What are the ways to unscrew a tightened nut on the angle grinder?

angle grinder, or angle grinder. a versatile tool, with which you can perform a wide range of activities. It has a simple mechanism of action, based on the rotation of the shaft by an electric motor. Necessary for cutting metal parts, polishing surfaces and grinding various materials. One of the most common problems during operation of the angle grinder is jamming of the nut that holds the disc. It is not possible to change the bit and if you apply too much force it can damage the threads, break the wrench or cause the housing to break.

As a rule, such a problem is found on angle grinders with a working surface diameter in the range of 150-180 mm. When a strong torque is applied, the disc will bite. This leads to the fact that the nozzle can not be removed with a conventional wrench, even with the application of serious physical efforts.

The second common cause is the use of a disc for the angle grinder that does not match the factory parameters of the tool. This leads to a disturbance of the whole mechanism and causes it to jam. In rare cases, the nut cannot be unscrewed if there is rust on its threads. is frequently caused by prolonged use or by storing the tool without changing the tool bit.

Important! Discs for angle grinder are available in standard sizes, diameter varies from 115 to 230 mm. The landing shaft itself is available with a diameter of 22.2 mm, with older models requires an adapter.

What is the cause of the fault??

Before you wonder how to remove the drive with an angle grinder, experts recommend to understand why the angle grinder bites the nut. It has been noticed that this problem is mainly observed in angle grinders, which have a significant disc size. It is considered a large disc over 18 cm. In the course of operation, a torque is formed. Further, when the master starts cutting, a small bump occurs. In other words, there is a force effect on the disc. If the size of the nozzle is not more than 12 cm, the impact will be negligible. If the disc is large, then the nut by inertia tightens more. As a result, it cannot be removed in the usual way. information on how to remove the disk from the angle grinder, described below.

How to remove the disk from the angle grinder if it is broken and is tightened by the clamping nut? Of course, you can try to use a special wrench for an angle grinder or a gas one. However, judging by the reviews, after making enormous efforts and spending time, the master may not get the expected result. It is easier and faster to disassemble. To do this, use pliers to completely break the disk. In view of the fact that during the work will fly small splinters, the master will need protective goggles (mask) and gloves.

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How to change the disc on an angle grinder?

Then you need to take a metal plate, the thickness of which is less than the disc. This plate will be used to grind away the rest of it. To do this, turn on the angle grinder, and the metal piece firmly clamped with pliers. After completing these steps, the nut can be unscrewed even by hand.

If a special key, which is attached to the angle grinder, is not lost, then cope with the task will be easier. Those who are interested in how to remove the disk from the angle grinder, experts advise to first fix the spindle. The disk is located on it and is pressed by the flange. It is disassembled with a wrench. To make this technically possible, the flanges are equipped with special holes into which the pins of the wrench can be inserted.

To lock the spindle, you need to press the button, which is located on the housing on the back side of the disk. During work with an open-jaw wrench, you can not release the lock, otherwise the spindle will continue to rotate. If the disc in the angle grinder turns clockwise, turn the wrench counterclockwise and vice versa. It is important that the flange gives in and moves out of place. It can now be unscrewed completely and set aside. Then remove the old disc and replace it with a new one.

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How to change the disc on the angle grinder correctly

Since the wheels for the angle grinder are consumables, then sooner or later they have to be replaced. They are fastened to the spindle of the angle grinder by means of a clamping flange (nut) with M14 thread. To unscrew it, the angle grinder must be supplied with a special wrench, which has pins on one side.

So, to replace the tool on the angle grinder, follow these steps.

  • De-energize the machine by pulling the plug out of the socket.
  • Lock the spindle of the angle grinder using the button on the front of the housing. When the button is pressed, the stopper enters the hole in the disc in the gearbox and fixes the spindle in the stationary position.
  • Insert the wrench pins into the holes on the clamping flange.
  • Hold the retainer with one hand and with the other hand turn the wrench to the left (counterclockwise) until the nut is loosened. It can then be unscrewed without a spanner and removed from the shaft. In this case, the spindle of the angle grinder rotates clockwise. But which way to unscrew the nut if your unit rotates the shaft counterclockwise? Remember: always unscrew the clamping flange in the exact opposite direction to the shaft rotation.
  • It is now possible to change the tool after removing the old one. If you notice that dirt has accumulated inside the hood, you should remove the bottom flange and use a steel brush to remove the dirt from all surfaces.

Once the above steps have been taken, the tool change is considered complete.

NovoAbrasive. Cutting and grinding disc factory

4 Ways to remove the disk from the angle grinder, if it jams ⠀ Anyone who has experience in intensive work with a grinder has surely faced this situation. Typically this will happen if the disc is jammed between the parts, it is disengaged or torn but the motor keeps turning and thus tightens the nut irreversibly. So what to do? Method 1️⃣ ⠀ Select which side of the nut to unscrew. Always burn in the direction in which the disk is wrapped. For this kind of work you need either two gas wrenches or two clamps. Then we remove the remains of the disk, use one wrench to fix the washer behind the disk, and the other to unscrew the flange. Method 2️⃣ ⠀ This method involves the well-known mastic VD-40. This, like electrical tape, can be used in all cases of life. You need to loosen the flange, wait approx. 5 hvylins and unscrew it with a wrench. Method 3️⃣ ⠀ This method is used in extreme cases where none of the others work. You can try to saw out the flange with a metal cutter and then buy a new one from a specialized store. Method 4️⃣ ⠀ How to change the disc on the gearbox to avoid disassembly of the tool and intensive impact on the tool? To do this we crush the wheel as much as possible, dismantle the protective cover of angle grinder and take out the stake filling with a pair of scissors.

4 Ways to remove the disc from an angle grinder if it becomes jammed ⠀ Anyone who has had intensive experience with an angle grinder has probably experienced this situation. This usually happens if the disc is jammed between the parts, it stops or breaks and the motor continues to rotate and thus tightens the nut irreversibly. So what must you do?? ⠀ Method 1️⃣ ⠀ Determine which way to unscrew the nut. It is always necessary to roll in the direction in which the disk rotates. For this kind of work you need either two wrenches or two clamps. Then destroy the rest of the disk, use one wrench to fix the washer behind the disk and unscrew the flange with the other. This method is based on the well-known grease VD-40. It’s like duct tape, it can be used in all situations. You have to spray the flange, wait approx. 5 minutes and unscrew it with a wrench. Method 3️⃣ ⠀ This method is used in extreme cases when all other methods fail. You can try to saw the flange with a metal saw and then buy a new one at a specialized store. How to change the disc on an angle grinder to avoid having to dismantle the machine and putting too much strain on it? To do this, crumble the disc as far as possible, remove the protective hood of the angle grinder and remove the remnants of the disc with a hacksaw.

4 ways to remove the disk from the grinder if it’s jammed ⠀ Everyone who has experience of intensive work with a bolt cutter has probably experienced such a situation. It usually happens if the disc is jammed between the parts, it stops or breaks and the motor continues to rotate and thus tightens the nut irreversibly. ⠀ So what to do ⠀ Method 1️⃣ ⠀ Figure out which way to unscrew the nut. You should always wrench in the direction that the disk rotates. For this kind of work you will need either two gas wrenches or two clamps. Then break up the rest of the disc, use one wrench to fix the washer behind the disc and use the other wrench to unscrew the flange. ⠀ Method 2️⃣ ⠀ This method involves the use of the famous VD-40 grease. It, like duct tape, is applicable in all cases of life. You have to spray the flange, wait about 5 minutes and unscrew it with a wrench. ⠀ Method 3️⃣ ⠀ This method is used in extreme cases when no other methods help. You can try to saw the flange with a metal hacksaw and then buy a new one in a specialized store. ⠀ Method 4️⃣ ⠀ How to change the disc on a bolt cutter to avoid disassembly of the tool and intensive impact on it? To do this, crumble the disc as far as possible, remove the protective cover of the angle grinder and remove the remains of the wheel with a hacksaw.

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TYPES OF CLAMPING NUTS

Some manufacturers have paid enough attention to the problem of a tightened nut in the angle grinder and eliminated it. For example, the DeWALT sander has an advanced mechanism and a pressure nut that can be quickly and easily unscrewed, even after prolonged use.

As the manufacturers of bucking machines, the developers of clamping nuts have not stood still, either. The renowned German company AEG has modernised the clamping nut. As a result, using the nut of this company, you can forget about inconvenience, the nut is unscrewed quickly and easily, at any time of need. And you no longer have to puzzle over how to get the stalled disc, or even its remnants. It’s that simple: The AEG clamping nut has a special thrust bearing in it that prevents the nut from seizing up on its own and jamming the disc.

In addition to AEG, there are several other brands that produce and use special quick-clamp nuts.

  • Those that still need to be unscrewed with a wrench, but not as long and difficult
  • And the more advanced ones, which, even after the disk jams, will allow you to unscrew them with finger movements.

How to place the disk on the angle grinder correctly?

To place a disk correctly on the angle grinder, it is worth noting first that the disk is installed on the spindle of the angle grinder with a special clamping flange with M14 thread. Let’s take a closer look at how to remove the disk from the angle grinder. In order to unscrew the disk from the angle grinder, you must first remove the flange. Especially for such purposes, the manufacturers complete angular grinder special horn wrench. It has a specific shape. pins located on the horns of this spanner are inserted into specially provided holes on the flange.

To unscrew the flange, lock the spindle. To do this, clamp the lock, which is usually a button on top of the body.

and pressing, the cotter pin is placed in the hole of the gear drive disk, and this in turn prevents it from rotating. Then insert the cotter pins into the holes on the flange that are provided for this purpose, press the latch and simultaneously turn counterclockwise to dislodge the flange from its seat. If the manipulation was successful and the flange yielded, you can unscrew it by hand and put it aside.

Now dismantle the disk. Often, in the process of intensive work with the tool on the inside of the protective cover is formed a certain plaque from small particles of metal and abrasive material. For optimal, stable and durable operation of the angle grinder, remove the bottom flange and clean the guard with a steel brush.

Tips

If you had to use a gas wrench, you must remember about the very strong shoulder of such a wrench and the amount of force applied to the parts of the “angle grinder. If you are not careful, you can tear the spindle lock or damage the gearbox.

All manipulations with the disc of the angle grinder must be performed with the power supply completely disconnected (the plug must be removed from the socket). Any accidental pressing of the start button will cause the electric motor to start, and the rotational speed of the rod is very high. Injuries in this case can not be avoided.

Working with an angle grinder involves a lot of waste in the form of metal or wood chips and dust. Wear safety glasses before starting work: they will protect your eyes against flying splinters of the cutting wheel itself if it jams or destroys.

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Goggles are not only needed as a safety feature. If the eyes are protected, you can pay more attention directly to the work of the “angle grinder”, ensure proper cutting or selection of the correct mode of operation. This allows the most efficient use of consumables (cutting-off wheels), minimizes the occurrence of abnormal situations with jamming of the disc or its destruction.

A mask that completely covers the face is an excellent substitute for glasses. it is especially important for craftsmen with impaired vision, who wear dioptric glasses on which protective goggles cannot be put on.

Disc on the “angle grinder” may be set to “on itself” or “on itself” depending on the direction of rotation and, accordingly, the flow of swarf. There is no fundamental difference in operation. However, the “angle grinder” with the wheel “on itself” when jamming the disk tends to jump out of the cut forward, not on the one who is using it. This is particularly important with high-powered tools, but a small angle grinder can also be very dangerous.

A specially installed extension cord with a plug socket, preferably without grounding, will help to quickly stop the machine from running out of hand.

“Angle grinder”. a tool of rough treatment and strive to get a perfect surface as a result of its work is not worth it, the main thing is to make a rough cut, which later, if necessary, can be processed in other ways.

To work without clamps and jamming it is better not to cut long metal workpieces to the end, leaving 1-2 mm of metal in the cut: it will be easy to chip them afterwards, it will have practically no effect on the quality of the workpiece.

It is better to place small workpieces in a vice or clamp them to a workbench or other reliable horizontal surface. The quality of the cut and safety depends on the tightness of the hold-down.

To change the disc on the angle grinder it is necessary to unscrew the fixing washer.

Fixing washer, as a rule, comes with special grooves, and you can unscrew it only with the appropriate wrench, which usually comes with every angle grinder.

On some angle grinders as fasteners are installed usual nuts, which can be unscrewed with a horn wrench.

To unscrew the fixing washer, an angle grinder key must be installed in its grooves.

On the other side of the angle grinder, you should press the locking button to lock the rotor in a stationary state.

Next, you need to turn the key counterclockwise.

This is how you unscrew the fasteners and replace the old disc with a new one.

After installing the new disc in place, first hand-tighten the securing washer, and at the end it is tightened with the wrench.

Now the angle grinder is “charged” with a new disc, and you can get to work.

What to do if the disc is jammed on the angle grinder?

Everyone who has experience in intensive work with the angle grinder probably at least once, yes encountered with this situation.

Usually it happens if the disc is jammed between the parts, it stops or breaks, and the motor of the angle grinder continues to rotate and thus irreversibly tightens the nut.

So what can you do if the disc jammed on the angle grinder?

Each master has his own secrets.Especially for you, we have learned a few of these and are now sharing the most common ways out.

Remove the disk from the angle grinder

First, figure out which way to unscrew the nut.

The flange should always be rolled in the direction in which the disk rotates.

For this type of work you will need either two wrenches or two clamps.

Here’s what to do: destroy the remains of the disk, one wrench fix the washer behind the disk, the second unscrew the flange.

remove the disk from the angle grinder

This method involves using the famous grease VD-40.

It’s probably like duct tape, it’s applicable in all cases of life.

You need to spray the flange, wait about 5 minutes and try to unscrew it with a wrench.

Remove the disk from the angle grinder

This method is used in extreme cases.

When none of these other methods help, you can try to saw the flange with a tool like a hacksaw for metal, and then buy a new one at a specialized store.

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