Size charts for saw chains and chainsaw bars

In some situations, owners of chainsaws may experience some confusion in understanding all the chain markings for these tools. As a result, this leads to unsuccessful purchases. The choice of chainsaws is often determined by just a few basic criteria, one of which is the chain pitch. This indicator helps to highlight the future capabilities of the tool, including its cutting speed, and according to standards it must correspond to the engine power level. How are chains marked? Let's figure it out!

Basic circuit parameters

Chain marking requires the following parameters:

1. Step:

• «0,325» - the most common and minimum step size, which is used in semi-professional and household chainsaws with low power. The standard power value for such a step ranges from “0.325” to “3 hp,” but not higher than “3.5 hp.” When working with this type of chain, cutting occurs more smoothly, comfortably, without “breaking” the workpiece.
• «0,375» («3/8») – applied to chainsaws with a power of “4 hp”. This chain is used when sawing wood of medium and small thickness.

The accuracy and quality of the cut created depends on the pitch value. In cases where it is not important to achieve high quality when working with a chainsaw, sometimes the accuracy of the cut is of particular importance. To do this, it is necessary to take into account the dependence of the step on the dissolution of wood according to pre-applied markings.

1. The thickness of the leading links (tails). When a chainsaw is operating, its chain bears the majority of all loads. Taking this into account, another main characteristic of the operation of the saw is the thickness of the elements of the link that fits into the grooves of the bar. This parameter also determines the overall thickness of the fastening links, which is measured using a conventional caliper. Standard thickness values ​​include:

• “1.1 mm” (“0.043”) and “1.3 mm” (“0.05”) are used in the production of entry-level chains that are intended for small amounts of work. Often, with such values ​​of link thickness, the chain pitch length can be “0.325”, which implies the presence of low loads and a gentle operating mode. Therefore, they are used in household and semi-professional devices;

• “1.5 mm” (“0.058”) is the most common thickness value on the market for chainsaws and their accessories. This value can ensure safe operation with a step size of “3/8”. A 1.5mm thick chain is not intended for professional cutting;
• “1.6 mm” (0.063) and “2.0 mm” (0.08) - are intended for the most difficult work. The metal used in the manufacture of such chains is steel of special grades, and the design includes characteristics of increased strength.

The greater the thickness of the link and the wider the groove of the bar, the higher quality the chainsaw is considered, since it can withstand heavy loads.

1. Cutting depth is a distinctive feature of the chains produced and is characterized by the profile height of the cutting teeth. It is measured by the gap between the stops and the cutting upper edge. Both high-profile (0.762 mm) and low-profile (0.635 mm) types of chain products can be presented on the market.

The higher the profile height, the higher the entry into the material (depth) and the cutting speed.
High-profile chains are installed on chainsaws with increased engine power. Information about the profile height is usually written down in the specifications for the tool.

The profile affects the occurrence of vibrations, which subsequently cause wear of the drive or problems when holding the tool in the hands. Moreover, the higher the cutting parts, the stronger the degree of vibration will be.

Household types of chainsaws are equipped with a low profile. Semi-professional devices can combine different types of circuits. However, in most cases the following principle is followed:

In a chain with a large pitch, a low profile is installed, and with a pitch of “0.325” - a high one

Such variations increase the cutting speed not due to the step, but due to changes in the depth or height of the profile. Although in professional tools the emphasis is on increasing the pitch, explaining this by the fact that the chainsaw becomes more controllable.

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

• chipper (popularly “sickle”) – has a crescent shape and is characterized by high productivity. During operation, it is easier to sharpen and does not require strict sharpening angles. Disadvantage: risk of high loads and deterioration of cutting characteristics;
• chisel (popularly “seven”) - has a straight-shaped working surface in the form of the number “7”. Used in chains with a pitch of “0.404” or “3/8” on professional saws. The main disadvantage of chisel links is the difficulty of sharpening the cutting elements and sensitivity to dirt.

Portal about construction

How to choose a chain.

In fact, the circuit has many parameters. This includes the sharpening angle of the chain, the steel grade, the tooth profile, etc. All these parameters are needed primarily for professionals. For a simple user who needs to trim trees in the garden or cut firewood, the most important are four parameters (as a rule, all parameters are indicated on the package). Length, thickness, chain pitch and number of links:

1. The length of the chain is selected to match the length of the blade. Those. If the bar is 14" long, then the chain should be 14" long.

By number of links: 14” - 50; 52 teeth. 16” - 55; 56 teeth. But here you need to take into account the chain pitch.

Let’s say a chain of 56 links with a pitch of 0.325 will be 13” in size,

and a 56 link chain with .375 (3/8) pitch would be 16”.

Those. With the same number of teeth, but different pitches, the chain length will be different.

2. The thickness of the chains is 1.3 mm. 1.5 mm. 1.6 mm. Selected to match the width of the tire groove.

3. Chain pitch is the distance between the three rivets divided by two. Pitch is measured in inches.

Pitch 0.325 (8.25 mm.) 3/8 (9.3 mm.)

Tire.

1.Length (in inches) 14”(35 cm); 15”(38 cm); 16”(40 cm); 18”(45cm), etc.

This is not the length of the entire tire, but that part of it that protrudes after the chainsaw body.

2. The width of the groove along which the chain links run. Grooves are 1.3; 1.5; 1.6 mm.

This is an important parameter because the thickness of the chain is also 1.3 thick; 1.5; 1.6mm.

3. The tire is selected to match the chain pitch. Those. Chain pitch and bar pitch should be

Match each other.

4.And one more parameter that should not be forgotten. This is chain lubrication.

Some chainsaws are lubricated from above, and some

through a hole in the tire.

All these parameters are written on the tire or on the packaging.

Source: stroyka.ahuman.ru

Review of Stihl chains: marking, purpose

All Stihl chains are marked, thanks to which they can be identified and determined for which models of chainsaws and types of work they are intended.

The name of the chain model must indicate its length (number of links), pitch and width. The type is also indicated. Type is an internal brand designation, thanks to which company specialists can determine the type and shape of the cutting tooth, the dimensions of the link and connecting elements. The designation can be complete, or it can be abbreviated in capital letters, for example, the Picco Micro 3 chain, abbreviated as PM3.

The average user, in principle, does not need such information, because in order to choose the right headset, it is enough to know the characteristics of the chainsaw, the planned volume and types of work.

For ease of selection, the Shtil company website has an electronic consultant that automatically generates a list of chains suitable for a specific chainsaw model.

The service is convenient and understandable, but it has one big drawback: you can only select chains for Shtil chainsaws. If you have a different chainsaw, then you will have to search by characteristics and name, which is not very convenient, since the list of models is quite large.

Below we suggest watching a short but interesting and informative video about Stihl chains, their production process and quality control.

Now let's look at specific models of Stihl chains, their markings, characteristics and purpose.

Picco Micro (PM)

Stihl chain with a low profile, recommended by the manufacturer for use on lightweight chainsaws and loppers. The peculiarity of the chain is a soft cut, with reduced kickback. It has four versions, which differ in the number of links. This:

1. 3/8″ P Picco Micro (PM), 1.3 mm (50);
2. 3/8″ P Picco Micro (PM), 1.3 mm (51);
3. 3/8″ P Picco Micro (PM), 1.3 mm (55);
4. 3/8″ P Picco Micro (PM), 1.3 mm (56).

This chain can be used on Shtil MS 180, 250 and etc. chainsaws. etc. Recommended retail price from 490 to 550 rubles. The specific price depends on the number of links. Also, the Stihl saw chain can be sold in coils of 50 and 100 meters, and can be riveted using a Shtil riveting machine or similar. Information on how to rivet correctly can be found on our website.

3/8″ P Picco Micro Mini 3 (PMM3), 1.1 mm

A distinctive feature is the narrowest possible cut. Abbreviated designation PMM3. It is recommended for entry-level chainsaws, as well as hedge trimmers and hedge trimmers. Has three versions:

1. 3/8″ P Picco Micro Mini 3 (PMM3), 1.1 mm (39);
2. 3/8″ P Picco Micro Mini 3 (PMM3), 1.1 mm (44);
3. 3/8″ P Picco Micro Mini 3 (PMM3), 1.1 mm (50).

Can be used on Shtil MS 170, 180, 211, 230 chainsaws. Belongs to the comfort class, because it has minimal vibration and recoil.

Important: a chain with a width of 1.1 mm must be used with a corresponding bar, otherwise it will dangle in the mounting socket, which will lead to rapid wear of both the headset itself and the guide bar.

1/4″ P Picco Micro 3 (PM3), 1.1 mm

Recommended especially for pole saws and compact chainsaws, for example, MS 150 TC-E or MS 193 T. It is considered exclusive because it has a non-standard 1/4″ pitch, narrow and flat design. It has three versions, the length of which is 56, 64 or 72 links.

3/8″ P Picco Micro 3 (PM3), 1.3 mm

This model belongs to the comfort class and is intended for professional use on light and compact chainsaws. The chain offers high performance, comparable to standard performance, while reducing recoil thanks to its low profile. There are several options:

1. 3/8″ P Picco Micro 3 (PM3), 1.3 mm, 50 links;
2. 3/8″ P Picco Micro 3 (PM3), 1.3 mm (51);
3. 3/8″ P Picco Micro 3 (PM3), 1.3 mm (55);
4. 3/8″ P Picco Micro 3 (PM3), 1.3 mm (56).

3/8″ P Picco Super (PS), 1.3 mm

Picco Super, according to the manufacturer, is the world's first chain that has a chisel tooth. Developed by Shtil specifically for forestry professionals. Easy cutting, comfortable level of vibration and smooth running. It has a clean cutting surface, which is important for those who carve wood with a chainsaw. Execution options:

1. 3/8" P Picco Super, 1.3mm (44);
2. 3/8" P Picco Super, 1.3mm (50);
3. 3/8" P Picco Super, 1.3mm (55).

Can be used with both professional, semi-professional and household chainsaw models.

1/4″ Rapid Micro Spezial (RMS), 1.3 mm

Designed specifically for shaped wood cutting. A distinctive feature is the shortened upper edge of the tooth, thanks to which there is no need to put pressure on the saw in order for the chain to cut into the wood. It is characterized by high speed and smoothness when performing curved cuts compared to conventional chains that have a similar 1/4″ pitch. Available in two versions:

1/4 Rap >Rapid Micro Chain Series

VORTEX SZTS-200

VORTEX SZTS-200 is a simple, compact and very convenient machine that allows you to sharpen any chain, regardless of its size and link pitch. The device has a 200-watt motor capable of up to 6000 revolutions per minute. This performance allows you to sharpen chains in the shortest possible time. And thanks to convenient adjustment using guide bolts, setting up the tool takes less than a minute. The machine is assembled from high-quality materials, and thanks to the channels provided in its design for removing hot air from the body, this machine does not overheat even during prolonged operation. So it will serve its owner faithfully for many years. Among other advantages of this machine, it is worth noting the precisely adjusted center of gravity and balancing, which eliminate vibrations during operation. And thanks to the presence of a comfortable handle, this machine will be comfortable for both right-handed and left-handed people. Also, this machine is notable for its light weight, which allows you to easily transport it from place to place. In general, an excellent option for both domestic use and specialized services, which owners like for its compactness and performance.

• Power: 200 W.
• Speed: 6000 rpm.
• Landing D: 10 mm.
• Circle size: 100 mm.
• Weight: 2 kg.

Which chain to use for rip sawing

Chainsaw users often receive a question: which chain is suitable for rip sawing and whether there are chains specifically designed for this purpose.

At the moment, there are no chains specially designed for sawing a tree trunk lengthwise, and most likely there will not be any, since any saw chain can be used for these purposes. The difference between a regular headset and a longitudinal one is the sharpening angle.

Using a straightening machine, you can make a special one from a regular set - one that facilitates longitudinal cutting. You can find information on exactly how this is done on our website.

Unique developments in Stihl chainsaws

STIHL AG produces a full range of gasoline saws: from light amateur models for periodic use in the garden to semi-professional and professional units that can operate without interruptions for engine cooling, while performing a huge amount of work. The entire line of Stihl chainsaws is based on the company’s patented developments, which have proven their effectiveness through many years of operation:

a unique STIHL 2-MIX engine that ensures complete fuel combustion, a minimum level of harmful impurities in exhaust gases and high efficiency;

• muffler with catalytic afterburning of hydrocarbons, used as additional equipment;
• air filter with preliminary rough air cleaning using a cyclone;
• intelligent carburetor adjustment, which allows you to automatically adjust the quality of the air-fuel mixture when the operating mode and external operating conditions of the unit change;

• decompression valve facilitating cold engine starts;
• heating system for the carburetor and handles, which makes it possible to use the Stihl chainsaw at extremely low temperatures.

Additionally: Chainsaw bar length. Should it be taken into account?

Which chain is better Stihl or Oregon

It is quite difficult to choose which chain is better, Shtil or Oregon, because they are almost the same in quality. The Oregon company, like Shtil, specializes in their production and invests in development, constantly improving and releasing new models.

If you compare at the user level, the Oregon is a little softer, they dull faster, but they are easier to sharpen with a file. Shtilevsky ones are almost all hardened, the metal is difficult to sharpen, but holds an edge a little longer.

Interesting. According to experts, the issue of headset quality is relative. Many users first use used motor oil for lubrication, and then say that this or that model and brand of chain is of poor quality, although the reason for premature wear lies in metal shavings, which are contained in any used oil, even that which has had time to settle before filling.

How to use the table?

The left column indicates the most common models of chainsaws, and the following ones indicate the leading criteria. Having found the desired modification of the tool, you can find out the necessary data regarding its saw part within a few seconds and quickly resolve any controversial situation.

Source: sadovij-pomoshnik.ru

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Marking of saw chains Stil Link to main publication

Reasons for rupture of the saw set

Sometimes, while using a chainsaw, the headset may break. This phenomenon is not common, but occurs from time to time. There may be several reasons, the first and most common is severe wear and tear. During operation, the edges rub against the bar, as a result the metal gradually wears off and the chain, unable to withstand the load, breaks.

Important! The use of high-quality adhesive oils can significantly extend the life of the saw set.

The second reason is the untimely replacement of the drive sprocket and saw bar or their replacement separately. According to the recommendations given by manufacturers, the saw set, bar and drive sprocket should be replaced as a set. This will prevent wear, stretching and tearing as a result of increased loads.

Third, this is a defect when sharpening with a special sharpening machine. The machine disk rotates at high speeds, and if the groove depth is set incorrectly or for some reason the working stroke of the machine increases, then a split second will be enough to trim the edges of the connecting links. If after sharpening you do not check its quality and the presence of cut links, then during work under load, the cut link may break.

The fourth and last one is a defect in the rivets. A common cause of chain breakage is improper connection or reuse of connecting links. If your cutting set is torn, then information on how to connect the chain will be very useful.

User manual

Device

The saw has a fairly simple design.

The durable body is made of polyamide covered with fiberglass. For convenient starting and a secure grip during operation, a front tubular handle and a rear handle are provided. The fuel and oil tank caps are located on the body.

Chainsaws have a two-stroke engine. For longer service life, a chrome-plated sleeve is installed. The carburetor has one speed control bolt.

The QuickStop brake ensures safety under increasing loads. The convenient location of the lever allows the user to immediately turn off the tool. When the load is very heavy, automatic shutdown is triggered.

Preparing for work

Before starting work you need to check:

• check the fuel system for leaks, as its absence may cause a fire;
• serviceability of the brake, front hand protection;
• correct installation of the guide bar;
• correct tension and chain;
• mobility of the throttle lever and its lock. The gas lever should return to its original position after it is released;
• easy installation of the combination lever in the STOP, 0 position;
• tight fit of the contact tip of the ignition wire;
• a sufficient amount of fuel mixture and chain lubricant in the tank;
• clean and dry handles for a stable grip on the saw.

To avoid accidents, the saw should only be used in good condition.

Break-in period

In the usual sense, running-in for Stihl saws is not carried out

But it is important for operators to know the following points:

During the first 4-8 completely spent fuel tanks, it is necessary to use the saw in a gentle mode with regular stops for cooling. The first hour of operation must be divided into periods: 2 minutes of work, 10 seconds of rest

Idling for more than 10 seconds has an adverse effect on the safety of the combustion plugs. It is important to use a high-quality mixture. . The important question is which gasoline is better to use

According to the instructions, it is recommended to use fuel with an octane number of at least 90. Based on the practice of using domestic fuel, it is better to use gasoline with an octane number higher than 92.

The important question is which gasoline is best to use. According to the instructions, it is recommended to use fuel with an octane number of at least 90. Based on the practice of using domestic fuel, it is better to use gasoline with an octane number higher than 92.

Maintenance

Before starting work, carry out the following checks and adjustments as required:

1. Condition of the chain, its sharpening, degree of tension.
2. Density of fasteners.
3. Refilling tanks with fuel and oil.
4. Chain lubrication.
5. Idling.

To sharpen chains, you should use proprietary tools and a machine. The original sharpening devices perform their function accurately and without damaging the saw chains.

After use you must:

1. Clean the chainsaw.
2. Release chain tension.
3. If necessary, sharpen the chain.
4. Check the condition of the tire and filters.

Simple but effective test

A good way to make sure you make the right choice. To do this you need the chain itself and your hands. What additional tools and equipment are required?

It's simple. You need to grab one end of the chain and straighten the other end as far as possible in front of you. Now see how the product behaves.

If the far end bends only a little, that is, goes down, then you have the original. The probability is more than 90%.

If the chain sags a lot, then this is a fake.

This difference in behavior between genuine and fake chains is not difficult to explain. In the production of real instruments, the teeth undergo 17-22 special technological processing methods. For fakes, this is at best 10 treatments.

But I don’t recommend using this test to determine authenticity. Take into account all the characteristic features and also study the packaging.

Fake chainsaw

Why is it so appropriate to counterfeit the Stihl brand? The fact is that the color scheme of the saw and its completely standard dimensions and characteristics make it possible for Chinese “masters” to replace their cheap chainsaws with well-known brands. Very often, the Chinese saw “Shain Saw 5200” could become an inexpensive Stihl MS 660 with simple visual changes.

First of all, the original can be identified by its characteristics, because a heavy saw is really “heavy” and powerful, its weight is 7 kg and its power is 7 hp. If the weight and dimensions can be faked in simple ways, then the power, unfortunately, will be half as much. Therefore, the two versions of Shtil 660 will have different purposes:

• Original - used on sawmills, works with various woods and can be used continuously for several hours;
• Fake - low power and average quality makes it possible to use the saw for domestic purposes, equating it to amateur models.

Due to the low cost of the fake, this is an excellent choice for those who want to work with a chainsaw in domestic conditions; it can easily cope with branches, preparing firewood and other household tasks. If handled correctly, Shtil 660 will serve for a long time without breakdowns. The low price will allow you to use the fake for various purposes; use standard fuel for chainsaws as fuel. But be extremely careful, especially greedy sellers can make a strong markup on a cheap saw, equating it to a real original.

Original China

Also on sale are the Shtil MS 660 models, which are considered original, but are manufactured in China using Chinese spare parts. Residents of the Middle Kingdom have been using this technology for a long time; in some cases, it happens that the Stihl brand assembles its saws in Germany, but from Chinese spare parts. Chinese parts and cheap labor are forcing more and more companies to relocate their production.

Main differences

Chinese chainsaws Shtil 660 are easy to distinguish; to do this, be guided by the following differences:

1. The original always provides a complete set of original instructions with all the information, including the manufacturer;
2. The fake has a less attractive body color, not so bright and rich;
3. The Shtil 660 chainsaw has a starter, or rather its housing, that is significantly different;
4. There are differences in the tank caps (for oil and fuel), on the German version the caps are designed to fit a combination screwdriver (included), the copy has convex, ugly caps;
5. The original always has a serial number located in the housing area immediately below the muffler.

Any original Stihl chainsaw is confident in its quality, therefore it is sold with a warranty card.

The main disadvantages of the Chinese chainsaw

Unfortunately, low cost plays a role; the saw can work for several months, or it can completely fail in the first days. It all depends on the integrity and hands of the Chinese who make the fakes. But we have highlighted the main disadvantages of the Chinese chainsaw Stihl 660:

• weak unreliable clutch mechanism;
• poor quality return spring on the starter;
• cheap air filter housing, made of cheap plastic; very bad tire, it is recommended to change it immediately after purchase.

Instructions for use

The instructions for the Stihl 660 chainsaw are found mainly in German models; counterfeits can copy this data and indicate it in their manual. It is said above that a fake will not withstand the minimum load on a sawmill, so use the saw carefully and only for household purposes. Fill in good oil in the right proportions, monitor the wear of parts in a timely manner and adjust the carburetor. This will increase the service life of even an inexpensive Chinese fake.

If you decide to get a really high-quality Stihl chainsaw for household purposes, check out the review of the Stihl MS 180 model.

Technical support for branded Stihl chainsaws

The history of the Stihl company begins in 1926, when the production of electric miter saws was launched at the Andreas Stihl machine plant registered in Germany.

Shtil chainsaws are considered one of the most reliable

The first chainsaw, the weight of which exceeded 46 kg, and the power was only 6 hp. pp., was presented to the public in 1929. 90 years have passed since the release of the first chainsaw. During this period of time, many changes have occurred in the company, but one thing has remained unchanged - the excellent quality of the products manufactured by Stihl.

In modern chainsaw production, various innovative technologies and unique techniques are used. Let's take a look at some of Stihl's patented technologies that enhance tool performance and ensure maximum operator protection.

Technology 2 MIX

2 MIX technology allows you to reduce fuel consumption and minimize the amount of exhaust gases. 2 MIX technology means a unique method of purging the combustion chamber with clean air, thanks to which no residual fuel mixture is released into the atmosphere.

Catalyst

A special device called a catalyst burns the remaining fuel mixture in the muffler. Since the heating temperature is too high (about 1000 degrees), the catalyst body has double walls. This protection prevents the tool from heating up during operation and, accordingly, prevents the possibility of burns for the operator.

Please note that the catalyst is not included in the basic package of most Stihl chainsaws presented in the model range. You can purchase and install the device as additional equipment

Air filter

The Stihl company has developed innovative air filters that are characterized by high wear. Preliminary cleaning is carried out due to centrifugal force, and accordingly, the load on the filtration element is reduced.

The air filter, developed using a unique technique, can be washed under running water, cleaned with gasoline or air.

The main advantages of Shtil chainsaws

Intelligent engine

The intelligent engine system from the developers of the Stihl company has no analogues in the world. The quality and quantity of fuel consumed is controlled electronically; the need for manual adjustment is no longer necessary.

Chainsaws with an installed intelligent engine are easy to start and have a stable crankshaft speed.

Decompression valve

Installing a decompression valve allows you to reduce pressure when turning the starter. The decompression valve must be opened before starting the engine. After the first flash of the fuel mixture, which occurs when the device is started, the valve automatically closes.

Carburetor heating system

As you know, when the temperature drops to negative levels, problems with the operation of chainsaws are observed. At sub-zero air temperatures, carburetor icing occurs. The developers of the Shtil company managed to solve this problem by installing an automatic carburetor heating system.

The carburetor heating system consists of a thermal switch and a heating element. When the air temperature drops to +10 °C, the thermal relay turns on and power is supplied to the heating element.

Electric handle heating system

Electric heating of the handle increases the operating comfort of the tool. This system prevents snow from sticking and ice forming. Models of chainsaws that have a heating system for the handle are marked with the letter “W”.