A fairly frequent problem in those who use the Bulgarian ESM, a cut-off disk broke and tightly pushed the clamping nut. And the most interesting thing is that unscrew the nut is sometimes practically no possibly a special key of the ESM, nor gas, nor something else. And if it managed to do this, there are tremendous efforts and spent time. I will show you an easy way to save your time and effort to unscrew this nut of the Bulgarian without unnecessary difficulties.

Easy way to unscrew the nut grinding ush

To unscrew the nut first of all, it is necessary to break off the root of the remains of a broken cutting disk.

You can make it very simply pliers. Do not forget about the means of protection: glasses and gloves, as the various small Oskol flies.

In the end, there must be this:

Now we need to find a piece of metal, which will be the thickness of the thinner of the Bulgarian disk.

We turn on the ESM and this piece stead the remnants of the disk between the nuts.

After all the nuts inside the nut is unscrewed, not the key, but even with your hands.

Here is such a very simple and very fast way. In addition, safe for bearings of the Bulgarian, since if the nut is not unscrewed - most people take a hammer immediately in the hand and begin to try to unscrew the nut with tapping.

What to do to such a no longer happened?

In order to no longer fall into this situation, it is possible before clamping a new disk, put a plastic, paper or cardboard washer under the nut. And in this case, the nut can always be unscrewed without any problems.

Cutting stones or discs are not always able to find proper quality and therefore they become a frequent problem. Of course, the human factor is not excluded. But now, if you got into a similar story - you know what to do. To new meetings!

Cellular machine - universal power tools. With it, it is possible to cut steel profiles and wood, process concrete and stones, produce grinding and vindriate work, sharpen hacksaws. And for each operation there is a specific circle. For example, a thin cutting circle for the grinder cannot be grinding the surface - it will break quickly. How to put the disc on the grinder when sharp and break the circle or the transition to another type of work?

According to the operation manual, the disk replacement on the Bulgarian needs to be performed as follows.

1. Pull the power tool cable from the outlet.
2. Press the spindle rotation button.
3. Holding the button of the brandy, with the help of a horn key, unscrew the flange nut. Wash the wrench for the ushm you need to rotate the disk. If it is difficult to press the button with one hand, and the second to work the key, ask someone from your loved ones to you.
4. Remove the old disk from the spindle tree.
5. Install a new disk.
6. Fasten it with a manual nut or with the help of the same universal key. At this moment, the second hand needs to hold the stopper. Highly tighten the nut should not.
7. Turn on the grinder in the network of seconds by 30 at maximum turns. If the disk rotates freely, without beats, not a hitch protective casing, you can start working.

The package of USM should include a horn key. There is often a bad quality key to cheap grinders. It can quickly break down (however, this happens with the tools of leading manufacturers). In the end, the key can be simply losing . How to install the disk on the grinder in this case, without having a suitable tool at hand?

The most reliable way is to just buy a new key. You can take a standard, under a certain flange for AMM, or sliding, with the possibility of adjusting sponges. But the keys for Bulgarians are not sold in all building stores, and find the right tool is not easy. We bring to your attention a few tricks, with the help of which you change the disk on the grinder without a universal key and save your nerves and money.

How to change the disc on the grinder without a key?

Method 1. Take advantage of the gas key. An adjustable key for pipes clap nut and cautiously unscrew it without applying great efforts. Disadvantage: You can smire the nut, break the rotation lock.

Method 2. Make a grinder homemade key. To do this, you will need a long nail (at least 100 mm). It is necessary to cut the hat, the edge and give the nail P-shaped form. To bend it in such a way that the "tool" racks fall into the flange openings. If the nut is tightened tightly, insert any metal bar between the stands of the nail and, holding it with both hands, rotate the design in the direction of the circle movement. At this time you need to press and hold the spindle lock button. The method is safe, but takes time and additional tools - hacksaws, vice, hammer.

Method 3. Cutting chisel. Before changing the disk, you can process the spindle shaft with WD-40 liquid and wait at least 15 minutes. Then put the tip of a thin chisel under the tilt to the hole of the flanged nut and gently catching up over the entire surface of the hole with a plumbing hammer. Sooner or later, thanks to the random climb, the nut is stronner, and it will be possible to unscrew it manually. The disadvantage of the method is that you can damage the holes and spoil the flange.

Method 4. Heat nut. If it is difficult to unscrew the nut with your hands, you can warm it a little gas torch or autogen. Split flange needed in gloves, so as not to burn. This is the most risky methods. You can steal bearings and oil in a gearbox of an angular grinding machine.

Finally, I want to mention several important points relating to the replacement of the disk on the grinder.

The main thing, when changing the disk on the grinder, do not break the security technique and make all manipulations with the tool off from the network.

A universal element of any builder is a corner car or simply speaking - Bulgarian. With the help of a grinder, you can crop steel, tree or processing a stone or concrete, as well as produce grinding work or sharpening blanks. For each operation there is its own nozzle and cannot work on the material around the material that is not intended for this. For example, it is impossible to grind the surface with a subtle cutting circle. In order to replace the nozzle need a special key, but how to do it without the help of the key?

How to change the disc on the grinder without a key

Method 1

Use the usual gas key. You need to grab the nut with a recruiting gas key and cautiously unscrew it without making great efforts. In this way there is a big drawback - you can mix the nut or break the rotation lock. Having too much effort.

Method 2

You can make a simple homemade key for the grinder. You will need a long nail for this, which you need to sprinkle a hat, and bend to bend so as to give a nail p-shaped. The nail must be bent so that the ends of the workpiece fall into the flange rack. If the nut is spinning very tightly, then you can enhance the design with a metal bar, with which you want to rotate your key. This way does not damage the grinder design, but will require a time and tool for the manufacture of such a key.

Method 3.

Cutting with a chisel. You need to handle the spindle shaft usual WD 40 and wait 15 minutes so that the work went easier. After that, you need to put a chisel under the tilt of the surface into the hole of the flange and the tapping movements gradually unscrew the mount. In this way there is also a flaw - you can damage the hole or spoil the flange of the grinder.

Method 4.

You can heat the nut with a gas burner. In this case, you should have to unscrew it with your hands. Be sure to use heat-resistant gloves after you heat the workpiece. This method is the most risky, as you can overheat oil in the tool or damage the gear reducer.

What is important to remember when working with a grinder

We are for security and therefore once again remind you of ordinary rules when working with this tool:

1. Install the circles on the grinder only suitable according to the instruction size. Relieve yourself from the characteristics of the tool and set the circles less than or the same as provided by the manufacturer. Otherwise, you risks to lose your hands or other limbs.
2. On the protective disk, with time, a slope is formed due to permanent operation. It is necessary to clean it from time to time.
3. Remember, if the circle rotates clockwise, the nut also needs to be unscrewed clockwise.
4. Before trying to remove the disc from the grinder, be sure to disconnect the tool from the network!

Well, for those who know about the safety equipment and is already able to work with a large number of tools, we recommend reading the article on how to make

Modern Bulgarians (USM) are equipped with a mass of a variety of nozzles. Designers try to ensure that the successful use of their developments for grinding, cutting and polishing of heterogeneous materials. But the change of nozzles is not manually, but using special fixtures.

On the peculiarities of choosing keys for the Bulgarian Talk to our article.

Features of application

Use the key for the Bulgarians most often have to be removed and change the disk. And such a need arises mainly due to the appearance of cracks in the disk itself. Before applying the key, you must stop the equipment and de-energize it. Failure to comply with this rule threatens big trouble.

After de-energizing the device, the locking nut twisted the key. Sometimes it happens that the disk is flared to the limit, and the standard tool does not help. Then you can use a powerful gas key. The remaining part of the disk can be cut in conventional metal hacksaw; The locking nut after replacing the disk element is returned to its original position.

How to choose?

The key used when working must provide a quick and reliable disc clamp, so the tool is made of increased strength steel, only with such a condition it will work for a long time.

• the presence of a relaxed start function (the prevention of jerks during startup);
• the ability to lock the brushes at voltage jumps;
• the option of automatic spindle balancing (reduction of beats when used);
• the ability to hold the start button is a very useful feature with long work.

Some wizards prefer to use a universal key to work with a grinder. This device can tighten and weaken the threaded flanges not only at the ESM, but also in the stroke, and even in the circular saw.

The main part of the key is made of instrumental steel. Very good if the handle will have a polymer coating. The universal device has a movable work part, dimensions are adjusted very smoothly. Their range may vary in fairly wide limits.

• Judging by customer reviews, attempts to find such a tool in corporate trading networks and in large electrical stores usually do not succeed. The key for the Bulgarian is advisable to search in the construction markets and in stores selling hardware.
• When choosing, pay attention to the fact that the device from one brand may not approach the grinding machines of other manufacturers. To minimize the risk, you should take the nut as a sample with you. You can make such a mechanism and independently based on the horic key: in this case, the workpiece is drilled and the rotten fingers weld.
• On the handle of a high-quality adjustable key, the steel brand is indicated. If the manufacturer does not make it, it means that it is impossible to trust it.

• It is undesirable to acquire the mechanism even with a weft well.
• The diameter of nuts (in millimeters), which can unscrew the factory key, is indicated after the letters "KR".
• Before buying it is worth checking the tool in hand - whether he will not slip.

It is not worth buying goods from companies of the questionable level that offer too low price.

About how to make a universal key for the Bulgarian, learn in the video below.