The versatility and versatility of the grinder (angle grinder) is off the charts. This tool is truly one of the most popular and useful in repair and construction work. The attachments on an angle grinder play a key role in determining its functionality and ability to work with different materials.
Here are some additional tips for choosing wheels for an angle grinder depending on the task:
Cutting Wheels: For cutting metal, concrete, or tile, use appropriate diamond or abrasive discs. For wood, you will need a special wood disc for an angle grinder.
Sanding Wheels: For smoothing and sanding metal, wood, or other materials, use suitable sanding wheels. They can have different grain sizes depending on the desired degree of surface treatment.
Grinding and Polishing Wheels: For removing rust from metal or polishing surfaces, choose the appropriate grinding wheel.
Blades for cutting stone and concrete: When working with stone and concrete, use a diamond wheel as it is more efficient and durable.
Cutting wheel 125 mm – standard for working with any material.
For metal work, you can choose from options made from steel with an alumina or electrorund abrasive surface. For stone processing, the most suitable cutting element is made of silicon carbide abrasive, which can be either solid or broken into segments. The first option is used when working with dolomite and limestone, while the second is used for processing tiles and other hard surfaces.
For processing wood, a wood saw blade with a different tooth shape will be optimal. There are several options: variable beveled and straight models. The former is suitable for universal use, while the latter is designed to work with coniferous and other softwoods. In addition, there are trapezoid-shaped teeth that are suitable for medium to high-density materials.
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Diamond wheel for angle grinders
It is also necessary to note diamond accessories made of steel with the addition of diamond chips, are characterized by increased wear resistance and are ideal for various types of material processing.
Taking into account the fixation technology:
The galvanic method (tile-cutting disc) is used for sandstone and relatively soft rocks.
Laser welding or sintering (discs for concrete) is used for working with concrete, cutting porcelain stoneware, and other materials.
Taking into account the type of cutting edge:
Segment diamond blades are designed for rough cutting of concrete, stone, and other high-strength materials using the dry or wet method.
Solid bits are used for precision cutting, including metals and stone.
Oblique cuts (turbo) provide fast and precise processing of various materials using the dry method.
Taking into account the type of artificial diamonds used:
Monocrystalline diamonds are used for processing metal and stone.
Polycrystalline diamonds are used for softer materials.
Metal disc – design features.
A fiberglass reinforcing mesh serves as the basis and a kind of skeleton, which may include two or more components. Without it, even with a slight lateral load, it is almost impossible to keep the sander in a stable position, and the disc may fly apart.
Important characteristics of the reinforcing mesh include the base, the thickness of the threads, their strength, and mesh size. These parameters directly affect the performance of the equipment, since the larger the area occupied by the mesh, the less space remains for abrasive materials.
The composition of cutting wheels includes bakelite bonds, various fillers, and abrasives. Abrasives can be made of white, ordinary zirconium alumina, or silicon carbide. The composition and size of the abrasive fraction determine the functional purpose of cutting wheels, since some of them are better suited for cutting carbon steel, others for stainless steel (without overheating and damaging alloying elements), or for processing aluminum, and still others for working with stone. materials.
The manufacturing process of cutting wheels involves mixing abrasives with various fillers (which are a trade secret of the manufacturer) and phenol-formaldehyde resin in special mixing machines. The resulting mass goes through several stages of processing, including drying, adding reinforcing mesh, and forming blanks for future cutting wheels using hydraulic presses. Then, during the firing process in kilns, the structure of the abrasive materials is fixed, giving them the necessary strength and characteristics.
Disc sizes are short and to the point.
The outer diameter of the discs can be as follows: 115, 125, 150, 180, and 230 mm. This parameter indicates the compatibility of the disc with the angle grinder (angle grinder) for which it is intended. For example, a disk with a diameter of 230 mm is suitable for an angle grinder with the same diameter.
Often, people working with different sizes of angle grinders can use the same disc starting with a larger machine and moving on to a smaller one, but this requires care and skill in setting up the tool.
The cutting depth of the workpiece depends on the size of the disk and increases with increasing diameter of the equipment. But it should be remembered that it is always less than half the diameter of the disk, even if you continue cutting to the clamping nut. The tool body will not allow you to cut the material completely.
The thickness of the discs can be 0.8, 1, 1.2, 1.6, 2, 2.5, or 3 mm. This parameter is important when it is necessary to control the width of the cut obtained when working with this disk.
The inner diameter of the disc is the size of the hole through which the disc fits onto the angle grinder spindle. It should also match the spindle size of your tool to ensure a secure fit. The standard bore diameter is 22.23 mm.
The thickness of the accessory is also important and depends on the size of the disc. For example, discs with diameters of 115, 125, and 150 mm typically have a thickness ranging from 0.8 to 3.2 mm, while discs with diameters of 180 and 200 mm can have a thickness of 4 mm.
What is so great about a thin cutting wheel for angle grinders?
Easier cutting and increased productivity: Thanks to the lower resistance of steel, thin blades allow for more efficient and faster cutting of materials.
Reduced stress on the sander and less energy consumption: Thin discs require less energy to operate, which reduces stress on the tool and increases its life.
Reduced cutting edge heat: Thin blades generate less heat when cutting, reducing the risk of overheating the material.
Greater elasticity under lateral loads: Thin discs cope better with lateral loads, which is especially important when the tool is not held vertically by the technician and there is some inclined load.
Less risk of injury if a rupture occurs: If a thin disc ruptures, there is less risk of injury than with thicker discs.
Suitable for cordless tools and low-power models: Thin blades are more suitable for cordless tools and models with less powerful motors.
Advantages of a thick blade for cutting metal
- Easy side sanding capability: Thick discs can be used for larger work and side sanding of material.
- Low Breakability: Thick blades are generally less prone to tearing and provide more reliable cutting.
- Less wear: Thick discs have a long service life and are less susceptible to wear.
- Well-Controlled Straight Cut: Thick blades provide more consistent, straight cuts when cutting materials.
- Both types of discs have their advantages and disadvantages, and the choice depends on the specific task and the characteristics of the angle grinder being used.
Grinding disc and grinding wheel.
These attachments clean the surface of workpieces and are represented by metal brushes, discs with a mandrel, and end wheels. This also includes petal circles, which have fan-shaped segments on the surface.
The working part of the circles looks like two disks fastened to each other or is made in the shape of a cup. The edge often looks like a brush or wire. Such circles are needed to remove rust, varnish, or paint from the surface. This is an excellent option for performing repair work related to the car body. A striking example is a brush on an angle grinder – for cleaning, roughing, and rough leveling.
Sanding attachments will also help clean off plaster and remove traces of concrete. This includes diamond wheels for roughing surfaces, grinding wheels, and torsion cutters.
These attachments are designed for the surface treatment of workpieces and include a variety of options such as wire brushes, mandrel wheels, end wheels, and flap wheels with fan-shaped segments.
The working part of such circles can be in the form of two fastened disks or a cup, and their edge is often a brush or wire. These attachments are used to remove rust, varnish, or paint from the surface of a material. They are an excellent choice for car body repair work. An example of such attachment is a brush on an angle grinder, which is used for cleaning, roughing, and rough leveling the surface.
The scraping disc also allows you to remove plaster and remove traces of concrete. This includes diamond grinding discs for roughing surfaces, grinding discs, and wheels, as well as torsion cutters.
Grinding wheel for grinder
There are universal models of tools that can process almost any surface, including materials from stone and metal to wood. At the same time, there are specialized wheels created specifically for processing and finishing polishing of wood surfaces. To work with the hardest materials, such as metal, concrete, or natural stone, specialized discs and equipment are used. In the case of wood sanding, Velcro sanding wheels are used, which can be easily replaced thanks to the Velcro fastening system.
For more detailed information, the following types of structures are distinguished:
- Cord Brush: Used for rough finishing such as leveling and cleaning surfaces.
- End flap wheel: designed for grinding the ends of parts.
- Flap grinding wheel: wheels in the form of abrasive blades with different grain sizes, which affect the quality of grinding.
- Cloth or felt pads: Used for high-gloss polishing and may require additional liquid or fine abrasive paste.
- Fiber attachments: optimally suited for processing various metal surfaces.
- Chain and solid-type plane planes: designed for rough processing of logs, timber, and other types of wood. For safety, they should be used with angle grinders equipped with additional handles.
Wood saw blade
Saw blades for woodworking come in two main types: carbide and solid.
Monolithic blades are usually made of high-carbon steel and can have sharp, hacksaw-like teeth or curved teeth. The first option is characterized by good performance when cutting both hard and soft wood, while the second option is more suitable for processing softwood varieties. It is important to note that solid blades tend to dull quickly and can only be sharpened a limited number of times, and some models are not recommended for sharpening at all.
Carbide blades for woodworking are made from high-strength tool steel and have higher wear resistance compared to solid saws. They work effectively on hardwood and provide a clean, neat cut. However, it is worth noting that their price is higher than that of monolithic discs, and sharpening requires special equipment and certain skills.
Thus, the choice between monolithic and carbide disks depends on the specific tasks and preferences of the master, taking into account both the budget and the requirements for the quality of wood processing.
Woodcutter for grinder
Woodworking tools can be divided into two main types: wheels and cutters.
The circles have a sideways rasp-like appearance. They are typically used for rough woodworking such as removing material or shaping wood surfaces.
Milling cutters, on the other hand, are designed for more precise operations. They are used for creating grooves, recesses, processing ends, and edges, as well as for sawing small workpieces. The cutters are highly accurate and allow the craftsman to perform more complex operations when processing wood.
The choice between wheels and cutters depends on the specific application and requirements of the material being processed, so each has its unique advantages and applications.
Abrasive grinding wheel
These are classic wheels that are also used in sharpening machines. They differ from cutting wheels in that they have a greater thickness, the cross-section of which is at least 5 mm. Using such attachments you can not only sharpen tools but also clean off welding seams. They are also suitable for rough grinding of metal surfaces.