Orbital grinding machine. Review, choice, recommendations

The machine is a grinding orbital eccentric designed for surface treatment of various materials. Most often, with this tool, wood or metal is peeled. In this case, the surface becomes perfectly even, without any flaws.

The device of the grinding machine

Any orbital grinder has a motor, a dust bag and a work sole. In addition to the instrument is a regulator, with which you can control the speed. There is also a button on the handle. Near the dust collector, in turn, is a switch for changing the course of the eccentric. When the device is turned on, the sole starts to rotate around its axis. In addition, it is slightly displaced from its center, thereby the vibrating grinder is able to quickly process the working surface.

Recommendations for buyers

When choosing a quality grinding machine, you need to carefully study its characteristics, specified in the passport. The main parameter is the power of the device. On average, this figure is in the region of 300 watts. Then a disk is checked that has a vibration grinder. It is usually produced with a diameter of 125 mm. In principle, this is a normal size, which will quickly clean the surface. For large drives, a high power device is required. Next, we need to study the parameters of the amplitude of the oscillations. Usually it is 2.8 mm.

The speed control must be present. It will allow you to change the power depending on the material. Also, manufacturers, as a rule, indicate the number of revolutions that the disk makes. This parameter directly depends on the capacity of the device. The parameter of 10000 rpm is considered normal. The minimum values must be within 4000 rpm.

Additionally, manufacturers indicate the frequency of oscillations. On average, it is 20,000 vibrations per minute. The minimum values must be 8000 oscillations per minute. Some models of grinders have a soft start function. In many cases, it will be useful, so it will only be a plus. The possibility of connecting the device to a vacuum cleaner is also welcome. The case of the grinding machine plays an important role. In order for the tool to be easily held in the hand, it must be rubberized.

Any qualitative orbital grinding machine (pneumatic) is equipped with a lock. It will allow you to work for a long time without holding the start button. The compactness of the grinder is generally welcomed. Her weight should be within 1.4 kg. In this case, the hand will not get tired of work quickly.

Grinding machines of the company "Metabo"

These devices are distinguished by good power. At the same time, they have excellent speed indicators. The disk that comes with the product is made of high quality, and it is capable of withstanding heavy loads. The indicator of the oscillatory circuit is within 2.7 mm. In addition, it should be noted that there are many compact models that many will like. Despite the fact that the company "Metabo" is not very well known, it produces quite good grinders.

Model "Metabo FSX 200 Intec"

The diameter of the reference disc in this model is 125 mm. The idling speed is 11,000 per minute. At the same time, the nominal power consumption is within 240 V. At maximum load, the orbital grinder produces 9,000 rpm.

The oscillatory contour of this model is 2.7 mm. The weight of the grinder without mains cable is 1.3 kg. The kit includes a dust collector, a filter and a plastic carrying case. In addition, a cable with a length of 2.8 meters is included in the kit. Are such orbital grinders (market prices) about 6200 rubles.

Grinding machines produced by the company "Bosch"

The company "Bosch" has long time to prove itself from the positive side. Of the features of the grinders of this brand can be distinguished high performance. In addition, we note the good quality of all parts.

Thanks to the fan, engine cooling takes place quickly. All this allows you to work with the surface for a long time without the risk of overheating. The use of the instrument as a whole is very convenient. This is largely due to the unique rotary handle, which is installed in many models. You can also highlight a very high-quality dust removal system. At the same time, the device will remain clean all the time. The control is good, the speed regulator is working properly.

Model "Bosch GEX 125-1 AE"

This orbital grinder has a power of 250 watts. The minimum speed is 7000. At the same time, the maximum values are up to 12000 rpm. The amplitude of the oscillations is exactly 5 mm. The diameter of the abrasive wheel is 125 mm, which is the standard size. Among other things, we can distinguish a small weight of the device (it is 1.8 kg). In general, this model can be described as economical and inexpensive. Its cost in the market averages 7600 rubles.

DEVOLT DEVICES

Grinding machines "Devolt" are distinguished by good fastening. Of the disadvantages, you can mark uncomfortable handles in some models. There are also some problems with the engine cooling system. Of the advantages can be distinguished good stabilization and excellent disk balancing. In this case, vibration from the tool is not transferred to the handle.

Also, many on the positive side characterize grinders, in which special dustproof bearings are installed. The design of many models is very interesting. The shape of the handle is quite convenient. Comfort speed control. All this allows us to work successfully with various materials.

Device "Devolt D26453"

This grinding machine for concrete has a circle with a diameter of 125 mm. The amplitude of the oscillations is within 2.4 mm. The idle speed is 7000. The maximum values of this parameter are up to 12000 rpm.

In addition, we can distinguish good moves at the level of 24000. The power of this model is 280 watts. This orbital grinder is sold together with a dust collector. The weight of the instrument in assembled form is 1.6 kg. The cost of this model on the market is 9,000 rubles.

Grinding machines "Makita"

The company "Makita" is engaged in the production of power tools for a long time. All grinders are manufactured with a rubberized casing and are very comfortable.

In addition, they have a protection system for dust removal. The fan that cools the engine works well. Also in many models, manufacturers have installed rotary knobs for ease of use. Mounting for sanding sheets is good. Change the working equipment is very fast and without problems. In addition, it should be noted that the control of grinding machines "Makita" is very comfortable. With the help of a special wheel, the speed can be changed quite easily.

Model "Makita BO5041"

This grinding machine for concrete works perfectly. The power of the model is 300 watts. The diameter of the disc that is mounted on the tool is 125 mm.

There is an electronic regulator and the possibility of connection to a vacuum cleaner. Of the disadvantages, we note the lack of a smooth start function. Of advantages, many single out the compactness of the model, as well as a small mass, which is 1.4 kg.

The grinding sole is made very qualitatively, which makes it possible to clean the surface well. In this case, on the positive side influenced by the amplitude of the movement. Since the power of the model is large, the parameters of the turns are worthy. In service this grinder is unpretentious. Dust from the surface on the part and the engine of the device does not practically fall. The cost of this model on the market is on average 10,000 rubles.

Summarizing

Considering all of the above, the most preferred is the electric orbital grinder "Bosch". It has an acceptable cost and satisfactory parameters. For professionals, grinding machines of the trade mark "Makita" are recommended. They have excellent parameters and will last for many years.