The best band saw for wood. Choosing a band saw for wood

One of the main stages of woodworking is sawing wood. Cut a board, create an accurate cut, cut a workpiece - in the home workshop they use it for all this. circular saw, but its scope is limited. It allows you to make only straight cuts and is capable of processing boards of relatively small thickness.

Wood band saws do not have such restrictions. Their design features allow you to cut large cross-section timber, cut blanks complex shape, if necessary, unravel the round timber.

Band saw: what is it

The main feature of a band saw is its working tool. This is a flexible strip of high-strength steel with sharp teeth, closed in a ring. The cutting blade is placed on two drums, one of which rotates an electric motor.

The precision of the cutting edge movement is ensured by guides. Saw blades are replaceable. Selecting canvases from different characteristics, you can get a section with the necessary parameters. There are horizontal and vertical band saws.

Criterias of choice

Modern industry offers various models band saws, differing in power, performance and size. For any workshop you can choose a device with optimal characteristics. Choosing a saw for home use, you need to pay attention to a number of its main characteristics:

• engine power;
• shape, size and pitch of teeth;
• blade width;
• the ability to quickly change the cutting blade;
• equipment manufacturer.

The power of the device is selected based on the expected volume of work, the parameters of the blade are chosen based on the available wood and the type of products that are planned to be manufactured.

Characteristics

For effective use A band saw will require several blades of varying widths and thicknesses. When choosing a tool for a particular job, it is important to consider the following:

• Only soft wood can be processed with a thin blade, otherwise it will quickly bend and the cutting line will be uneven;
• the wider the blade, the more accurate the cut will be;
• a thick saw is not suitable for working with small bars and thin sheet material, they are deformed due to heating;
• angled cuts and figure cutting can only be done with a narrow cloth.

In addition to the geometric dimensions of the blade, it is important to pay attention to the profile and height of the tooth. An important criterion for a band saw blade is the number of teeth per unit length.

Note! The more frequently the teeth are spaced, the smoother the sides of the cut.

A saw with a fine tooth has a longer service life due to less pressure on each tooth. A saw with a wide tooth is preferable for hardwood due to the greater pressure on the cutting edge.

The quality of the cut is also affected by the height of the tooth. The large tooth is great for rough work and cutting thick wood. Small bars and thin sheet material can only be cut efficiently using a fine-toothed tape.

Another important parameter is the tooth pitch. There is a rhythmic step and a variable step. The saw with rhythmic steps is suitable for fine work, this tool is convenient for cutting thin slats and sawing out parts from plywood. A variable pitch blade should be chosen for processing large pieces of soft wood. Thanks to the asymmetrical arrangement of the teeth, this blade will not clog and will easily cut thick boards.

Manufacturers

Particular attention should be paid to the equipment manufacturer. A band saw, like any machine used in woodworking, must be distinguished by quality and reliability; you should not chase temporary benefits; it is better to buy it right away good device. There are not so many manufacturers with a name.

1. Arntz (Germany). One of the world leaders in the production of woodworking equipment. The saws from this manufacturer are different high quality, but belong to devices of the highest price segment.
2. Lenox (USA). Popular American company, producing quality machines. Distinctive feature products - branded coating cutting edges, guaranteeing durability and low operating costs.
3. Wikus (Germany). Excellent German quality plus a wide range. In the product catalog, everyone will choose a machine that fully meets their wishes.
4. Forezienne (France). The company offers a wide range of saws and other woodworking equipment. The cutting tools of this manufacturer are characterized by excellent quality and high reliability.
5. Lennartz (Germany). The company specializes in the manufacture of band saws for various purposes, offering both small household machines and equipment for sawmills.
6. Doall (USA). A small company that has managed to establish itself well in the woodworking equipment market. Offers a wide range of saws, spare parts and accessories for them.

Chinese manufacturers offer a wide range of band saws. These devices are distinguished by their low price, but cannot always boast of high quality.

How to make a band loom

Like many other machines, you don't have to buy a saw. Having the skills to work with the material and the desire, you can safely start making band press on wood. Made with high quality, its characteristics can be compared with factory equipment, and in some ways even surpass it.

First of all, you should decide on the layout of the main components and assemblies; for this you can find a drawing or make your own unique project. When creating your own saw, it is important to take into account the parameters of the tape that you will have to buy in the store. You definitely won’t be able to make it yourself.

Homemade machine bed

The basis of any machine (band saw is no exception) is the bed. This is a frame on which components and assemblies are attached; it assembles the components into a single device.

The best material for the bed of a vertical wood band saw is steel. A massive square will do, or you can use a profile thick-walled square pipe. Welding is used to assemble parts.

Stanin homemade machine can also be made from wood. It’s worth mentioning right away that you shouldn’t use sheet materials (chipboard, plywood, etc.) for the frame. The racks can be made from timber with a cross-section of 80 x 80 mm, or a box-shaped structure can be made from boards with a thickness of 20 mm or more. Wooden frame glue at the junction points and use for reinforcement metal corners on screws.

No matter what material is used to make the frame, it must be stable, durable, and flexible. It must compensate for vibrations caused by the rotation of the pulleys and the movement of the cutting blade.

Pulleys and supports for them

The most important component of a band saw is the pulleys. Rotation from the electric motor is transmitted to the lower one. The best way for this purpose, providing the ability to change speed and safety, – V-belt drive. The upper pulley is driven. In addition to supporting the cutting tool, it provides tension.

Multilayer plywood is suitable for making pulleys for a homemade machine. Several identical blanks are cut out of it (the total thickness of the package must be at least 30 mm). A hole for the bearing is made in the center of each workpiece.

Note! The blanks are glued together, adhering to the principle of gluing plywood - the direction of the fibers of adjacent sheets should be mutually perpendicular.

After gluing, the package is further processed to obtain smooth surface. The pulley itself can be lightened by cutting several symmetrical round windows in it.

The bearing is installed in a metal flange, which is secured with bolts. The axis of the bearing assembly must be exactly perpendicular to the plane of the disk, otherwise the pulley will become loose, which can cause serious damage.

To prevent the canvas from slipping, work surface The discs are processed to a barrel-shaped profile and covered with thin rubber (an old bicycle tube will do).

Tabletop

The material for the countertop can be multilayer plywood covered with textolite or other durable plastic. If possible, you can use a metal sheet. In any case, its surface must be resistant to the appearance of burrs and ensure good sliding of the workpiece.

Be sure to make a side support on the tabletop. It must be removable and securely fixed in any position. This will greatly facilitate the processing of workpieces of the same type and ensure cutting accuracy. As a stop, you can use a square of a suitable size or make simple design from several videos.

Guides

The operation of a band saw is based on the fact that, rotating on disks, the blade carries out forward movement, biting the teeth into the workpiece. Due to the large length and complex geometry, the blade will rattle during movement. To ensure an accurate cut, it is necessary to keep the vibration of the belt to a minimum. For this purpose, the machine is supplemented with guides.

The simplest guides that can be made at home are two bearings, with a tape placed in between them. The bearings are bolted to the frame. To maintain the ability to use the tape different thicknesses, the distance between them must be adjusted.

Exterior finishing

When making a machine for the home, we must not forget about the safety of its operation and aesthetics. appearance. After installing the upper pulley, it must be covered with a casing. This will complete the entire design and ensure the safety of the operator in case the saw comes off the pulley.

If the frame is made of wood, the easiest way to cover the pulley is with plywood. When metal structure you can use the same plywood or galvanized metal sheets. In any case, one side panel must be removed to replace the tape. At the end of the work, the casing, like the frame, is painted or varnished.

On-off buttons must be installed on the front panel next to the operator. The buttons should be easy to operate and not be pressed into the body. The wires suitable for the engine are placed in a box or corrugated tube.

To make working more convenient, a lamp is installed on the machine. It is better if it is on a movable mount. A box for collecting sawdust under the lower pulley will help to significantly simplify cleaning. This is not difficult, you just need to screw on an inclined bar along which the sawdust will be poured into the container located below.

After the sawing machine is completely installed, it is tested. First of all, you need to visually verify the alignment of the pulleys. In case of the slightest deviations, the pulleys are aligned; for this purpose, washers made of textolite or fluoroplastic are put on the shafts. Next, a test cut is made. It is performed without guides, the work proceeds without pressure. If the device is working normally, you can install the guides and feel free to get to work.

How and which one to choose - Band saw for the job.

When choosing equipment for a carpentry or furniture plant, among existing saws, preference is given to the band type. This is due to high performance characteristics and a low percentage of waste resulting from wood processing. However, with a wide range of products, it is difficult to make a useful and high-quality purchase. In this article you can learn useful information, which defines the criteria for selecting a band saw.

Classification

Saws on the market belt type divided into 3 classes, differing primarily technical characteristics.

• Household - compact units of desktop type installation with the possibility of using blades up to 60 mm, fixed with screws on a stand or workbench. For connection, a regular 220V electrical network is used. The power is limited to 350 W, but this is quite enough for sawing workpieces and further processing them to assemble small pieces of furniture. Productivity – up to 5 cubic meters. m. Disadvantages: unsuitable for working with hard wood and frozen material.
• Semi-professional units are installed in small workshops due to their high productivity (up to 10 m3) and power (up to 1500 W). The saws are installed directly on the floor and connected to a 220V network. The thickness of the sheets used has a wider range, unlike household class(up to 100 mm).
• Professional equipment is installed mainly in large enterprises. Their power exceeds 1500 W, and a 380V network is required for connection. Productivity per shift – up to 15 cubic meters. m., the range of used canvases has been expanded to 300 mm. Hard wood and frozen material are easy to process.

Advantages

Band saws have the following advantages:

• cut parts do not require additional processing(trimming, trimming), which saves time and money;
• low percentage of waste;
• high productivity, exceeding other types of equipment by 30%;
• the unit has reliable device, ensuring the durability of the machine ( asynchronous motor, driving the belt drive);
• the equipment is suitable for performing shaped cuts;
• high degree of security.

Popular models

Bison model ZPL-350-190

The equipment is designed for processing workpieces whose thickness does not exceed 8 cm. The compact dimensions of the unit are ideal for a home workshop. The motor power is 350 W, the belt speed is 147 m/min.

Advantages of the saw:

Ability to change the angle of the table (up to 45°);

Adjustable supports allowing you to accurately adhere to the specified size;

Connecting a vacuum cleaner;

Overload resistance.

Diold model PL-0.6

The semi-professional machine is designed for sawing soft wood and plywood. The power is 750 W, the working blade parameters are 2234x12.5x0.5 mm. The table is adjustable, which makes it possible to make not only straight cuts, but also curly ones.

Advantages of the unit:

2 speeds (6.3 m/s and 13.2 m/s);

Operating temperature range from +35° to -15°;

The maximum parameters of the workpiece are width 305 mm, height 130 mm.

Makita model LB1200F

A universal unit that can be used to work with different types of materials, including wood and metal. The equipment power is 900 W, the belt speed is 1000 rpm. Thanks to the presence of 3 blades, work of any complexity is performed.

Advantages of the saw:

Mobile stand;

LED lights;

Possibility of connecting a vacuum cleaner;

Changing the angle of the table;

Availability of waste container.

Metabo model BAS 318 Precision DNB

Two-speed equipment is designed for intensive production use. Power – 900 W, connection to the network 380 W. Regardless of the load, the saw operates smoothly without jerking. The engine is reliable and does not require frequent maintenance.

Advantages of the unit:

The tape tension indicator allows you to control the degree of web tension;

Adjustable table that changes the angle of inclination;

Automation ensuring safe operation;

Table extenders allowing processing of long workpieces;

The stand is equipped with wheels, which makes it possible to change the installation location in the workshop.

• When choosing a band saw, the depth and width of the cut are taken into account. These indicators determine the parameters of the workpieces that can be obtained during operation of the machine.

• The power of the unit not only reflects its class, but also expands its functionality. When familiarizing yourself with the technical characteristics, it is worth paying attention to additional equipment, for example, the presence of a millimeter scale and stops, thanks to which you can process workpieces more accurately. Several speeds on the machine allow you to cut material of different hardness.

• It is preferable that the band saw be equipped with a backlight. This eliminates the expense of money and time on installing additional lighting in the room.

• By doing figured cuts Good maneuverability is required. It will be provided by tilting and turning the table.

Purchase band saws needed in specialized stores or from official representatives. A respectable seller always provides a certificate, which is the main guarantor of quality. A fake gives itself away as an uneven cut, which is explained by poor sharpening of the cutting part.

The low quality of sawn boards will certainly disappoint home handyman. But in business, such boards will result in a whole bunch of problems. This includes loss of money, breaking contracts with consumers, and returning goods. To prevent such problems from becoming your personal ones, you just need to know the answer to the question of how to choose good quality.
A band saw is a metal strip closed in a circle with teeth on one side, mounted on pulleys. Equipped with a massive frame. A band saw for wood has a vertical saw blade. The saw blade is tensioned between the upper and lower pulleys.Band saws for wood are used for straight, curved and oblique cuts. Characteristic vertical saw - high speed of blade movement due to rotation of pulleys. This allows for high-quality sawing soft materials. This refers to wood of all species, plastic, plywood, particle boards.
Buy band saw woodworking is the primary task of any sawyer. And one who is engaged in small repairs and construction, and one whose business is established and the production volume is already quite large.
A high-quality band saw should produce a smooth and even board. No “waves”, “dives” or curvature. Ideally, it will cut for a long time and efficiently. The whole thing will pass life cycle without breakages or tears. This type of saw rarely needs to be sharpened. If the need for sharpening arises, this process should be easy and simple, using an automatic device.
We will tell you how to choose a wood band saw so that it meets the above criteria.

BENEFITS OF BAND SAW

Why is a band saw better than a jigsaw? Circular Saw or chain Saw?

• The design of a wood band saw is such that all the motor power is spent on sawing. There is no resistance or friction. Therefore, its productivity is 30% higher than that of other cutting equipment.
• The saw blade is durable. It is less likely to dull and break than a chain or disk.
• Trimming and trimming after using a band saw on wood are not necessary. This saves time and money.
• Band saw machines are equipped with asynchronous motors. They drive the belt drive. This is an established and most reliable design.
• Band saw for wood better than a jigsaw. It is not capable of wobbling or deviating from the cutting line.
• The wood band saw is one of the most safe tools. The workpiece does not need to be held with your hands. It is enough to direct it along the stop. While the chain saw may fall off, the band saw is secured very securely.

The advantages of a wood band saw are clear. Now let's look at what criteria are important when choosing a band saw.

POWER

Powerband saw determines the class of equipment: household, semi-professional and professional. The higher the power, the better the performance. But it should be noted that a high-power engine consumes a lot of electricity.
In order not to be mistaken with power, determine the volume of planned work. Based on them, you can choose a band saw from the following classes:
Small-sized band saws - for household use. Power from 350 W to 1 kW. They operate from a regular 220V network. They are often desktop (portable). Can be screwed onto a table or workbench. Low noise. These saws are used to cut workpieces or make furniture with your own hands. The low-power band saw is compact and economical. But it will not cut hard wood (oak, hornbeam, walnut).
Semi-professionalBand saws are designed for small businesses and workshops. Designed for long-term use. They are larger in size and can withstand high loads. Saw hard rocks. Process large workpieces. Their power ranges from 1 kW to 3 kW. Performance is the most optimal. The maximum reaches 10 m3 per shift. This version of the saw can also be used at home.
Professionalband saw machines are installed on industrial enterprises. Basically they require three phase electrical network 380W. Can cut thick and long beams. They can handle wood of any hardness, even frozen logs.

CUTTING PARAMETERS

In band saws important indicator is the depth of cut. It shows how thick the part will be cut by the tool. This parameter for different band saws can be from 8 to 50 cm. It depends directly on the engine power. It is clear that household saws do not cut as deeply as professional ones.
There is also a cut width parameter. Its value affects the maximum permissible width of the board for cutting. Band saws for private use have a cutting width from 190 to 300-400 mm. Professional bandsaw machines can cut half-meter boards and even workpieces 610 mm wide.

Saw blade: material, dimensions and teeth
The key point in choosing a band saw is correct selection saw blade.

• Material . The best blade for band saws is carbon steel. It undergoes heat treatment and becomes very hard and durable. In this regard, it is worth paying attention to American band saws. They are considered the best in production.
• Lenght and width . The cutting parameters depend on them. The longer and wider, the larger the workpieces can be sawed. And the higher the speed of work. But for home work, especially for curved and bevel cuts, it is better to choose medium length parameters.
• saw teeth . Their quality and sharpening must be perfect. After all, they affect the smoothness of the cut. The more teeth a band saw has, the smoother the cut will be. Important nuance when choosing - tooth pitch. For a band saw to work well, the number of teeth must be a multiple of three. The teeth are set alternately: right, left, straight. The best option 210 teeth with ¾” pitch or 180 teeth with 7/8 pitch are considered.

If the band saw has teeth that are not multiples of 3, then defects may occur during the cut.

SAW BLADE SPEED

Wood band saws may have a gearbox installed. Choice of speeds - better than a single speed band saw. Several speeds allow you to make high-quality cuts in wood of different hardnesses. How softer wood, the higher the cutting speed is set. This function is mainly installed on semi-professional and professional band saws.

ADDITIONAL FUNCTIONS

To increase comfort when working with a band saw, many manufacturers install additional options. Their presence slightly increases the price of the instrument. But in return you get convenience and comfort. Various additional functions are a priority when choosing which band saw is best. These include:

• Quick tension function. Saves time and effort. Does not require additional tools.
• Availability of millimeter scale. Increases cutting accuracy.
• Number of stops. Several stops make it possible to process workpieces much more accurately.
• Tilt and rotation of the table. Very important for bevel (45 degrees) and curved cuts.
• Backlight working area. Comfortable. No need to install additional lighting.

The most convenient way to choose and purchase a band saw for wood is in our online store Bargain. Here you can read all the characteristics, customer reviews about band saws different manufacturers. Our specialists will give good advice by choosing a wood band saw. And, as you know, there is never too much information. It is needed to select a band saw with optimal parameters and functions.

The operating principle of band saws was mastered back in the nineteenth century and continues to be relevant today. Certainly, modern models In terms of design, such units have little in common with the first versions, but the basic technological features remain the same. These include a ring-shaped saw that can be used to make straight and curved cuts. Band saws are used in various areas, but the main ones are woodworking factories and furniture factories. The device performs rough processing and produces high-precision cuts in carpentry with the same quality.

Machine design

Much in woodworking depends on the parameters of the machine itself, so its design should be considered as carefully as the individual components. The unit consists of a C-shaped frame, upper and lower pulleys, guide elements, a saw and a working platform, an electric motor, and guard flaps. Also, special brake mechanisms are used to instantly stop sawing, and a locking device is provided to hold the tape in case it breaks. To allow the user to adjust the width of the cut, a guide ruler is used.

When choosing, you should also take into account the location of the idle part relative to the direction of the workpieces - it can be left- or right-handed. The design of the frame also differs. There are welded and cast bases. However, this criterion is more significant in relation to models intended for metal processing.

Vertical or horizontal?

This classification comes from the type of location of the band saw - accordingly, it can be vertical and horizontal. There are also modifications with an inclined saw, but these are rare examples for specific or complex operations. In large models with a vertical saw, movement is allowed only for the console with the working element. A small-sized vertical band saw machine has a different operating principle - only the saw frame is fixed in it, and the workpiece can move. Such models can be used for different types works - both for the piece production of wood structures and for the production of furniture.

Horizontal representatives of band saw units are considered the most powerful. Some representatives of this category are capable of sawing frozen wood and hardwood. It is noteworthy that the horizontal band saw machine in Soviet times was intended exclusively for processing wood, although its design features are more suitable for metal.

Automatic machines

Manual versions of band saws were once popular, but modern drives have practically replaced them, so the only question is choosing the degree of automation. Automatic wood band saws are more often used in enterprises that mass-produce wood products. In such mechanisms, feeding is carried out automatically - using a motor and a feed vice. If the sawn-off element exceeds the travel parameters in length, its transmission will be carried out in two approaches with interception. The choice of full automation, as a rule, justifies itself if mass processing of short-length workpieces is planned.

Semi-automatic models

Versions with semi-automatic control are more often used in procurement. Among the advantages that a semi-automatic band saw machine has is the ability to manipulate the saw frame and vice in the same auto mode. During operation, double pressure is applied to the workpiece (from the frame and the hydraulic cylinder), which allows sawing hard workpieces without external force.

Saw characteristics

The main element of the machine, on which almost all quality parameters of the finished product depend. The machine itself has a greater influence on functionality and ease of use. The width of the band saw blade can be from 2.5 to 5 cm, and the thickness varies from 0.9 to 1.1 mm. In some modifications, the band saw machine provides for combination with other characteristics of the saw, but for standard operations it is better to focus on one of the listed sizes. Regarding the material, it is recommended to choose models from which, however, they are considered the most common. In addition, when choosing a band saw, it is important to take into account the type of manufacture, which will ultimately determine the hardness. In particular, there are canvases with uniform hardening, with a flexible and hardened back.

Feed and cutting speed

This indicator is not always decisive, but if the machine is selected for production tasks, it's worth paying attention to. The speed at which the cut is performed determines the efficiency of the units if it is not coordinated with the feed rate and inter-tooth spacing of the saw. Typically, a band saw will operate at speeds of 700-900 meters per minute, which corresponds to most blades that have a typical inter-tooth distance. Changing the feed speed is usually aimed at increasing sawing efficiency.

Operating rules

When performing cutting operations, it is always important to keep safety in mind, but do not forget that the main goal is to obtain a smooth and accurate cut. First, it is necessary to fix the wood workpiece to minimize the vibration of the working blade. This will affect not only the convenience of work, but will also increase the productivity of the entire process.

Straight-line cutting is carried out along a guide line or using a movable stop, and if curved cutting is performed - in accordance with the applied markings or using special mechanisms for fixing and feeding the workpiece. In automatic mode, straight cutting with a band saw is made easier thanks to the removable feeder. This automatic feeder is designed to resemble a bracket with complementary rollers. By manipulating this device, you can easily control the process, but if you plan to create a figured cut, then the automatic feed mechanism is removed. Obviously, serial production in this format of work is impossible or requires other auxiliary mechanisms.

Manufacturers

The band saw market has one feature, which is its pronounced segmentation by manufacturers, each of which occupies its own sector. In other words, there is no serious competition between models with similar characteristics. For example, the entry level is represented Russian enterprise"Zubr", which produces quite high-quality machines with basic capabilities and costing 20-30 thousand rubles. Oddly enough, the Japanese brand Makita is in this class and is generally represented quite modestly - mainly budget versions of average performance.

Those who are planning to acquire a truly effective and multifunctional device should immediately turn to Metabo products. The assortment of this brand includes units with a power of up to 1,900 W and a maximum cutting depth of 28 cm. The leader of the segment rightfully includes the Jet band saw machine, which is suitable for both small carpentry and large-scale factories. The most powerful machines are capable of delivering up to 5,500 W, and their cutting depth reaches 45.5 cm.

Conclusion

Equipment for performing complex wood processing operations is not cheap, but it allows you to cope with the work as safely and efficiently as possible. Band saws in this regard are optimal solution, since they combine several important parameters: reliability, mobility, ease of operation and the ability to replace critical mechanisms.

It is impossible to predict in advance how effective a particular band saw will be in certain conditions work. Nevertheless detailed analysis characteristics, including cutting depth, speed, saw parameters, configuration of feeding elements, will allow you to get as close as possible to the right decision. The rest depends on the quality of operation of the equipment. It requires regular cleaning, checking all fasteners and clamps, as well as preventive treatment of external functional elements.

Choosing electric saw, the question may arise, which band saw to choose? How to choose a band saw blade?

But don’t be afraid, everything is not as complicated as it might seem at first glance. In our article we will help you figure it all out.

The first thing you need to do is decide for what purpose you are buying a saw. As a rule, it is needed for craftsmen working with. But, there are also band saws for metal. This is also worth paying attention to.

Band-saw is a cutting tool used for band sawing machines. By its design, a band saw has the appearance of a flexible steel band, tightly looped, with a row of teeth along one edge.

The band is mounted on two pulleys, which are rotated by the electric motor of the band saw.

Using a band saw, you can make both straight and shaped cuts. That is why the scope of its use is very diverse and is not limited only to furniture production.

Types of band saws

Band saws can be divided into the following kinds:

• toothed;
• toothless;
• electric spark principle of operation.

Toothless Band Saws And electric spark saws The actions work similarly to circular saws. The only difference is the purpose of the teeth.

When choosing a band saw for metal, you need to pay attention to the design features of the band saw machine.

The main purpose of a metal band saw – this is the execution of angular, straight and figured cuts. If you need to make cuts at an angle, you will need to purchase special rotary jaws for this machine.

Characteristics and properties of the band saw

The main properties and characteristics of the saw are:

• height and width of cut;
• type of cutting blade;
• electric motor power;
• total weight of the machine and diameter of the pulleys.

• up to 300mm – light;
• from 420 to 500 mm – medium;
• with a pulley diameter above 500 mm - heavy.

Lightweight band saws are equipped with an electric motor up to 2 kW, medium and heavy electric motor up to 4 kW.

Blade Types

For cutting with a saw, special requirements are placed on the strip blade.

For cutting metals, bimetallic blades consisting of two metals are used. The main part of which consists of a metal strip made of special spring steel, and the working part consists of tool steel with sharpened teeth.

Carbon steel blades are widely used. In its own way heat treatment tape fabrics can be divided into the following types:

• with the same hardness across the entire width;
• with flexible blade and hard teeth;
• tempered blades over the entire width.

Blades with the same hardness across the entire width work well on medium-diameter pulleys. The Rockwell hardness of the sheets is 47 units.

Saws with a flexible blade and hard teeth have a specific structure. Only the upper half of the tooth will be hardened, leaving saw blade flexible. The Rockwell hardness of the saw body is 31 units, the hardness of the teeth is 64 units.

Saws with a hardened blade over the entire width are the most popular. Their Rockwell hardness is 52 units, and their tooth hardness is 67 units.

Due to the high hardness of the teeth, the resistance to dulling is significantly increased, and increased rigidity allows you to make cuts at high speeds.

Sharpening band saws for wood

When cutting wood or metal, the teeth of a band saw may lose their original sharpness. This is why you need to sharpen your electric band saw.

Sharpening the saw blade is as follows::

• initial sharpening;
• cleaning;
• wiring;
• final sharpening.

To restore the cutting qualities of the saw blade teeth, use special sharpening machines.

As a result initial sharpening you will eliminate all cracks in the teeth’s sinuses, and also restore the profile teeth maintaining a certain symmetry to the rest.

When cleaning All metal filings remaining after sharpening are removed.

When wiring change angles.

During final sharpening correct symmetrical distortions of angles and sharpen the working edges of the teeth.

Sharpening saws with your own hands will require you to have certain skills and abilities. Therefore, if you are not sure of the quality of your work, leave this matter to the specialists.

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