Grinding machines are specialized devices. Before purchasing, you need to properly familiarize yourself with its classification and type, find out how much it costs. This will allow you to determine which model of grinder is better to buy.
In addition, in order to choose a grinder exactly for your needs, it is recommended that you familiarize yourself with the criteria for choosing it before buying, and also consider the availability of all sorts of additional functions in this electrical device. When choosing a particular model, it is recommended to pay attention to its demand among buyers. The editors of the site "bestx.htgetrid.com/en/" have prepared for you a rating of high-quality, best grinders as of 2020.
Description of the device
The main purpose of grinders is to grind various types of surfaces. However, choosing the most suitable model of such a machine is not an easy task as it may seem at first glance. The fact is that these power tools are divided into groups according to certain criteria, as well as technical characteristics.
For example, by the level of complexity of the design, as well as by the price category, they are divided into two types - household (for simple tasks) and professional (for performing more complex tasks). Typically, household grinders have low power ratings, are compact, and are easy to use on a daily basis. Another advantage of such household-class models is their low cost, which will be acceptable for almost every consumer. The disadvantage of these household tools is that they are not designed for long, heavy tasks. Also, it is not recommended to put too high a load on them.
Professional tool (professional grade grinders), specially designed and calculated for the performance of heavy, long-term work. However, their disadvantage is that they, as a rule, have a large mass, which is not always convenient when performing complex work, and also consume a large amount of energy. In addition, professional grade machines are much more expensive than cheap household power tools.
Advice! When choosing a grinder for household needs, which will be used periodically, you should not buy a bulky, professional model that is difficult to master, which, moreover, costs a lot of money.
For household needs, you can buy a budget model, and the purchase of an inexpensive universal device equipped with interchangeable nozzles will eliminate the problem of the limited specialization of the grinder.
Types of grinders
There are many different types of grinders. They differ from each other in both external design and technical characteristics.
Devices for grinding, according to the type of material being processed, are:
- For sanding parquet floors. They can process not only parquet, floor, but also other wooden coatings.
- For the processing of concrete materials.They are used for grinding concrete screed, ceilings or walls during construction work.
- For grinding stone. Can be used exclusively for processing materials made from artificial or natural stone.
- Angle grinders
Such devices are popularly called Bulgarians. They are the most versatile, functional electric tools that allow grinding stone, metal or concrete surfaces. Quite often they are used for cutting a variety of materials (metal, concrete). The grinder (with a circle diameter of up to 150 mm) is considered a compact device. It is easy to use for sanding even in hard-to-reach places. The advantages of such devices also include their versatility. That is, an angle grinder can handle almost any product, for this you just need to change the grinding disc.
On a note! Grinders (angle grinders) cannot be used on surfaces made of wood. Also, it is not recommended to use them for a long time, without interruptions. Otherwise, a banal overheating of the engine may occur and, as a consequence, the device will fail.
- Straight.
Ideal for precision polishing work. These straight grinders are also suitable for engraving and cutting small layers of workpiece materials. The advantage of such devices is their compactness and lightness. They can even be used with one hand.
- Tape.
The working surface of such a grinder is a tape of sandpaper. It is fixed between the rollers. Suitable for primary grinding work. For example, it can remove a layer of varnish or paint from the material being processed, or level a surface made of wood.
- Eccentric.
Suitable only for finishing. Can be used to sand a variety of materials such as wood, plastic, metal.
- Vibrating.
Used for both finishing and initial processing of the material. You can use this type of device for grinding extremely flat surfaces.
- Brush.
Ideal for sanding wood. She can polish parquet, remove varnish and outdated paint from wood. Not suitable for metal, concrete or stone products.
- Delta is grinding.
It is used to perform precise work. Such devices are used to grind corners on window frames, protrusions on furniture. Suitable for treating cavities.
- Polishing.
It is a narrow-profile tool. It is not used to perform primary processing of materials.
Multifunctional (MFI). Belongs to the class of multifunctional instrument (MFI). Such a device combines the capabilities of polishing, vibration, and delta grinding devices. Interchangeable attachments of this device allow you to process any type of surfaces that are made of different materials.
First of all, it is necessary to select a grinding machine according to the type and specifics of its activity and the tasks for which it is purchased. To carry out large-scale, serious repairs, which involves finishing work, you should select for yourself an orbital, pneumatic, vibration or eccentric sander. If it is necessary to make finishing, then you can purchase a cheaper and lighter model, for example, a surface grinder.
Specifications
There are many popular models of grinding machines on the market, which differ in their technical characteristics. It is worth noting that when choosing such a power tool, you also need to pay attention to its technical characteristics. There are only 4 parameters common to all grinders:
- The amount of energy consumed.For household, occasional use, it is best to choose a device with a low energy consumption.
- Power consumption. It is the main criterion for choosing a grinder. After all, the level of performance of the device depends on the power indicators. The power level can vary in the region of 400 W - 3 kW. For work with products made of stone or concrete, it is recommended to purchase an apparatus with a power of more than 2 kW.
- Dimensions, weight. The convenience of using the power tool depends on these indicators, as well as its ability to process surfaces in hard-to-reach places. Heavy and massive power tools are not suitable for performing precise work, in this case it is better to use renovators.
- The size of the working surface. The larger the working surface of the grinder, the more comfortable it is to use it when processing large-area products.
In the event that sandpaper is used for processing in the machine, then you need to pay attention to its graininess. Simply put, the lower the grit value of the sandpaper, the finer the finish will be. For primary processing of materials made of metal, concrete or stone, it is preferable to use coarse sandpaper.
If a grinding machine is selected that, during its operation, involves the use of discs, then it is necessary to pay attention to the indicators of its diameter. The larger the circle diameter, the larger the machining area, as well as the depth of cut. In diameter, circles are:
- Small (diameter less than 150 mm);
- Medium (150-200 mm);
- Large (diameter is more than 250 mm).
In modern models of grinders, the discs can be easily replaced. When choosing an eccentric sander, it is recommended to pay attention to the spindle size. It is marked with a special label, which consists of a letter (usually the letter M) and a number. The most popular option is the M14 spindle. However, keep in mind that some grinder manufacturers may use other marking standards to identify the spindle.
Choosing the best grinder in 2020
How to choose a grinder, which company is the best tool, what to look for and what mistakes to avoid when choosing such a device? There are many different factors to consider when choosing a grinder. As previously described, first of all, it is necessary to pay attention to the indicators of its power, as well as dimensions - these are one of the most important criteria for choosing such a machine. However, taking into account the recommendations of experts, one should not forget about the presence of all sorts of additional functions that popular models can be equipped with. It is also recommended to pay attention to the country of origin.
For example, the presence of an additional handle allows you to reduce the vibrations emanating from the device, which greatly simplifies the process of performing work.
The dust collector (which is presented in the form of a special container) collects dust and various debris generated during the operation of the machine.
Battery models are mobile tools. They can be used in those places where there is no electrical connection, for example, in a summer cottage. Devices that are equipped with a speed stabilization system and an inrush current limiter do not allow the disc to decelerate under heavy load, which significantly improves the surface finish.
Dremel 3000-2 / 25 Engraver
The Dremel Engraver is a versatile, multifunctional device that can handle the work of a sander and router. In addition, thanks to the use of this device, it is possible to engrave on the work surface. This device is equipped with a 130 W motor.
The Dremel Engraver can be used to clean surfaces or seams. Also, this device is perfect for a car, performing work with metal surfaces. With its help, they can be engraved.The buttons for starting and adjusting the speed of rotation are conveniently located on the surface of the device body, which greatly simplifies the process of performing work. The maximum speed of the device is 33,000 per minute.
Benefits:
- Ergonomic handle that does not slip in the hand;
- The ability to use a variety of attachments;
- It is a multifunctional tool;
- Light weight (550 grams);
- A special storage case is included with the device.
Disadvantages:
- For complex work, the engine power may not be enough;
- Cost (5 930 rubles).
LBM Wortex CAG 1812
The device Wortex CAG 1812 angle grinder has a wide range of applications. It can be used for a wide variety of jobs, both as an angle grinder and as a material cutting tool. Equipped with a replaceable handle that can be attached to the left or right side. This significantly increases the criteria for convenience when using this tool. This device does not operate from the mains, but from a removable battery (accumulator). Thanks to this, the Wortex CAG 1812 angle grinder is a mobile device that can be used in those places where there is no possibility of connecting to the electrical network. The maximum disc diameter that can be used with this angle grinder is 125 mm.
Advantages:
- Battery powered;
- Large number of revolutions (8,000 revolutions per minute);
- Light weight (1.6 kg.);
- Low cost (3 467 rubles).
Disadvantages:
- Over time, the battery capacity decreases, and, therefore, it will need to be changed;
- Engine power may not be sufficient for tough, complex work.
UShM Interskol UShM - 150/1300
Equipped with a powerful 1.3 kW electric motor. Thanks to the high power of the electric motor, at maximum speed (8,500 rpm), this power tool can be used for a long time. UShM Interskol UShM - 150/1300 is equipped with a replaceable handle, which can be installed in three different positions. The maximum disc diameter used is 150 mm. This device is powered by the mains and equipped with a power button lock.
Advantages:
- Low cost (3,030 rubles);
- A large number of revolutions;
- Equipped with a high power engine;
- Can be used for a long time to perform complex work.
Disadvantages:
- Large weight (2.5 kg);
- Due to the large dimensions of the device, it is not always convenient to handle surfaces that are in hard-to-reach places.
Belt sander Mekkan MK82605
It is, according to buyers, one of the best professional tools of high build quality. Not suitable for grinding large surfaces. The Mekkan MK82605 belt sander can be used for regrinding large parts in production. She also perfectly sands small, small parts. The tape size of this device is 533x75 mm.
The design of the Mekkan MK82605 belt sander does not allow it to be used for long-term surface grinding work. This is due to the fact that its body is made of plastic.
Advantages:
- The presence of an additional handle;
- Equipped with belt speed control;
- Equipped with a power-on interlock;
- The kit includes a dust collector;
- Low cost for instruments of this type (average price is 3,500 rubles);
- The power of the device is 1010 W.
Disadvantages:
- Suitable only for small jobs.
Eccentric sander VORTEX ESHM - 125E
The textured body makes it easy to use. When carrying out surface treatment, the level of vibrations emitted by the VORTEX ESHM-125E eccentric grinder is minimized. This power tool is well balanced, thereby reducing the level of stress on the hands while working.
On the VORTEX ESHM - 125E eccentric grinder the on / off button is reliably insulated from dust penetration.This significantly increases the service life of the device. The number of revolutions of the disk is 14,000 rpm. The sheet is attached to the surface with Velcro.
Advantages:
- Inexpensive (average price is 2,320 rubles);
- A special dust collector is included with the device;
- Equipped with adjustable disk rotation frequency;
- Equipped with an additional handle and a lock against accidental activation.
Disadvantages:
- Low power of the device (450 W);
- The maximum disc diameter is 125 mm (difficult to machine large surfaces).
Makita GD0600 straight grinder
A sander from one of the best Makita power tool manufacturers, the GD0600 is a powerful tool that is perfect for grouting joints on both pipes and sheet metal. The maximum number of revolutions of this device is 25,000 per minute. This machine is lightweight, so it is perfect for delicate sanding jobs. The Makita GD0600 weighs only 1.6 kg.
Advantages:
- The presence of a blocking button from accidental activation;
- Relatively low cost for a tool of this class (5,085 rubles);
- Equipped with a collet (6 mm).
Disadvantages:
- Electric motor power (400 W);
- Creates a loud noise during operation.
LBM Einhell TC - DW 225
It is a hand-held household electrical equipment. However, despite this, this model is popular and even advised by many professionals for surface sanding. LBM Einhell TC - DW 225 is designed for grinding plastered surfaces. It is used during renovation work when there is a need for leveling, as well as smoothing ceilings or walls. This power tool is used at the finishing stage of wall or ceiling treatment, just before painting. Equipped with a large diameter grinding wheel (225 mm).
LBM Einhell TC - DW 225 is equipped with a speed control system. The revolutions can be fixed at several speeds - at 600 and 1500 rpm. For ease of use, this tool is equipped with a special telescopic bar. Thanks to its use, it is possible to sand surfaces located at high heights. Directly on the grinding wheel there are special holes through which the dust generated during work is sucked in by the hose and sent to the vacuum cleaner connected through the fitting.
Advantages:
- Equipped with an economical motor (600 W);
- The presence of an effective air cooling system for the engine;
- Due to the possibility of using a large-diameter disc, the duration of work on large surfaces is significantly reduced;
- Equipped with a two-way disc rotation regulator;
- Relatively low cost for tools of this type (11 135 rubles).
Disadvantages:
- The length of the network cable (4 meters) may not be enough when carrying out internal work in large rooms.
Comparative table of technical characteristics of grinding machines
| Name (Description) | Power indicator (W) | Grinding wheel dimensions used (mm) | Revolutions (rpm) | Speed control function | Price, rub.) |
|---|---|---|---|---|---|
| Dremel 3000-2 / 25 Engraver | 130 | Nozzles are used | 33000 | Not indicated | 5930 |
| LBM Wortex CAG 1812 | Not specified | 125 | 8000 | Not indicated | 3467 |
| UShM Interskol UShM - 150/1300 | 1300 | 150 | 8500 | Not indicated | 3030 |
| Belt sander Mekkan MK82605 | 1010 | Used tape (533x75 mm) | Not indicated | there is | 3500 |
| Eccentric sander VORTEX ESHM - 125E | 450 | 125 | 14000 | there is | 2320 |
| Makita GD0600 straight grinder | 400 | - | 25000 | Not indicated | 5085 |
| LBM Einhell TC - DW 225 | 600 | 225 | 1500 | there is | 11135 |
The main purpose of grinders is to sand surfaces. Depending on the specifications of the grinder, it can be used for a wide variety of surfaces. When choosing such an electrical device, it is necessary to pay attention to the power of its engine, indicators of the number of revolutions per minute.It is also necessary to select the device based on your needs.
For household needs, you can take an inexpensive, simple budget model. For permanent professional use, for example, in construction, it is better to choose a model with an increased power rating (more than 2 kW). If you are using the model of power tool described in this review, or using a grinder of another model, share with us your opinion of the device in the comments.
