Construction and finishing work is not complete without a grinder, which is an important tool. You have to often and quickly process surfaces, grinding and polishing them, and here such a tool helps out. Popular among devices is the eccentric type grinder. She has another name - orbital. Here is the ranking of random orbital sanders as of 2022. Here are collected models that have been tested by experience and have proven their reliability.
Content
Random orbital grinders are a novelty in the field of tools. They have a random trajectory of motion in a circle. In 1976, Festool from Germany presented a device in which it was possible to achieve both rotational and reciprocating motion. After 6 years, the company produced an industrial model of the grinder.
An eccentric type (orbital) grinder performs surface quality like a circumferential grinder. But its performance is comparable to devices with reciprocating motion. The movement of the circle of the device occurs in a random order, the trajectories do not repeat. Such a constructive solution eliminates the constant grinding of the same places and the appearance of scratches on them.
The English name for this type of device is "Random Orbit Sander" - an orbital sander moving along an arbitrary path.
Each tool of eccentric type (orbital sander) is made under certain conditions. It has a certain set of technical characteristics and is designed for a certain cycle of work and load. To choose the right grinder, consider the following factors:
The most worthy entry-level eccentric grinders are presented in this section with a price category from 6 to 8 thousand rubles.The main sources of information are customer reviews that they leave on the forums, or on different sites, and partially selected from various rating categories. The overview is not available for pneumatic grinders, since working with such a tool requires a compressor with the appropriate properties.
Makita BO5031 is a modern orbital machine designed for domestic purposes. In the domestic market, a well-known Japanese brand is popular because it is assembled in America, and not in the Republic of China. The BO5031 drive has a working surface of 125 mm, has a power of 300 watts. Equipped with 8 dust extraction holes.
The tool is equipped with a high-speed adjustment of the movement of the engine with an interval of 4 ÷ 12 revolutions per minute and a frequency of 8 - 24 thousand / min, a span of 2.8 mm. The eccentric sander is almost silent, reliable, complemented by pads consisting of rubber material, which are located on the switch button and the body itself.
The next disassembled Makita BO5030 grinder is the same BO5031, only with the absence of an easy start system and an electric rotation controller. Other features of the tools are completely the same. The technique is used as an auxiliary device and for carpentry cleaning.Price differences in network online stores between the first and second units are from 600 to 900 rubles.
The manufacturer suggests that you read the instructions (suitable for all varieties), where the plan of the corresponding modes and types of processing is indicated. According to the provided schedule, the grinding process takes place at 10 ÷ 12 thousand rotations per minute, and polishing at 4 - 6 thousand. An eccentric machine is supplied in two versions: packed in a box or in a case. In the second option, there is a letter note.
The famous domestic brand produces grinding machines, they are made in China. Manufacturers assemble cars belonging to the class of household appliances sold at an affordable price from 2600 to 3000 rubles. The machine is marked by the presence of an additional powerful mechanism for 270 W, with a typical surface size of 125 mm.
It is characterized by equipping the electrical system with a switch having 5 positions of high-speed increase and decrease in unit calls with control intervals of 5 - 12 thousand, and the oscillating frequency will be 10 - 24 thousand / min. with a sole stroke of 2.2 mm. The overwhelming majority of reviews about this device are exceptionally good, users especially note the wear resistance of the sole.
The presented model was produced at a Mexican enterprise, where units of the well-known foreign company De WALT are assembled. The grinding device is equipped with a powerful motor of 280 W, has a high-speed electric controller with a distribution area of 8 - 12 thousand circles per minute. Platform with a diameter of 125 mm, as well as a stroke amplitude of 2.4 mm. The presence of a regulator of the number of rotations and the possibility of auto-locking the power button are noted.
Users leave only good reviews, unanimously noting the positive characteristics and the low price of the grinder (slightly above 5000 rubles).
The Zubr planetary tool is marked by a low and affordable cost, starting from 2700 - 2800 rubles. Equipped with a powerful 450 W motor, the control system is electronic with high-speed rotations. The working surface is 125 mm in size, the number of rotations per minute is 5 - 13 thousand with an amplitude of movement of 2 mm. Unusual in the Zubr configuration is a system capable of removing dust deposits.
Do not pay attention to the low price, as buyers highlight only the good sides of the device in question.
The manufacturing company is based in Germany, but the concerns are located throughout Europe. The sector of application of this grinder is very wide. It allows you to process metals, wood, putty and paint coatings. The maximum power reaches 275 watts. The diameter of the surface affected during operation is 130 mm. The oscillation amplitude is about 4 mm, but this value may vary slightly.
On the Internet, the price starts from 5,000 and ends at 5,500 rubles. In this case, the buyer receives the goods in a case and with a complete set. Consumer reviews differ. Basically, there is a problem with the "plate". According to the owners, the “plate” quickly wears out and becomes unusable.
For a relatively small price, the buyer receives a device with a power of 310 W and a platform with a diameter of 147 mm. The amplitude of the sole is not the highest, namely 3 mm, but this will be enough to work on a hard, straight surface.
If we talk about the strength of the Metabo SXE 3150, then it is worth noting that the manufacturers did not save money and made the body of aluminum casting. The average price of this model is 7,700 rubles. This price does not include a case. For comfortable work, the set includes a power cable, the length of which is 4.5 m. It is very difficult to find negative reviews about this grinder on the Internet.The only problem that is mentioned is the wear of the outsole plate. Buyers note that for such a price it is better to pay attention to another model.
The manufacturer himself positions his car as a professional one. The construction is very strong. In the manufacture of the body were used the best grades of plastic. Standard power - 300 watts. But the stroke amplitude is really small - 2.3 mm. There is an electronic speed control system with a range of 7 to 13 rpm.
The main advantage of the Ryobi ROS300 is the bagless dust collector. Most consumers praise this model, mentioning the main distinguishing qualities, namely durability and dust removal system.
Among all its competitors, this grinder has good technical characteristics and an incredibly low price: from 1500 to 2000 rubles. The electric drive power is 355 W., and the platform diameter is 130 mm. The worst indicator is the stroke amplitude - 2 mm. Therefore, this model should be used only on a flat surface and not involved in serious tasks. There are very few reviews about this model on the Internet, since the car is quite “young”. Many note that for such a price, the Wert EES 125DE has excellent features and performance.
Black&Decker KA198 is a light and simple model. The price is inexpensive, does not exceed 2500 rubles. Unlike its competitors, it has a small power (260 W.), but a wide oscillation amplitude - 3.1 mm. The standard sole diameter is 125 mm. It is possible to adjust the rotation speed up to 13000 rpm. Almost all users note ease of use. This model is great for small jobs. But problems arise with the tree, as the lack of power makes itself felt.
Many eccentric sanders have the ability to force the platform to rotate. But this function can rarely be used, because the number of revolutions decreases sharply. Many fans of this function stop at the Makita BO6040 model.
Mirka CEROS 650CV is the ideal model for light tasks. It weighs less than a kilogram, but the power figures for these dimensions are surprising - 360 watts. The rotation speed reaches 11,000 rpm. Available adjustment function, which improves the quality of the work done. Disc diameter increased to 150 mm.
Light weight, slight vibrations and ergonomics make this model easy to handle. Indeed, professionals and consumers alike have declared that the Mirka CEROS 650CV has been awarded the "award" in the category of best grinder in terms of price/performance ratio. If the buyer has a limited workplace, then most often he stops at this model.
When choosing a grinder, you should pay attention to the ergonomics of the device, the level of vibration and noise emanating from it. The cost also matters, as well as how affordable the consumables for the tool are. You can find such information using the reviews of the owners of grinders, or in forum discussions.