A simple modification to the grinder for easy unscrewing of the nut

A simple modification to the grinder for easy unscrewing of the nut

With frequent use of an angle grinder, probably everyone has at least several times encountered the problem of the disc biting, when it is simply impossible to unscrew the clamping nut. By applying force, you can bend the included key, tear out its antennae, or break the gearbox lock button. This can be avoided if you first take care of simple modifications to the tool.

Required Tools


To remake the clamping system you will need:
  • open-end wrench 17;
  • open-end wrench 36;
  • crosshead screwdriver;
  • hacksaw or emery;
  • file.

To make the work easier, it wouldn’t hurt to have an additional grinder. If it is not there, then you can perform cutting and sharpening work with sandpaper. A regular hacksaw and file will also work.

Modification of the nut and gearbox shaft


The first step is to remake the clamping nut that tightens the disk. It is cut or ground to fit a 36mm open-end wrench.
A simple modification to the grinder for easy unscrewing of the nut

After modifying the nut, it is necessary to remove the protective casing on the angle grinder. It is usually secured with a Phillips screw. Less commonly, it can be unscrewed with a hex wrench.
A simple modification to the grinder for easy unscrewing of the nut

Having gotten rid of the casing, you need to grind the shaft coming out of the gearbox with a 17mm wrench. Usually it already has a factory groove, but it is made too narrow, so a standard wrench does not grip it. If you have a spare grinder, you can make a groove without removing the shaft. When working with sandpaper or a file, you will still have to remove it.
A simple modification to the grinder for easy unscrewing of the nut

A simple modification to the grinder for easy unscrewing of the nut

Now the tightly pressed disk can be unscrewed with two strong keys 17 and 36. In this case, the lock button will not be needed at all.
A simple modification to the grinder for easy unscrewing of the nut

By cutting the nut to a standard 36 mm, the factory holes on it for a standard key with antennae will remain intact. Thanks to this, you can quickly insert and remove discs with its help, and in case of biting, use a more durable tool.

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Comments (18)
  1. Grey
    #1 Grey Guests 23 November 2018 13:58
    2
    I remade the grinder like this a long time ago!
  2. Victor Malov
    #2 Victor Malov Guests 23 November 2018 17:29
    27
    The easiest way is to put a circle of paper under the nut and tighten it tightly by hand, unscrewing it is also not a problem, hold down the stopper button and unscrew it with a little force... I've been using this method for 10 years now.
    1. Guest Alexey
      #3 Guest Alexey Guests 23 November 2018 19:47
      5
      Normal people, masters, ALWAYS DO THIS, no one delays the key.
      You wrote it correctly.
    2. Andryukha
      #4 Andryukha Guests 23 November 2018 22:10
      2
      Absolutely right, and there is no need for any dubious hemorrhoids with revision
    3. Guest Alexander
      #5 Guest Alexander Guests December 4, 2018 01:07
      0
      A press will be better, and rub the gasket with a little soap before tightening
  3. Guest
    #6 Guest Guests 23 November 2018 18:38
    2
    I bought a washer nut at the store and had no problems.
  4. Vitaly
    #7 Vitaly Guests 23 November 2018 19:23
    4
    It’s easier to buy a nut for an open-end wrench for 150 rubles, and don’t worry about it.
  5. DImMAster
    #8 DImMAster Guests 23 November 2018 19:33
    8
    ...install the disc with the iron holder facing down so that it does not act as a lock washer on the holes in the top nut.
  6. Sergey
    #9 Sergey Guests November 23, 2018 21:00
    3
    ready-made nut for a turnkey angle grinder 22 in the store for 8 rubles.
  7. Kirill
    #10 Kirill Guests 23 November 2018 22:46
    11
    Dangerous and dubious modification! I wouldn't recommend doing this. Jumping off when cutting or grinding the end of a profile pipe, for example, can cause a strong impact on the edge of the tightening nut. Which will lead to the grinder flying out of your hands with sad consequences! I completely agree with Viktor Malov, he’s right, it’s better to put a piece of paper
  8. Guest Dmitry
    #11 Guest Dmitry Guests 23 November 2018 23:14
    7
    A circle is cut out of a juice bag and placed under the nut and... that’s it, but it doesn’t bite
  9. Vladimir Ivanovich
    #12 Vladimir Ivanovich Guests 24 November 2018 14:08
    1
    cut under the nut and put a rubber band
  10. Dima
    #13 Dima Guests 24 November 2018 16:37
    2
    I have a recess under the washer, a rubber ring in it always unscrews normally, I put a piece of paper in it