Choosing a circular saw blade
Recommendations for choosing a disk
When choosing a blade, it is necessary to take into account the technical parameters of the circular saw:
- engine power;
- maximum number of revolutions;
- fitting size on the motor shaft;
- inner diameter of the guard.
Engine power affects the type of disc. negative angle, a large number of teeth create a large load on the engine, which will have to work in “peak” mode.
The number of revolutions or spindle rotation speed is interrelated with certain dimensions of the disc, which the manufacturer recommends to use. Installation of a cutting tool with deviations from the recommended ones can lead to abnormal operation, as a result of which damage to the blade, saw and damage to the processed material is possible.
The seating dimensions of the blade (inner diameter) and the corresponding one on the motor shaft must match, otherwise the tool cannot be installed on the saw.
The outer size of the blade cannot exceed the inner size of the casing. if this parameter is violated, the tool will not be installed on the saw.
A number of factors affect the type of disc:
- type of work carried out, processed material;
- device, design of the cutting tool;
- number of teeth, their design.
Work performed and material to be processed. Since the discs are produced differently, it is necessary to decide on the types of operations (what types of cuts will be carried out), and also take into account what the cutting tool will handle.
Depending on the type of operations and material, the type of disc is selected: monolithic or with carbide taps.
The processing mode and type of material determine the number of teeth, their type and inclination. Most popular medium number of positive trapezoidal teeth.
Number of teeth
By the number of cutting segments, saw blades for wood can be conditionally divided into three categories:
- 10-40 pcs. small amount.
- 40-80 pcs. average amount.
- 80-90 pcs. a large number of.
This parameter is selected taking into account the nature of the work performed. So, for cross-cutting wood, it is better to purchase cutters with the maximum number of teeth. Longitudinal cuts will be better if done with a blade with a medium number of cutting segments.
Blade thickness
First of all, the thickness of the disc forms the width of the cut, and the parameter of 3.2 mm is considered standard here. For dense materials, craftsmen purchase standard or thicker circles. The thin wood saw blade is suitable for cutting delicate wood. Samples with a thickness of 3.2 mm or higher are recommended for aluminum products and laminated material. By the way, thin specimens leave less waste, but they are less hardy and wear out faster, so they have to be replaced more often. Thick cutters have a long life but are not cut as cleanly.
Circular disc working principle
All electrical wood processing machines work on the same principle. The circular disc for wood is fixed on the axis of the motor, which gives it a powerful rotation. The tool is divided into several groups:
These systems differ only in their design. Rotation of the disc in a hand-held apparatus is carried out mechanically. Electrical devices require an electric motor. To adjust the cutting depth, as well as adjust the desired angle of inclination, all systems have a special platform.
The industry produces original mini-saws equipped with a battery. Such a cutting machine for wood, the disk mechanism of which is not very powerful, can be operated in areas where there is no electricity supply.
Types of circular saw blades
Monolithic disk. They are made of high-quality high-carbon or high-speed steel. They are used for processing wood and wood products, as well as for cutting polymer products. They have a number of advantages:
- inexpensive;
- simple sharpening of teeth. you can perform this operation yourself, without the presence of complex special devices;
- are re-sharpened many times, therefore, have a sufficiently large resource of work.
Disc with carbide-reinforced teeth. The blade is made of durable tool steel. Brazing are steel alloys with high tungsten or cobalt carbides. Thanks to this solution, these discs have become the most common. They have a number of advantages:
- allow cutting most of the known materials;
- no need to set teeth;
- durable and reliable in the process;
- the service life from sharpening to sharpening is several times higher compared to a monolithic disc;
- give a cleaner cut;
- increase cutting speed;
- are produced in a wide range to solve all kinds of problems when sawing materials.
At the same time, there is a significant drawback. such discs are relatively expensive and special equipment is required for sharpening.
Disc thickness
Defines the actual kerf.
The standard size is 3.2 mm. In addition, the thickness of the disc affects the strength of the cutting tool itself. Decreasing the parameter leads to heavy operating conditions, disk overheating and breakdown. A larger size causes an increased consumption of the processed material, that is, “transfer to shavings”.
Circular saws are used in the processing of various materials. Accordingly, the cutting tool is made for specific tasks.
Additional saw functions
In modern devices, disks are capable of performing a number of additional operations. The cut is neat and clean. These useful features include:
- Dive anywhere. In other words, sawing can start not only from the end, but also from the middle of the workpiece.
- You can connect a vacuum cleaner, no matter which model. It blows away sawdust and makes the work piece much better visible.
- Launch lock. In order for the engine to start, two buttons must be pressed simultaneously. A sudden start of the motor is completely excluded. It is much safer to work with such a device.
- Special laser pointer. The device replaces the guide rail.
- Hinged protection covering the plane of the circle.
Number of teeth on a disc
Affects parameters such as cutting speed and cleanliness. With a decrease in the number of teeth, the processing speed increases, the conditions for chip evacuation are improved, but the cleanliness of the cut deteriorates. With an increase in the number of teeth, the cut is cleaner, but the load on the engine increases. Conventionally, according to the quantitative ratio, the disks can be divided into three groups:
- a large number of incisors is in the range of 80-90 pieces;
- average quantity (40-80 pcs.);
- small amount (10-40 teeth).
Discs with an average number of incisors are referred to as the universal type. They can process soft and hard wood, perform cross and longitudinal cuts, use for processing various wood products.
Recommendations for choosing a disk
When choosing a blade, it is necessary to take into account the technical parameters of the circular saw:
- engine power;
- maximum number of revolutions;
- fitting size on the motor shaft;
- inner diameter of the guard.
Engine power affects the type of disc. negative angle, a large number of teeth create a large load on the engine, which will have to work in “peak” mode.
The number of revolutions or speed of rotation of the spindle is interrelated with certain dimensions of the disc, which the manufacturer recommends to use. Installation of a cutting tool with deviations from the recommended ones can lead to abnormal operation, as a result of which damage to the blade, saw and damage to the processed material is possible.
The seating dimensions of the blade (inner diameter) and the corresponding one on the motor shaft must match, otherwise the tool cannot be installed on the saw.
The outer size of the blade cannot exceed the inner size of the casing. if this parameter is violated, the tool will not be installed on the saw.
The disc type is influenced by a number of factors:
- type of work carried out, processed material;
- device, design of the cutting tool;
- number of teeth, their design.
Work performed and material to be processed. Since the discs are produced differently, it is necessary to decide on the types of operations (what types of cuts will be carried out), and also take into account what the cutting tool will handle.
Depending on the type of operations and material, the type of disc is selected: monolithic or with carbide taps.
The processing mode and type of material determine the number of teeth, their type and inclination. Most popular medium number of positive trapezoidal teeth.
The main parameters of the circular saw blade
Types of circular saw blades
Monolithic disk. They are made of high-quality high-carbon or high-speed steel. They are used for processing wood and wood products, as well as for cutting polymer products. They have a number of advantages:
How to Choose the Right Circular Saw Blade
- inexpensive;
- simple sharpening of teeth. you can perform this operation yourself, without the presence of complex special devices;
- are re-sharpened many times, therefore, have a sufficiently large resource of work.
Disc with carbide-reinforced teeth. The blade is made of durable tool steel. Brazing are steel alloys with high tungsten or cobalt carbides. Thanks to this solution, these discs have become the most common. They have a number of advantages:
- allow cutting most of the known materials;
- no need to set teeth;
- durable and reliable in the process;
- the service life from sharpening to sharpening is several times higher compared to a monolithic disc;
- give a cleaner cut;
- increase cutting speed;
- are produced in a wide range to solve all kinds of problems when sawing materials.
At the same time, there is a significant drawback. such discs are relatively expensive and special equipment is required for sharpening.
Inner bore diameter
It has several sizes: 16, 20, 22, 30, 32. An important parameter is that the diameter must correspond to the size of the power shaft on the saw, for which the blade is selected. On some models of discs there are additional holes that fix the disc on the pins.
Tooth configuration
Each type of cutter is designed and manufactured to solve a specific task. Subdivided:
- Flat cutter. used for fast rip sawing of soft or hard wood, marked FT.
- Replaceable cutter. has a successively alternating replaceable inclination of the teeth to one side or the other. The cutters give an even and fairly clean cut. It is used for transverse and longitudinal cuts of wood, processing of plywood, OSB, chipboard and composite boards, indicated by the ATB symbol.
- A combined cutter is a sequential change of groups from a combination of four replaceable cutters (ATB) and one flat cutter (FT). Combi. This type of disc is referred to as universal due to the ability to perform different types of cuts.
- Trapezoidal flat cutter. made of successive flat teeth. The higher one is sharpened under the trapezoid, the lower one is flat. It is used for processing wood and wood products, for polymeric materials and soft non-ferrous metals. Has the designation TCG.
- Replacement tool with increased slant side. Designed for cutting material prone to splitting as well as for fine cross cuts. Denoted by HiATB.
Tooth slope
Determined by the deviation from the radius of the disc of the surface of the cutting edge. With a deviation to the back of the tooth, the slope is called negative, with the reverse side of the slope. positive. For longitudinal sawing, it is more expedient to use a tooth with a positive inclination, since in the process of processing a kind of material capture occurs, the disc hits the part, which contributes to a faster cut of the workpiece as a whole. Tooth inclination is subdivided:
- standard tilt. the angle changes from 5 ° to 15 °;
- positive, aggressive slope is 15-20 °;
- normal, negative angle ranges from 0 ° to 5 °.
Disc thickness
Defines the actual kerf.
The standard size is 3.2 mm. In addition, the thickness of the disc affects the strength of the cutting tool itself. Decreasing the parameter leads to heavy operating conditions, disk overheating and breakdown. A larger size causes an increased consumption of the processed material, that is, “transfer to shavings”.
Circular saws are used in the processing of various materials. Accordingly, the cutting tool is made for specific tasks.
Circular saw blade: choosing the right one
The circular saw blade is a tool for cutting various materials. It is an integral part, without which it is impossible to carry out any workpiece processing operations. Saw blades are used in stationary machines and hand-held cutting tools.
Saw blades for rip sawing. Series 290
Variable bevel teeth, low number of teeth and 20 ° ramps make these saw blades ideal for rip sawing glued joints in hard and soft wood and good for cross / rip plywood.
Ideal for automatic or manual feeding at low speed. Provided with mounting holes for most instruments. Used for hand-held circular, cordless and miter saws.
| Article 290.150.12H | Outer diameter, mm 150 | Landing diameter, mm 20 | Cutting width, mm 2.4 | Blade thickness, mm 1.4 | Number of teeth 12 | α, ° 20 | β, ° 10 | 1 318 rbl. | In garbage |
| Article 290.160.12E | Outer diameter, mm 160 | Landing diameter, mm 16 | Cutting width, mm 2.6 | Blade thickness, mm 1.6 | Number of teeth 12 | α, ° 20 | β, ° 10 | 1 279 rbl. | In garbage |
| Article 290.160.12H | Outer diameter, mm 160 | Landing diameter, mm 20 | Cutting width, mm 2.6 | Blade thickness, mm 1.6 | Number of teeth 12 | α, ° 20 | β, ° 10 | 924 rbl. | In garbage |
| Article 290.180.12M | Outer diameter, mm 180 | Landing diameter, mm 30 | Cutting width, mm 2.6 | Blade thickness, mm 1.6 | Number of teeth 12 | α, ° 20 | β, ° 10 | 1 345 rbl. | In garbage |
| Article 290.190.12E | Outer diameter, mm 190 | Landing diameter, mm 16 | Cutting width, mm 2.6 | Blade thickness, mm 1.6 | Number of teeth 12 | α, ° 20 | β, ° 10 | 1 439 rbl. | In garbage |
| Article 290.190.12H | Outside diameter, mm 190 | Landing diameter, mm 20 | Cutting width, mm 2.6 | Blade thickness, mm 1.6 | Number of teeth 12 | α, ° 20 | β, ° 10 | 1 439 rbl. | In garbage |
| Article 290.190.12M | Outside diameter, mm 190 | Landing diameter, mm 30 | Cutting width, mm 2.6 | Blade thickness, mm 1.6 | Number of teeth 12 | α, ° 20 | β, ° 10 | 1 492 rub. | In garbage |
| Article 290.200.24M | Outer diameter, mm 200 | Landing diameter, mm 30 | Cutting width, mm 2.8 | Blade thickness, mm 1.8 | Number of teeth 24 | α, ° 20 | β, ° 10 | 1 986 rub. | In garbage |
| Article 290.210.24M | Outer diameter, mm 210 | Landing diameter, mm 30 | Cutting width, mm 2.8 | Blade thickness, mm 1.8 | Number of teeth 24 | α, ° 20 | β, ° 10 | 1 419 rub. | In garbage |
| Article 290.216.24M | Outer diameter, mm 216 | Landing diameter, mm 30 | Cutting width, mm 2.8 | Blade thickness, mm 1.8 | Number of teeth 24 | α, °.5 | β, ° 15 | 1 499 rub. | In garbage |
| Article 290.220.24M | Outer diameter, mm 220 | Landing diameter, mm 30 | Cutting width, mm 2.8 | Blade thickness, mm 1.8 | Number of teeth 24 | α, ° 20 | β, ° 10 | 2 239 rbl. | In garbage |
| Article 290.230.24M | Outer diameter, mm 230 | Landing diameter, mm 30 | Cutting width, mm 2.8 | Blade thickness, mm 1.8 | Number of teeth 24 | α, ° 20 | β, ° 10 | 2 411 rub. | In garbage |
| Article 290.235.24L | Outer diameter, mm 235 | Landing diameter, mm 25 | Cutting width, mm 2.8 | Blade thickness, mm 1.8 | Number of teeth 24 | α, ° 20 | β, ° 10 | 2 350 rub. | In garbage |
| Article 290.235.24M | Outer diameter, mm 235 | Landing diameter, mm 30 | Cutting width, mm 2.8 | Blade thickness, mm 1.8 | Number of teeth 24 | α, ° 20 | β, ° 10 | 2 437 rbl. | In garbage |
| Article 290.240.24M | Outer diameter, mm 240 | Landing diameter, mm 30 | Cutting width, mm 2.8 | Blade thickness, mm 1.8 | Number of teeth 24 | α, ° 20 | β, ° 10 | 2 419 rub. | In garbage |
| Article 290.250.24M | Outer diameter, mm 250 | Landing diameter, mm 30 | Cutting width, mm 2.8 | Blade thickness, mm 1.8 | Number of teeth 24 | α, ° 20 | β, ° 10 | 2 608 rub. | In garbage |
| Article 290.270.28M | Outer diameter, mm 270 | Landing diameter, mm 30 | Cutting width, mm 2.8 | Blade thickness, mm 1.8 | Number of teeth 28 | α, ° 20 | β, ° 10 | 3 329 rbl. | In garbage |
High-quality and accurate cutting of wood is possible only with a good saw and reliable consumables. saw blades. We would like to draw your attention to saw blades with variable bevel teeth (series 290), designed for ripping wood.
Choosing Circular Saw Blades – Ace Hardware
Features of the presented tool
The blade is designed for ripping or cross-cutting and sawing glued seams, it is possible to cut plywood. The work is carried out accurately and accurately, which is ensured by the properties of the disc:
The product has variable beveled teeth.
The number of teeth is small. only 12 or 24.
Good hardness and power.
High-quality removal of chips from the working area.
These blades are ideal for low speed automatic and hand saws. At the base of the blade there are special holes that allow you to mount the disc on different machines and saws. The CMT rip saw blade is a guarantee of reliability and productivity, it is the best choice for miter or circular saws.
The disc is molded from steel, and on the teeth it has special solders from a high-quality alloy, which ensures their sharpness and hardness.
Where to buy the discs presented?
If you are currently looking for high-quality and inexpensive rip saws for glued joints, we are ready to offer you the best options. In addition to disks with variable bevel teeth, we also have models with helical sharpening in our catalog, which are also well suited for such work.
The disc types presented are excellent for both hard and soft wood species. When working with them, you significantly reduce the number of scrap, time consumption and get more high-quality processed material.
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Saw blade for circular saw for wood MTX 732199 190x30x48 teeth
Adapter ring for saw blade 32×25.4mm
Saw blade for wood 190x30x40 teeth Intertool CT-3041
Saw blade for wood MTX 732179 190x30x24tooth
Saw blade for wood Intertool CT-3046 230x30x40 teeth
Saw blade for wood Intertool CT-3023 210x30x40 teeth
Saw blade for wood 190x30x50 teeth Intertool CT-3042
Production technology
Most often, discs are made of high speed or chrome vanadium steel (HSS or CV marking, respectively). The addition of tungsten and molybdenum gives the tooling significant strength, making it less brittle under stress.
There are carbide products (TC marking), in which the main part is made of chrome vanadium steel, and the teeth. they are soldered onto the disc. from tungsten carbide. Although these attachments are more expensive than conventional steel discs for circular saws, they last 10 times longer.
A tooling with diamond cutting segments is also used, which are attached to the disc by laser welding. They are highly durable and capable of handling hard materials such as stone and concrete.
The thickness of the disc can be from 0.7 to 2.8 mm, the thickness of the cut depends on it.
Teeth vary in size, shape, angle, and set pattern. The following types of teeth are most common: divorced, with a straight-sided profile, multidirectional, trapezoidal. Depending on this, it is determined how the load is exerted on the cutting part. For example, set teeth are subject to the greatest load at the ends of the cutting segments, while in multidirectional cutting, the load is evenly distributed during sawing.
Types of saw blades
- Woodworking is used for processing solid wood and sawn timber. They differ in the operations performed. For a fast cut, a tooling with a small number of large teeth is used, which creates a rough cut. For a clean cut, you need a saw blade with a small number of fine teeth. The sawing process will be slow, but it will be possible to achieve a neat cut. For rip sawing, discs with coarse teeth are intended, since the workpiece is processed along the wood fibers, for transverse sawing. with fine teeth. For circular saws, there are also universal discs that have a combination of fine and large teeth. Thus, it is possible to carry out longitudinal and transverse cuts without changing the equipment.
- For metal, they are intended for sawing profiles, pipes, angles, fittings. They differ in the type of processed metals: tooling for aluminum, low-carbon steel, brass, bronze and others. As a rule, a blade without a liquid cooling system has special slots in the body, which serve as temperature compensators, which reduces heating during sawing. There is also a tooling designed for machines with a liquid cooling system.
- Stone cuttings are used for working with bricks, tiles, marble, granite, concrete and reinforced concrete. As a rule, the cutting edge of these discs is diamond-coated. There are products for dry and wet cutting. The feature of the former is a segmented cutting edge with teeth and cooling holes. In the process of work, it is necessary to take frequent breaks to allow such a nozzle to cool down. The latter have no teeth, diamond soldering goes along the entire edge, the height of the diamond layer can reach 5.5 mm. this is a professional equipment for intensive use. Cooling is carried out due to the liquid supplied to the working area.
- For plastic, they are used to work with plastic, fiberglass, metal-plastic. Usually the teeth of this equipment have a negative sharpening angle, so even thin workpieces can be accurately cut. This saw blade ensures a clean cut. Some types of equipment in this group can be used to work with laminate and wood fiberboard and chipboard blanks.
Saw blades
The saw blade is an accessory for circular, miter, combined saws and grinders, designed for sawing workpieces, as well as cutting work.
A little about the operation of saw equipment
Use only sharp blades for safe sawing, as damaged or dull bits can cause seizure in the material. This will block the motor of the tool.
It is required to select the optimal feed mode and not exceed the maximum allowable speed of the tooling.
In order for the blade to serve for a long time and not to frequently sharpen the teeth, it is recommended to clean it of adhered sawing waste after working with a circular saw.
Selection options
The disc diameter can be from 130 to 500 mm. The higher this value, the larger the workpieces the circular saw can handle with this blade, the same condition applies to the miter saw attachment.
The landing diameter is indicated in millimeters and is matched to the size of the circular saw. The most common discs with a diameter of 16, 20, 22, for side saws. 20, 22, 24, 30, for angle grinders. 22.2.
The number of segments can be from 10 to 150 pieces. The more of them, the more accurate the cut will be. For rough cuts, for example, usually take a tool with the number of segments up to 20 pieces.
Saw equipment is a consumable item and should be replaced as it is worn out. But you can postpone its purchase by sharpening the blunt teeth of an existing disc. How to do it? You don’t need special skills and equipment. A simple instruction is in our article.