angle grinder bites the disc what to do

With open-end wrench and socket head

Grind the working surface of the 17 key to 4 mm in thickness. Grind 4 projections on the surface of the 24 mm socket so that they fit into the holes in the flange.

The open-end wrench must be placed under the disc. Put the socket head on the nut of the angle grinder and turn it with a ratchet in the direction of rotation of the wheel.

How to change a disc to an angle grinder without a key?

Use the gas key. Grasp the nut with an adjustable pipe wrench and loosen it carefully, without applying great force. Disadvantage: you can crush the nut, break the rotation lock.

Make a homemade wrench for the angle grinder. To do this, you need a long nail (at least 100 mm). It is necessary to cut off the cap, the point and give the nail a U-shape. It should be bent in such a way that the “tool” stands fall into the holes of the flange. If the nut is tightened tightly, insert any metal bar between the posts of the nail and, holding it with both hands, rotate the structure in the direction of the circle’s movement. At this time, you need to press and hold the spindle lock button. The method is safe, but it takes time and additional tools – a hacksaw, a vice, a hammer.

Tapping with a chisel. Before changing the disc, you can treat the spindle shaft with WD-40 fluid and wait at least 15 minutes. Then put the tip of a thin chisel at an angle to the hole of the flange nut and gently tap it over the entire surface of the hole with a metal hammer. Sooner or later, thanks to gentle tapping, the nut will slip off, and it will be possible to unscrew it manually. The disadvantage of this method is that you can damage the holes and spoil the flange..

Heat the nut. If it is difficult to unscrew the nut of the angle grinder by hand, you can heat it up a little with a gas burner or autogenous machine. Unscrew the flange with gloves so as not to burn yourself. This is the most risky of the proposed methods. Can overheat bearings and oil in angle grinder gearbox.

Finally, I would like to mention a few important points regarding replacing the disc with an angle grinder..

  • The angle grinder must be fitted with wheels of the correct size. It is necessary to strictly observe safety precautions and in no case remove the protective cover in order to install a disc of a larger diameter. When choosing a disc, you need to take into account the model of the power tool, its power, spindle speed.
  • Due to the disc rotating at high speed, work hardening forms on the guard of the angle grinder. Therefore, when changing a disc, remove and clean the casing..
  • Some models of angle grinder are equipped with washers to prevent the disc from jamming between the flanges. At least the support flange can be fitted with a rubber washer. Instead of factory fasteners, you can cut cardboard, rubber or plastic spacers. 2 gaskets need to be used: between the support flange and the disc, between the disc and the nut.
  • Do not forget: if the circle rotates clockwise, then the nut is also unscrewed clockwise and tightened against.
  • If you don’t want to buy a new wrench, install a Bosch quick-locking nut on the angle grinder – you can easily unscrew it by hand.

The main thing is that when changing the disc to an angle grinder, do not violate safety precautions and perform all manipulations with the tool turned off from the network..

Sometimes it happens that the disc clamps and the nut is tightly tightened from this. A simple method will help to unscrew the disc without damaging it or the angle grinder, which sometimes happens with inept attempts to unscrew.

We take two boards of thick plywood, chipboard or thicker wood and fasten them with self-tapping screws. For clarity, I drew a circle so as not to get it into the disk. The boards hold the disc so well that it is not difficult to unscrew the nut using a standard wrench, hammer or gas wrench without damaging anything.

The method is suitable for a circular saw. It does not have a stopper, like an angle grinder, so it is difficult to tighten the screw strongly. The clamping screw tends to loosen during operation, which leads to a stop of the saw blade and severe wear of the seat. After a while, the wear reaches its limiting dimensions and because of this, you have to buy a new circular. Obviously, this is due to the heating of the disk during operation. Solved the problem of loosening the screw by installing a heat-resistant paronite gasket on the saw blade and tightening the screw, locking the blade with planks.

Next is another method that will help unscrew the nut of an angle grinder.
“Victor Do It Yourself”.

Yerlan Selchanin.
Many craftsmen will not escape such a situation when tightening the nut on an angle grinder. The master very often heard stories that it is very difficult to unscrew it. The angle grinder worked for 3 years, never tightened it. But I tried to change the disk, nothing came of it, since this nut was tightened tightly. I looked on youtube how others are doing, asked my friends, used the method that this video was filmed about.

Broke the disc using pliers. Its thickness is 1.6. It was clamped in an angle grinder. He took a thin tin and turned on the angle grinder. I put a tin between the nut and grind it through. I also used an old broken disc. Its thickness is 1 mm. Broken 1.6. The old disk was also pushed between the nuts and cut out.

I must say right away, take your time with the choice of methods and means for unscrewing! Try the following.

If the disc breaks off in the cut during operation from biting, then almost always the nut is tightened tightly. Having put on the stopper (pressing the button on the side of the gearbox opposite to the disk), try to unscrew it with a standard wrench with moderate effort, if the nut does not go, then you do not need to pound on it with a hammer. In general, it is better not to apply “shock methods of work” when loosening the nut of an angle grinder. Gearbox elements angle grinder well, not for a chisel and a hammer. You can rip off the stopper, break the standard key, ditch the bearings on the gears, bend the shaft, or even split or make a crack in the duralumin housing of the gearbox – all these delights by no means cheer you up. Yes, the effort for which the standard key is designed is correlated by the manufacturer with the power of the retainer, which is why, armed with a gas key (for example), we have another problem – a broken retainer.

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It is well known that screw connections weaken their tightening when heated, and the flange nut on the grinder is no exception. You can heat the nut with a regular gas burner –

and try to unscrew with the same standard key.

If there is no burner at hand, you can heat the nut with the motor of the angle grinder itself. This is done both with a partially broken off disc, and when the remains of the disc are on a par with the nuts and only its central part is clamped between the nuts. We clamp a block of dense wood into a yew (so as not to “crawl”) Turn on the angle grinder and rest the edge of the movable nut on the block. Press the nut moderately against the bar. Logically, the nut will start to heat up from friction. Smoke is not excluded, but you can heat it up without using any heating devices, and unscrew.

The method helps simply to press the angle grinder to the floor, with the disc up. Grind off the remnants of the disc to the edges of the nuts, applying the metal flat, and then grind its remnants out of under the nuts with an edge of tin thinner than the disc.

angle, grinder, bites, disc

There is an even more humane way, this is to take a bicycle spoke, sharpen it, bend it with a hook, wrap the other end with a handle (so that it is convenient for your hand) and just sit and gouge out the remains of the disc. This also gives results. It will not take long to pick up – the width of the clamping part of the nut is about 7-10 mm. from the outer edge.

P.S. Finally, I would like to advise my example. I cut out a washer from an old nylon canister (you can make several of them at once) according to the size of a clamping nut, 1-1.5 millimeters thick. I glued two drops of glue to the working surface of the nut (so that it would not get lost) and forgot that there was such a problem with unscrewing. When biting the disc and tightening. You can just heat a nut with a good lighter or a torch from a rolled newspaper, melt the polyethylene and unscrew it like clockwork even with your hands (better with gloves – hot!)

How to unscrew the disc nut on an angle grinder (angle grinder) if it is stuck?

Grinder Safety — and lies you are told to scare you.

In this case, you can try to unscrew the nut, using a gas wrench as an assistant. You can also resort to heating and further unscrewing. But look, in the first case, with a gas wrench, you need to do everything carefully, not too much, since such efforts can contribute to the breakage of the retainer. And in the second case, the heating should also not be too strong so that it cannot affect the plastic parts..

Well, yes, so much torment because of some jammed nut. A barb and hammer are always at hand. I inserted it into the keyhole and blew sharply. Since ancient times, the technique has worked and does not fail. Well, if your hands grow from there, then you can cope with any piece of iron at hand.

You heat this nut with a burner, and unscrew it all simply and easily and you do not spoil anything.

A jammed nut on an angle grinder (angle grinder) is a fairly common problem that everyone solves in their own way, but the fact that this is an annoying (albeit logical!) Misunderstanding takes a lot of time and effort, that’s for sure.

First, determine the direction of rotation of the disc, because the nut will need to be unscrewed in exactly the same direction. If we went to the Internet, it means by the forces of a stationary key, it was not possible to unscrew the nut, it was either broken or bent.

There are some ways to loosen a jammed nut on an angle grinder.

  • With a gas wrench with good jaws, the flange nut on the angle grinder is quite narrow, and a pretty good grip is required. Often the nut can be unscrewed in this way, but it is not worth making great efforts, you can break the lock button (if it is still intact!), Its design is designed to apply the force possible when using only a stationary key.
  • If the lock button on the angle grinder is still broken, then you will have to remove the gear cover, these are three or four bolts under the disc. The disc usually breaks off to nuts. The cover is unscrewed, the gear is removed from the gearbox and clamped between the aluminum jaws in the testes and the nut is unscrewed using the methods indicated here.
  • A drill is clamped into the perforator, only the slotting mode is set (without rotation), and an effort is applied to unscrew the nut (to the edge of the nut or into the hole for the key pin).
  • The nut is heated with a hot air gun (gas torch, blowtorch) and unscrewed much easier, with the same stationary wrench or gas.
  • If the disc is broken off, you need to remove its remnants with pliers to the very radius of the nuts (well, or break the whole disc, if not a pity) Clamp sheet metal in a yew with a thickness equal to the thickness of the disc or slightly less. Turn on the angle grinder and literally exude the disc on the edge of the iron clamped in the yew. When the remnants of the abrasive disc between the washers grind off with a diameter less than the diameter of the clamped planes, the nut will also be unscrewed by hand.
  • This method is the same as 5 only instead of a piece of metal, the same abrasive disc is clamped into the yew, the process turns out faster, but you need to be careful not to spoil the geometry of the nuts on the stationary disc clamped in the yew. Otherwise, then you will have to trim the planes.

Well, now let’s try to protect ourselves from unnecessary gestures in the future to unscrew a jammed nut and possible damage to the tool.

  • I advise you to tighten the disk nut to almost no effort on the stationary wrench during rotation, the nut tightens itself, as much as is needed to hold the disk.
  • After the nut is unscrewed, you can weld on the flange an ordinary nut with faces for an open-end wrench (which one to choose depends on the diameter of the shaft thread)
  • Do not neglect placing cardboard shims under the angle grinder nut, this will reduce jamming.
  • After the cardboard gaskets supplied with the angle grinder run out, you can cut out the gaskets from a thin nylon (old plastic canisters) In case of jamming, you can simply melt it with a regular burner or blowtorch and the nut will be unscrewed by hand.
  • And finally, one more basic advice, I thought that everyone knew him, but as it turns out, no. All discs have glued paper on one side with the characteristics of the abrasive fraction and purpose. On the same side (paper side), the inner disc washer has a wide ring. So place the abrasive disc with this paper side to the gearbox. A wide washer on this side prevents biting, and when unscrewing it, it will slide along the fixed (inner flange), making it easier to unscrew the nut. As the manufacturer does it (photo) –
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You can try to unscrew the nut in several ways. As a rule, there is a slot for a simple key on the gearbox shaft – do not neglect it, otherwise it is easy to break the stopper. Holding on to the shaft (the key there should be slightly thinner than the standard one), try to unscrew the nut with a gas wrench. It will not work – do not despair, you can try to warm up the nut, but it should be borne in mind that there are plastic parts nearby – warming up requires accuracy.

The most effective and most affordable method is a sharp blow to the nut in the direction of loosening. Holding by the shaft, insert a thread (for example, a blunt chisel) into the key hole and with a sharp blow pull the nut out of place. It’s easier further.

For the future – put the disc on cardboard spacers, then the wedge will become a rare guest.

Disc destruction

Before unscrewing the nut on the angle grinder, you will have to completely crumble the disc. If it is already destroyed, you can break it with your hands. Solid circles can be sawn with a hacksaw or a metal blade. The inner metal ring and pieces that do not lend themselves to mechanical stress should remain from the abrasive wheel. Then you need to clamp a metal profile or any unnecessary plate in a vice, the thickness of which is less than or equal to the thickness of the disk (but not more). Then switch on the angle grinder and grind off the remaining abrasive to the seat sleeve. After that, the flange can be easily unscrewed with the universal angle grinder wrench..

You can take care in advance so that the tool does not get caught in the angle grinder:

  • cut washers out of cardboard or plastic and place one under the disc and the other between the disc and the flange. Even if the circle gets stuck, the plastic washer will melt when heated;
  • the face of the abrasive tool, to which the marking label is affixed, must be in contact with the support flange and not with the clamping nut. With this installation, the metal ring of the circle acts as a washer and protects it from jamming;
  • weld a standard hex nut onto the flange and unscrew it with a regular wrench;
  • if possible, the angle grinder wrench should only be used to loosen the clamping nut. When installing a new tool, it is better to tighten it manually or at least control the tightening force.

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angle grinder bites the disc what to do

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How to easily unscrew a jammed disc on an angle grinder.

A series of videos is devoted to working with manual electrical equipment. specifically with an angle grinder. This video is about.

The second thing that many advise is to warm the nut. We warm up the nut. As a result, it is slightly, but physically still obliged to expand. Resizing may or may not help …

Do not pull all the way until the scroll hold button stopper or the button itself bursts. In this case, it is not the tool with which you unscrew it that breaks, but often the case of the angle grinder.

The third method is the most effective, and, oddly enough, one of the safest for the angle grinder itself..
We take and break off the edges of the disk along the nut.

Next, we use a thin metal plate or another disc (thinner), and maybe a second angle grinder with a disc. In this case, a broken disc must be turned either with a plate or a disc. We try to sharpen the disc so as not to damage the nuts holding this disc, because they will still be useful to us. So we sharpen the whole broken circle until we grind it off and the nut is unscrewed.

Bit a disc on an angle grinder nut does not unscrew – How to unscrew a disc nut on an angle grinder (angle grinder) if it is stuck?

Reasons for biting

As a rule, this problem occurs on an angle grinder with a working surface diameter in the range of 150-180 mm. When a strong torque occurs, the disc bites. This leads to the fact that the attachment cannot be removed with a conventional wrench, even with the application of serious physical effort..

The second common reason is the use of a disc for an angle grinder that does not correspond to the factory parameters of the tool. This leads to a disruption in the operation of the entire mechanism and jamming. In rare cases, the nut does not lend itself to loosening when rust appears on its threads. This most often occurs during long-term use of the instrument or storage without changing the nozzle..

Important! Discs for angle grinders are available in standard sizes, with diameters ranging from 115 to 230 mm. The landing shaft itself is produced with a diameter of 22.2 mm; when using older models, an adapter is required.

Chinim

There are several methods available to eject a disc:

  • Saw or break the disc. You don’t even need to break it, but just grind it down to the landing sleeve. Then the nut should be unscrewed without effort with an ordinary universal wrench from an angle grinder;
  • Gas key. Physics will work here, you just increase the lever, which means the applied force will be greater. Work carefully and do not twist the rotation lock;
  • Perforator. The tool is transferred to the hammer mode, that is, without rotation. The 6 mm drill should be pressed against the flange end. The power of the hammer drill should be enough to move the nut. The angle grinder itself must be securely fixed, and the spindle rotation must be blocked;
  • Heat. The problem with this method is that it can ruin the instrument. Use a gas burner or hair dryer to heat the nut. The metal will change the volume. Then unscrew the nut with the Allen key. Open-end wrench
  • Take a 17 mm open-end wrench and grind off the walls so that their thickness is 4 mm. 4 lugs should be carved on the face of the socket head so that they coincide with the holes in the flange. Place the key under the disc. Put the socket on the nut and turn in the direction of rotation of the disc.
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With open-end wrench and socket head

Grind the working surface of the 17 key to 4 mm in thickness. Grind 4 projections on the surface of the 24 mm socket so that they fit into the holes in the flange.

The open-end wrench must be placed under the disc. Put the socket head on the nut of the angle grinder and turn it with a ratchet in the direction of rotation of the wheel.

With a hammer drill in jackhammer mode

The hammer drill must be switched to the chiseling mode without rotation. A 6 mm drill must be placed on the end of the flange or rest against the edge of the hole. The task is to unscrew the nut, to move it from its place. After that, we unscrew it with our hands or with a key. During work, you need to block the rotation of the spindle.

Warming up

The clamping nut must be heated with a hot air gun or gas burner to make the metal more pliable. Then unscrew it with the universal wrench or by hand. But the risk of this method is that you can spoil plastic parts and gearbox elements..

Disk destruction

Before unscrewing the nut on the angle grinder, you will have to completely crumble the disc. If it is already destroyed, you can break it with your hands. Solid circles can be sawn with a hacksaw or a metal blade. The inner metal ring and pieces that do not lend themselves to mechanical stress should remain from the abrasive wheel. Then you need to clamp a metal profile or any unnecessary plate in a vice, the thickness of which is less than or equal to the thickness of the disc (but not more). Then switch on the angle grinder and grind off the remaining abrasive to the seat sleeve. Then the flange can be easily unscrewed with the universal angle grinder wrench..

You can take care in advance that the tool does not get jammed in the angle grinder:

How to Use an Angle Grinder: Angle Grinder Attachments

  • cut washers out of cardboard or plastic and place one under the disc and the other between the disc and the flange. Even if the circle gets stuck, the plastic washer will melt when heated;
  • the face of the abrasive tool, to which the marking label is affixed, must be in contact with the support flange and not with the clamping nut. With this installation, the metal ring of the circle acts as a washer and protects it from jamming;
  • weld a standard hex nut onto the flange and unscrew it with a regular wrench;
  • if possible, the angle grinder wrench should only be used to loosen the clamping nut. When installing a new tool, it is better to tighten it manually or at least control the tightening force.

An angle grinder (Angle grinder) is probably the most common household repair tool. It is used by both experienced builders and beginners. This machine has one whim – sometimes a nut (disk) wedges in it. Often this trouble is the result of haste or carelessness to the device. Let’s figure out how to unscrew the nut and remove the stone (disk) without damaging the tool.

DOMOSTROY Plumbing and construction

  • Thursday, 12 December 2019 1:08
  • Author: Sereg985
  • Comment
  • Category: Construction
  • http://firmmy.ru/

The angle grinder is a multifunctional but capricious tool that does not tolerate haste and negligence. Breakdowns and breakdowns are the result of careless handling or safety violations. And the most common problem when working with an angle grinder is jamming of the abrasive tool between the support flange and the clamping nut. How to unscrew a disc on an angle grinder without damaging parts and the tool itself?

angle, grinder, bites, disc

We do not break

In order not to bother with how to unscrew the nut, you can make sure that everything works fine in advance:

  • Place cardboard washers under the disc and between the stone and the flange;
  • Attach the stone correctly, with the marked side (where the label is), to the flange, not the nut;
  • Weld a regular hex nut to the flange and work with a standard wrench.

And most importantly, when working with the tool, be careful and careful, take your time, control the tightening force. A calmly placed disc will never require additional measures to dismantle it from the tool.

angle, grinder, bites, disc

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an angle grinder, or an angle grinder, is a versatile tool with which you can perform a wide range of actions. It has a simple mechanism of action based on the rotation of the shaft by an electric motor. Essential for cutting metal parts, polishing surfaces and sanding various materials. One of the common problems during operation of an angle grinder is biting the nut that holds the disc. This does not allow replacing the nozzle, and strong impact can damage its threads, break a key or break the body..