Orbital eccentric sander

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ESM are classified according to several criteria:

• machines with which you can work on wood or metal;
• ESM, which work from the electrical network or from batteries;
• professional models and devices for household needs;
• miniature units with speed control and large pneumatic ESM.

ESM are capable of making surfaces perfectly smooth. The quality of the "orbital" operation is achieved with the help of the oblique-rotational movement of the canvas itself. At high speeds (more than 10,000 thousand per minute), a large amount of energy is generated, which is transferred to vibration. It is transformed into a force impulse, thanks to which the polishing process takes place. The eccentric needs a counterweight, which is necessary to smooth out excess vibration.

Consider the most popular ESM manufacturers.

• The Metabo company produces inexpensive and compact units.
• Bosch manufactures models of large (over 650 watts) and medium power. The company's products are of good quality and many different additional options (rotation control, speed, etc.). This technique is most often acquired by professionals. It is quite expensive, but it is very reliable, and also has a long service life.
• ESHM from the Makita company are not inferior in quality to the German units from Bosch. The devices are ideal for work in service stations and garages. The dust removal system is especially effective on the models. Each model has its own design features. Some ESM are equipped with a speed regulator (up to 6 positions).

Now let's take a look at some of the distinctive details and functions of the devices.

• "Orbitals" for professionals are equipped with special relays that control a constant speed during operation. In this case, the torque automatically switches to afterburner mode, while the reserve power of the engine is used.
• The starting current limiting block is used for several reasons: when it is required to reduce the load, as well as to avoid a rumble at the start of the engine. This device is found exclusively on professional models.
• Adjusting the sole brake is necessary for a quick stop.
• 90% of ESHM have a socket that allows you to connect a vacuum cleaner (sometimes a vacuum cleaner replaces a special PVC container with a bag or paper bag).
• Professional tools are often equipped with a cover around the eccentric assembly.
• The D-arm makes it possible to work more comfortably.
• A switch with a latch is most often found in expensive professional models.

Also ESM cannot be installed permanently. This is usually necessary when you need to work with small format products. If there are volumetric depressions or depressions on the workpiece, then the ESM will not penetrate there, there is also the possibility of damage to the edges by the rotating element of the machine.

Selection Tips

Most inexperienced people do not know how to choose the right eccentric sander.

Experts recommend paying attention to the following characteristics:

• Power: the higher this figure, the greater the performance and range of application of the device. With a lack of power, the tool will not be able to machine rough surfaces of parts. The value of this characteristic takes values ​​in the range from 165 to 950 W.
• Vibration: This value affects the grinding accuracy and difficulty in balancing the device during operation. It occurs as a result of uneven distribution of mass over the surface;
• Rotation frequency: this parameter determines the speed of the working disk and the number of oscillations produced per 1 revolution. In the basic configuration of the grinder, the frequency is adjusted depending on the fineness of the surface to be treated.
• Amplitude of motion: the lower this value, the faster the grinding is done. When processing thin parts, it is necessary to purchase a tool with an amplitude of 2-3 mm. For polishing large parts, the value of this characteristic increases to 4-7 mm. With a large amplitude, the vibration intensity increases and the grinding accuracy decreases.
• The diameter of the work sole: the performance of the eccentric sander directly depends on this parameter. Large diameter soles require a powerful electric motor to work.
• Weight: Affects the sanding comfort. Lightweight devices are more comfortable to hold in the hands in the absence of a supporting surface. But heavy tools are less susceptible to vibration.
• Dust removal: if the surface of the orbital sander is not cleaned from dust and dirt in time, the grinding mechanisms can deform, leaving scratches on the surface of the workpiece.

The stores offer eccentric sanders from the following manufacturers:

• Metabo: the tools from this company are distinguished by their high power ratings. The disc of the sander makes up to 11,000 revolutions per minute. Its vibration amplitude is 2.7 mm. The working diameter of Metabo devices is no more than 125 mm. The average weight of the grinders is 1.4 kg. The electric motor is powered from the mains. To connect to an outlet, a 2.9 m cord is supplied with the instrument.
• Bosch: Orbital sanders from this company have an ergonomic rotary handle and a fan to cool the motor structure. Bosch tools develop from 7,000 rpm. The average weight of the devices is 2 kg. The working disc diameter is 125 mm. The range of motion of the sole is 5 mm.
• Dewalt: Eccentric sanders from this corporation have discs that are stable and balanced to prevent vibration propagation. The vibration amplitude of the work sole is 2.4 mm. The maximum number of disc revolutions per minute is 12,000. The average weight of Dewalt grinders is 1.5 kg. The power consumption of most models is 280 watts.
• Makita: Devices from this company have pivoting handles and a housing with rubber elements. They are equipped with dust and dirt protection mechanisms, but do not have a soft start function. The power of Makita grinders is 300 watts. The working diameter of the disc is 125 mm. The average weight of the structure is 1.4 kg.

When choosing an eccentric sander, it is important to pay attention to the price of the tool. The average cost of grinding devices ranges from 6,800 to 10,000 rubles

Types of wood sanders

Unfortunately, there are practically no universal tools that can help out a carpenter in any situation. When processing workpieces with a complex configuration, it is necessary to select a separate device for each specific operation. In the simplest cases, even a grinder with a nozzle can help out the master. If you are seriously engaged in the production of wood products, then you need to be able to understand the intricacies of operation and the device of wood sanders of different models.

Varieties of wood grinders:

1. Belt sander.
2. Vibrating instrument.
3. Brush hand sander for wood.
4. Renovators are tools with increased functionality and a variety of attachments for polishing, cleaning, trimming, slotting and grinding.
5. Orbital sander.

Belt sander for wood

These practical devices have a rectangular surface and work like a planer. A belt sander is often used in the initial stages: cleaning the old paintwork and the initial processing of the board. The tool is equipped with a debris outlet to which a bag is attached or a vacuum cleaner is connected. The tape is fixed on the sole; when turned on, it starts to rotate at the speed set by the master.

Brush sander for wood

In functional tools of this type, the working part is not a sandpaper, but a coarse metal brush. It is used to prepare furniture facades at the initial stages of repair, remove unnecessary coating, and process large areas (parquet, floor from boards). The device is not suitable for fine polishing. The brush sander is often used by manufacturers of retro objects to age wood.

Vibration sander for wood

Polishing or sanding with this handy handheld equipment is done with a sandpaper attached to a flat work sole. The working tool produces, when switched on, reciprocating vibrations with a frequency of up to 25,000 rpm. The working amplitude is up to 5 mm and is chosen by the joiner depending on the type of processing. For example, for fine polishing, the vibration sander works with an amplitude of 1.5-3 mm. The power of this type of grinder is 150-600 W.

Eccentric sander for wood

The orbital trajectory of the working tool allows for more delicate operations in comparison with tape devices. The eccentric wood sander has a round base for attaching removable discs with different grain sizes or felt discs up to 150 mm in diameter. The number of revolutions reaches 13000 rpm. The power of the eccentric devices is up to 650 W, the vibration speed is 24000. The devices are equipped with debris and dust removal through the holes in the working sole.

Wood angle grinder

The second name for such devices is delta sanders. They work according to the vibration principle, but they have functional features. The triangular shape of the working part resembles the sole of a household iron and allows you to process hard-to-reach "dead zones" that are always formed when working with a rectangular or round nozzle. The angle grinder has a low speed, but allows high-quality polishing. Small triangular nozzles are used on renovators to process small ridges, corners and indentations.

How to use the grinder correctly

Features of using a belt sander

The belt sander is best suited for large, flat surfaces.

First of all, you need to put on the tape. The easiest way to do this is when the car is lying on its side. Having previously snapped off the mount, put on the tape, taking into account the direction of travel - indicated by the arrow on both the tape and on the rollers of the machine. This is necessary so that the seam on the tape is positioned correctly. Otherwise, the tape may either tear or damage the surface instead of sanding. Then click on the mount.

The tape in the car always moves in one direction, respectively, in the same direction you need to work with the tool - pressing it tightly to the surface, move it towards you. The wood with a belt sander must be processed along the grain. Otherwise, deep furrows may develop. It is not necessary to press unnecessarily on an already heavy tool - instead of increasing productivity, you can overheat and thereby damage the belt.

To expand the functionality of the belt sander, you can use the frame, stationary mounts (vise), corner stops. It is the tape tool that can be fixed in a stationary vise and move not it, but the surface to be processed (for example, a board, a block). Such a fastening of a tool for grinding small parts is especially important. Also, when the machine is stationary, it is very convenient to sharpen grooves and rounds.

Another way to use the band tool is when the machine is lying on its side. Its advantages are that a right angle is formed in this position.

Video: how to use an eccentric (orbital) machine

When preparing the machine, pay attention to how dusty the job is expected to be. And if there can be a lot of dust, it is better to immediately connect the vacuum cleaner, since many models have such an opportunity. The work is relatively clean - a dust collector will do

A respirator will keep you healthy

The work is relatively clean - a dust collector will do. A respirator will keep you healthy.

Important! During its operation, it is necessary to periodically check the dust collector and avoid overfilling. Otherwise, dust will go out from all holes. The abrasive disc is attached to the circular platform of the machine with Velcro - it is simply applied and pressed by hand

You just need to make sure that the holes on the disc line up with the dust holes on the platform.

The abrasive disc is attached to the circular platform of the machine with Velcro - it is simply applied and pressed by hand. You just need to make sure that the holes on the disc line up with the dust holes on the platform.

When processing a plane with a machine, you need to firmly press the platform against it. You need to keep the machine level so that the platform does not press against the surface with its edge - otherwise there is a risk of ruining the surface with scars. In order not to remove unnecessary things, this is especially true for bodywork, it is better to often check the surface with your palm for roughness.

As you work, check the dustiness of the nozzle, change it in time so that the work does not go idle when the grain is "clogged" and the roughness is no longer peeled off.

Video: how to use an eccentric sander for bodywork

There are many ways to use grinding machines. This is preparation for body painting, and floor treatment, and polishing of wooden parts (even children's toys), and even polishing. The result of the work, of course, depends on the skill, the perfection of the skills of the person

But no less important is the quality of the instrument, as well as how correctly it is selected and correctly used.

Good luck with your work!

Operating tips

When using the orbital sander for works in workshops and furniture shops, users must comply with a number of rules for the operation and safety of this equipment:

• do not use power tools in hazardous areas;
• do not expose the instrument to wet conditions and rain, as water can damage the instrument itself;
• handle the power cord carefully;
• carefully attach the dust collector to the tool;
• before plugging the product into the outlet, check the "On / Off" power button, which should be in the "Off" state;
• when working with a grinder, it is necessary to securely keep balance;
• when working with the device, you must use protective goggles, a respirator, safety boots, headphones or a helmet;

• the user must have a good attitude to the tool, it is strictly forbidden to use worn out or torn sheets of sanding paper;
• for ease of use, the device has an additional handle; you need to monitor the cleanliness and dryness of the handles of the device;
• regularly clean the orbital sander every time after use;
• keep the power tool out of the reach of children and non-trained people.

In the next video you will find a review and test of the Makita BO5041K orbital sander.

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No. 3 - Bosch GEX 150 Turbo

Price: 26,820 rubles. The second creation of the Germans from Bosch and the third place in the rating is the GEX 150 Turbo grinder. Its main advantage is its 600 W power, which, together with a rotation speed of up to 6650 rpm, ensures efficient and high-quality grinding of various materials. In the presence of a dust collector, to which you can connect a vacuum cleaner and get rid of dust in the course of work. Bosch GEX 150 Turbo is one of the most powerful and efficient grinders in the world. Yes, not the lightest, but the weight plays into the hands, so together with the anti-vibration system, the shaking is reduced to naught. Yes, not the quietest, but quite ergonomic, pleasant to work with, and most importantly - durable.

Bosch GEX 150 Turbo