How to sharpen a saw chain angle. Opal calibers

How to choose the right angle of sharpening of the chain of the chainship for longitudinal and transverse saws in dependence on the material

The need to sharpen the chain of the chainsaw is a prerequisite that is relevant for chainsaws with daily use, for example, on logging, and during periodic use in garden plots and households. Like any process associated with the technique, the sharpening of the chain has a number of nuances, for example, the angle of sharpening, it must be taken into account and selected a certain value for a specific work.

The angle of sharpening the chain is an important characteristic, the performance of the chainsaw mainly depends on the value of which. It also affects the following parameters:

  • The intensity of pressing increases, as the ability of the chain to “enter” the tree without pressing is reduced. This leads to an increase in tension in the human body.
  • Fuel consumption increases.
  • The load on the links of the saw chain increases.
  • Significantly reduced the service life of the chainsaw due to additional efforts to the gearbox and motor.

If you sharpen it on time, then you can significantly increase the service life of the chain. This is due to the fact that with timely sharpening from the tooth, a smaller amount of metal is “removed”.

Oregon 520-120 and 410-120 Electric Chain Grinder Instructions

There are two important rules that relate to the sharpening of chain saws:

  • The higher the performance, the greater the angle.
  • A decrease in the angle of sharpening during the cut of solid wood can be significantly reduced by vibration.

The smallest angle is 25 °, and the largest is 35 °. But in circuits for the longitudinal sawing, the angle is 10 °.

Signs of a lost chain and the consequences of further operation

The difficulty of the functioning chainsaw with the difficulty of the saw of solid wood or a strongly overdry logs should not be confused. In all these cases, the speed of the operation is reduced, but the dumb tool has a certain nature of behavior. Signs by which we can judge the need for sharpening:

  • The chainsaw does not immediately bite into the trunk of the tree, as if polished, shifting from the place of contact;
  • During the cut of soft rocks, the tool is sluggishly enters the thickness of the wood, it is necessary to put pressure on the tire;
  • The chips made of large with characteristic oblong particles are turned into a small tyirs, which is very rarely crumbling;
  • The chain heats up quickly, an unpleasant smell of burning oil for lubrication of the guide tire is heard.

In addition to these alarm signals, always after a chain hitting metal nails, wire or burrow a chainsaw in the ground, you can be one hundred percent confident in the need for subsequent sharpening of the cutting edges.

What can happen to the instrument in the future, if you ignore the problem? The most harmless is that it will be impossible to work with a chainsaw, in the end it will get bored and will still force the unit to serve. But adherents saying “there is no mind of mind” can come to the next result:

  • An extra load on the body, because, frankly, it is necessary to put pressure on the instrument so that it saws;
  • Fuel overspending up to 30%, which is explained by the need to pass a larger turnover cycle to achieve the same result;
  • Accelerated wear of the tire and other parts of the chainsaw.

In addition to all these negative consequences of the saw of the saw, the probability of jamming the chain in the trunk and the injury to the operator performing the work is high.

In this video, you can familiarize yourself with the trim process, the most popular ways and tools used for this.

A person who has a chainsaw in his household should know how to sharpen a chain of chainships with your own hands. There are several ways:

  • Sharpen with the use of a file (the most common method of sharpening, t.To. Allows you to tighten the tool directly at the place of work on sawing.)
  • Silence using a special machine (this method is used in service centers, but can also be used in the personal economy)
  • Imprison with the use of corner grinders. To sharpen this method, it requires certain skills. A little.Won method, t.To. It is difficult to sharpen with the help of an angular grinder correctly.
sharpen, chain, angle, calibers

1 method. File

The first thing you need in order to sharpen the chain, or correct it a little, these are special files.


For sharpening and editing chains for saws, two types of files are used. The first, this is a gun file with a diameter of the corresponding diameter of the rounding of the working edge of the saw tooth.

For sharpening saw chains of a household tool, round files with a diameter of 4, 4.8 mm are used, this is due to the fact that they have a small tooth. For professional models, more powerful chains with a large tooth are used, and accordingly, files with a diameter of 5.2, 5.5 mm are needed.

In order to properly sharpen, it is not enough to sharpen only the cutting edges of the tooth, you still need to adjust the restriction of the cut depth of the cut. If this is not done, the chain will not crash into the sawing material to the required depth, which will noticeably reduce the speed of work and in the same way as in the situation with a dumb chain can lead to a saw engine overheating due to a not enough load on the engine. This work is done using a flat file.

It is worth remembering that the use of a blunt chain can lead to overheating of the engine and the formation of bully on the cylinder.

Process description

The first where the editing of the saw chain begins on the saw is the installation of the tool on an even platform or table. In forest conditions, for this, a large.Diameter chock is well suited. Next, you need to examine the saw chain for any defects, it can be cracks, completely fragmented teeth. After inspection, you need to install the brake in working condition, thereby blocking its movement along the bus.

The chain during sharpening with a file should be stretched.

It is advisable to lay a stand under the tire, you can use logs as it, a piece of a branch of suitable diameter, or the manufacturers of sharpening tools have special clamps to hold the tire during the sharpening of the circuit.

Stihl clamp

The circuit is sharpening is carried out by the movements of the file from the inside of the tooth outside. In this case, the file should be located parallel to a special mark on the chain. This label is applied by the manufacturer of circuits to specify the standard angle of sharpening.

The hidden tooth should be located approximately in the middle of the tire, this is necessary for the convenience of work, during the sharpening process you need to advance the chain along the tire, without forgetting to install the brake in the working position each time.

Work on sharpening the chain on a chainsaw must be carried out using gloves made of rough material, otherwise it is quite easy to injure yourself, t.To. The working surface of the teeth is very acute.

sharpen, chain, angle, calibers

Ideally, manufacturers advise to conduct the same number of movements with a file for each tooth, but in practice this is not always possible, t.To. Teeth have a different degree of damage to the working edge.

To facilitate the sharpening of a saw chain using a file, special holders can be used, with the markings of the angles applied to them. Markings are made not only for standard transverse cut, but also for longitudinal.

The holders are also convenient to use if you do not have sufficient sharpening experience. Experienced masters for sharpening do not use holders, but can only use special devices that support the file.

Another device designed for sharpening is a manual machine for editing saw chains. As a sharpening tool, it uses a regular file that can independently replace. The machine is mounted directly onto the tire, it also has the ability to adjust the angle of tooth sharpening and a special emphasis that holds the pulled tooth.

Hand machine for sharpening, perfect for beginners. Along with electric models for sharpening, manual has its own undeniable plus in the form of a low price. Depending on the manufacturer of a manual machine, their appearance may vary, but everyone has one principle.

The cut depth adjustment is carried out using a flat file, so that there is a difference between the upper cutting edge of the tooth and a height limiter.

As can be seen from the figure, the depth limiter is flowed in such a way as to bring the clearance indicator to the factory value. Below is a table, which contains the main values ​​of the angles, as well as the clearance for the most common types of circuits.

As a rule, the size of the gap is adjusted using a special dick. It is installed on the circuit during sharpening, after which the depth limiter grows.

Why is the instrument blunt

Each chainsaw has a certain period of resistance. This is the name of the time from the start of work by a new tool, to bringing it into an ineffective state.

The destruction or wear of the cutting tool intended for wood work is due to the effect of a set of forces that arise in the cutting process. One of the key is the friction force. Deviation of the saw chain occurs due to prolonged work, due to the use of the chainsaws not for its intended purpose

The size of wear can be defined as an indicator of weight measured in milligrams. Wear is a parameter that shows a change in the characteristics of the shape and size of the cutting blade. A change in the geometric parameters that occur during the cutting, and there is no linear wear, is called a blunt.

There are parameters on the basis of which they make a decision on the possibility of further operation of the tool. In particular, when examining the teeth of the saw chain, it is necessary to pay attention to the edges of the front and rear surface, the height of the blade, to the area of ​​wear. If they are in unsatisfactory condition, it means it is time to sharpen a chainsaw.

The signs that the saw was lost as the following can be attributed:

Sharpening the chain of the chainsaw with a file

Professionals recall that all the teeth of the chain for chainsaws have a specific structure. It is worthwhile to figure out which part of the tooth is subject to sharpening and which side should not be touched. After sharpening the teeth should have the form, as close as possible to the factory.

Otherwise, the tool will not work properly. Wipe each tooth is necessary the same amount of time to observe symmetry.

For circuits with a diameter of 1.3, it is recommended to use a file with a diameter of 4 mm. Clocks with a diameter of 1.6 are pulled by a file of 5.2 mm. A flat file will be required to focus the limiter. Before starting work, you need to put on gloves to protect your hands from sharp teeth of a chainsaw. During sharpening, the chain must be stretched.

  • Click. A fixed tool will not interfere with sharpening.
  • Chalk should be noted the tooth from which sharpening begins. Otherwise, it will be possible to walk in a circle, spending extra time on the procedure.
  • Install a clip with a file at an angle of 30 degrees to the circuit.
  • With light movements to sharpen the tooth of the chain of the chainsaw is necessary from yourself. There are enough 7 runs for the new file to give sharpness to the teeth of the chain.
  • Having imprisoned all the teeth on the right side, the chainsaw must be expanded and the left teeth should be sharpened.

“Pros” sharpening a saw with a file: you can sharpen in the field without much difficulty and tools. Among the “minuses” of this method of sharpening: the process is time.Consuming and takes a lot of time.

sharpen, chain, angle, calibers

A good file for sharpening is required. Cheap tool options will quickly fail after the first run along the chain. If the chain is too blunt, the file will not work out the file. It is necessary to consider alternative sharpening options.

Mechanized sharpening by car

Special tools that can be used to simplify the procedure are quite widespread. Such machines are equipped with a special electric drive and grinding circles with increased wear resistance.

For use at home, a small tool is suitable. Such devices can eat from the 220 V network, and at the same time, the electrical consumption indicator is 100 W. The installation of the chain is quite simple, the sharpening procedure can be carried out even without special preparation.

When choosing a machine, attention is paid to the points below:

  • Adjusting the angle of sharpening in a certain required range.
  • The ability to process the chain with a different step and thickness of the cutting edge.
  • Features of the procedure for changing grinding disks.
  • Control of the value of the cut width.
  • The power of the installed electric engine and the energy consumption indicator.

In addition, it is recommended to devote the popularity of the brand, since the service life depends on this and many other points.

Note that the mistakes made at the time of sharpening can cause increased wear of the chain. That is why, with frequent use of the tool and the absence of a required carriage machine, it is recommended to entrust the work to professionals who provide appropriate services.

Homemades for sharpening the chain

Before starting work, the gas tools need to tackle the cutting elements. Before proceeding with the sharpening of the chainsaws with your own hands, you need to determine the design of the cutting edges. The cutting edges of the chains have a side and beveled shape (cheese or chipper). The angle of the file of the file during sharpening depends on this.

The easiest way to sharpen teeth on an electric or chainsaw is the use of files that are equipped with tools. Such files can also be bought in a specialized store for the sale of benzo.Tool. If it is necessary to drag several circuits daily, then it is advisable to use a corner grinder or a special machine.

It is interesting! When working with a corner grinder for sharpening, it is important to use the voltage regulator, with which you can reduce the number of speeds.

Description of the sharpening process

Consider in more detail how to sharpen a chain of chainsaw. The first thing to do is to prepare a place for installing a clamp, or if the process goes without it, it is convenient to use a regular log as an stop for fixing the tire in a horizontal plane. The chainsaws are installed on a flat surface, the log is placed under the tire, the brake is turned on.

How to Sharpen Chainsaw Chain. Ozito Tool Tips [PXCCSSS-018]

To avoid injuries when sharpening a chainsaw, be sure to turn on the brake of the saw chain.

The next stage is direct sharpening of the tooth. To do this, with a round file, movements are made from the inside of the tooth to the external.

It is very important at this moment to maintain the right angle of sharpening. The standard angle is thirty degrees from the perpendicular location of the file to the tire plane. How to arrange it correctly shown in the photo below.

In the process of sharpening a chainsaw for non.Standard cut, for example, longitudinal. The sharpened angle changes to a less acute. As a rule, it is no more than 10 °. It is in such cases that a holder, manual machines or sawing calibers are used to control the angle of sharpening.

Some manufacturers of chain chains, to facilitate sharpening, as well as to indicate the maximum possible sharpening, make a special label on the upper surface of the tooth.

Holding the file parallel to the mark, you can be sure that the correct angle is observed.

The number of working movements with a file should be the same for each tooth. This will allow all the teeth evenly grinding.

In the process of editing the chain, it is customary to sharpen the teeth on one side first, and then on the other, it is convenient. To. There is no need to constantly change your location in relation to the chainsaw.

After the working teeth are sharpened, it is necessary to adjust the height of the restrictive tooth a flat file. To do this, the supporting caliber is laid on the chain so that the restrictive tooth coincides with its slot, after which the protruding part is grown by a file. This procedure is performed for all restrictive teeth.

The use of roller devices

Sharpet device, with which you can quickly and efficiently correct the teeth consists of a small guide template, on which two videos are installed.

By installing the adaptation on the tire, you can sharpen the teeth of the chainsaw, without even the experience of conducting such operations.

Sharpening of corner grinders

This method is less common. This is due to the fact that safety requirements are increased here. But some users of saws use it. To sharpen the circuit with a corner grinding, the saw tire must be squeezed in a vice so that with the saw brake turned off, the chain can move freely. The following actions are performed:

sharpen, chain, angle, calibers
  • A control tooth is selected (first sharpened).
  • The saw brake in the working position is placed.
  • The angular grinder is turned on, sharpening begins. It is important that the circle on the corner grinder is sharpened, and not detachment.

The disadvantage of such sharpening is that it is very difficult to withstand the necessary angle angle. It is no less important that there is a risk of damage to the angular grinder of the ears of the link mount, the consequence of this may be the rupture of the chain during the process of sawing.

Despite the fact that the sharpening of a corner grinder is quite feasible, you should not abuse it. It is better to use the manufacturer’s recommendations and use only certified devices for sharpening the circuit. This will save time and money. The sharpening of the chain is not such a difficult process as it might seem at first glance. Even if for the first time you can do this not quite high quality, you should not be upset: be sure that over time you will gain the necessary skills.

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