How to tighten a nut on a grinder. What side the grinder is unscrewed?

How to unscrew a nut on a grinder?

In order to unscrew the disk from the grinder, you first need to dismantle the flange. Especially for such purposes, manufacturers complete the grinder with a special rye key. It has a specific form. The pins located on the horns of this key are inserted into the specially provided holes on the flange.

You need to unscrew the disk rotation. T. E. If the disk rotates clockwise, then you need to unscrew the nut.

Why is the extension of the fixer nut

Almost every foreman, who has to work periodically with a grinder, came across the fact that the nut on the cutting disk begins to drag on. Before trying to unscrew it with a key, you need to figure out why the latch begins to tighten.

During operation, the disk on the grinder can spin up to 12,000 revolutions per minute. In the process of contact with an iron or stone surface, it faces a rather serious resistance. Because of it, the speed of rotation begins to decrease at times. At the same time, the rotor continues to rotate in the same way as before. It is because of this that the nut can clamp so hard that it cannot be promoted with a regular key to unscrew the Ushm discs.

We twist the disk in the opposite direction

This method is good because you can unscrew the stop flange without a standard key and even with a broken spindle fixer. Beginning locksmiths often believe that if the stopper has broken, then the nut will not be unscrewed by conventional methods. This is an erroneous opinion, since you will not even need the key that comes with the Ushm.

Photo: Avatars.MDS.Yandex.NET most often the disk clamps with improper operation or an application of great efforts

The essence of the method is that the grinding or cutting circle must be given short.Term sharp rotations in different directions. To do this, you need to put on dense working gloves, it is better leather, and several times sharply hit the working edge of the consumable. If it is not possible to do the first time, you need to repeat the operation. Usually there are enough 2-3 such blows to unscrew the locking nut of the grinder.

A stuck angle grinder nut is solved by Louise Wells

Photo: Avatars.MDS.Yandex.NET The easiest option is to tap on the disk with your hand

Disruption of fixation with a perforator or drill

With severe “biting” the fixing nut, it can be disrupted using a perforator or electrode in a detection mode. The advantage of this method is that the Ushm does not suffer at the same time, and the refinement of any tools is not required. For a breakdown into the tool, a drill is inserted into 6 mm. It should be rested on the edge of the clamp, and with short.Term inclusions to disrupt the connection. In this case, the grinder spindle should be recorded. This is perhaps the best way if the clamp does not succumb to removal.

tighten, grinder, side, unscrewed

Conclusion: Difficulties in replacing a grinding circle

Before removing the grinding circle, it is better to try to promote all the details and remove the extra objects that may be an obstacle. This facilitates the process of replacing a grinding circle.

tighten, grinder, side, unscrewed

How often you need to change a circle for a grinder, it depends on how many often you use your grinder. If you often use it, then your wheel will wear out faster, and you will have to change the grinder more often.

Try not to allow faults and change the grinding circle in time. To protect yourself and not endanger your health, make sure that your power source is not connected before any manipulations.

Difficulties in replacing the wheel arise when nuts, washers, screws and jam or rust. In this case, you will have to experience several ways to remove the circle and make a lot of effort. It is also important to consider that grinding circles can be very fragile. If you do not want breakdowns and deformations, you must be extremely careful when you attach strength to remove them. Do not forget that certain grinding circles are suitable for specific metals. The choice of improper grinding disk is one of the causes of breakdowns and faults.

Step No. 3

Unscrew and remove the unnecessary residues of the consumable

The obstacle is removed, now you can unscrew the nut and remove what remains of the detachment of the disk. The nut is unscrewed easily, in most cases it can be done with the hands, without the use of the tool.

Remove the cut.Out disc non.Standard method

The disks on the grinder are fixed with a nut that is twisted in the same direction in which the spindle of the power tool is rotated. And when the rotation stops sharply, self.Tightening of the fixing nut occurs.

In order to then unscrew it, you need to force a force that arose with the wedge, and this is simply impossible to carry out a “native” or gas key.

Unscrewing the nut is not enough strength, and the key will jump off

You need to do otherwise, Namely, remove the cutting disk from under the nut, and then unscrewing the latter nothing will interfere.

How to unscrew if you drag out?

Remember! You need to unscrew the disk rotation. T.E. If the disk rotates clockwise, then you need to unscrew the nut.

The easiest way to unscrew the disk fastening is to put the key, and then hit several times with a hammer with average force.

If this did not help, there are alternative methods of solving the problem:

  • Warm the mounting mechanism using a burner, which will lead to the expansion of the metal. As a result, the design will become moving;
  • With the help of a small metal plate, the disk to the nut itself. Continue to grind until its surface is in contact with the nut and begins to twist it;
  • Insert a steel pipe into the nuts of the nut, use it as a lever to unscrew a protracted nut. You can not apply too much effort so as not to disrupt the thread;
  • Lubricate the thread with machine oil, for example, WD-40. Wait 3-5 minutes, and then try unscrew the mount with the key. Using this method, you can get rid of rust inside the planting shaft;
  • If you need to remove a circle that have not been used for a long time, you can start twisting the fasteners even more. After that, try to weaken it again;
  • A boiled or rusted thread on the Ushm can be treated with turpentine, vinegar, white spirit or solvent of rust. After processing, you need to wait for at least 30 minutes, and then try to twist the nut again.

If a situation arises when you are left without a key, you can cut down a stuck fastening with a chisel or stuck it with a second grinder with a disk for metal. After that, you will have to restore the thread, and also look for a spare nut. If the circle still does not give in, you can try to combine different methods. For example, treat the shaft with machine oil, and then start to unscrew the nozzle with a lever or tap the mechanism with a hammer.

If the Bulgarian disk was squeezed: effective ways to solve the problem

During the operation of the power tool at any time, an abnormal situation may occur (engine overheating, drill or disk breakdown, jamming, etc. P.). The most common problem when working with an angular grinding machine (Ushm) or a grinder is a clip of a cutting or grinding disk. In today’s review of Housechief, we will talk about how to unscrew the clamping nut in case of jamming.

We twist the disk in the opposite direction

This method is good because you can unscrew the stop flange without a standard key and even with a broken spindle fixer. Beginning locksmiths often believe that if the stopper has broken, then the nut will not be unscrewed by conventional methods. This is an erroneous opinion, since you will not even need the key that comes with the Ushm.

The essence of the method is that the grinding or cutting circle must be given short.Term sharp rotations in different directions. To do this, you need to put on dense working gloves, it is better leather, and several times sharply hit the working edge of the consumable. If it is not possible to do the first time, you need to repeat the operation. Usually there are enough 2-3 such blows to unscrew the locking nut of the grinder.

Heating the fixing flange

This is one of the simplest and most effective ways to replace a cut.Out disk on a grinder when there is no special key nearby. The stopping nut must be heated with a construction hairdryer, a gas cutter or pressing it strongly to a wooden churbak. After the flange heats up enough, it can be quite simply squeezed with a hand protected by a welding glove. However, in this method there is one drawback: there is a risk of damaging the plastic housing of the Ushm.

What are the ways to unscrew the protracted nut on the grinder?

Ushm, or Bulgarian. A universal tool with which you can perform a wide range of actions. It has a simple mechanism of action built on the rotation of the shaft by an electric motor. Necessary for cutting metal parts, polishing the surface and grinding of various materials. One of the frequent problems during the operation of the grinder is the bite of the nut that holds the disk. This does not allow you to replace the nozzle, and with a strong effect, you can damage its thread, break the key or break the body.

As a rule, such a problem occurs on a USM with a diameter of the working surface in the range of 150-180 mm. When a strong torque occurs, the disk bites. This leads to the fact that the nozzle cannot be removed with a regular key even with the application of serious physical efforts.

The second common reason is the use of a disk for a grinder, which does not correspond to the factory parameters of the tool. This leads to a violation of the process of the entire mechanism and jamming. In rare cases, the nut is not amenable to unscrewing when rust on its thread. Most often this is found with prolonged use of the tool or storage without changing the nozzle.

Standard guide for replacing a disk on a grinder

To begin with, let’s look at the standard guide to replace the disk with a grinder, which is spelled out in the instructions:

tighten, grinder, side, unscrewed
  • It is necessary to de.Energize the tool, pulling out the fork from the outlet;
  • Then you need to put the grinder on a flat surface, turn the disk to yourself and press the spindle rotation button;
  • After that, you need to rotate the disk until it reproaches the spindle. Without releasing the spindle button, you need to take the key and unscrew the nut that holds the disk;
  • After unscrewing the nut, it is necessary to replace the disk;
  • Then it is required to turn back the nuts on the grinder.

Tighten the nut with a key when replacing a disk on a grinder does not need to. After replacing the disk, you just need to turn on the grinder for 30 seconds and check if there are backlash, whether the disk is beaten, etc. D. Only after checking can you start working with an angular grinding machine.

How to remove a drive on a grinder

First of all, it is necessary to carry out preparatory measures, namely:

  • Turn off the grinder from the network. Otherwise you will be shocked or there will be a short circuit;
  • Press the spindle rotation button;
  • When holding the Stop.Stop button, you need to unscrew the flange nut.
tighten, grinder, side, unscrewed

It will also be useful to care a thorough inspection of the grinder body. Perhaps, due to jamming, some component failed. This will allow you to find out as accurately as the problem with the grinder.

How to use a grinder correctly?

Not only the convenience of work depends on the correct installation of the cutting disk, but also your safety. The grinding wheels on the one hand have a brighter image with information about the area of ​​application and technical features. A washer is installed on a brighter side, which is fixed by a nut when twisting. Breakage of the discs themselves for the Bulgarians occurs when the efforts are exceeded.

When asked which side you need to install a circle, most experts are inclined to the opinion that there is no particular difference in this. If you install the front side to the outside, you will not have problems with the replacement of the circle in the case of an unforeseen situation. With a breakdown or replacement. On the front side of the disk with a bright picture, it is easier to unscrew the nut, unlike the abrasive texture.

When installing a disk with a ring to a grinder, risks of breakage are reduced due to uneven location. In this case, the load is distributed evenly, which avoids deformation of the circle. When you fix the circles outward, you can always find out which circle is currently used. This is important when working with different types of materials. For example, you can not use concrete disks to cut metal. Such a neglect of safety rules can result in injuries for a specialist. Installing a circle on a grinder with the front side to you guarantees convenience and safety.

Also, before starting work, study the instructions for the detachment disk and the Bulgarian itself. Often manufacturers indicate the correct location of the circle for working with metal, wood, finishing materials. The direction of rotation of the circle does not play a special role. You can use the tool from yourself or to yourself how convenient you will be one of the proposed options.

If you use a grinder in the direction of “from yourself”, then be prepared for the spark in your direction. Make sure that you have foreseen all means of protection, and you can protect yourself from sparks entering the eye, on the skin.

If you work with circles in the “on yourself” position, then it is possible to exclude the flow of sparks, but the chances of getting injuries are increasing. This happens in the case of a circle of a circle for a grinder. Therefore, there is no single rule for handling the apparatus. It all depends on your professionalism and potential risks that can happen when working with a grinder. If special requirements are spelled out in the instructions for the grinder, then we strictly adhere to them. Otherwise, we work as you are convenient.

If your disk was clamped, there was a failure in the work, all the manipulations with the replacement of the consumable are carried out in the shutdown of the grinder. With a slight press on the start button, the tool motor is launched. It works at high speed, so it is difficult to avoid injuries and accidents.

Which side to put a disk on a grinder

Disks for the grinder have two sides. Front and wrong side. Often it is on the front side of the disk that a metal ring is located for a clamping nut, as well as the label of the manufacturer with different information related to the disk characteristics. It shows the diameter, the maximum speed of the disk, and other information.

I want to pay special attention to a metal ring, so to speak, a frame for a rod of a grinder on which a nut is wound. Often the metal frame is located outside the disk, it is not on the inside. Therefore, if the disk is installed by the metal ring inside, then the pressing nut will attract it so strong that it will be problematic to unscrew it in the future to replace the disk.

You can avoid such a situation if you use cardboard lining for a nut. They can be cut from a piece of dense cardboard or paper. Thus, the nut will not stick so hard. It should be noted that the risk of spontaneous promotion of the nut increases. Therefore, I would recommend not to use various lining there, but to install the disk on the grinder correctly, namely, only with a picture and a ring outward.

Video: The nut is not unscrewed on the grinder what to do

Also FOCUS on measurement, such as disk diameter. In no case can you exceed the size of the protective casing on a specific tool model. The disk size range is usually represented by the following diameters: 115, 125, 150, 180 and 230 mm. The most common diameters of 125 mm. And 230 mm. They are optimal for most types of work and the capabilities of the tool itself.

Bakelite.Based grinding wheels. The most popular discs 6.00 mm thick. This parameter depends on the overall disk diameter. The dependence is this: the larger the diameter of the disk, the greater its thickness and vice versa.

Making A New Angle Grinder Nut

How to put a disk on a coffee grinder?

To properly place the disk on a grinding machine, it should first be noted that the disk is mounted on a grinding machine spindle using a special threaded flange M14. Let’s take a closer look at how to extract a disc from a coffee grinder. To unscrew the disk from a grinding machine, you first need to remove the flange. Especially for these purposes, manufacturers complete grinding machines with a special open key. He has a special form. The pins located on the horns of this key are inserted into the specially provided holes in the flange.

To unscrew the flange, we fix the spindle. To do this, we fix the latch, which is usually the button in the upper part of the case. When pressing the finger is inserted into the hole in the gearbox, which, in turn, prevents its rotation. Then insert the studs into the specially provided holes on the flange, clicking on the latch, turn counterclockwise and move the flange in place. If the manipulation was successful and the flange is open, you can unscrew it manually and put it aside.

Now delete the disk. Often, in the process of intensive work with the tool from the inside of the protective casing, a certain coating of small particles of metal and abrasive material is formed. For the optimal, stable and durable operation of the grinding machine, remove the lower part of the flange and clean the body with a steel brush.

How to loosen angle grinder disc nut

To install a new disk, after cleaning the case, perform the following actions:

  • Replace the lower flange;
  • We put a special gasket on top (if the gaskets are not provided, they can be cut independently. The best material will be cardboard or tin).
  • Install a disk;
  • Put a second gasket;
  • Install the upper flange from above;
  • Wrap the upper flange with your hand in the direction opposite to rotation of the grinding circle, holding the disk;
  • Then press the lock button again and rotate the flange with your hand until you feel the resistance;
  • At the last stage, we finish the commit using the same open key. To do this, insert the key into the holes and scroll a little more. Do not forget to tighten it for no more than a quarter of turning, since the disk will become unsuitable for use if the flange is blocked excessively.
  • Be sure to rotate the disk for at least 30 seconds before starting work.

After all the steps you can take, you can safely continue to do the job.

One of the most frequently asked questions about the installation / dismantling of the corner grinding machine: “From which side I should put the disk on a grinding machine?””.

Usually inexperienced masters ask this question. Is it possible to install a circle on the other side? So. Firstly, if the disk is not flat, but, for example, a petal, you cannot install it incorrectly if the petals are located incorrectly, just turn the case and holding the handle on the grind. That is, the question disappears by itself.

If the circle is still flat, then you should FOCUS on its label, the so.Called “shirt”.

If the grinding machine rotates by itself, the disk must be equipped with a “casing” from the outside, if the disk is turned away from itself, then it should be equipped with a “shirt” inside.

If you do not adhere to this algorithm, there is a high probability that the disk will fail very quickly or deform immediately.

What should I do if I am stuck on a grinder?

Anyone who has experience intensive work with a grinder should have experienced this situation at least once.

This usually happens if the disk is clamped between the details, it stops or breaks, and the Bulgarian engine continues to rotate and, thus, tightens the nut.

So if you bite a disk on a grinder?

Each master has his own secrets. Especially for you, we have learned several of them, and now we will talk about the most common ways to get out of the situation.

Method number 1 to extract a disk from a mill

First find out in which direction to unscrew the nut.

The flange should always be composed in the direction of rotation of the disk.

To do this, you will need either two gas keys or two clamps.

Here’s what you need to do: we destroy the rest of the disk, fixing the puck located outside the disk with one key, unscrew the flange second.

Method No. 2 to extract a disk from a mill

This method involves the use of known VD-40 oil.

This is probably an island applicable in all cases of life.

You need to sprinkle the flange, wait 5 minutes and try to twist it with a wrench.

Method No. 3 Remove the disk from the grinder

This method is used in extreme cases.

Method No. 4 to extract a disk from a mill

How to replace the disk with a grinding machine to avoid disassembly and strong impact on the tool? To do this, cut the disk as far as possible, remove the grinding machine and close the rest of the circle with a saw disk.

Do all the above manipulations, do not forget about security measures.

Take care of yourself and the safety of your tool.

Accept the rule that replacing the cut.Off and grinding circles on a grinding machine is carried out in working gloves, and the work itself should be performed in special protective glasses.

Why is the nut on the grinder. The main reasons

You can bite the puck on a grinder for several reasons:

  • If you delayed the disk with a key, what to do, it is categorically not recommended;
  • If the Ushm disk is damaged;
  • If the disk is jammed on the grinder.

In addition, as it was noticed more than once, the puck on the grinder is more often bite, the larger the diameter of the disk. For example, when using 125 disk, a nut is much less common than when using 180 or 210 disks.

This is due to a high torque. At the time of the disk on the metal, the force is much higher. Therefore, the washers on grinds with large discs are bitten most often.

Measures to exclude jamming

So that the latch does not jam, it is necessary to adhere to the following recommendations:

  • Before using the grinder between the head and the disk, you need to lay the puck. It will prevent the jet jamming even with prolonged use of the tool.
  • It is necessary to correctly install the working circle so that it stands exactly. Its front part should be placed on the support flange and not touch the nut.
  • It is necessary to monitor the tightening force. Do not tighten the nut so that it does not jam during the load.

Many Ushm owners are faced with a situation where the disk lock begins to clamp. To solve this problem, you need to figure out which way to unscrew the disk of the grinder and in what ways you can eliminate the clamp. Using the recommendations above, the owners of the tool will easily cope with the annoying problem.