Miscellaneous

Everything about chains for electric saws: how to choose, correctly replace and sharpen

Everything about chains for electric saws: how to choose, correctly replace and sharpen


Among the useful things stored in the back room of the household owners of suburban areas, you can always find devices and devices for cutting wood. This can be a jigsaw, a hand saw, a handy electric saw, or a powerful unit that runs on liquid fuel. Any of the assistants requires certain skills of work and attentive care. For example, the owners of a tool powered by electricity need to know what chains for electric saws are, whether it is difficult to change them on their own and whether the file is suitable for proper sharpening.

Logging in large volumes or serious construction work on the street requires the purchase of a more powerful tool - a chainsaw. However, if you need to occasionally tweak a fence, make home renovations, or cut a few logs, then an electric saw is the perfect tool. It is convenient to use it in confined spaces - inside the house, in a shed or utility room, as well as on a site if there is a power source nearby.

What other advantages does a powered tool have? It does not take time to prepare the fuel mixture and cuts more precisely than gasoline counterparts. Minus one - a sparing mode of use. You will have to get used to cutting wood at intervals. This means that after 40 seconds of operation, the saw needs a break of about 20 seconds.

So, if you are already the proud owner of an ergonomic, comfortable electric saw, get ready to get to know the device better, replace and sharpen the chain - the main dynamic part.

Before choosing an electric saw, study the information on the overheating protection system. The service life of the protected motor is much longer and the working performance is higher

How to choose the right chain?

The chain, along with the engine, is the most important functional part, therefore, with active use, it often needs to be repaired, sharpened or completely replaced. It is better to replace the old, worn out chain completely, and for this you need to know some selection rules:

  • When replacing any spare part (sprocket, bar or chain), you need to remember the compatibility of the saw elements, that is, purchase only parts from the manufacturer: for example, a Makita electric saw requires a Makita chain.
  • Choose a chain depending on your goals. If you need more power, it is more profitable to purchase a product with a 3/8 "pitch, with low loads, 0.325" is enough. The volume of the cylinder does not matter in this case.
  • Pay attention to the angle of sharpening - this will come in handy for further maintenance, repair or restoration. For better performance, choose an angle of 30º - it can handle heavy loads more easily. However, with complex wood processing (if it is damp or frozen), it is better to stop at 10º.
  • The length of the chain must always correspond to the dimensions of the bar. In the process of work, it can stretch out, sag, but the issue is solved by simply removing 1-2 links.

Of course, the cutting method and material must be taken into account. For example, for longitudinal cuts, it is better to choose a chain with a small sharpening angle. The performance will be lower, but the service life will increase significantly.

One of the indicators of chain selection is the pitch, which is usually measured in inches. This is the spacing between rivets divided by two. Now there is a unified designation system and generally accepted standards - 3/8, 0.325 and 0.404 inches

Chain Teeth Parameters

The elements of the chain - the teeth - have differences that are important to consider when purchasing a chain for certain jobs.

Each part of the tooth has its own purpose. For example, the top edge of a tooth, often referred to as a scapula, tapers at the back to form the corner of the end blade. It is needed to cut the shavings

The sliding surface and the inclination of the end blade form a rake angle that can be varied from 60º to 85º. Correct the angle of the upper blade, as well as the rake angle, during the sharpening process. Each of the elements, in particular, its size and degree of sharpness, affect the cutting ability of the electric saw.

It is impossible to adjust the angles of inclination to arbitrary parameters, there are proven standards that must be followed depending on the type of chain and its functional purpose.

The blade angle provides optimal cutting properties when the chain enters the wood layer. On the inside there is a sharpening angle - 10º or 30º, which can be changed if necessary

The clearance angle is 50º or 60º. This is the most important angle, but it is difficult to measure and also difficult to adjust if the other values ​​are not respected.

The depth gauge distance affects how thick the chips are. It depends on the type and purpose of the chain and is 0.6-0.8 mm. The limiter also requires adjustment and is grinded, but much less often - after 5-8 sharpenings

Replacing the saw chain yourself

Companies that produce electric saws do not prohibit making a chain replacement with their own hands, on the contrary, they often complete new products with instructions for repairing and replacing individual parts. You should start by buying a new chain.

We check the chain for compliance, that is, we study its characteristics: length (depends on the tire), step size (relative to the sprockets), the thickness of the drive link

One of the common designs of budget saws is with side tension. To change the chain, we perform the following steps in turn:

  • push back the protective shield while lowering the brake;
  • turn the control tension screw with a screwdriver, unscrew the nut, thereby weakening the tension;
  • remove the cover;
  • we separate the tire with the chain from the sprocket;
  • remove the old chain from the tire, install a new one in its place;
  • we perform actions in the reverse order.

We tighten the chain smoothly, without jerking. We finally tighten it after closing the plastic cover with a screw and nut.

There are modern keyless chain tensioning systems, but many craftsmen prefer the traditional side tensioning, somewhat problematic, but proven and reliable.

Modern models of electric saws have so-called wing nuts for operating chain tension. Thanks to this element, the replacement process is faster - and this is important for large volumes of work. After lowering the brake, unscrew the nut and remove the cover. Slightly pushing the tire back, remove the old chain, put on a new one - first on the sprocket, then along the entire length. Then we put the sprocket in place, tighten the nut. We turn the tension wheel in the direction indicated on the body and finally tighten the lamb.

The last step is to check the chain tension. It should fit snugly against the tire when the brake is released, but rotate under manual influence. For a more effective check, it is recommended to run the saw at low speeds.

You can watch the video in more detail about chain tensioning:

Correct sharpening technology

It is naive to think that the saw will always work as efficiently as on the day of purchase. Wood, even malleable and soft, is a fairly tough material that gradually dulls cutting surfaces. After a certain period, which largely depends on the activity of using the tool and the quality of the wood, the chain will become dull, and it will need to be sharpened. If the teeth are not sharpened in time, they will lose their shape, become unusable and it will not be necessary to repair them, but to completely replace them - and this is economically unprofitable.

Don't miss the moment!

There is no fixed interval between repairs. Sharpening is usually required when signs of dullness begin to appear. One of the main signs is changes in the size and appearance of the chips. Due to the violation of the sharpness of the cutting edge of the teeth, it becomes shallow and darker than usual, and sometimes resembles dust.

Experienced craftsmen can determine the need for sharpening not by the characteristics of the sawdust, but by the operation of the electric saw. During the sawing process, unusual vibration appears, which in the future can cause destruction of the sprocket and wear of important components

If you suspect, carefully examine the chain itself. Sharp parts should be free of chips, radii, damage, and the shape of the cutting edge should remain original. If you notice the slightest irregularities in the configuration of the teeth, the chain needs sharpening.

In a blunt tooth, the cutting edge is ground in two directions: in the front of the blade and along the side cut line. During sharpening, it is necessary to correct the shape of the entire cutting part

What do the professionals advise?

Residents of large cities are faced with a choice: it is possible to sharpen an electric saw chain in a service center or sharpen it yourself using special tools. Owners of power tools from small towns and villages do not have such an opportunity, therefore, despite the complexity of the process, it is better for them to learn how to repair chains with their own hands. But self-sharpening has its own plus - saving money.

The cost of sharpening one tooth with adjusting the limiter will cost 100-120 rubles, however, most service centers place orders only with a minimum amount of 5,000 rubles or more (the calculation is based on the number of teeth of the entire chain)

The advantage of professional sharpening is the high quality of work. The chain is removed from the tire, pulled on a special machine, the sharpening angle is set and each tooth is adjusted in turn. Sharpening accuracy is determined by tenths of a millimeter.

Can a chain be sharpened with a file?

Many craftsmen do just that - at the first symptoms of dull links, they take a file and correct the angle of the cutting edge. However, any tool will not work, you should stock up on a special set that includes at least four necessary accessories:

  • flat file for correcting the depth gauge;
  • round file with reference lines;
  • caliber;
  • mandrel for determining the angle.

For sharpening, the chain is left on the bar, and the bar is fixed in a vice. The file must match the diameter of the teeth.

Tools for manual sharpening of an electric saw chain can be purchased at a construction supermarket, the average cost of one set is from 300 to 900 rubles

When using a round file, make sure that it protrudes only 1/5 of the part above the sharpened part. It is recommended to mark the first tooth so as not to accidentally wrap it in the second circle. Movements should be rhythmic and accurate, not randomly, but only in one direction.

After several sharpenings, the limiter should also be processed, which eventually loses its shape. The gauge is applied to the edge, with the end side to the stop. If the stop noticeably extends beyond the caliber, it should be trimmed with a flat file. Tool position - perpendicular to the tire.

While sharpening, observe the movement of the file, which should be at a 90º angle to the tire. Try to remember the amplitude and number of movements so that all the teeth of the chain are sharpened equally

The chain teeth do not wear evenly, so you will find them at different heights. In this case, you should find the most worn out element and navigate along it.

The quality of work cannot be determined by eye, it will be known only after a test cut.

Correct sharpening on the machine

It is impossible to constantly use a file to correct the cutting edge, since inaccuracy and uneven sewing leads to rapid wear of the chain. Even if your hand is full and the sharpening process seems quick and easy (and it takes from 6 to 8 hours), try using a machine - a more efficient device.

All chain sharpening machines are divided into manual and electric. A hand tool is an elementary design that looks like a frame or a jigsaw. For manual operation, it is necessary to firmly fix the bar with the chain (you do not need to remove it from the saw) in a vice, and then process each tooth in turn. Compactness, low weight and ease of transportation make it easy to carry the device over long distances, if the need arises.

Manual machines have a simple design and low cost - from 850 to 1700 rubles. The best manufacturers of manual sharpening equipment are Oregon and Champion.

When buying the second option - an electric model - you will definitely need a power source, which means that it is impossible to sharpen away from the outlet. But the quality of work will be an order of magnitude higher, in addition, power plants have a set of useful functions:

  • work with different types of chains;
  • correction of depth and cutting pitch;
  • precise shaping of the limiter;
  • setting the desired cutting angle.

Before work, you must carefully study the instructions and make a trial sharpening on 1 tooth. Then set the parameters for the first tooth so that all the following elements correspond to it. This guarantees the same sharpening of all teeth, hence good productivity and high performance.

Remember that chainsaw chains also need sharpening. You can do this yourself: https://diz-cafe.com/tech/kak-zatochit-cep-benzopily.html

How to extend the life of a chain?

And finally, a few tips for those who prefer to work more and spend less time repairing, replacing and sharpening chains. Remember that the saw is designed to work with wood, so never use it to cut other materials. Make sure that there are no foreign objects in the wood that could damage the chain teeth, such as nails, bolts or metal staples. Even a small steel stud can damage a few teeth, and the entire chain must be replaced as a result.

The ideal material for cutting is dry wooden logs, boards or bars, in width (diameter) not exceeding the length of the tire. Use an industrial-grade gasoline saw to cut a huge trunk into multiple girths.

To avoid accidentally damaging the saw, use special high stands or trestles and make sure that the bar and chain do not come into contact with the ground. The cut should be carried out freely, without snacks, if the teeth do not grip the wood or the tire moves with difficulty - it's time to sharpen. Be sure to observe the interval mode - let the electric saw rest. Lubricate the mechanism in time and make sure that there is no overheating.

You also need to store the power saw correctly: https://diz-cafe.com/tech/kak-xranit-instrumenty.html#i-13

Compliance with a few simple rules will increase the service life of the electric saw and will allow you to bring many interesting plans to life.

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There are three ways to solve the problem of sharpening the chain teeth: manually, by purchasing a special machine or by ordering a sharpener from a master.

You can sharpen your chainsaw chain yourself - it's cheap and you can do everything on the spot. The only difficult moment is to choose the right sharpening angle and make the same movements at the same time.

For manual sharpening, you need a cylindrical file of a suitable diameter. Also, you can not do without a file with flat edges. Another important detail is the special combination template created for a specific saw model. As an auxiliary tool, the vice will greatly facilitate the work, which will allow you to work with both hands.

The easiest way to sharpen a chain is to use a special chain saw sharpener. Such machines are already in great demand among professionals. The only thing that is required to work with the machine is the power supply and a specially designated room. For those whose work is associated with the constant use of an electric saw, it is rational to purchase this machine.

If you rarely use a saw, then there is no point in buying a machine for sharpening it, since it will cost about $ 400, and with these funds you can buy a supply of chains for at least 5 years. It should be borne in mind that any chain allows on average 5 bumps, after which it becomes unusable due to grinding of the teeth and in the end you still have to buy a new one.

Special sharpening machines are used in private workshops that provide services for sharpening chains for gasoline and electric saws, so if you have these workshops nearby, you can contact them, it's better than sharpening yourself or buying a machine. The main thing is that the cost of the service is at least 2 times lower than the new chain.

If you want you to have a high-quality sharpened chain, but you do not know where to do it, then contact a store specializing in the sale of power tools, they will tell you where such a workshop is located.


Chain Teeth Parameters

The elements of the chain - the teeth - have differences that are important to consider when purchasing a chain for certain jobs.

Each part of the tooth has its own purpose. For example, the top edge of a tooth, often referred to as a scapula, tapers at the back to form the corner of the end blade. It is needed to cut the shavings

The sliding surface and the inclination of the end blade form a rake angle that can be varied from 60º to 85º. Correct the angle of the upper blade, as well as the rake angle, during the sharpening process. Each of the elements, in particular, its size and degree of sharpness, affect the cutting ability of the electric saw.

It is impossible to adjust the angles of inclination to arbitrary parameters, there are proven standards that must be followed depending on the type of chain and its functional purpose.

The blade angle provides optimal cutting properties when the chain enters the wood layer. On the inside there is a sharpening angle - 10º or 30º, which can be changed if necessary

The clearance angle is 50º or 60º. This is the most important angle, but it is difficult to measure and also difficult to adjust if the other values ​​are not respected.

The depth gauge distance affects how thick the chips are. It depends on the type and purpose of the chain and is 0.6-0.8 mm. The limiter also requires adjustment and is grinded, but much less often - after 5-8 sharpenings


How to extend the life of a chain

And finally, a few tips for those who prefer to work more and spend less time repairing, replacing and sharpening chains. Remember that the saw is designed to work with wood, so never use it to cut other materials. Make sure that there are no foreign objects in the wood that could damage the chain teeth, such as nails, bolts or metal staples. Even a small steel stud can damage a few teeth, and the entire chain must be replaced as a result.

The ideal material for cutting is dry wooden logs, boards or bars, in width (diameter) not exceeding the length of the tire. Use an industrial-grade gasoline saw to cut a huge trunk into multiple girths. In order not to accidentally "screw up" the saw, use special high stands or "goats" and make sure that the bar and the chain do not come into contact with the ground. The cut should be carried out freely, without "snacks", if the teeth do not grip the wood or the tire moves with difficulty - it's time to sharpen. Be sure to observe the interval mode - let the electric saw rest. Lubricate the mechanism in time and make sure that there is no overheating. Compliance with a few simple rules will increase the service life of the electric saw and will allow you to bring many interesting plans to life.


Watch the video: #632 STIHL YELLOW chain vs GREEN Chain