Power saw chain, lubrication, sharpening

The bar and chain are components of an electric chainsaw whose main function is to cut wood. The condition and serviceability of the saw set of a garden tool largely determines its efficiency on the site: the ability to cut down dry trees or neatly cut logs. To keep a chainsaw in good working order the operator must keep the bar and chain in good condition, regularly apply new oil to lubricate them, and change the blade as it wears out.

How To Put A Chain On A Chainsaw Properly

To evenly sharpen the saw blade of an electric garden saw, its owner has 3 options. First method. manual. It consists of using two files, one round and one flat, and the holder needed to hold the round shaped tool. A circular file should be tailored to the pitch of the chain. the larger the pitch, the larger the diameter of the file to be used. A flat file is needed to handle the limiter, so it can be any size.

The procedure for sharpening the chain with files is as follows:

  • First, a holder with a circular file pre-fixed in it has to be mounted on the cutting chain of the electric saw. There are arrows on the bar, which should be parallel to the guide bar;
  • Next the sharpening angle should be checked. After making sure that the top blade of the chain cutting tooth is positioned at an angle of 25-30°⁰, you can start sharpening;
  • The operator’s movements should be steady and forward only. Each of the cutters in the chain must be ground an equal number of times.

The second method of sharpening electric saw cutters is to use a file set and a special template. The necessary parameters, such as the inclination and cutting angles of the teeth, are already marked on the sharpening template. Sharpening the chain of your electric chainsaw with the sharpening template also allows you to evenly sharpen the cutter tooth.

During restoration of cutting teeth the template is applied to each of them in turn. It is equipped with moving rollers on which the file slides while working on the chain. The sharpening angle is not disturbed, so that each tooth is restored evenly.

The only disadvantage of this method is the need to use a separate template for each specific type of cutting organ, taking into account the pitch of the chain. The width of its shank, drive link, and other parameters.

The third method of sharpening. the use of an electric machine. This option is considered the easiest, fastest and most convenient. Most machines come complete with metric and graduated scales that allow you to resharpen almost any chain, regardless of its pitch and number of links.

The use of an electric machine is suitable for people engaged in regular felling and log sawing. In other cases it is not practical to purchase specialised equipment.

The chain in a chainsaw

Parts are the teeth and connecting elements. Teeth are located along the entire chain and alternate right and left hand turns. The tangs are made of special steel material and the teeth are hard chrome plated for longer life.

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STIHL has excelled in producing quality products more than any other company. STIHL chains are manufactured in Switzerland, and are individually tested and subjected to induction hardening to increase the wear resistance of the entire support surface.

attach, chain, your, electric

So, the chain consists of these elements:

  • drive links (1);
  • connecting links (2);
  • left-hand cutting edge angle (3);
  • right cutting teeth (4);
  • knurled drive links (5) for low kickback tendency.

The cutting tooth itself also consists of separate areas:

The feature of the tooth is that it is not sharpened on one side, but on several at once and in doing so are formed:

  • angle of the upper blade into the wood (1)
  • rear angle of the end blade (2);
  • front angle of the end blade (3); different chains have 60-85 degrees;
  • Back angle of top blade (4); the value varies between 50 and 60 degrees;
  • sharpening angle (5); 25-35 degrees is optimal, the higher the angle. the softer the wood to be sawn;
  • depth gauge distance (6);
  • tooth pattern (8).

Choosing a tire for your chainsaw (electric saw)

One of the bar’s parameters is its size. Usually the tire size is given in inches, sometimes in centimeters. We recommend using the size in inches. The most commonly used tire sizes are 11″, 12″, 13″, 14″, 15″, 16″, 18″, 20″, 21″, 22″.

Smaller tire sizes are used for easier jobs. For example, a chainsaw with a 11-13″ bar installed is used as a lopper and is also used for cutting small, non-thick boards. This tire is small and allows you to accelerate the chain at high speed, which allows you to work quickly. The most common and universal tire size is 14-16 inches. These tires allow you to cut firewood and use your chain saw as a lopper. 18-22″ tires are used for cutting thick trees when making firewood. These bars are used in semi-professional, professional and powerful saws.

Your saw’s instruction manual should tell you the size of the guide bar you can use. Set the bar longer than the manufacturer specifies is not recommended, because it affects the engine speed. The longer the bar, the more force the engine uses to rotate the crankshaft to accelerate the chain, which affects engine wear. This is the most important rule to follow.

Amateur saws use narrow and flat (low profile) tires. These tires do not kick back and are very safe, which will be appreciated by beginners. There are also lightweight bars for chain saws. These tires have reduced weight, which allows you to work and operate the chainsaw in the lean-to, as well as on the roof of the house. A light-weight guide bar is two steel plates that are bound inside with polyamide.

There is another group of chainsaws. the ones with replaceable heads. This is essential for chain saws in heavy cutting applications where the rate of wear on the chain increases. This bar shape is not necessary for domestic use.

One of the important parameters of a saw bar, is its shank (attachment). Each manufacturer has a different tire mount. That’s why sometimes a bar from one saw may not fit another.

Since the bar is directly connected to the chain that is attached to it, you need to consider the chain pitch. See below for more information.

What kind of chain is on the STIHL 180??

Tank 0.25 l oil tank 0.15 л
Chain pitch 3/8″ Number of chain links 50 pcs.
Household class Homeland of the brand Germany
Chain thickness 1.3 mm RPM (rpm) 14000
Manufacturer’s item codes 11302000108 Length of the bar (mm) 350
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To tighten the chain, you have to:

  • Loosen the securing nut of the saw bar and the chain.
  • Use the adjusting screw to adjust the chain tension.
  • Attach the guide bar in the optimal position with the fastening nut.

How to install it correctly

The mounting process of the purchased accessory depends on the type of tensioning of the accessory or on the type of the saw. For side-tensioned power tools, for example, we recommend that you follow this sequence:

  • Release the brake by pulling the guard strip in front of you.
  • Release the tension by turning the screw with a screwdriver and then clamp the nut.
  • Lift the cover that covers the chain.
  • Remove the chain from the sprocket guide, allowing the chain to be dismantled.
  • Mounting the new chain starts at the front of the bar. To do this, it is necessary to put the tire on top of the sprocket.
  • Insert the bar in its original position.
  • Tension the chain with the tensioning screw, ensuring slight tension.
  • Put the protective cover back on, then tighten the nut.

If the tool has a quick tension, the procedure for installing a new cutting element is as follows:

  • The saw is removed from the brake.
  • Secure the nut on the handle. The nut can also be used to secure the shield, as well as to clamp the guide bar.
  • Remove the housing by turning the tire counterclockwise. This will give you the opportunity to permanently remove the old.
  • Fill up the chain. Start with the sprocket. In this case the cutting edge should be directed to the body.
  • Tension the product by adjusting the guide.
  • Replace the sprocket cover by screwing the sprocket into place.

Following these recommendations, you can quickly install a new chain in place of the old one.

How to sharpen the chain yourself?

It’s hard to believe, but almost half of all breakdowns are caused by a blunt chain. It causes increased stress on the motor, overheating and premature wear and tear. A dumb sawing belt breaks gears, drive sprocket, bearings, etc.д. The first sign of bluntness is dark, fine filings. The teeth can not remove the desired layer, so the shavings are crushed. If you examine such a saw, you can see defects on the edge and even pieces torn off. Craftsmen advise to sharpen the saw as often as possible. If you procrastinate with this process, you will need to give the device to a workshop. Saw sharpening at home is possible on a special machine or manually. If you do the sharpening regularly, you can handle it by yourself, following the rules:

  • Sharpening should not be done directly on the ground, as dirt can clog grooves with oil.
  • Use a sharpening tool: files (round and oval) mandrel and Caliber.
  • Sharpening angle should be over 30 degrees.
  • The file should protrude slightly over the tooth.
  • Sharpen the teeth one by one, twisting the band.
  • After sharpening the teeth, use a gauge to straighten the cuts (the protrusions that are responsible for deepening during sawing).
  • If the cuts protrude a little beyond the teeth trimmer line, they can simply be filed down.

As you can see, troubleshooting is easy, but there are also difficult. Remember that with proper use and care, you will need repairs less often.

How to sharpen an electric saw chain with your own hands?

Like any tool, electric chainsaws can lose their life over time because working with wood dulls even the sharpest and most reliable materials. Depending on the degree of intensity, the time when you need to sharpen the chain of your electric saw with your hands may be different. If you do not sharpen the individual chain teeth in time, they will not only lose their original shape and become unusable, but will require a complete chain replacement. As soon as you see signs of blunting you need to take appropriate action. sharpen the chain of your electric saw.

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Note that electric saw chain sharpening should be done with extreme care. if you think a file and a couple of movements are enough to fix the cutting edge, they are not. You will need a set of at least four tools:

  • Caliber.
  • Use a flat file to change the depth stop.
  • Circular file with reference lines.
  • Angle grinder.

If you are in doubt, how to sharpen the chain on an electric saw, leave it to professionals, but most users have no difficulty with this issue, because you need to leave the chain on the bar, with the bar itself secured in a vise, for a reliable fixation and easy access to the links. Note that the diameter of the file must match the teeth.

Equipment for sharpening chains

There are more effective ways of how to sharpen the chain of an electric saw, using manual and electric machines for this purpose. Power saws require access to a power source, but have a host of advantages, including:

  • The ability to work with a variety of chains on power saws.
  • Cutting depth and pitch can be adjusted.
  • Creating a limiter as accurate as possible.
  • You can set the desired cutting angle.

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The chain does not turn on the electric saw. causes and repair methods

This failure is usually caused by a manufacturing defect or by the plastic sprocket that the guide bar for the electric chain saw attaches to becoming worn. During operation the drive sprocket is the first to take the load that is transmitted by the saw’s powerpack. Over time, the teeth will slip. After that the motor and other important mechanisms of an electric garden tool start to overheat.

At the first sign of trouble you need to replace the sprocket right away. To do this, you need to disassemble the tool and carefully remove the worn part. Then it is necessary to clean the place under it of the old fluid and install a new sprocket. In the end, the part will need to be generously lubricated with thick oil.

In some cases, it is not the built-in sprocket that fails, but the elements next to it. Highly stressed elements include the clutch cup, spring, bearing, and cam. As a rule, these parts cannot be repaired, so the operator will need to replace the defective parts without waiting for the failure of other elements of the electric saw.

In order to prevent excessive wear of drive components in the future, you must constantly monitor their condition and the amount of grease. A user of a garden saw should check the gear and gears at least once a month, and if necessary, clean them and change the lubrication.

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