How to measure chainsaw bar length

A chainsaw is one of the most necessary and available to almost any radical owner of a tool: no dacha owner or owner of a private home can do without it. Cutting firewood, pruning trees and shrubs, building or repairing pergolas, benches, porches, etc.д a chainsaw is always the first assistant in such household chores. Professional craftsmen on serious construction sites and logging sites can’t do without it either.

Working elements of a chainsaw which are intended for direct cutting are called a saw headset: a chain and a guide bar.

One of the things that influences the choice of this or that model is the type of bar and its length. Chainsaw tires are classified as follows:

  • narrow flat. works together with a low-profile chain of a non-professional home chain saw, minimizes the risk of injury due to the absence of a “kickback” effect, which is especially important for chain saw beginners;
  • light bar. made of two steel plates joined by a polyamide layer. This design substantially reduces the overall weight of the chainsaw itself, which can be a serious advantage when carrying out certain types of work;
  • A bar with a replaceable head. fitted on medium- and high-powered professional chainsaws used for large amounts of long-duration work.

The type of bar is a serious characteristic, but not the only one to consider when buying a chainsaw.

How to Determine Chainsaw Tire Size

In some situations, chainsaw owners may experience some confusion about understanding all the markings for chain markings for these tools. This results in unsuccessful purchases. Chainsaw selection is often determined by just a few basic criteria, one of which is chain pitch. This indicator helps to highlight the tool’s future capabilities, including its cutting speed, and must meet engine power standards. How chains are labeled? Let’s see!

Pitch and its dimensions

Step. Is the distance between the three rivets that are next to each other. To correctly calculate the chain pitch, measure the distance between the axes of the three rivets close together. In a formula, this looks something like this:

Where L. Pitch length, which in chainsaws describes the degree of distance between two teeth relative to each other;

S. is the gap between the two outermost rivets of the three.

The pitch size can also be equal to the length of the distance between two adjacent shanks.

Template: the greater the distance between the cutting teeth, the deeper they will go to the cutting material

By increasing the chain pitch it becomes possible to increase the performance of the chainsaw. However, in this case, the degree of force applied to turn the sprocket varies. And the higher the chain pitch, the greater the motor power and the greater the physical force expended in pulling it when cutting materials.

Chainsaw pitch. Table

Given the pitch size, chains are not currently broken down into several subtypes:

measure, length, tire, chainsaw

As you can see from the table, the chain pitch is denoted as a regular number (3/4), and the decimal. “0.375”. This distinction is caused by the similarity of the decimal values “0.325” and “0.375,” because the difference in one digit created confusion when choosing a saw. That is why it was decided at one time to set two different designations: decimal and fractional.

measure, length, tire, chainsaw

The pitch is peorized in the area of the special depth gauge cutter on each tooth.

The advantages of large step circuits include:

But it should be noted that wider sections require a larger motor, which in turn greatly increases resistance.

Advantages of small tone chains:

The advantages come from the large number of teeth and the small spacing between them.

All known classifications of chains are based on the particularity of their marking according to the pitch, which is adapted to the particular needs and made for the particular power of the electrical equipment. For a better understanding of each type of step, they should be considered separately.

Basic circuit parameters

Circuit marking requires the following parameters:

  • “0325”. the most common and minimum pitch size used in semi-professional and domestic low-power chain saws. The standard power value for this pitch is between 0.325 and 3 hp.с., but no thicker than 3.5L.с. When working with this type of chain, the cut is smoother, more comfortable, without “tearing” the workpiece.
  • 0,375 (3/8). Used on “4L” chain saws.с”. This chain is used for sawing medium to small thicknesses of wood.

The accuracy and quality of the cut you achieve depend on the pitch. When it is not important to achieve high quality with a chainsaw, cutting accuracy is sometimes particularly important. To do this, you must consider the dependence of the pitch on the dissolution of the wood according to the marking previously applied.

How to Determine Chainsaw Tire Size

  • Thickness of drive links (tails). When chainsaw is working, it has the greatest load. With this in mind, another key feature of the saw is the thickness of the connecting pieces that go into the grooves of the bar. This parameter also determines the total thickness of the mounting links, which is measured with a standard caliper. Standard thickness values include:
  • 1.1 mm (0.043) and 1.3 mm (0.05). Used in the manufacture of entry-level circuits designed for small amounts of work. Often at these link thicknesses, the chain pitch can be “0.325”, which implies low loads and gentle operation. Therefore, they are used in domestic and semi-professional devices;
  • 1.5 mm (0.058). the most common thickness on the market for chainsaws and accessories. This value is capable of safe operation with a step value of “3/8”. The 1.5 mm chain is not designed for professional level cutting;
  • 1.6 mm (0,063) and 2.0 mm (0,08). Designed for the most demanding jobs. Metal in the manufacture of these chains. This is a special grade of steel, and the high strength characteristics are built into the design.

The greater the thickness of the link and the wider the groove of the bar, the better it is considered a chainsaw, as it is able to withstand heavy loads.

  • cutting depth. is a distinctive feature of manufactured chains and is characterized by the profile height of the cutting teeth. it is measured by the clearance between the stops and the cutting edge. Both high-profile (0.762 mm) and low-profile (0.635 mm) chainsaw products are sold.

The higher the profile height, the higher the material feed (depth) and the cutting speed

High-profile chains are installed on chainsaws with higher engine power. The profile height is usually recorded in the tool data sheet.

The profile influences the occurrence of vibrations which subsequently cause wear on the drive or problems with holding the tool in hand. In addition, the higher the cutting parts, the higher the degree of vibration.

Household chainsaw types are low-profile. Semi-professional devices can combine circuits of different types. However, in most cases the principle is as follows:

The high step chain is set to a low profile, and on the “0.325” step. high

Such changes increase the cutting speed not by a step, but by changing the depth or height of the profile. Although professional tools focus on increasing the pitch, explaining that the chainsaw becomes more manageable.

Chainsaw tire.

Three parameters are used to characterize the size of the tire: its length, slot width and pitch of the chain for which it is designed. In the vast majority of cases, manufacturers specify the length in inches. The most common in Russia are seven sizes of tires from 10 to 22 inches. It is not uncommon to find the same saw model on sale, but with different bar lengths. This is fine as long as it corresponds to the tire manufacturer’s stated dimensions. This is indicated in the saw’s data sheet. Some sellers indicate the dimensions not in inches, but in centimeters, believing that it is more understandable. Here’s a table of correspondence between inches and centimeters.

Often the length is given in the number of drive links of the chain for that bar, for example 72 or 76 links.

Groove width is also given in inches. The five most common sizes are. Here are some numerical values for widths in inches: 0.043, 0.050, 0.058. As you can see, it’s hard to remember this information correctly. That’s why in Russia it’s not uncommon to show the groove width in millimeters for convenience. Here’s the collision in dimensions: indicate the length of the bar in inches or centimeters, or in number of links, and the width of the groove in millimeters. But in spite of this, any somewhat competent salesman will understand you. Below is a table of groove widths in inches and millimeters

The pitch of a chain in a tire parameter set is the size of the sprocket. It’s important that this information is the same for the chain and tire. If they don’t, both parts will be out of alignment. The most common sizes are 0.325 and 3/8. Let’s talk about chain pitch below.

How to Measure a Chainsaw Tire Correctly

To choose a chainsaw bar you need to know the type of tail, the bar length, the groove width and the sprocket pitch.

How long is the bar for my chainsaw?? How to measure a tire?

The length of the bar is different from the overall length of the bar. The length of the bar is considered the length of the cut (the working part). is the distance from the front of the saw to the rounded tip of the bar nose. This size is rounded to the nearest inch or centimeter. The centimeter is marked “2.54 cm.

For example, my STIHL MS180 chain saw has a cutting length of 40 cm. 40 cm ÷ 2.54 = 15.7 in. Rounding 16″ (inch).

The Calm MS180 chainsaw fits an Oregon 160SDEA074 16-inch (40 cm) bar

What is the shank of my bar?

Print the pin catalog 1: 1 to print 7 A4 sheets. If the file does not open, you need Adobe Acrobat Reader to view PDF files.

Be sure to turn off scaling before printing.

Attach the tire tail to the printout to identify the tire shank.

Shank types suitable for Oregon tires

The handle is designed for electric and chain saws: Alpina, Bosch, Castor, Cub Cadet Dolmar, Echo Efco Einhell Homelite Husqvarna Caviar, Jonsered Makita McCulloch Oleo-Mac Partner, Poulan / Poulan Pro Ryobi Shindaiwa, Skil Tanaka Zenoah

Handle is designed for electric and chain saws: Homelite Sabre

Handle designed for electric and chain saws: Einhell Husqvarna Jonsered Skil

The handle is designed for electric and chain saws: Alpina, Castor, Metabo Stihl Oleo-Mac /p>

How to Measure a Chainsaw Tire Correctly

Handle designed for electric and chain saws: AL-KO black Decker McCulloch Power Pruner / Echo Power Pruner saws, Ryobi Shindaiwa, Stiga /p>

Handle designed for electric and chain saws: Alco Black and Decker McCulloch Ryobi Shindaiwa, Stiga /p>

Handle designed for electric and chain saws: AEG, Alpina, Dolmar, Homelite Husqvarna Jonsered Makita Oleo-Mac Partner, Poulan / Poulan Pro Ryobi Shindaiwa, Skil, Tanaka Zenoah /p>

Handle designed for electric and chain saws: Alko, Alpina, Castor, Dolmar, Homelite Husqvarna Jonsered Makita McCulloch Oleo-Mac Partner, Shindaiwa, Solo Zenoah /p>

The handle is designed for electric and chain saws: Dolmar

The handle is designed for electric and chain saws: Alpina, Castor, Dolmar, Husqvarna Johnsered Makita Partner, Shindaiwa, Solo /p>

Handle designed for electric and chainsaws: Efco Jonsered Oleo-Mac /p>

The handle is designed for electric and chain saws: STIHL /p>

Handle designed for electric and chain saws: Dolmar, Makita Pulan /p>

The handle is designed for electric and chain saws: AL-KO, ECHO Poulan / Poulan Pro Tanaka Zenoah /p>

The handle is designed for electric and chain saws: Echo, Homelite /p>

The handle is designed for electric and chain saws: Hydrosharp, Oleo-Mac STIHL /p>

The handle is designed for electric and chain saws: Echo Hydrochief, STIHL /p>

Handle designed for electric and chain saws: Dolmar, Makita /p>

Chainsaw guide bar size recommendations

The bar is a must-have design for chain saws. Over time there is always wear and tear on this part, so it will have to be replaced sooner or later. This is where many owners find it difficult, how to choose a tire size and what to focus on when selecting. These questions are answered by our article.

How long should a chainsaw bar be?

The length of the bar is one of the main parameters for selecting this part for a chainsaw. Length has a direct correlation with the power of the tool. the best indicator of this parameter is specified in the technical description to a particular chainsaw model.

A long guide bar is not recommended for low-power tools for the following reasons:

  • will not have enough power and this will be reflected in the cutting speed;
  • fuel consumption will increase due to the higher load;
  • the engine wears out faster, as do all its consumables
  • oil is supplied with an unstable cycle and this contributes to overheating of the headset.

That is why you should use the right-sized chainsaw for a long and reliable life. Length measurement units are inches.

When buying a new bar it is important that it is exactly compatible with the other parts of the saw system and the chain saw mechanism in general.

  • If the chainsaw small and medium power range, it is usually equipped with tires 30-40 cm;
  • You can install a shorter one, but there are restrictions on the work of the tool with a longer length.

How to measure the parameter in question

If you can’t find the tool’s data sheet, you’ll have to find out the tire length by other means.

You will need a tape measure. You must measure the distance from the end face (the nose of the tool), to the beginning of the cut.

Also on the side of the headset you will often find the recommended length, although this description will wear off over time and the information will become inaccessible.

If you can not determine the length of the bar yourself, it is best to take a sample and with it go to the salesman of the relevant store. Experienced consultants have no problem finding the right size.

Other bar selection criteria

Other criteria must be evaluated in addition to length:

Thickness is another key point to consider. Groove thicknesses on guide bar and guide link must match perfectly. This ensures stable operation of the construction and prevents jumping at low saw speeds.

The guide bar pitch must match that of the chain. Wide guide grooves are designed for heavy loads and are used for professional or semi-professional tools. Narrow grooves. for chainsaws for domestic use.

The shank of the guide bar has a well-defined shape and holes with grooves to secure it. always has special technological holes on the shank. channels. Grooves on saw and guide bar are out of alignment, there will be problems with oil flow.

The bar is one of the most important parts of a quality chainsaw. It has a lot to do with the function and for this reason many manufacturers recommend to buy original parts for their machines. All steering rods are roughly divided into three application groups:

The choice must be made with care, because it is not only a guarantee of successful work, but also a guarantee of safety.

Chainsaw chain selection table. pitch, length by model

The shank is designed for both electric and chain saws: Alpina, Bosch, Castor, Cub Cadet Dolmar, Echo Efco Einhell Homelite Husqvarna Ikra, Jonsered Makita McCulloch Oleo-Mac Partner, Poulan Poulan Pro Ryobi Shindaiwa, Skil Tanaka Zenoah

The shank is designed for electric and chain saws: Homelite Sabre

The shank is designed for electric and chain saws: Einhell Husqvarna Jonsered Skil

Tailstock designed for electric and chain saws: Alpina, Castor, Metabo STIHL Oleo-Mac /p>

The shank is designed for electric and chain saws: Alko, Black Decker McCulloch Power Pruner Echo Power Pruner Polesaws, Ryobi Shindaiwa, Stiga /p>

Tailstock designed for electric and chain saws: Alko, Black Decker McCulloch Ryobi Shindaiwa, Stiga /p>

Shank is designed for electric and chain saws: AEG, Alpina, Dolmar, Homelite Husqvarna Jonsered Makita Oleo-Mac Partner, Poulan Poulan Pro Ryobi Shindaiwa, Skil, Tanaka Zenoah /p>

The shank is designed for electric and chain saws: Alko, Alpina, Castor, Dolmar, Homelite Husqvarna Jonsered Makita McCulloch Oleo-Mac Partner, Shindaiwa, Solo Zenoah /p>

Shank designed for electric and chain saws: Dolmar

Shank designed for electric and chain saws: Alpina, Castor, Dolmar, Husqvarna Jonsered Makita Partner, Shindaiwa, Solo /p>

Tailstock designed for electric and chain saws: Efco Jonsered Oleo-Mac /p>

Tailstock designed for electric and chain saws: STIHL /p>

Shank designed for electric and chain saws: Dolmar, Makita Poulan /p>

The shank is designed for electric and chain saws: Alko, Echo Poulan Poulan Pro Tanaka Zenoah /p>

The shank is designed for electric and chain saws: Echo, Homelite /p>

Tailstock designed for electric and chain saws: Hydrochief, Oleo-Mac STIHL /p>

The shank is designed for electric and chain saws: Echo Hydrochief, STIHL /p>

Shank designed for electric and chain saws: Dolmar, Makita /p>

Dimensional specifications

The guide bar on a domestic category chainsaw is 1.1 or 1.3 mm wide. The same figure for professional models is 1.5-1.6 mm. Imbalance in chain shank thickness and groove width can cause overheating of the headset and early failure. Otherwise the chain can slip out of the groove or break off.

Similar consequences can occur when chain and drive train pitch mismatch. Replacement of the drive sprocket in many chainsaw models involves time-consuming removal of the clutch unit. In some cases you need service and repair equipment.

Sprocket and saw chain pitches are the most common for saws under 3 liters.с 0.325. 3/8-inch sprocket spacing is common on professional chainsaws.

Bar sprocket is not centrally lubricated. This disadvantage is compensated by the high quality of the bearing, which must be lubricated every 8-10 hours of operation. A complete sprocket replacement of the driven sprocket is only possible in an equipped workshop.

Bottom line

A well-balanced chainsaw, chain and carefully selected guide bar will allow you to work efficiently and calmly, without excessive physical and material resources. And it should always be understood that the choice of components in the process of chain sawing, including the choice of tire, depends on the type of wood, working conditions, professional skills of the master. all of this is purely individual and comes with experience.

Not everyone knows how to measure a chainsaw bar. Chainsaw chains are available in limitless combinations of sizes, types, and features. This is because chainsaws themselves vary in size and application. When it’s time to replace the chain, it’s especially important to have all the correct information about the chainsaw and its chain size. Only then will you be able to make the change correctly.

Choosing the right chain for a chainsaw is a little more complicated than finding other power tool accessories because of the unique way in which the chainsaw bar is measured. The following information explains how chainsaw chains are measured, the difference between these measurements, and how to quickly find the measurement numbers needed to order the right chain.

Chainsaw chain length is compared to the saw bar measurement. Some manufacturers sell replacement chains based only on the measured tire. It is important to know that there is no universal chain. A chainsaw with a long guide bar will require a correspondingly longer chain. However, an accurate means of determining chain length includes several measurement options that ultimately affect how well the chain fits your chainsaw.

First of all, it is worth considering how to measure the length of a chainsaw tire?

  • Measure the distance from the tip of the chain saw to the point where the bar first comes out of the body of the saw. A tape measure comes in handy for measuring and getting this information. You need to round the measurements to the nearest even number, if the number was not exact. The resulting number is the tire measurement. The most common bar values are 16, 18 and 20 inches.
  • Lay out the chain on a flat surface. Look for chain links, which are sometimes called lugs. These links protrude from the bottom of the chain, and they grip the toothed drive, feeding the chain. Count the number of drive links in the chain.
  • Determine chain height. Measure the distance between any 3 consecutive rivets holding the chain together. Measure from the center of one rivet to the middle of the third link. Rivets are visible between the drive links and the cutters. the cutting teeth that lie on top of the chain. To find the height, divide the measurement by 2. The pitch, along with the number of drive links, describes the length of bar you need when looking for replacement chains.

The things you will need: a tape measure. A chain that does not fit properly on a chainsaw is dangerous. So if you’re unsure of your choice, ask a professional to help you determine the length of the tire and choose the right chain. Consult your chainsaw manual to make sure you are buying the correct type of chain.

Before operating a chainsaw or any power tool, read all the safety warnings in the manufacturer’s manual. Before replacing the chain on your chainsaw, disconnect the spark plug or battery to make sure the saw won’t start accidentally.

Also, chainsaw owners can read a helpful article on how to change the sprocket on a chainsaw.

Here are steps you can also take before you start looking for the right chain.

  • Find the chain pitch measurement by finding it on the tool, in the owner’s manual, or by dividing the distance between the 3 links by 2 (it is recommended that this be done by a professional).
  • Get a chain measurement either by finding it on the tool, in the owner’s manual, or by measuring the thickness of the chain drive links. All measurements must be accurate.
  • Calculate the number of individual drive links in the chain. No exceptions. Now the good news is, the rest is easy to do. If you have these three numbers, the right replacement chain will only take a few minutes. All you have to do is enter the correct measurements and number of links into a simple formula or online measurement calculator, and it will automatically determine the bar length.

All unique tire measurement systems require a little familiarity with terminology and other technical things. If you want to buy a new chain for your chainsaw, this guide will help in the best way. With the information provided in the article, it will be easier to narrow down your choice to the chain you need in your particular case.

Use the method you feel most comfortable with. The bar measurement is different from the actual chain length. Measuring your tire is important when you are replacing a chain or buying a chain for a future replacement. It is important for every chainsaw owner to know how to measure a chainsaw tire. The tire measurement expresses the length of the chainsaw’s guide bar, not the entire length of the bar, which is actually slightly longer. If you want to know the true length of your tire, you’ll need not only a tape measure, but also the effective measurement methods presented above.

Good day, dear readers!

The gardening and building season is heating up in some places, and in some places it’s been heating up for months. And at this time, certain tools are gaining in popularity. One of them is a chainsaw. What is the tool, we’ll talk another time.

But for now I want to tell you Everything you need to know about the numbers on the chainsaw bar.

Busbar, in plain and simple language. is a metal plate with a notch along the whole area.

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