What metal are the pipe cutter rollers made of? Pipe cutter for steel pipes

Carrying out various communication, construction and repair and installation works involves cutting steel pipes into fragments of the required sizes. To do this, you can use a simple tool at home, for example, a hacksaw.

But it’s smarter and more practical to purchase a pipe cutter for steel pipes. This unit will speed up the process and make it much less complex and labor-intensive. Let's look at the varieties of this tool, the principles of its operation, as well as the features of choosing equipment.

Modern models pipe cutters designed for cutting steel pipes of various diameters differ in the type of drive.

Manual the tools are considered the simplest and do not require special skills to use. Usually they are simply fixed in the processing area, made several turns and a fragment with a clear cut is obtained. However, this option requires the use of significant physical effort and is not suitable for large-scale work.

A manual pipe cutter is very easy to use, but using it for a long time without proper physical training will be quite difficult. It is better to leave it as a one-time “assistant” for solving local repair and installation problems

Electrical the units are made from stronger, wear-resistant materials, so they are suitable for active use, easily cope with intense loads and can efficiently cut steel pipes of any diameter, including large ones.

Electric pipe cutters not only make a clear, even cut without burrs, but also process the end areas of the part.

Pneumatic Pipe cutters are professional equipment. They provide high precision processing and quickly make the necessary cut.

They cut pipes of any thickness (from thin-walled to 60 mm). They allow you to carry out the necessary work in a small room and have the function of boring the inner diameter of the pipe for subsequent welding.

Possess high power and easily cope with increased industrial-scale loads.

In everyday life, pneumatic pipe cutters are used extremely rarely, as they have significant weight and impressive dimensions. They usually come with a special trolley designed to move the unit around the work area.

Hydraulic Pipe cutters do not require connection to an electrical network, and operate using the principle of liquid pressure. Pumped through the pump, it acts on the piston and puts the unit into action. When the water pressure decreases, the cutting elements return to their original position.

Tools of this class are more powerful than manual ones, but they are inferior to electric devices in all respects.

The choice of unit, first of all, depends on the amount of work that is planned to be performed. For one-time use, a simple one is enough hand tools, and for large-scale events (such as laying communications on a personal property) it is better to use the electric option.

If there is no way to connect to the network, you will have to consider purchasing or renting a hydraulic pipe cutter for household purposes. In industry, it is most productive to use pneumatic machines for cutting steel pipes.

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When cutting steel pipes large diameter It is not recommended to place a working element for wood or stone on a grinder. A discrepancy between the density of the cutters can cause damage to the workpiece, and subsequently lead to failure of the tool itself.

But nevertheless, the grinder is only suitable for one-time cutting and cutting work. For regular large-scale events, it makes sense to acquire a more durable and powerful unit.

You can read more about the different types of pipe cutting equipment in

Rules of operation and care

In order for the pipe cutter to serve for a long time and reliably, to perform high-quality cutting and not to damage the pipe walls during operation, it is very important to choose the optimal level of clamping of the steel part.

Do not over-tighten the workpiece. This can cause a discrepancy between the beginning and end of the cut line, creating an unaesthetic appearance of a screw thread on the part.

If the steel pipe is clamped in the pipe cutter clearly, but not too tightly, the cutting will take place quickly, there will be no screw mark left on the part, and the edge will be smooth and even.

The rotation of the mechanism should be carried out evenly, but not very quickly. Otherwise, the walls will collapse and excess cut metal will form at the cut-off point.

For correct and long service after work, the surface of the cutting roller, feed screw and guide rollers are cleaned special means, and then treated with lubricant.

The outer surface is inspected for dents or other damage, and chips are sanded so that they do not interfere with subsequent work. The cutting elements (cutter or roller) are inspected for dullness and, if necessary, immediately replaced.

For storage, the pipe cutter is left in a dry and warm place. After such procedures and comfortable conditions When stored, the device will remain operational for a long time and will easily cope with all tasks.

Conclusions and useful video on the topic

How a pipe clamp cutter works: detailed video instructions on how to use a manual pipe cutter equipped with a clamp. The reliable unit has good power and copes with parts with a diameter from 32 to 365 mm.

Cutting steel pipes with a roller pipe cutter: the video clearly shows the process of cutting steel pipe material with a diameter of 3 to 150 mm with a roller unit.

The manual model copes well with one-time work, while the electric model is suitable for larger repair and installation projects.

A split pipe cutter for steel in operation: how a split cutting device works with steel pipes can be clearly seen in this video. The device has a useful function that allows partial cutting of the pipeline even without access to the end part of the system.

The device is equipped with an electric or pneumatic drive and provides maximum cutting accuracy while using a minimum space around the pipe for work.

Knowing all the nuances described above, choosing the optimal one will not be difficult. For additional advice before purchasing, you should contact the store staff. They will talk in detail about the models offered and describe all the pros and cons of products from various brands.

Are you looking for a pipe cutter for home use? Or do you have experience using similar devices? Share it with our readers. Please tell us which model you chose, are you satisfied with your purchase? Write comments under the article.

A manual pipe cutter is a convenient and efficient, almost portable device for cutting rolled pipe products. External simplicity does not mean low applicability, and we will try to prove this in this article.

A manual pipe cutter for steel pipes or any other material works solely using human muscle power. On the one hand, this is good, because you directly control the entire process, and no emergency situations can happen, unless your hand trembles. While at electric machines There are a lot of components that can fail; you constantly need to clean them and monitor their technical condition. And during operation, a pipe can be damaged only due to a power outage or a momentary malfunction of the motor or moving belt, etc.

On the other hand, not every pipe will be taken by human strength, even though handheld device a lever system is used to artificially increase the applied force. But at the everyday level, it’s hard to imagine a type of work in which pipes would have such a diameter or material that only an autonomous machine with a powerful engine could handle them. Therefore, still manual option This household device will cope with everything possible types works, you just need to choose the right model, because the variety is great.

We can talk about some more features of working with this unit. very comfortable, all attachments and the handle are made as ergonomic as possible so that the worker does not get tired and the cut is neat and even. By the way, accuracy and lack of curvature are the hallmark of almost all types of manual pipe cutters, only a very careless fake of the “for 5 kopecks” category can really ruin even the strongest product. Of course, we do not exclude some “club-handedness” of the worker, but this is a rare case in this type of activity.

Working with a manual unit is carried out at a pace convenient for you, so the cut is obtained without any nicks and does not require cleaning before further use pipes. Also, the designs of all such tools (provided that you have chosen the right model specifically for your task) allow you not to bend the pipe profile, so you don’t have to spoil the geometry. And the last trump card is their small size; these devices can perform their task equally well in a narrow passage or corner, and in a spacious hall.

These devices have many designs, and each plays a specific role in cutting pipes. They may differ in the type of materials processed and in design features. Most often, a manual roller pipe cutter is chosen for household needs; its design and strength of the mechanisms allow it to work with steel, copper and plastic. However, if you don’t need such a spectrum, you can choose something simpler. Let's look at the process of buying a pipe cutter.

Having purchased a tool for durable material(for example, steel), you get a device that can cope with all less durable types of pipes, but the opposite pattern does not work in this case. When choosing a pipe cutter, it is important to pay attention to the thickness of the workpiece, which it can cut through. There are at least three categories: for heavy loads, for thin-walled products and for asbestos cement and ceramics.

In the first case, you get a unit that will cut through even a 12-inch pipe, and will handle both steel and cast iron, and the design has reliable clamps for fixing the workpiece, the main thing is that you have enough strength and perseverance. Last class instruments are most often not manual type, so we won’t dwell on it. But for working with thin-walled pipes, muscular strength is just right, and such devices are most waiting for us on the shelves; you can choose models for copper, brass, metal-plastic and stainless steel.

By type of construction there are also many various models. For example, a chisel pipe cutter looks like a kind of clip into which the product is placed, and along its perimeter there are cutters, the set of which and their location can be varied. This device can handle a product diameter of about 10 cm. But the roller pipe cutter got its name because cutting elements, these are rollers; as a rule, there are at least three of them, and the more there are, the larger the diameter of the workpiece.

If there is only one roller, then the diameter will be very small - up to 5 cm, but three rollers will already handle 10 cm of pipe. They say that the rollers leave burrs, which is not very convenient in subsequent work; they have to be cleaned later, this process is called countersinking. For fragile types of pipes (ceramics, cast iron, concrete), chain tools are used, however, the condition is that the diameter of the product is small.

The working element is a chain on which there are small cutting rollers; it wraps around the pipe, and as it moves, systematic cutting occurs. There is also a guillotine mechanism, when the tool acts like ordinary scissors, only it is not paper that is cut, but a pipe. Of course, this method is suitable for thin-walled plastic materials, for example, plastic; copper can also be processed in this way, if the thickness allows.

If it is necessary to cut steel, a roller tool is most often used. For the simplest representative, the progress of work will be approximately as follows. The object is first marked along its entire length. If you are cutting metal, you need to moisten it; for this you can take oil or ordinary water. at. Now you should install the pipe in the clamp that is available on the pipe cutter. We open the clamping block, insert the object, apply the cutting roller to the line we drew and screw the locking mechanism well.

Now you need to rotate it, gradually tightening it, increasing the tension in the block, this will cause the pipe to split exactly along the mark. Quite fast and effective method cut.

When you have metal-plastic or even polypropylene in front of you, then a guillotine pipe cutter is quite suitable. For a successful cut, we apply a mark where the division needs to be performed. Then we move the handles of the tool apart, grasp and close them so that the blade touches the mark. Now all that remains is to press the handle so that the guillotine knife clearly passes through the entire diameter, it is important to apply enough force, and the process can be considered complete, you just need to align the profile internal diameter, because it wrinkles a little.

If the diameter is large, then such work requires a little more time, because the rollers in a pipe cutter for such sizes will need to be moved around the circumference, and they will cut deeper and deeper into the material. The more patient you are, the longer your tool will last. At first, you should cut the rollers into the pipe quite a bit and deepen them a little at each circle, but if you cut them deeply at once, or deepen them too quickly during work, the service life of the tool will be significantly reduced, because the wear of the rollers will be rapid.

In plumbing, when working with steel pipelines, it is often necessary to divide the original workpiece into fragments certain size. Of course, a universal hacksaw for metal can help out, but it is not always convenient to work with it, and the ends of the cut parts must be subsequently cleaned. A properly selected pipe cutter can handle such operations much better.

Types and classification of pipe cutters

The task of a pipe cutter of any design is not only to quickly cut the pipe, but also to properly fix the workpiece before processing. Especially when it comes to steel pipes, which require much more force to separate than copper or plastic products.

Pipe cutters for steel pipes are distinguished according to the following characteristics:

1. According to the thickness of the pipe wall (there is a tool that is designed for cutting thick-walled pipes).
2. According to the design of the clamping unit, pipe cutters are available with clamp, lever and screw clamps.
3. According to the design of the cutting unit - roller, chain, cutter or ratchet (the latter is more often used for cutting low-plasticity materials, and chain pipe cutters are more useful when cutting metal-plastic pipes).
4. By type of drive - manual, electric or hydraulic. IN professional production tubular blanks Pipe cutters with pneumatic drive are also used, but although they cut pipes with a diameter of up to 120...130 mm, they are quite cumbersome and require a compressor.

A pipe cutter for steel pipes should also have some unique features. For example, the blades of the working tool (regardless of the design) must have a hardness that is no less than 15...20 HRC greater than the hardness of the pipe material. In order to perform such an assessment, a well-known method is used to determine the approximate chemical composition of the steel pipe material using the “spark test” method. To do this, the end of the pipe is processed using an emery grinder. The approximate percentage of carbon will be determined most accurately, but in this way it is also possible to identify tungsten, molybdenum and manganese, and, therefore, establish the initial hardness and even the approximate grade of the steel pipe material:

• For low-carbon non-alloy steel, the spark beam will be quite continuous and have a light yellow color;
• For medium carbon non-alloy steel, while maintaining the same beam color, the number of branches and brighter flashes will increase;
• For ordinary quality steel, the spark stream will be thinner and the branches will be shorter. There are practically no outbreaks;
• For alloy steel, the color of the sparks will change to deep yellow, and at their ends, instead of flashes, arrows more elongated along the flow will be observed.

Knowing the approximate hardness of the listed steels, you can select the optimal hardness of the working blades.

Working principle of manual pipe cutters for steel pipes

The easiest way to cut material is with roller pipe cutters. The main unit of the tool is a rigid holder, in the moving part of which disk knives are installed (there can be one, two or three of them). The relative position of the knives can be adjusted depending on the outer diameter of the pipe (the limit for roller pipe cutters is considered to be a diameter of up to 100 mm). For long pipes, a tool is available that also includes guide rollers. They provide longitudinal stability of the workpiece when cutting it.
Before using a roller pipe cutter, perform the following preparatory steps:

• Wet the separation surface: this cleans the outer perimeter and partially removes rust/scale;
• Using a clamp, secure the pipe in the holder, focusing on the marked cutting line;

Next, using a rod, the cutting head is moved around the perimeter of the pipe, and, gradually increasing the feed, the cut is performed. With well-sharpened knives, the cut is clean, without burrs. In order to simplify the design, in roller pipe cutters designed for pipes of small diameters - up to 20...30 mm - the rod is combined with a handle, when moving it the cutting is carried out.

It is not recommended to use roller pipe cutters to separate pipes with a diameter of more than 40 mm. Although the price of such a manual pipe cutter is small, the cut is not of sufficient quality, and the physical effort expended is quite large.

More simple design have chisel pipe cutters, which are widely used in living conditions for cutting steel pipes with a diameter of up to 10...15 mm. Instead of rotating when cutting circular knives Here, cutters are used, which, with an ever-increasing feed, gradually bite into the thickness of the steel. It is advisable to use manual pipe cutters for cutting pipes made of plastic materials (up to steel grade 15kp inclusive, or for ordinary quality steel grades St.1 or St.2kp). In this case, the specific load on the cutters is minimal, and the tool does not require frequent sharpening, which requires a certain amount of skill. You can reduce the effort by using surface lubrication with low-viscosity industrial oil or any coolant.

For cutting pipes of especially large diameters (up to 150...200 mm), rotary pipe cutters with a telescopic mechanism for turning the rollers are used. Such designs are convenient in that they can be used in unfavorable working conditions (for example, in recesses or pits). The rollers here are mounted along the outer perimeter of the pipe, and then, using a special lever equipped with a mechanical amplifier, they are pressed against the surface of the pipe. Gradually increasing the feed, separation is performed. The cut is made not so much by force as by the torque developed.

Electric pipe cutters

At large volume For this kind of work, it is advisable to use a tool with an external drive, although their price is noticeably higher. Particularly convenient (if you have a fixed network alternating current) electric pipe cutters.

Typical design Electrically driven pipe cutter for cutting ductile steel includes:

1. Impact-resistant housing equipped with ventilation slots.
2. Drive high-speed electric motor designed for voltage 220 V.
3. Three thrust rollers provide the necessary cutting accuracy.
4. A cutting cutter fixed in a tool holder on the motor shaft and protected from the thrust zone.
5. Reduction gear.

The weight of electric pipe cutters does not exceed 1.5 kg, however, many designs provide for attaching the tool to mechanic's workbench. Lubricants working area not required during cutting.
The design of electric pipe cutters for cutting more durable metal products is characterized by the absence of a gearbox, and therefore the number of revolutions cutting tool reaches 3000...4000 per minute. In such conditions, supply of lubricant to the separation zone is mandatory. The working tool is made of hard alloy grades VK5 or VK8, and the disk itself is covered with a removable casing.

The design of a hydraulic pipe cutter includes a working cylinder, a rod and a piston, and the necessary pressure is created by a compact hydraulic pump, which is included in the package. The stroke of the cutter is regulated by changing the pressure of the working fluid - water. Hydraulic pipe cutters can be used in any conditions, but they are inferior in power to electrically driven models.

Features of the most popular models of hand-held pipe cutting tools

Actively promotes its products to specialized markets in the country trademark RIGID. Pipe cutters from this company are compact in size, and at the same time, they efficiently cut pipes of both alloy and non-alloy steel. In order to reduce the cutting effort, the feed unit is equipped with rolling bearings, which reduce friction losses. The cutting rollers are returned to their original position using a spring device. The roller mount itself is unified and quick-release, which makes servicing the tool easier. All pipe cutter parts are made from of stainless steel, so pipe cutting can be carried out even in a damp environment (for example, under water). The disadvantage of RIGID pipe cutters is the design of the handle, which does not allow the development of high torque during operation.

The REED company produces chain pipe cutters that have proven themselves well when performing repair work on cast iron pipelines. REED's SUPER line uses a roller cutting tool, and is more suitable for cutting steel pipes. Cutting discs made of high-resistant tool steels, which eliminates the appearance of burrs on the interface surface. Compared to conventional pipe cutters, the tool has a more convenient shape of the power handle, but is not intended for work in conditions high humidity. Preliminary setup of the tool and its adjustment during the operation are not required.

Rothenberger produces pipe cutters disk type, which are equipped with a convenient clamp-type clamping mechanism, which can be easily adjusted to cut steel pipes of a different diameter. The roller tool is characterized by increased strength and rigidity, and therefore can efficiently cut pipes with thick walls. In terms of cut quality, pipe cutters from Rothenberger are not inferior to those discussed above, but are equipped with an expanded set of cutting rollers, and therefore are also suitable for working with copper or cast iron pipes.

Purchasing a pipe cutter for each specific job is not entirely economical. Option make your own device quite acceptable, especially if you have the skills of a mechanic and welder.

Types that you can make yourself, in order of difficulty

In domestic conditions, to obtain a high-quality cut, they are often used roller pipe cutters. The design is not very complicated and you can make them yourself. Pipes that are large in size and type of materials are processed using hand-made chain pipe cutter.

Factory assembled roller pipe cutter Pro Fit. Photo

If necessary cutting large quantity it is desirable to have pipes power driven device, made by yourself. Purchased, especially good quality from foreign companies, is not cheap. Here you can offer an angle grinder as an electric drive and develop an electric pipe cutter (circular saw) based on it. Other types of drives– hydraulic, pneumatic and others can be modified at home, let alone developed, either impossible or very difficult and only capable of particularly gifted craftsmen.

Homemade tools for cutting steel pipes and more, video

Introducing possible options making your own roller, chain and electric pipe cutters.

Roller for steel and copper pipes with a diameter of up to 40 mm

• the main element of the design is the cutting roller; it is purchased, as it is made of special steel with a certain sharpening angle;
• steel strip 5 mm thick, 30 mm wide. and approximately 500 mm long;
• enlarged (high) M12 nut;
• standard M12 nut;
• standard M16 nut;
• steel bar with a diameter of 20 mm, a length of at least 60 mm;
• M12 bolt with thread length 200 mm. over the entire length of the rod;
• Bulgarian;
• locksmith tools and accessories.

The order of work is as follows.

• First of all pipe cutter body is manufactured. It is welded from strips steel sheet 5 mm thick. and 30 mm wide, into which the workpiece was cut with a grinder.

• The body is the supporting part for all structural elements of the pipe cutter, therefore Welding seams must have good strength characteristics. Why is it necessary to clean and adjust the surfaces to be welded before welding?
• Prepare a hole for the rotation axis support rollers and cutting tools. By the way, in this video the author forgot to mention this design element. The diameter of this steel bar must correspond to the internal diameter of the cutting roller, and for unification, a hole should be made in the support rollers to the same diameter.
• At pen making, which will be used as part of the clamping device and a lever for rotating the pipe cutter, it is important to choose a convenient diameter and length for work. An M16 pin may not be useful for cutting small-diameter pipes.
• Finished pipe cutter after painting has a good presentation.

Chain for products with a diameter of up to 76 mm

The pipe cutter is positioned by the author as a device for processing pipes up to a diameter of 76 mm. The pipe material is not specified. Probably additional features will appear after testing. For making a pipe cutter you will need the following materials:

• piece of old chain from electric hoist;
• cutting rollers made of tool steel, hardened, industrially manufactured;
• M6 studs depending on the number of chain links;
• M6 nuts twice the number of studs;
• two steel strips 10 mm thick, 40 mm wide. and approximately 350 mm long;
• plates 10 mm thick, dimensions 40 x 60 mm. - 4 things. (2 pcs. - for making fastenings for the ends of the chain, 2 pcs. - for the clamping device;
• chain links that will be used as elements of the power part of the pipe cutter structure;
• M16 bolt, length selected to ensure normal conditions chain compression;
• nut M16;
• plate 2-3 mm thick, size 40 x 40 mm;
• a set of fasteners in the form of studs, nuts, M8 washers, M10 bolt, M10 nut, M10 threaded washers;
• welding machine with electrodes;
• a device for disassembling a chain, another set of metalwork tools.

For making a chain pipe cutter you need to do the following:

• Disassemble old chain O t of an electric hoist into its component parts: links and pins. A device, as the author calls it, a “crocodile,” is used to knock out fingers.
• To provide a collapsible chain at the ends of the fingers M6 studs are welded. The chain is assembled into a single unit using M6 nuts and washers.
• Levers made of steel strips equipped with fastening for the ends of the chain. 10 mm thick plates measuring 40 x 60 mm are welded to the ends of the strips. Links are welded to the plates to provide a landing gap for the ends of the chain. It should be noted that appearance welding seams leaves serious doubts about their sufficient strength during operation. Preparation of surfaces for welding (cleaning, selection of modes) leaves much to be desired.
• In one of the stripes two holes with a diameter of 10 mm are made.: one in the middle, the other at the end opposite the chain fastening;
• In another stripe except for the hole in the middle, an emphasis is being made from the remains of plates 10 mm thick. by welding;
• To the assembled plates in the form of scissors mounted stretching device , consisting of an M16 bolt, an M16 nut and a washer in the form of a plate that limits the movement of the levers.
• The ends of the chain are inserted into the gaps between the links at the ends of the strips and are secured with studs, nuts and M8 washers. The position of the cutting rollers in one cutting plane is adjusted by intermediate washers.
• The appearance of the pipe cutter is clearly unpresentable, but the use of more advanced technological techniques can significantly improve the appearance and quality of the structure. The algorithm of actions is indicated.

Electric pipe cutter, circular saw from a grinder

A device for cutting pipes based on a grinder can be made from the following materials and equipment:

• grinder used for various works in the household;
• steel sheet 4-5 mm thick;
• corners 30, 40 mm;
• square pipe 20 x 20 mm;
• tension-compression spring with ends for hooks;
• fasteners, including those that match the threads on the holes of the grinder;
• steel bar with a diameter of 10-12 mm. for the axis of rotation;
• welding machine with electrodes.

Necessary perform the following work.

• Make from 4-5 mm sheet, corners and square pipe table for placing work being processed b. Attach a device to it for clamping and turning the pipes during processing.
• To the table weld the stand, made from 30 mm angle. First make a hole in the rack with a diameter of 10-12 mm. for the axis of rotation. Weld a plate to secure one end of the spring.
• From the corner 40 mm. weld a pipe, which is aligned with the stand on the axis of rotation.
• Weld the bracket from sheet material, which will be shaped to fit the seating surface of the angle grinder. Provide holes on it for attaching this electric drive. Make holes to engage the spring.
• Weld the bracket to square pipe from a corner 40 mm. Position and secure the angle grinder on the bracket.
• It turned out enough compact device, which is easy to find storage space. If necessary, it will help in processing pipes with an even cut.

In the process of installing internal pipelines for any purpose, the plumber has to cut the pipes into pieces of a certain length.

This is done using special tool– pipe cutter.

For small amounts of work, some craftsmen make do with a hacksaw, while others make a pipe cutter with their own hands.

Pipe cutter does not belong to category universal tools– You won’t be able to cut steel and plastic pipes with one device.

There are, however, models designed for different materials, but this is rather an exception to general rule. Therefore, you should buy a device only after you have definitely decided on the choice of pipes.

In some cases, pipe cutters designed for cutting steel pipes cut more than soft materials, but the quality of the cut suffers. For example, copper pipe such a tool can be deformed.

Plastic pipes are cut with roller pipe cutters. Their productivity is low, but the cut is perfect. Propylene pipes can be cut with a cordless pipe cutter designed specifically for this material. It provides high speed operation, but the pipe size is limited to a diameter of 42 mm.

Thin plastic pipes can be cut with special scissors. They are inexpensive and easy to work with. But for large volumes, scissors are not suitable - your hands get tired quickly.

Wall thickness

Pipe cutters are designed for a specific range of pipe wall thicknesses. Depending on this parameter, they are divided into three groups:

1. Heavy Duty: Used when cutting cast iron and steel pipes 12 inches or larger in diameter. Pipe cutters of this group are equipped with reliable latched clamps.
2. For cutting workpieces from thin-walled pipes - metal-plastic, stainless, copper and brass.

Asbestos cement and ceramic sewer pipes cut using chain pipe cutters. They can cut pipes with a diameter of 50 to 150 mm. For large diameter pipes - up to 300 mm - a tool with an extended chain is used.

Design features

Structurally, pipe cutters differ according to the type of cutting unit:

• rotary or rotary;
• with ratchet mechanism;
• telescopic;
• chain;
• with ratchet mechanism;
• incisal;
• roller

The latter are most often used for cutting steel pipes. Cutting rollers there may be several - up to three. In addition, the design also includes guide rollers that hold the workpiece in the desired position. The more rollers, the larger the diameter of the pipe the pipe cutter can cut.

Roller pipe cutter

Single-roller models cope with diameters of 15-50 mm; for three-roller models this range expands to 100 mm.

A pipe cutter is a holder with one or two cutters attached to it. The movement of the working unit occurs under the influence of the threaded rod.

The action of chain pipe cutters is to gradually tighten a chain equipped with cutting rollers around the pipe.

Used for bending water supply pipes special machine which is called a pipe bender. — views and drawings of the device, as well as manufacturing instructions.

Let's consider methods for connecting metal-plastic pipes.

Operating principle

Based on their operating principle, pipe cutters are classified as follows:

• manual;
• electrical;
• with pneumatic drive;
• with hydraulic drive.

Manual pipe cutters can be classified as household tools. They are inexpensive, easy to use, so no special skills are required from the worker.

Electrical are highly effective and do not require excessive physical effort. They cost more than manual ones, so it makes sense to buy them only in case of large-scale work.

Manual pipe cutters

To extend service life electric pipe cutter and obtaining a slice High Quality use cutting fluids.

DIY pipe cutter

Let's look at how to make a pipe cutter for steel and other types of pipes with your own hands. Homemade devices for cutting pipes - not uncommon. Craftsmen make pipe cutters from scrap materials that have been lying around uselessly in garages for years. And many people adapt a grinder for this purpose (a pipe cutter made from a grinder with their own hands), resulting in a kind of cutting machine.

Aerobatics - manufacturing a plasma pipe cutter. The basis for this design are flywheels from trucks, gears from Bendix and plasma cutters. But to make this monster you need metalworking machines, so it’s difficult to build it in a garage.

Homemade cutting machine

But there are also the simplest models of home-made pipe cutters, the production of which uses materials that are abundantly available in the home workshop of a thrifty owner.

A self-made pipe cutter serves quite well for preparing pipe sections in small volumes.

Required tools and materials

To make the device you will need a general purpose tool:

• spanners;
• yews;
• hacksaw for metal;
• files and needle files;
• screwdriver;
• hammer.

The starting materials are:

• square wire rod 15x15 mm;
• M8 bolt;
• M6 screws;
• hacksaw blades;
• spring;
• steel strips 15x4 mm.

Prepare metal rivets with a diameter of 4 mm.

Sequence of work

Start your work by preparing the tools and workplace. Once you have conveniently placed everything you need, proceed to perform basic operations.

Making the left part of the pipe cutter

Cut a piece of wire rod 135 mm long. Fill the lower end of the workpiece with a radius or remove the chamfers and round them with a file.

Then, at a distance of 90 mm from the straight end of the workpiece, drill a hole for the clamping bolt. Hole diameter – 8.2-8.5 mm.

The teeth of the blades on the right and left sides of the pipe cutter should be directed in the same direction.

From the side of the rounded end, drill a hole for the axle. It can be made from a rod with a diameter of 8 mm or you can find a suitable finished part.

Making the right side

You'll have to tinker with the right side a little longer. Firstly, its base, made of wire rod, has complex shape: on the side of the working part, it is necessary to form two sections 40 mm long, making an angle of 30 degrees with the horizontal and 90-120 degrees with each other (in the projection, the picture resembles the roof of a house).

Tuck the remaining free shank under the handle.

Attach the part tightly to the bent sections, similar to the right side of the product.

In the body of the wire rod on the left side, mark the center of the threaded hole into which the clamping bolt will be screwed.

Secure a steel strip opposite the hole on the left side intended for installing the axle.

Its length should be such that the distance from the center of the axis to the nearest edge of the handle is 30 mm.

A hole for the axle is also drilled in the strip first.

Assembly

Insert a clamping bolt into the hole on the left side of the pipe cutter and put a spring on it (it should be between the left and right sides devices).

Reinstall the axle. Its ends can be riveted, only in this case you will get a permanent connection of the parts of the device.

The role of the axis can be played by a screw-nut pair. This design will allow you to disassemble the pipe cutter if necessary.

After installing the axle, screw the clamping bolt into the threaded hole located on the right side of the structure.

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