Create an ideal surface for varnish or paint is impossible without the grinder.Today, for this purpose on the market you can find several different types of sanders, each of which is good in its own way.For example, even high-quality and expensive belt sander will not be able to provide an ideal surface for painting or under the stain as opposed to the eccentric, that's it for this was created.In fact, how to select DISC SANDERS, no special difficulties, even though a huge range of different brands.Important, before you choose the type of eccentric sander, to determine for themselves what it is to be the main parameters and additional functions.
- main parameters eccentric sander
- Power ESHM
- type ESHM
- rotation speed ESHM
- oscillation amplitude ESHM
- diameter dish ESHM
- Weight ESHM
- Additional features eccentric sander
- Adjustment of turns
- Option dust collector
- can be connected to a vacuum cleaner
- second handle
- Starting current limitation
- indicator efforts clicking
- Optional mounting abrasive
For those who are going to perform the first grinding surface with eccentric sander, it is necessary to clarify the following.Eccentric sander is designed for polishing , coarse and fine grinding . In practice, in most cases it is only used for polishing and fine finishing with a further lacquer or paint the surface.This narrow focus is due to machines feature of her work.The principle of operation is a reciprocating circular motion of the grinding wheel, and this is achieved quality processing.
main parameters eccentric sander
When selecting eccentric sander (ESHM) will have to immediately determine how often it will be used.If from time to time and for short-term work, then you can take when you buy a budget option.But if the load on the tool will be frequent and quite large, then you can safely take a professional ESHM.Of course, if the tool is purchased for himself and so long served, it is possible to look professional without hesitation ESHM.However, for professional Sander price will be much higher than normal.
determine whether it is a common or a professional grinder, it remains to deal with the characteristics of the ESHM.Without it will not be possible to determine what the best of all possible sander range you need.All specifications can be divided into two categories.The first category - a performance that determine the quality and efficiency with some eccentric sander.These include the power amplitude of the oscillations, speed of rotation of the abrasive wheel diameter, weight, and power tool embodiment.The second category - the extra features machines that provide convenience and comfort of working with the tool.Additional features include adjustable rev version of a dust collector, can be connected to a vacuum cleaner, the second shift, starting current limitation, the power indicator of depression.
main characteristic of any power tool - it is his power.And the eccentric sander is no exception.That it should first consider when choosing a sander.High power ESHM tool allows for longer and with greater efficiency.Besides, on this parameter depends on the quality of work performed, the rotational speed of the grinding plate, and the weight of the machine.
eccentric sanders Power range from 160 W and up to 900 watts.But from low- and high-power ESHM can be counted on the fingers.The most common sander with power from 300 watts to 600 watts.The most popular segment ESHM with a capacity of 300 - 600 W uses Sander Bosch .When you select should pay attention to ESHM with high capacity.Here, if the difference in power of 20 - 50 watts, the specific differences as processing will not.But if the difference is 100 watts or more, preference should be given a more powerful tool.Quality of work, duration and lifetime ESHM be high.
For ESHM using different energy sources, depending on this, there are several types of eccentric sanders.It can be an electric machine powered from the mains or battery power, and can be sander using compressed air.This diversity allows for ESHM and where there is electricity, and where it is not.Choosing one or the other option, you must understand clearly what and where to use ESHM.
If electric sander increasingly less clear, a bit of air to be told.Grinding machines Eccentric air is mainly used on an industrial scale as it requires installation of additional equipment in the form of a compressor or compressed air cylinders.These are ESHM perfectly in the garage, service station or in the shop for furniture production.Their main advantages are low weight, it is only from 600 g to 1000 Also, a small number of moving parts.Since using compressed air, there is no need in the motor, respectively, then there are fewer parts.This affected both the weight and the useful life.To all this light weight allows for long and comfortable to use the tool itself.One of these manufacturers is the company ESHM Dynabrade, with its orbit sanders Dynorbital .
rotation speed ESHM
This option eccentric sander is directly related to its capacity.The quality of the work and the user experience is dependent on the speed of rotation.But there is one important point.When buying usually try to choose the machine with high revolutions, believing that the higher the better for the job.Here only applies more performance than the quality of work.Very high speed ESHM suitable for roughing the surface, but for the perfect sanding required low speed.
With speed related and another feature that should be taken into account.It consists in that the rotation speed is lower, the higher the power machine.For example, Sander bo6040 company Makita has a capacity of 750 watts, while its rotation speed is only 1600 - 5800 rev / min.At the same time Sander Bosch GEX 125-1 AE has a capacity of 250 W and a rotation speed of 7,500 - 12,000 rev / min.When selecting ESHM need to be aware of this feature and focus on what, for what purpose will be used by the machine.Is this sander with high turnover for roughing or grinding machine with low speed for the finish grinding.
oscillation amplitude ESHM
next parameter that affects the quality of the surface treatment and depending on the speed of rotation, the oscillation amplitude is or as it is called eccentric stroke sander.As noted above, ESHM perform reciprocating circular motion.If the rotational speed largely affects the performance, the amplitude of motion of the sanding pad meets just for the quality of processing.
In fact, the amplitude of oscillation and rotation speed are related.It is the combination of these two movements and allows for high-quality grinding.In the market model with an amplitude of from 2 mm to 5 mm.The lowest amplitude polishers have DVT.In the present picture shows movement of the grinding plate eccentric sander, you can see how, depending on the amplitude of vibration is changing the quality of the surface treatment.
Important!It should be noted that for some air ESHM reciprocating created using special arms-baits.Depending on which set the lever, so will the diameter of the orbit sanding.
diameter dish ESHM
Operational Performance eccentric sander besides power also depends on the diameter of the grinding plate.Everything is simple - a large square plate allows you to quickly process a large area at a time.The most common sizes are the diameters of 125 mm and 150 mm.But you can meet non-standard sizes of 50 mm, 80 mm, 90 mm or 115 mm.While Sander and is intended only for the treatment of flat surfaces, small diameters soles allow you to do grinding corner joints.
Custom sizes sanding pad - a great rarity.Produce are only a few companies, and among the entire range of eccentric sanders on the market can be found just a few instances.Prominent representatives ESHM small diameter dish are Rupes sander TA 50 and Metabo SXE 400 .
purchasing ESHM, in many cases it is sufficient to look at the name of the model to determine the diameter of the plate.Most manufacturers indicate the size there.For example, eccentric sander Interskol ESHM-150 / 600E .Looking at the marking, you can immediately determine that the diameter of plate 150 mm, and the power of the machine 600 watts.But do not be superfluous to look into the passport or ask the seller.Since Sander Makita BO5031 in its name does not contain such data.
As previously noted, the weight of the eccentric sander is directly dependent on its capacity.The point here is only in the engine.The more powerful it is, the harder the machine.Weight does not directly affect the quality or performance of work.However, this parameter is important for a comfortable wizard.Thus ESHM large weight is harder to handle vertical surfaces and ceilings.For the treatment of horizontal surfaces, this parameter has little effect on the comfort of working with him.
Additional features eccentric sander
In contrast to the above-described characteristics of eccentric sanders, further to a lesser extent affect the performance and quality of work.But the presence of those or other additional functions allows you to work more comfortable.
Today, manufacturers are trying to maximize their ESHM provide useful functionality.These functions include the adjustment of turns, the various embodiments of dust collectors, the ability to connect to a vacuum cleaner or an adapter for a second shift, limiting inrush current (soft start), light force presses.Let us consider each of them in detail, since the choice of some of these functions may play a decisive role.
Adjustment of turns
Today, almost any power tool has this feature and ESHM no exception.Even in the air ESHM it has rotation control, implemented in the form of leverage.For random orbit sanders rotation control allows the use of a tool, for coarse as well as for fine grinding.That in turn allows you to save money on buying a few sanders.
Option dust collector
The result of the grinding machine is not only a flat and smooth surface, but quite a large number of fine dust.Of course, manufacturers have taken care of a dust bag for her.That's just everyone has his own, and not always comfortable.
So, for example, Makita Sander is equipped with three variants of bags - plastic, paper and tryapchanym.But polishers Bosch only plastic dust collectors with the possibility of replacing them with a vacuum cleaner.When buying ESHM is always consider the option of a dust collector, which will be convenient for everyone in particular.Dust collector himself, of course, does not affect the quality of work, but also when cleaning do not want too much bother.
can be connected to a vacuum cleaner
As noted above, the removal of dust from the different models and manufacturers ESHM runs as a separate dust collector, and with a vacuum cleaner.This approach is justified.After all the dust has small dimensions and it is not long enough, and often have to clean, while you work.Therefore, some manufacturers have made it possible to connect a vacuum cleaner.Unfortunately, this possibility is not at all models of eccentric sanders.But professional ESHM such as Bosch sander , RUPES or Makita, a connection to a vacuum cleaner has a mandatory basis.
Of course, there is another way to connect to a vacuum cleaner, a special adapter.Other manufacturers ESHM, realizing the importance of the connection, decided to leave their models grinders unchanged and began to produce special adapters.Therefore, when purchasing a cam machine, knowing that it will have to work long and hard, you should ask the seller about the connectivity.
specifics of the eccentric machine provides the pressure on her from above.Even the shape of the tool is entirely directed it.But quite often the trigger and an electric motor are a little bit away from the center, which creates certain difficulties at work.In this regard, manufacturers have added additional ESHM handle which compensates the pressure on the other side and makes it easier to machine.The handle itself may be removable or fixed.It all depends on the model.For example, a sander Makita BO5040 / 5041 has a removable handle at the same time Bosch PEX 400 AE equipped with additional fixed handle.Special mention should be polishers DWT .They have equipped their ESHM side handles that provides added convenience when working with vertical surfaces.
Starting current limitation
The result of the sander must be flat and smooth surface.But since the start and before the start of the wizard does not always have time to adapt and make the necessary efforts.As a result, the surface can be damaged, leaving unwanted furrows that have sand cleanly.Therefore, many manufacturers equip their grinders soft-start system.This approach is justified, especially if the wood sanding machines eccentric.The whole point of vibration, which occurs immediately after turning on the machine.A soft start allows ESHM gradually reach operating speed and adapt to them the master.
indicator efforts clicking
One useful additional features for the beginner is the indicator of how hard you play.This is especially useful for those who have not yet learned to feel the power of pressure on the tool.The indicator in the case of excessive or insufficient pressure will allow it to adjust to properly perform polishing.This feature will be useful to professionals.It will assess the extent of his skill at working with ESHM and facilitate the process of grinding.
Optional mounting abrasive
During grinding work is not just a need swept away because of his abrasive wear or to reduce the grain for smoother grinding.To this simple action did not take up too much time, manufacturers have developed a number of different ways to mount the abrasive to the sanding pad.The most common is the usual Velcro .Besides it there is system Quick-Fit, providing modular replacement, but it is less popular.