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Easy way to unscrew the grinder nut

A quite common problem for those who use a grinder is a angle grinder, a cutting disc breaks and tightly clamps the clamping nut. And the most interesting thing is that sometimes it is almost impossible to unscrew the nut either with a special angle grinder or with a gas wrench, or something else. And if you manage to do it, then it takes tremendous effort and time spent. I will show you a simple way to save your time and effort so that you can unscrew this grinder nut without unnecessary difficulties.
Easy way to unscrew the grinder nut

A simple way to unscrew the nut of the grinder


To unscrew the nut, first of all, it is necessary to break the remains of the broken cutting disc under the root.
Easy way to unscrew the grinder nut

This can be done very simply with pliers. Do not forget about the protective equipment: glasses and gloves, as various small splinter flies.
Easy way to unscrew the grinder nut

The result should be this:
Easy way to unscrew the grinder nut

Now we need to find a piece of metal that will be thinner in thickness than the disc of the grinder.
Easy way to unscrew the grinder nut

Turn on the angle grinder and with this piece we grind the rest of the disk between the nuts.
Easy way to unscrew the grinder nut

Easy way to unscrew the grinder nut

After everything has been machined inside, the nut is unscrewed not only with a key, but even with your hands.
Easy way to unscrew the grinder nut

Easy way to unscrew the grinder nut

Easy way to unscrew the grinder nut

Here is such a very simple and very fast way. In addition, it is safe for the bearings of the grinder, since if the nut does not loosen, most people immediately take a hammer in their hand and start trying to unscrew the nut with tapping.

What to do to prevent this from happening again?


In order to no longer fall into this situation, you can put a plastic, paper or cardboard washer under the nut before clamping a new disk. And in this case, the nut can always be unscrewed without problems.
Easy way to unscrew the grinder nut

Easy way to unscrew the grinder nut

Cutting stones or discs are not always able to find the proper quality and therefore their fracture is becoming a frequent problem. Of course, the human factor of improper exploitation is not excluded. But now, if you are in a similar story, you know what to do. See you soon!

Watch the video


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Comments (98)
  1. Guest Andrey
    #1 Guest Andrey Guests April 14, 2018 11:54
    9
    I have been using this method for a long time, but instead of metal I take a chip from the same circle. ATTENTION! The nut is very hot !!!
    1. Profi
      #2 Profi Guests April 14, 2018 18:38
      6
      Old hacksaw blade
    2. nail
      #3 nail Guests April 15, 2018 09:51
      4
      Your method is correct. but the clamping nuts grind. after they do not hold the disc
    3. Boris
      #4 Boris Guests April 24, 2018 15:48
      12
      The rest of the broken disk is clamped in a vice and wrench, so as not to spoil the stopper, or with a gas wrench, unscrew the nut, easily.
      1. boris
        #5 boris Guests July 18, 2018 16:40
        9
        Grinders are big and small, the keys to them, respectively. There is no strength to unscrew the nut, increase the shoulder or clamp the disk in a vice. The Bulgarian is 2.2 kW and at serious speeds sharpening a broken disk while holding a piece of iron in your hands there is a good chance to stay fingerless.
  2. Ivan
    #6 Ivan Guests April 14, 2018 16:11
    36
    There is an even simpler way to unscrew the nut and no need to spend electricity!
    1. Rudolf
      #7 Rudolf Guests April 24, 2018 18:31
      2
      Fine
  3. Vyacheslav
    #8 Vyacheslav Guests April 14, 2018 18:16
    23
    There are special nuts, such as Bosch.
    It’s worth a little expensive, but sometimes time
    matters more. And believe me, having tried 1 time
    such a nut, engage in such perversions
    do not want to. The author apparently never heard of safety precautions.
    After such advice, whoever injures a finger or a splinter flies in the eye.
    1. Alexander
      #9 Alexander Guests April 17, 2018 09:10
      13
      I agree with you. holding a piece of iron with your hand and shoving it under the nut is not very safe. screw the glove and brush onto the shaft.
  4. Guest Victor
    #10 Guest Victor Guests April 14, 2018 18:22
    7
    In our stores they sell nuts with a rotating flange. They do not jam and are always easily unscrewed.
  5. Guest Gennady
    #11 Guest Gennady Guests April 14, 2018 18:24
    4
    I didn’t have such situations, but neighbors often happen. I’ll tell you for sure, and let the magarych put it (I’m joking, of course). The method is working, it can be seen without verification.
  6. sdf258as
    #12 sdf258as Guests April 14, 2018 18:37
    16
    This is without antler fuss. And not safe !!! Two keys are simpler. Who knows how to use a grinder, such
    Will not be engaged in nonsense.
    1. Guest Valery
      #13 Guest Valery Guests April 16, 2018 20:26
      8
      it’s easier to break off the disk and heat the nut on a piece of wood calmly unscrewed without a key Only do not forget about gloves ...
      1. Guest Alexander
        #14 Guest Alexander Guests June 2, 2018 13:21
        0
        It’s easier to turn on the head and before you cut it to think about whether or not I will clamp the grinder
  7. Rhino96
    #15 Rhino96 Guests April 14, 2018 18:59
    8
    I unscrew the puncher, really quickly and safely
  8. Alexander
    #16 Alexander Guests April 14, 2018 19:30
    0
    sorry, with metal this will not work. I once once clamped a metal disk. I sawed off two sides of the nut with a hacksaw, then I managed to unscrew
  9. Guest Vladislav
    #17 Guest Vladislav Guests April 14, 2018 20:48
    17
    When changing a circle to a new one, always tighten the nut firmly with a wrench. This will not allow, with a sharp braking of the cutting wheel, to pull the nut by inertia ... Thanks for the advice! And my advice to help you!
    1. Guest Sergey
      #18 Guest Sergey Guests April 16, 2018 19:34
      2
      Well done, right!
  10. Nameless
    #19 Nameless Guests April 14, 2018 10:39 p.m.
    2
    all right, what if a diamond blade?
  11. Guranec
    #20 Guranec Guests April 15, 2018 04:08
    27
    Guys! Put the disc with a sticker-inscription on the grinder, and not out, As in the penultimate photo
    . Forget about the key to unscrew the drive.
    1. Guest Sergey
      #21 Guest Sergey Guests April 20, 2018 15:31
      4
      for fools, the label is drawn on only one side. and set the disc only with the label out!
      1. Another Sergey
        #22 Another Sergey Guests November 26, 2018 19:09
        0
        And for fools, there are tool brochures (angle grinders), such as Bosch, Makita, Kress. One needs only to pay attention to HOW THE DISK IS INSTALLED.
        The firm Fiolent, dear to me, at one time (I don’t know how now) even stuck a sticker on the protective cover "Install the cutting disc with a metal sleeve here." Moreover, two years ago I sent an explanatory letter, according to which mechanical damage to the gear case with an incorrectly installed cutting disc should not be considered a warranty case.
  12. Guest Michael
    #23 Guest Michael Guests April 15, 2018 05:39
    7
    I just heated the nut with a construction hairdryer and it unscrewed without any problems.
    1. Alexander Pupkevich
      #24 Alexander Pupkevich Visitors August 5, 2019 9:22 p.m.
      0
      Of course, heating. He pressed the nut to the stump, worked a little, the heat from friction, unscrewed by hand.
  13. Pavel
    #25 Pavel Guests April 15, 2018 06:13
    18
    There is only a risk that this piece of iron will be torn out of your hand and you will be left without fingers. Just for some reason, in this useful advice they do not write about it
  14. Vic
    #26 Vic Guests April 15, 2018 07:37
    15
    There is a button on the grinder that blocks the rotation of the disc ...
    Press and unscrew the key without problems
    Good luck
    1. y-yz
      #27 y-yz Guests April 15, 2018 08:22
      8
      This button in the silumin casing, with extreme unscrewing, part of the casing breaks off and enters the gearbox. And then really good luck comes. The “counter” clamping nut the washer has flanges, remove the protection and unscrew it with a 32 key
    2. Guest Igor
      #28 Guest Igor Guests October 14, 2018 9:09 p.m.
      1
      Most often, it bites so that either the key bends or the stopper breaks. And this is even worse.
  15. Damir
    #29 Damir Guests April 15, 2018 08:11
    2
    there are special nuts
  16. Guest Andrey
    #30 Guest Andrey Guests April 15, 2018 10:31
    11
    More DANGEROUS advice is hard to come up with! Bite the plate and injury! It is necessary NOT including the grinder with this plate and a hammer to hollow out the rest of the disk in a circle or to cut it out with a hacksaw blade. A little longer but you will be more whole !!!
    1. gleb
      #31 gleb Guests April 30, 2018 04:17
      0
      well, or to cut out the rest of the disk with a hacksaw blade.
      ----------
      It is enough to cut out the material of the disk in the area of ​​drilling, which is for the key on the nut - it is under drilling when squeezing that tubercles are formed that prevent turning. The hacksaw blade should be new, sawing slowly, but pressing firmly - leaves two blades.
  17. you can still heat the nut with a cutter
    #32 you can still heat the nut with a cutter Guests April 15, 2018 10:56
    5
    but the disk instead of the plate should not be taken. the nut is sharpened and the new disk will be clamped with a smaller diameter
  18. Anton Vladimirov
    #33 Anton Vladimirov Guests April 15, 2018 15:53
    3
    For bearings, the method is, of course, safe. But for the cutter - not really. Most often, the discs are torn, not because of their poor quality, but because they are skewed in the cut, or sawed by themselves, or tensioned structures are sawed for clamping. I would definitely not recommend doing this, because the risk of injury is twofold - you can damage your fingers on the nut (wipe the skin, burn, tighten the gloves under the casing) and get a shard or piece of metal that can escape from your hands.
  19. Anatoly.
    #34 Anatoly. Guests April 15, 2018 18:17
    3
    I have been using this method for a long time.
  20. Alexander
    #35 Alexander Guests April 15, 2018 21:17
    12
    nonsense is not crazy, just hit the core ....
    1. Sergum
      #36 Sergum Guests April 19, 2018 12:51
      2
      it is necessary to put the cutting disc with the front side inward, then the nut “sticks” to the disc, which rotates freely thanks to the tin center on the back side. Roughly speaking, think on which side you put the washer on the bolted connection ?!
  21. Aleks
    #37 Aleks Guests April 16, 2018 07:29
    4
    But what gas key is not in the store ????
  22. Guest Eugene
    #38 Guest Eugene Guests April 16, 2018 16:05
    9
    it’s easier to put a cutting disc with a picture on the protective cover, so that the metal ring on the disk is on the other hand, I never clamped it this way!
  23. Guest Victor
    #39 Guest Victor Guests April 16, 2018 19:23
    0
    Paper may burn. Surely you need a heat sink in a powerful rotational mechanism. Thanks for the tip ..
    1. Guest Vladimir
      #40 Guest Vladimir Guests April 28, 2018 16:22
      1
      Put a coin on the paper and light the paper ... wherever the paper touches the metal, there won't be anything on the paper. And I always use a washer, cut it out of an empty eggplant, always helps out, without a problem the disk is unscrewed.
  24. Guest Sergey
    #41 Guest Sergey Guests April 16, 2018 19:32
    2
    Whatever the disk clamps, you must initially tighten it with a key, without fanaticism, but not by hand, as is customary. It bites the initially untightened disk when jamming in the processed material.
  25. Guest Victor
    #42 Guest Victor Guests April 16, 2018 19:59
    1
    It pinched me twice. The first time I thought and suffered for a long time, I almost broke the key. Then he clamped the nut in a large vise, pressed the rotation lock and, using the lever of the grinder itself, successfully removed the nut. The second time I acted according to the knurled pattern ... The latch seems to be intact ..
  26. US
    #43 US Guests April 16, 2018 21:29
    2
    So many practical advice. Previously, I really unscrewed the gas key.
  27. Novel
    #44 Novel Guests April 16, 2018 10:24 PM
    2
    Just when installing the disk do not need to tighten the nut with a wrench. Enough hand effort.
  28. Alex s
    #45 Alex s Guests April 17, 2018 00:45
    1
    Before unscrewing, did you try to press the stop / turn stop button?
  29. Guest Vladimir
    #46 Guest Vladimir Guests April 17, 2018 07:03
    8
    Hands breaks on the very shirt. Simply put the nut on a piece of wood, turn on the grinder and the nut will heat up and unscrew with a different key.
  30. Guest Vlad
    #47 Guest Vlad Guests April 17, 2018 07:45
    2
    Everything is much easier guys! If the disk is jammed, rotate the disk on the grinder on any surface (you can use it on the floor) without turning on the motor, first back, and then sharply forward and the nut will loosen freely.
  31. Stas
    #48 Stas Guests April 17, 2018 23:10
    3
    Is this an easy way? Here is my way.We take a puncher, a broken one, or a whole 6 mm drill, insert it at an angle of 45 degrees into the hole of the disk washer and make a short 1-2 blow with a puncher. The clamped disc must be abutted while hitting the ground, the board or clamped in a vice.
  32. Guest Alex
    #49 Guest Alex Guests April 18, 2018 10:18
    2
    Before spinning the disk, cut the gasket out of any sandpaper on a fabric basis and there will never be any problems with loosening the nut. I cut the gasket 20 years ago, it switches from one killed machine to another (I use a third machine over the years)
  33. Guest Yuri
    #50 Guest Yuri Guests April 18, 2018 12:49
    3
    With this thin piece of metal your fingers will be cut off!
  34. Guest Sergey
    #51 Guest Sergey Guests April 18, 2018 2:31 p.m.
    4
    Between a nut and a disk lay a piece of salofan, the nut turns off without problems!
  35. Guest Andrey
    #52 Guest Andrey Guests April 18, 2018 18:46
    2
    and Bosch also has a special nut that loosens and twists by hand always - buy and do not worry. I remember it cost me 650 r but it's worth it
  36. Guest Vladimir
    #53 Guest Vladimir Guests April 18, 2018 21:50
    1
    I have been working as a grinder (different types: both imported and ours) for almost 20 years. Tearing and biting discs repeatedly. And now I weld a regular M12 nut (turnkey 24) to the clamping nut, and when installing the disk, I put a rubber washer (from the car camera) under it. And the lever for the key to unscrew the “bitten” nut, you can pick up any.
    1. Alexey
      #54 Alexey Guests May 30, 2019 12:41
      0
      good advice, I’ll do it
  37. Guest Vladimir
    #55 Guest Vladimir Guests April 19, 2018 08:44
    3
    Someday this advice will chop off fingers for someone.
  38. Guest Michael
    #56 Guest Michael Guests April 19, 2018 12:46
    3
    Warm! Than? Grinder ... Break off the disc, so as not to hit, press the board to the nut, twist for about 20 seconds. Just do not overheat, it's easy.
  39. Guest alex
    #57 Guest alex Guests April 19, 2018 17:25
    3
    I have had such a snack five times in my life. Every time I had to buy a new grinder. Now I will try your advice!
  40. Nikolay
    #58 Nikolay Guests April 19, 2018 20:23
    0
    On each grinder there is a "STOP digging", which is located on the opposite side of the protective casing. And each grinder comes with a key for loosening (tightening) the discs. Is it really so difficult to combine these two devices ??? Even if the key is lost, you can easily turn it off ...
    But, guess this secret yourself. The nut is unscrewed in a minute.
    1. Vaargo
      #59 Vaargo Visitors May 9, 2018 14:27
      1
      Not always like this
    2. Grandpa Vasya
      #60 Grandpa Vasya Visitors 13 january 2019 20:06
      0
      Probably you have never bit a nut for real. When you have a bite, then the stop button breaks out and the pins are folded at the key.
  41. Selch
    #61 Selch Guests April 19, 2018 10:47 p.m.
    1
    No need to tighten the disc with a key. Simple enough by hand. Then it does not clamp so that it does not unwind.
  42. Alexander
    #62 Alexander Guests April 20, 2018 10:51
    0
    We clamp this nut in a vise screwed to the table. Press the locking button on the grinder and unscrew. The Ears body acts as a lever.
  43. Vyacheslav
    #63 Vyacheslav Guests April 20, 2018 13:19
    0
    I easily unscrew the circle with my hand, gloves, hands, pressing the lock, a little effort when turning counterclockwise and there is no circle ... all the more there is something to cling to. I have been working as a locksmith for more than a dozen years, but I haven’t worked on such a hemorrhoid anyway. offset, for sending a video, well done
  44. Guest Vlad
    #64 Guest Vlad Guests April 21, 2018 1:02 p.m.
    4
    Do you want to dump disk fragments in your hands? Do you study TB at work?
    This is from the "bad advice" cycle. I hope no one will repeat such nonsense.
    Any nut is loosened by completely conventional methods.
  45. alexander
    #65 Alexander Guests April 21, 2018 13:29
    0
    I saw also an interesting way, though not quite desirable with respect to the tool: we break off to the maximum everything that remains of the disk, pull the start - and when the shaft almost stops from inertia, press the lock button - everything except the nut is braked. here the main thing is not to overdo it with the revolutions at which to stop. But I think if the machine is experiencing a wedge of the disk, then locking will survive at low speeds.
  46. Guest Vladimir
    #66 Guest Vladimir Guests April 21, 2018 20:07
    5
    Remove the cover. There are grooves on both sides of the shaft under the open end wrench. Insert and quietly unscrew.
  47. A novel
    #67 Novel Guests April 22, 2018 13:20
    0
    It’s easier to warm up a nut on a wooden block, the disk burns out, is unscrewed by hand. And so this piece of iron will fly directly into the forehead.
  48. Max
    #68 Max Guests April 22, 2018 17:44
    1
    Awesome option. Even better is to cut the grinder on the other hand with another grinder.
    I have probably changed 100,500 disks and just can’t imagine the situation so that the nut cannot be unscrewed. At least with a gas key.
  49. geven
    #69 geven Guests April 23, 2018 13:24
    1
    I picked up an aluminum washer under the clamping nut and plus I tighten the nut well with a wrench. This problem no longer arose
  50. dj-shoom
    #70 dj-shoom Guests April 24, 2018 15:37
    6
    The easiest way and the safest. Take both pressure washers on the grinder. On each, grind a little in parallel to get the edges for the key. And no more problems. Never.
    1. Nikolay.
      #71 Nikolay. Guests April 25, 2018 21:12
      4
      I did just that. Keys to 36. Perhaps this should be done immediately after purchase.

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