differ from the cutting depth. It is characterized by the height of the cutting tooth (profile). The height is measured between the upper shelf of the cutting edge and the limiter (all this is on the same segment). There are low-profile and high-profile chain products.

The higher the profile, the higher the entrance to the wood and, respectively, the speed of sawing. The profile height affects the occurrence of vibrations that can cause elevated drive wear or the problematicness of the tool hold in their hands, the higher the cutting part, the stronger the vibrations are. Also, a high-profile chain requires increased engine power.

Household chainsaws always have a low profile chain. Professional devices combine different variantsBut always adhere to the fact that if the chain is with a big step, then its profile is low, and if step 0.325 profile makes high.

Such variations create the opportunity to increase the cutting speed not with a step, but a profile height (propyl depth). Nevertheless, most of the professional tools for the forest rolls make an emphasis on increasing the step, not the profile height, arguing that chainsaw in such an option is more controlled.

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Some important moments when choosing chains or chainsaws

There are other indicators that affect the productivity of the instrument and the specifics of the work.

• geometry of the cutting tooth (profile);
• number of cutting units;
• type sharpening the cutting edge of the link.

The cutting profile has two types: Chisely and chipper. The first option has a straight work surface and is more productive. The second type has a gray-shaped form and reduced performance. In maintenance, the chipper chain is easier, as it is easier to sharpen it, it does not need hard observance of sharpening angles. Chisel options are more often applicable in 3/8 and 0.404 increments. "

The number of cutting teeth is always determined by their relation to the number of guides of the saws included in the tire. That is, the link with the cutting part has two link guides. If this combination is not observed, this means that the chain of dubious production.

The type of sharpening cutting profiles is regulated by the type of future work. Usually, classic chainsaws are used for cross-cutting wood and extremely rarely for longitudinal. In rare cases, there are chains with cutting links that have orientation for longitudinal cuts.

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By purchasing the tool, it is necessary to clearly represent the areas of its use and, depending on this, determine the desired step of the chain.

Chain links: A - cutting or cutter, b - castle.

Conditional types of use chainsaws from private users:

• trimming branches in the garden, uncomplicated country work;
• individual construction, wood harvesting, episodic trees roll;
• frequent use (implying work on hiring), the workpiece of very large amounts of firewood, operation in its own workshop.

In the first version, a chainsaw is recommended having a chain with a small (0.325 ") step. This will allow you to get a lightweight and maneuverable tool, easy to pruning branches, including lifting potted stairs and branches of trees. This equipment allows you to carry out uncomplicated wood, and episodically allowed the roll of small trees.

The second option involves the choice of saws in 3/8 "and the thickness of the guide link is at least 1.5 mm. Similar saws allow you to easily carry out the entire complex of work on the maintenance of the site, a small workshop, harvest the stock of firewood for the winter.

The third option offers the use of 3/8 and 0.404 chains "in a pair with a powerful engine, since the list of work performed is intended only for a professional tool, while it is important to take into account the thickness of the guide link, it must be 1.6 or 2.0 mm. Steel for the manufacture of such chains is made taking into account possible overheating during wood dissolution without losing the hardness of the cutting edges of the links.

The interchangeability of the chains is allowed only on the manufacturer provided by the manufacturer. This is explained by the number of teeth of the drive asterisk, which is calculated only under a certain distance between the links. The chainsaw tire has a groove under a certain thickness of the guides, this should be considered when changing the chain.

Replacing the drive asterisk for a larger step is not recommended due to the occurrence of the inconsistency of the power and loads during the dissolution of the wood. The weak motor will not develop the required power to pull the cutting units on a tree, which will lead to a jamming or failure of the drive and clutch.

The most universal chain has step 3/8, this makes it possible to multilateral use combined with high cut speed and a fairly accurate cut line, satisfactory splashing of wood fibers.

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To choose a chain for chainsaws to know three parameters:

1. Chain step;
2. Chain thickness (driver thickness);
3. Chain length (number of drive links).

Knowing these three parameters can easily pick up, vyototzes or a harvester head.

1. Step chain

The chain step is made in inches, calculate it as follows: measure the distance between the nearest drive links of the chain, or the distance between the three nearest rivets of the chain (from the rivet center) is divided into 2 and translated in inches (1 inch \u003d 25.4 mm).

Chain's step should always be coincided with the step of the pilot sprocket and the slave.

• Chain in increments of 0.25 "On 1/4". The distance between three rivets (leading links) 12.7 mm ÷ 2 \u003d 6.35 mm is translated into inches (÷ 25.4) in inches 0.25 "(more often as 1/4").
• Chain in increments of 0,325 ". The distance between three rivets (leading links) 16.5 mm ÷ 2 \u003d 8.25 mm is translated into inches (÷ 25.4) in inches of 0.325. "
• Chain in increments of 0,375 "He 3/8". The distance between three rivets 19 mm ÷ 2 \u003d 9.5 mm is translated into inches (÷ 25.4) in inches of 0.375 "(it is customary to designate as 3/8" to not confuse from 0.325 ").
• Chain in increments of 0.404 ". The distance between the three rivets is 20.5 mm ÷ 2 \u003d 10.25 mm translate into inches (÷ 25.4) in inches of 0.404.
• Chain with a step 3/4 ". The distance between the three rivets 38.1 mm ÷ 2 \u003d 19.05 mm is translated into inches (÷ 25.4) in inches of 0.75 "(it is customary as 3/4").

2. Thickness

The chain thickness is the thickness of the drive level (you can measure the caliper). This size should always be coincided with the groove thickness.

In total, electric and gasoline saws, as well as harvesters there are 6 sizes of the determining thickness of the host:

• 1.1 mm (0.043 ");
• 1.3 mm (0.05 ");
• 1.5 mm (0.058 ");
• 1.6 mm (0.063 ");
• 2.0 mm (0.08 ");
• 3.1 mm (0.122 ").

3. Third main parameter when selecting a chain: Chain length (number of drive links).

The chain length is determined by counting the number of drive (internal) chain links. Important:

• cutting links do not determine the length of the chain (do not consider them).
• the length of the guide bus does not define the exact length of the chain (for example, a chain 55, or 56, or 57 links can be installed on a saw with a bus 16 "(40 cm), depends on the circuit tape mechanism for a specific saw model).
• you do not fit a chain about 55-57 links in length, only a certain size recommended by the manufacturer saws.

What is the length of the tire of my chainsaw?

The length of the cutting part of the tire differs from its total length. Tire length is considered to be the length of the cut (the operating part) is the distance from the front of the saw to the rounded tip of the tire. This size is rounded to the nearest in inches or centimeters. Inch is denoted as "equal to 2.54 cm.

For example, the length of the cutting part of the tire for chainsaws StiHL MS180 is 40 cm. 40 cm ÷ 2.54 \u003d 15.7 inches. Rounding is obtained 16 "(inches).

For chainsaw 6 MS180, 16 inch is suitable (40 centimeters) Tire Oregon Article 160sdea074.

How to pick up a tire for chainsaws?

In some situations, a certain confusion may have a chainsaw in understanding all the markings of chains marking for these tools. According to the result, it lead to unfortunate purchases. The choice of chainsaw is often determined by only a few basic criteria, one of which is the chain step. This indicator helps to allocate future instrument capabilities, including its speed of cutting, as well as norms must correspond to the engine power level. How are the chains label? Let's figure out!

Step and sizes

Step is an intermediate distance between three rivets, which are located nearby. To properly calculate the chain step, measurement distance between the tops of three rivets placed near each other. As a formula, it looks like this:

Where, L is the magnitude of the length of the step, which in the chainsaws characterizes the degree of remoteness of two teeth in relation to each other;

S is the value of the gap between two extreme rumble of three.

Step value can also be equal to the length of the distance between two adjacent shanks.

Pattern : the more the distance between the cutting teeth, the deeper they will enter the sawn material

By increasing the size of the chain step, it becomes possible to increase chainsaw productivity. However, in this case, the degree of accompanying effort changes to rotate the drive stars. And the higher the chain step, the greater should be the power of the engines and more physical forces spent for its broach when sawing materials.

Chainsaw chapter step. Table

Taking into account the magnitude of the step, at the moment the chain is divided not several subtypes:

As can be seen from the table, the chain step is indicated as a common number (3/4) and decimal - "0,375". Such separation is caused by the similarity of decimal values \u200b\u200b- "0,325" and "0,375", since the difference in one digit created a confusion when selected saws. Therefore, at one time, it was decided to establish two different designations: decimal and ordinary fractions.

The step is empty in the area of \u200b\u200bthe special depth of the depth of cut on each tooth.

The pluses of chains with a big step can be attributed to:

• high level Performance due to a wide propyl;
• the ability to perform complex works (roll of large trees).

But it should be noted that a wide propyl requires the use of a more powerful engine, which in turn significantly increases resistance.

The advantages of chains with a small step are:

• low vibration;
• smooth movements during propylene;
• clean the cut.

Benefits are achieved by large number Teeth and a small distance between them.

The entire known classification of chains is based on the characteristics of their marking depending on the step, which is intended for certain needs and is carried out under the specific capacity of electrical equipment. For a better understanding of each type of step, they should be considered separately.

The main parameters of the chains

Application Chain marking assumes the following parameters:

1. Step:

• "0,325" - The most common and minimum step size, which is used in semi-professional and domestic chainsaws with low capacities. The standard value of power under such a step ranges from "0,325" to "3l.s.", but not higher than "3,5l.s". When working with such a type of chain, the sawt is more smoothly, comfortable, without "impulses" of the processed products.
• "0,375" ("3/8") - applied to chainsaws with power in "4l.s". Such a chain is used in sawing the wood of medium and low thickness.

The accuracy and quality of the resulting propyl depends on the step value. In cases of the absence of the importance of achieving high quality when the chainsaw is sometimes of a particular importance to the accuracy of the cut. To do this, it is necessary to take into account the dependence of the step on the dissolution of the wood according to the marking marks.

1. Thickness of leading links (tails). When working chainsaws on its chain accounts most of All loads. Considering this, another one the main characteristic The saws of the saw is the thickness of the elements of the link, which is included in the tire grooves. This parameter also determines the total thickness of the fastening links, which is measured using a conventional caliper. The standard thicknesses include:

• "1.1 mm" ("0.043") and "1.3 mm" ("0.05") - Used in the production of entry-level chains, which are intended for the implementation of minor workshops. Often with such values \u200b\u200bof the thickness of the links, the length of the chain step can be "0,325", which implies no high loads and gentling mode of operation. Therefore, they are used in household and semi-professional devices;

• "1.5 mm" ("0,058") - The most common magnitude of the thickness in the chainsaw market and components to them. This value is able to ensure safe operation at a step in "3/8". The chain with a thickness of 1.5mm is not intended for cutting a professional level;
• "1.6 mm" (0.063) and "2.0 mm" (0.08) - Designed for the most difficult work. Metal in the manufacture of such chains is steel of special marks, and in the design, the characteristics of increased strength are laid.

The greater the thickness of the link and the wider tire's grooves, the high quality is chainsaw, because it is capable of withstanding heavy loads.

1. Depth of cut - is an a distinctive feature The chains produced and is characterized by the height of the cutting teeth profile. It is measured by the gap between the limiters and the cutting upper edge. On the market can be presented as high-profile (0.762 mm) and low-profile (0.635 mm) types of chain products.

The greater the height of the profile, the higher the entrance to the material (depth) and the speed of sawing

High-profile chains are installed on chainsaws with increased engine power. Information about the profile height is usually prescribed in the characterization to the tool.

The profile affects the occurrence of vibrations that are subsequently causing a drive or problem when holding the tool in the hands. In this case, the higher the cutting parts, the stronger the degree of vibration.

Household types of chainsaws are equipped with a low profile. In the semi-professional devices, different variants of chain types can be combined. However, in most cases, principle adhere to:

In the circuit with a big step set low profile, and in step "0,325" - high

Such variations increase the speed of the cut without due to the step, but by changing the depth or height of the profile. Although in professional instruments, the emphasis makes an increase in step, explaining that chainsaw becomes more manageable.

1. Geometry of cutting teeth - The profile can be two main types:

• chipper (in the people of "SERP") - It has a sickle form and is characterized by high performance. When operating it is easier and does not require compliance with clear angles of sharpening. Disadvantage: Risk of high loads and deterioration cutting characteristics;
• chisely (in the people "Semyon") - It has a working surface of a direct form in the form of the number "7". Applied in chains with a step "0,404" or "3/8" on professional saws. Chief flaw Chisellays - the complexity of sharpening cutting elements and sensitivity to the effects of dirt.

1. Number of cutting teeth - Determined as the ratio of the number of teeth to the number of guides in the bus. In the chainsaws of good production, two guides of the link in the cutting part of the instrument should be combined.
2. Type of sharpening links- directly depends on the type of future work. Classic views Chainsaws are used for most of its brief cutting trees and are rarely used for longitudinal cutting. Taking into account the resistance of the tree in both cases in the circuits there can be a different angle of placement of links. On construction counters, you can now find chains with the following types of cutting links:

• the longitudinal type of the chain - assumes the tree cut along its fibers. The cutting angle reaches 5-15 degrees.
• the transverse type - the cut is carried out across. The cutting angle in chains is 25-35 degrees.

1. Chain length - depends on the parameters and technical characteristics The chainsaws itself: power, dimensions, etc. With standard or normalized tension, its length is most often indicated in the passport.
2. The order of the links - The sequence of the location of the links can be different:

• standard - for each cutting link in the chain there are two leading links;
• with semi-empty - every third placement of the link in the chain is replaced with the so-called connecting;
• with the skipping - in the location of each second link for the cut, the connecting is installed.

Why do you need a skip in the chain? In the chains themselves, the quality of the cutting links is the most valuable, since they are manufactured by special technologies and have a greater cost in contrast to the connecting links. If it is impossible to shorten the chain, the only option to cheat the cost of the chain becomes a skipping of the cutting elements. In the work of the chain, the links of the links show reduced performance and quickly wear out.

In general, wishing to acquire a tool for cutting wood with maximum efficiency, do not be lazy to further examine the chain marking for chainsaws, also specified in the instructions for the tool.

There are several basic parameters for which chainsaw is chosen, one of them, the step of the saw headset. The step is depending on the power of chainsaws, and largely affects the speed of the cut.

That as far as the step corresponds to power, determines the performance and service life of chainsaws. Also from his proper selection Depends on the consumption of fuel.

Step is half the distance between adjacent shanks or between three adjacent rivets.

There are several sizes, 1/4 inches - the smallest, 3/4 inches - the largest and 3/8 and 0.325 - inch, most popular.

The step is the parameter that is available not only in the headset, but also in the stars of tires and chainsaws.

Important! All three elements, chain, asterisk and tire must have the same step parameter, otherwise the installation and proper work Impossible.

What is affected by the distance between the teeth

In the saw chain, the distance between cutting teeth directly affects its performance. The more, the deeper the cutting edge can crash into wood, provided the limiter sharpening.

Accordingly, more powerful chainsaws, it is permissible to install a headset with a large distance between adjacent links and vice versa.

If you put a pile headset ¼ inches on a powerful chainsaw, then the performance will fall significantly, and the load on the engine will grow, because The saw will work in the separation and exceed the maximum permissible turnover, which ultimately can lead to overheating and Zadiir CPG.

Conversely, the installation of a chain with a big step on a weak chainsaw will lead to the fact that the saw power will not be enough for normal cut, of course, this will not entail heavy consequences, as in the first case, but it is not comfortable to work as a tool.

Also, the quality and accuracy of the cut depends on the distance between the links. The farther from each other neighboring cutting teeth, the stronger the vibration when working and below the accuracy of the cut. For a more accurate cut, you should choose a saw headset with a smaller step. This factor must be taken into account those who are engaged in figure.

Big influence Chain's step is on the so-called "rebound". The larger the distance between the teeth, the probability that the chainsaw will bother up, above.

Important! Bowl of all, "rebound" occurs when working with tire tire, for example, when performing internal cuts. In this case, you need to be extremely attentive, regardless of whether the chain is used with what step.

In the selection of the chain, the rule applies that step (the distance between the teeth) is proportional to the power, but the accuracy of the cut is in the inverse addiction, i.e. The distance is more, the accuracy is lower.

3/8 or 0.325 what is better and why

It is better to determine which parameter is better and how worse it is impossible, since each of them has its own characteristics and is intended for chain saws of a certain power. Depending on how correctly the saw headset is chosen, the tool performance will have different indicators. If the headset is chosen optimally, i.e. The distance between the links corresponds to the recommended power, the performance of chainsaws will be maximum. With incorrect selection, the engine will experience overloads that can cause faults.

Optimal power indicators for 0.325 inches - 1.8-2 kW. It is for this reason that at the chainsaw of Huskvarna 142/137 there are chains with such a step.

For 3/8 parameter, a tool with a power up to 3 kW is required. In this case, the question arises, and why on the calm 180, with a capacity of 1.5 kW 3/8 inches chains are used. The answer is simple: a chainsaw Calm, the capacity is not the most important thing, great importance It has maximum amount revolutions. Country 180 issues more than 13,500 rpm, due to this it is capable of sawing a 3/8 inches headset.

For 0.404 inches, the optimal power of 4.5 - 5 kW.

Important! Specified power values \u200b\u200band chain steps are not necessarily character, the user itself has the right to choose the settings of the headset, which it plans to use on a chainsaw.

How to pick up

In the case when it is necessary to choose the optimal step of the chain for chainsaws, it is best to take into account the recommendations of the manufacturer and already based on them to choose the type of saw headset.

Important! When choosing, you should not forget that the distance between the links is not the only parameter to which you want to pay attention.

Also worth picking the thickness of the link, the type of cutting tooth, the number of units. Performance to a greater extent depends on the angle of sharpening, the depth of the cut and the shape of the tooth of the limiter. The sharper the restrictive tooth, the higher the speed of the cut, and below its quality.

Below we offer to watch a video about choosing a chain chain step. In the video, it is described in the video and shown how to determine it, for which chainsaw, what a chain step to use.

How to find out

There are several ways to find out the chain step:

1. View step value on the saw bus. Manufacturers of the saw headset, necessarily indicate the length of the tire, width of the groove and the pitch of the sprocket on the shank of the saw blade.
2. Measure the distance between the shanks of neighboring teeth or the centers of three adjacent rivets.
3. A method that is suitable for chains in branded packaging is to see the chain features on the box.

On the corporate packaging of the chains of the Channel, there is an exhaustive information about the products, reading with which it is possible to learn not only the distance between adjacent links, but also the type of teeth, the width of the link, the recommended storage size for sharpening.

Chain table chainsaw

In conclusion, we suggest familiarizing yourself with the table in which technical specifications Popular chain models for chainsaw of different power.

Conclusion

The distance between the chain chains of the chainsaw is one of the most important parameters that cannot be neglected. When buying a spare headset, you need to know which step is suitable for the tire and asterisks installed on your chainsaw, or change the chain, tire and the leading star with a set.