What are wood discs for angle grinder and how to use them properly?
Angle grinder is one of the most popular tools for processing various surfaces. whether it is metal, stone or concrete. It is also called an angle grinder. The angle grinder is typically used for machining metal or stone workpieces. But in some cases the angle grinder can also be used as a woodworking tool.
This is the question most owners of angle grinder. Yes, an angle grinder can be used for processing wooden surfaces. But not always. By its purpose, the angle grinder is not designed for work on wood. The special nozzles with which it is recommended to carry out work on wood, began to deliver on the market joinery tools not so long ago.
The main operations that can be performed with this tool on wooden surfaces are grinding and roughing work. For them it is worth using special attachments. It is important to remember. under no circumstances should wood be cut with a wheel for metal or stone. It can cause breakage of the tool at best, or even injury. The saw blades can get stuck in the wooden workpiece, which can cause the tool to fly out of your hands. Also, cutting wheels tend to overheat when cutting wood. In this case the wheel can fall apart and get in the face.
In general, there are three basic models of cutting wheels for angle grinders. These are saw blades, diamond-coated and abrasive discs.
Diamond coated grinding discs are designed for finishing metal surfaces. They are distinguished by their high strength and resistance to wear. They can also be used to sharpen dull tools. Cutting wood with this wheel is not recommended. Abrasive discs are designed for grinding and have different grit sizes. The abrasive is the material that makes up the base of the wheel. Quite often, electrocorundum or silicon carbide can be used as such components.
Circular saw blades are for sawing and have a wide range of classifications. They can be designed for different materials. But not all of these types are recommended for cutting or working on wood. There are separate nozzle options for wood.
Wood should be cut with an angle grinder, only using metal discs specially designed for this purpose, with teeth on the edges. There are some variations of discs that can be used for carving in wood. Usually wood cutting with a grinder is shallow. For cutting large workpieces, it is better to use a circular saw, which is specially designed for processing these materials. But some attachments on the grinder allow you to cut or process small workpieces.
These attachments can be differentiated in their purpose by the following types. cutting discs, roughing models, and discs for polishing or sanding.
Among the cutting wheel options for wood, two are worth mentioning.
- Circular wheel. This nozzle is a circle with teeth. These usually have a maximum diameter of 180 mm. There are tips on larger discs. there are more compact grinding wheels that do not have any tips. In general, circular saw blades are considered a “dangerous” option for a sander to cut wooden workpieces. It is therefore advisable to choose circular saw blades that are designed to prevent it from jamming in the material. This is achieved by the fact that the teeth on this disc variant are slightly offset to the sides.
- Chain wheels. These models are best suited for use with angle grinders on wood. The risk of the tool jamming in the workpiece is minimized. The chain used on chain saws is threaded on the rotating base of this sander head. In this case, the chain fit on the wheel is not fixed, which reduces the danger of handling the tool. So, even if the chain falls off the disc during operation, the disc itself won’t break and fly off to the sides like it might happen with other models.
Discs with more or fewer teeth are also worth mentioning. In this case, their number will depend on the diameter of the wheel. On discs of small diameter (up to 150 mm) 3 teeth are set. Larger diameter discs have 4 teeth. To work on wood, it is desirable to use discs of small diameter, that is, with 3 teeth. Larger discs are usually used by professionals for larger workpieces. Small discs are suitable for standard domestic work. In general, such attachments cope very well with the sawing of wooden workpieces.
It is necessary to speak separately about the disks made of a special material. tungsten carbide. They are relatively new, but they made it possible to saw wood with an angle grinder. Outwardly, the head is a circle divided into cutting segments. That is the teeth themselves on such a disk are absent. A great advantage of this type of wheels is their high durability. The disk easily cuts wood of any strength, and even the presence of nails or other metal products in the workpiece will not interfere with its work. the circle of tungsten carbide cuts and small metal parts. The cost of such a wood cutting tool is much higher than the previous options, but the safety and high quality of work with this disc is guaranteed.
The next category of models of wheels for angle grinder. roughing. These nozzles are designed for work on the surface of the workpiece. For example, to remove bark, remove a lot of dirt, or level the workpiece. The processing operations themselves are much safer than cutting wood. Therefore, the angle grinder for woodworking can be safely used, but do not forget about the special attachments. It is customary to divide roughing bits into several types. Among them, roughing discs with spikes or abrasive grit can be distinguished. Abrasive cutters come in different sizes. Thanks to them you can grind the workpiece from the face or remove top layers.
Also the roughing nozzle variants include discs with twisted wire. Sometimes they are called “cord brushes. These nozzles can be of two kinds. The first looks like a cup with a wire attached to it, and the second is a disk with a wire at the edges. With these devices is convenient to remove old paint, rust, etc. from the surface of the workpiece. д. Twisted wire wheels are also used for brushing wood surfaces. This is done to give the surface an antique effect. The wire nozzles themselves represent a disk chipper, because they perform essentially the same functions.
Varieties of discs for angle grinder. tips on choosing discs for angle grinder
Angle grinder (angle grinder), or as it was nicknamed in the Soviet Union, the angle grinder (the first models in the USSR came from this country). one of the most popular construction tools. Their primary purpose is twofold: cutting and grinding construction materials.
- You can cut wood, metal, stone, and other materials with an angle grinder. angle grinder in this almost has no analogues. it works quickly, has high power, low depreciation. For cutting use special types of discs for the angle grinder. abrasive.
- Grinding is the removal of all irregularities on the surface of the material. whether it is wooden boards, metal planks, etc.д. Here, for the proper use of the angle grinder, you will need other types of discs. grinding discs.
For all the versatility of such a tool as an angle grinder, it is important to observe all the rules of its use.
One of the main. the correct selection of discs for angle grinder. and for this you need to understand in detail what their varieties exist. About this we will tell in our article.
What discs are there
Types of angle grinder discs are distinguished by their function, size, presence and number of notches on the disc edge, and the material of which they are made. All information about their specifications can usually be obtained from the label on the disc itself.
- Parting discs. As the name implies, they are designed to cut any material, whether metal, wood, concrete, etc.д. They are always made of solid stainless steel and are distinguished by their size, thickness, maximum allowable rotation speed, and the list of materials that they can cut. We categorically recommend not using those types of discs for angle grinder, which are designed for cutting in metal or other materials. Attempting to grind something with a cutting wheel can result in material damage.
- Grinding wheels. Also referred to as skinning discs, they are very different from cut-off discs in both thickness and shape. They are used for grinding seams after welding, preparing the material for welding or other manipulations, removing any roughness and irregularities on the surface. They are also suitable for sharpening knives, axes, and other tools. There are different types of grinding discs for angle grinder. face, radial, packet, folded, with a simple hub, mandrel or with ventilation. One of their varieties is the flap disc, which is characterized by the fact that small blades made of abrasive material run along the edge of the disc. You should choose based on the type and hardness of the processed material, as well as its topography, the specific type of work. All grinding wheels wear much slower than cut-off wheels.
Grinding wheels come in completely different shapes. they must also be selected based on the purpose of the work. They can be either flat or annular, and have a variety of single- or double-sided profiles. Not all grinding wheels are made of steel. Their variety as fibre sanding discs is very popular. They are used for soft grinding of steel, non-ferrous metals. They are quite soft, made of aluminum oxide, silicon carbide or other materials, and for their installation will require a supporting disc.
How to choose a disc for angle grinder
One of the main criteria for tooling selection is the abrasive material applied to the wheels:
- Diamond is suitable for the longest possible use, it is a very heat resistant and durable material. It is applied to the wheels in two ways. sintering and laser welding. The second method is much more expensive, so such discs cost more. They are usually used in professional tools on the construction site. For home works will do and the first option.
- Elbor. Usually used for metal work, including knife sharpening, as well as work on high-alloyed steel (containing more than 10% impurities). Its level of heat resistance is even higher than that of diamonds.
- Electrocorundum is used for machining various types of steel, including iron, as well as cast iron.
- Silicon carbide is ideal for working on fragile materials. It is used for grinding faora, glass, ceramic and similar products.
Also very important are the dimensions of discs for angle grinder. 115, 125, 150, 180 and 230 mm standard. Select them in accordance with the allowable size on your angle grinder. if you choose the wrong one, there is a great risk of ruining the device. Small saws have a blade diameter of 115 or 125 mm, medium saws have 150 and 180 mm, and heavy saws have 230 mm. So you have to select the right grinding wheels accordingly. In addition to size, the maximum rotation speed also matters. For 115 mm discs it is 13290 rpm, 125 mm. 12230, 150 mm. 10190, for 230 mm. 6650 rpm. All these values should also be printed on the grinding wheel marking.
You should select the thickness of your discs depending on the task you have in mind. For finer work, such as cutting sheet metal, thinner discs. from 0.8mm to 1mm. For cutting pipes, wooden blocks and other tougher materials, a thickness of 2 to 2.5 mm.
Another important parameter is the grit size of the disc. The abrasive (grinding) material is applied to the disc in the form of crystals and arranged at a certain density. The size of these crystals forms the grit index. For rough work or initial sanding discs with a large grit are used, for finer sanding, respectively, will require a smaller grit.
Discs and nozzles for angle grinder. types, purpose, features
Angle grinder is a power tool that performs multifunctional tasks.
Angle grinders are used to cut metal, concrete, wood, tile and plastic, and to grind, sand and polish different types of surfaces.
It is used for removing paint and rust, and replaces the sharpening machine. But it should be noted that each type of work requires a specific tooling: a specific disc or nozzle. Let’s talk about that.
The parameter that affects the depth of cutting and grinding surface area of the angle grinder is the outer diameter of the disc. The discs are available in the following sizes: 115, 125, 180, 230, 280 and 400 millimetres. The last two are very seldom used in work.
Important! Before you get to work, find out what kind of disc you’ll need for the task at hand. the diameter of the angle grinder bit and the rotational speed. You can read this information on the surface of the disc. as a general rule, RPM depends on the disc diameter the larger the diameter, the lower the RPM. It is necessary to observe this, because if you use it incorrectly, you can harm yourself and those around you.
One of the main functions of an angle grinder is to cut metal and other materials such as bricks, concrete, tiles, wood, and plastic. Cutting discs are used for this kind of work. The thinness of this type of bit is a characteristic feature, which allows you to quickly and accurately cut the desired material. Cutting discs for angle grinder look like DVDs that we are accustomed to.
Depending on the selected material use the appropriate type of tooling:
- Metal cutting discs. If you need fast and high-quality results, then for cutting metal products we recommend using an angle grinder. The bits are made of aluminum oxide and are usually blue in color. We advise to buy several pieces at once, as metal discs wear out quickly in work.
- Cutting discs for concrete and stone. Stone, brick and slate can be cut with this attachment. Such a disc is based on silicon carbide that is bound with a substance made of synthetic resins.
- Cutting discs in wood. This kind of tooling is designed to work with any kind of wood. But to rationalize the use of the angle grinder, we advise to buy for work with wood attachments that can cut not only wood, but also metal.
- Diamond cutting discs. This type of nozzle can be used to work with any kind of material: metal, brick, concrete, wood, ceramics and others. The base of the nozzle is made of metal and the edge is coated with diamond grit. The discs have a long service life. It is worth noting that when buying a diamond nozzle you need to specify the type of cutting: dry or wet.
Abrasive or sharpening discs are used for roughing out metal or stone as a preparatory step for welding or grinding work. The nozzle is capable of removing a large layer of material. The thickness of such a nozzle is more than 5 millimeters and has a different type of grit.
Careful! Stripping work produces sparks that can injure skin and clothing, so be careful.
Also, the angle grinder in combination with an abrasive nozzle can replace the sharpening machine, so it is easy to upgrade the garden equipment. When sharpening avoid overheating the metal: the pressure should be light with a gradual advance of the angle grinder. After sanding, use an emery wheel for a perfect finish.
Sanding disc is a sandpaper made in the form of a circle with velcro or petals. Such a tool is used to smooth out irregularities on the surface of metal, wood, plastic and other materials. Also the sanding disc is used as the final stage of processing the material. It is worth noting that such tools come in different abrasiveness: for example, sandpaper up to 100 grit is used to remove a lot of material, and sandpaper grit from 100 grit is designed for finishing work.
Another kind of grinding attachment is the abrasive brush. It is effectively used to remove rust, old peeling paint, or dried-on dirt from garden tools.
A Grinding Disc That EATS Metal! Victograin VS Traditional Grinding Discs
- wire disc. suitable for cleaning hard-to-reach places: crevices, narrow spaces and corners
- wire bowl. suitable for processing of large surface areas
This type of nozzles is designed for polishing various coatings and delicate surfaces. Externally, it is a brush made of felt, textile or soft polymeric material. It is worth noting that for delicate surfaces it is better to use large diameter brushes, as they work at low speeds.
Angle grinder. a complex tool that can perform a lot of work. The main thing is to use the angle grinder for its intended purpose according to the instructions and safety precautions. Buy a power tool in Rostov-on-Don of high quality and satisfying all standards.
To learn more about the range of angle grinders (angle grinder), please follow this link
How to choose the right disc on the angle grinder
Angle grinder discs can be purchased in a wide range and at gentle and high prices. With the help of products made of different materials and by different technologies, perform a variety of operations. What are the main rules of choice and what to pay attention to? It is necessary to know clearly what materials are to be worked with. And you should also pay attention to such factors:
- Diameter and thickness (the indicators should not be more than indicated in the passport data on the angle grinder or, more simply, the disc must fit into the protective cover);
- seating size (it must correspond to the diameter of the spindle of the angle grinder);
- rotation speed (it must correspond to the type of angle grinder, indicated on the disc itself);
- type of cutting (dry, wet or combined).
The rules to adhere to, so that the products will last longer, are simple. For hard materials choose discs with soft strapping, for soft. with hard. The working area must not overheat during operation. Therefore, it is recommended that the disc be periodically removed from the material so that it cools down. Do not make a deep cut in one pass. Do not press the product hard and do not work at high speeds. Remember: if the work process causes disc wobbling or cracking, do not cut with this consumable. It must be replaced.
We ask those who have encountered, chosen and worked with specific discs for angle grinders to share their experience in the Комментарии и мнения владельцев to this text.
Types of grinding discs
Grinding discs can be petal and abrasive. Both are equally effective. But when working with the abrasive species are also removed such irregularities in the surface of the material, such as residues from welding, burrs from metal and others. Petal discs function more gently. Hard elements can also be removed, but the embossed surface will be treated better overall.
There are other types of nozzles. Velcro-type attachments have recently become very popular. They are purchased when it is necessary to perform frequent grinding of metal.
Other interesting attachments are the scrapers, which have been successfully used for grouting and scraping various surfaces. Often it is a good alternative to the abrasive grinding wheel.
Safety rules when working with the angle grinder and the choice of discs for the angle grinder
Angle grinder or angle grinder. an indispensable tool in the arsenal of any master. angle grinder cut profile and round pipes, angles, grind workpieces, remove paint, used as a cutting machine. But the angle grinder is considered one of the most traumatic tools, because.к. The cutting disc rotates at high speed. We will tell you how to work with the angle grinder to avoid dangers and pick up the right equipment.
- What protection is needed to work with an angle grinder?
- What to check before you start working?
- Which side of the cutting disc for metal on the angle grinder?
- Cut with sparks on itself or away from you?
- How to cut metal, so the disc does not jam?
- How to choose the right disc for the angle grinder?
- Basic rules for working with an angle grinder
What protection you need to work with an angle grinder?
Metal cutting disc 115 or 125 mm in diameter rotates at speeds over 10,000 rpm. If the disc breaks during operation, the shards become a bullet and can injure unprotected parts of the body. Danger to humans are both abrasive particles of the disc, and red-hot metal particles that can get into the eyes.
Therefore, to work with an angle grinder, you need protective equipment:
- Tight clothing.
- Goggles or face shield.
- Closed, hard-soled shoes.
- A respirator to protect your respiratory system when cutting bricks, stone, concrete, or ceramic with an angle grinder.
- Gloves made of thick material such as leather or split leather.
Important! When working with an angle grinder, button up the sleeve cuffs and jacket on all buttons. If clothing is loose, it could become caught in the rotating disc and cause injury.
What you need to check before you start working?
Angle grinder. angle grinder is a tool that runs on electrical power (cordless models will be left out of brackets). The operator of the angle grinder, before starting work with the angle grinder, should check that:
- The power cord is free of cracks and breaks.
- The tool has a full body.
- The tool is equipped with a protective shield.
- Disc is suitable for the type of work to be performed.
- The disc has no chips, no visible damage and rotates without runout.
Which side of the cutting wheel on the angle grinder?
Metal cutting disc for angle grinders is a consumable abrasive replacement tool. Seating diameter of the disc is 22.2 mm. There is a disc manufacturer’s logo, technical data and a metal washer on the disc face. There is no such washer on the back “clean” side of the cutting disc. They do not write on the disc which side to put it on the angle grinder. inward or outward. Follow the logic.
- If you mount a metal cutting disc with a metal jacket, t.е. with the pattern facing out, the operator can always see what he is working with. This is important if more than one person is using the same tool.
- If you mount the cutting wheel with its back to the tool’s gearbox, i.e.е. If the metal washer is attached to the angle grinder’s flange, the clamping nut must make contact with the abrasive surface of the disc. The wheel ends up biting into the rim, and because of the self-tightening, it is harder to unscrew than if the washer metal was in contact with the nut metal.
Important! The key that comes with the angle grinder, in the first place is designed for unscrewing the retaining nut, which is firmly screwed hands, thanks to self-tightening, if a little dokrotroll cutting disc, clamping retainer shaft on the gearbox angle grinder.
Cutting with sparks on yourself or away from you?
Each craftsman chooses his own way of working with an angle grinder, and each has both pros and cons. If you cut with sparks from yourself, then:
Minus. if you cut backwards with sparks from yourself, the tool can fly toward the operator if it is ripped out of his hands.
The plus method. if the tool is knocked out and hands, and power grinders with a disc diameter of 230 mm can exceed 2 kW, angle grinder will fly away from the operator.
Important! If you are cutting metal on your own, do not stand in the plane of the blade rotation. Adjust the safety guard so that sparks fly downward, under your feet and not on your clothes. Two more important rules:
- If you cut with the angle grinder sparks toward you, start cutting the metal from the edge closest to you, driving the angle grinder forward.
- If you are cutting with sparks away from you, start cutting the metal at the edge farthest away from you and pull the angle grinder toward you.
How to cut metal without the blade jamming?
Use extra caution when cutting thick workpieces with an angle grinder, e.g. square and rectangular shapes. The main danger. if you misplace the workpiece, the edges of the groove will close at the finish, and the angle grinder will jam the disk. This can cause it to break, the tool to jam, or backfire.
The main rule is that when cutting metal, the edges of the workpiece should gradually open or remain in the original position. To do this, put planks under the tube or position the section to be cut from the edge of the workbench or table.
Important! Take special care when cutting pipe or reinforcing bars that are under tension, e.g. when demolishing structural steel parts.к. the angle grinder disc can jam at the most unexpected moment.
How to choose the right disc for the angle grinder?
Discs for the angle grinder are classified into:
The diameter of discs for angle grinders ranges from 115 mm to 230 mm. The most universal diameter is considered to be 125 mm. Disc diameter of 150 use on a medium power angle grinder. Disc diameter of 180 and 230 mm put on the most powerful angle grinders.
Important! Never mount circular saw blades on the angle grinder. These discs are not designed for angle grinders and mounting such a disc on an angle grinder is a direct way to injury.
The rule is to choose a disc for each type of work. Т.е. Do not grind metal or sharpen drill bits with a cut-off saw blade. Never attempt to fit a disc with a larger diameter on your angle grinder by removing the safety guard. For example, by putting a 125 mm diameter wheel on a 115 angle grinder. To work on stone, use t.н. diamond discs.
Circle sizes for angle grinders
The first thing to consider when choosing a wheel is its size. Just like the angle grinder itself, discs vary in external diameter, and are available in types of equipment from 115 to 230 mm. We will consider what are the discs for angle grinder on metal, wood and stone in size, what features each variety of.
|Disc diameter, mm||Purpose|
|115||The smallest wheels, which are used for work in hard-to-reach areas, processing of small workpieces.|
|125||The most popular tooling for angle grinder, which is used for domestic and professional purposes. Most wheels and grinders are designed for this diameter.|
|150||Discs of this size are intermediate between professional and home use. Not very common, but indispensable for a number of tasks.|
|230||Type is used in repair and construction work to cut concrete walls, stone, and brick. The high power of 230-mm blades allows you to “pull” large tooling, but as a result, the tool turns out to be quite heavy.|
Despite the variety of sizes, the most common only on 125 and 230. The first are conventionally considered “household”, the second. “professional”. But do not take the division too seriously: often on the construction site can not do without 125-mm wheels, the same is true and vice versa.
Recently, the sale of car wheels has become almost inseparable from the service of repairing tires or their seasonal change. The popularity of this operation rests, as usual, on three pillars. The first. the convenience of seasonal change of already mounted wheels, the second. better appearance of the car, the third. reducing its weight.
Depending on manufacturing technology, there are three types of wheels: stamped steel, cast aluminum alloys and wheels made of these alloys by volume stamping. Interestingly, not everyone knows the latter. Why? Yes, because they are called “forged”. The term “forged” distinguishes steel forging from aluminum forging, and implies repeatedly applying pressure to the heated billet. Besides the term forged is applied to such wheels all over the world, though they often apply bypass technologies which are just similar to pressure treatment of metal.
Let’s call a wheel a wheel and not a disc. Because the disc is just a part of the wheel, located between the hub and the rim, in which the tire rests. I must say that the wheels in general, somehow unlucky with terminology. Well, who of us has not read in the price-list or on the colorful signboard of tire fitting shop about how much it costs to mount the wheels of “thirteenth radius”?? I wonder who was the first to think that if the tire is marked with R13, it means its radius? Because the letter R stands for tire construction (radial) and has nothing to do with wheel size. I agree that every business has its professionalism, but to raise illiteracy to the rank of professional expressions No, please.
What wheels are available? Well, now we can talk about wheels. Let’s start with what aluminum alloy wheels are like. Aluminum alloy wheel technology was first used half a century ago. The difference between a pressed aluminum wheel and a steel wheel is that it is a single piece, and steel wheels are welded together from at least two parts: rim and disc (in the West, prefabricated light-alloy pressed wheels are much more common than monoblock ones). The main advantage of such wheels. reducing the weight of the wheel by 15-20% in relation to the cast, in relation to the steel difference is greater. This leads to lower inertial masses and less dynamic effects on the suspension. Lower weight means shorter acceleration and deceleration times and tangible fuel savings.
Low-pressure and back-pressure casting with subsequent machining of the workpiece on a lathe and milling machine are the most common methods used in wheel production. The technology makes it possible to create any intricate patterns to suit any taste.
Cast wheels have good thermal conductivity, which creates excellent heat dissipation from the braking system. Corrosion resistance of aluminum alloy wheels is provided by the appearance of an oxide film on the surface in case of damage to the paint coating. In case of high mechanical loads (collision with obstacles), unlike stamped wheels which are prone to cracking due to their structure, casted wheels deform.
For the first time the technology of manufacturing wheels of light alloys by punching was developed in the mid-1980s in the All-Union Institute of Light Alloys. The essence of it lies in obtaining the forging by step-by-step forming of a billet, followed by machining on metal-cutting machines.
The high strength of forged wheels is due to the fine grain structure of the metal, which has a directional nature. the strength of these wheels is 2.5 times higher than steel wheels and weighs 15-20% less than cast structures. Forged wheel material breaks under much higher loads than cast wheel, and this is their advantage! And under loads, when the cast wheel is crumpled (deforms plastically), the forged one remains intact, and if properly designed, dampens the impact due to elastic deformation. Corrosion resistance is very high due to its fine grain structure and alloy components.
The disadvantages of forged wheels are somewhat limited in design, due to the technology of their production.
To choose wheels with light alloys knowledge of manufacturing technology is necessary for choosing a suitable model for different types of vehicles. For example, for leisurely city driving the cast wheels with wide “spokes” with uncomplicated pattern will be enough. Jeep owners may also be advised cast wheels with heavy-duty rims equipped with safety strips that protect the tire from side impacts. For those who prefer a sporty driving style, pressed aluminum alloy wheels that can withstand high dynamic loads are more suitable. Lightweight wheels give such a car better dynamics.
The церемонии церемонии церемонии церемонии церемонии церемонии церемонии церемонии церемонии церемонии церемонии церемонии церемонии церемонии shows the performance of the system. The manual usually specifies all the parameters of the wheels that correspond to the design of the car. A wheel could be defined as: 6J x 14CH. The first digit is the rim width in inches, the letter is the bead shape. The second digit is the rim diameter in inches, the letter designation after that is the rim flange type: H. one-sided rim flange. It is a hub, a shoulder on the rim that prevents the tire from coming apart (only on the outside of the rim); H2 is a two-sided pick-up roll; CH is a combined two-sided roll; FH is a flat pick-up roll. Additionally, the following indexes are used to indicate wheel type and size: PCD. hole center diameter for mounting holes; DIA. hub hole diameter; ET (offset). distance from wheel seating plane to the middle of the rim profile. the value is specific for each vehicle model, calculated by the manufacturer based on the optimal ratio of handling characteristics and stability, and loading of powertrain components. These parameters should be taken into account in the first place, as they are defined by the technical features of the car itself and governed by the manufacturer’s instructions.
Some car owners install wheels with a reduced offset, believing that in this way they improve the stability of the car in the rotation. However, the resulting advantage in a slight increase in gauge leads to increased loads on the suspension components and reduces the life of the hub bearings.
Purpose and types of disks
In order to determine which nozzle is better to use for processing a specific type of material, you need to study the characteristics of different types of discs.
Classify circles by purpose, type of work performed, material of manufacture, design, size.
The intended use of the disc is specified in the labeling. for metal, stone, concrete, steel, wood, etc.п.
Type of work. for which the circle is designed is specified in the title:
- for cutting joints in concrete, asphalt.
According to the material of manufacture, models are classified into abrasive, diamond, carbide, and brush.
The best diamond discs for metal
Structurally, a diamond wheel is a steel disc with a cutting part and slots across the entire area. They help dissipate heat and reduce strain stress. The models’ range of applications includes cutting ceramic granite, glass, concrete, tile and marble. The rim of the tool is coated with diamond flecks.
Which metal angle grinder disc to choose depends on how the diamond grains are mounted. The electroplated version is designed for machining soft materials. For metal cutting use models, in which the grains are fixed by diamond welding. The main advantages of diamond tools are cutting accuracy, quiet operation, fast execution of tasks, absence of sparks.
The rim of a diamond disc is coated with diamond flecks
Petal discs for woodworking
This type of wheels consists of abrasive paper blades that are fixed in a circle with high-strength resins. Each subsequent flap covers the preceding one by ¾ of its length. The material used to build the disc ensures a soft finish. They are used for rough and finish woodworking. Abrasive elements are synthetic corundum and zircon with diameters ranging from 15 to 500 mm.
Small discs (100-120 grit) are suitable for fine treatment of wooden surfaces, preparation for painting and varnishing. medium (60-80). designed to remove the top layer from old wood, trimming the line of trimming or fitting connections, edges. discs with grit size 40-60 are used for rough works, stripping of old paint or varnish.
sanding discs and accessories
An important consideration when choosing a product of this type is the grain size. The smaller their size, the higher the quality of sanding.
The minimum grain size is 50, and the maximum is 3000.
Grinding circles are often used when repairing wooden floors or parquet, making doors, window frames, to remove rust from metal surfaces.
The following types are distinguished according to their purpose:
- universal. suitable for processing any material;
- highly specialized (for sanding and polishing wood, for working with metal, concrete, stone, granite surfaces).
Experts recommend choosing models of the first type for rough rough sanding, and finish work more effectively performed by specialized discs.
Cutting discs for concrete and stone
Such models are also called abrasive. Silicon carbide or electrocorundum are used as grit. What kind of disc put on the angle grinder, depending on the type of material to be processed. The marking can give the installer the information he needs. Products designed to work with concrete or stone must bear the words “Concentrate” and a green stripe.
The bits are similar to metal cutting wheels, but have different compositions. The former produce more sparks when working, so they are not advised to be installed in an angle grinder for cutting metal surfaces.
10 Best Angle Grinder Accessories
Wave or flat slates are often used as roofing material. When installing them there is a need to cut. Danger of the operation is the release of asbestos dust. that can cause cancer. To reduce the risk, you need to know what disk to cut slate with an angle grinder.
When using concrete and stone discs, it is recommended to cut along the wave. It is necessary to organize a constant supply of water in a thin stream to the place where the tool and the slate touch. You can buy such nozzles for cutting laminate. To exclude chips and cracks it helps to carry out the sawing on the front side of the board.
Discs for stone and concrete are called abrasive discs
These models are used to sharpen tools (shovel, crowbar), to clean up welding seams, to grind rebar. Do not perform the procedure with cutting discs, because they are too thin. For this reason sharpening nozzles are very thick, with a minimum thickness of 6 mm.
Roughing and scraping
Deburring discs refer to a group of grinding consumables, which are used for cleaning of dirty surfaces from paint, primer, varnish. They are made in the form of a disk or bowl with an embedded metal wire. The latter can be twisted or untwisted. The thicker the wire, the rougher the surface is roughened.
hard bits consist of an abrasive and a bakelite, vulcanite or ceramic bond, while soft bits are based on rubber.
Deburring discs are considered a type of scraping disc. They can remove rust and other stubborn dirt. In appearance, they are either flap brushes or metal brushes.
The choice of the right type of disc for the angle grinder depends on the nature of the tasks set, the type of material to be processed. All product characteristics can be determined by their markings.