Angle grinder (angle grinder) or grinder has established itself as a very effective tool with which you can perform a wide range of jobs. However, during its operation, safety precautions should be followed, since the speed of the discs is very high and you can be injured. Judging by the numerous reviews, many home craftsmen have problems with discs, they often crack, and bite the nuts with which they are clamped. The reason for this may be the human factor or simply marriage. As a result, such a nozzle cannot be used for its intended purpose.
It would seem that there is nothing difficult in replacing the disk with a new one. Nevertheless, at this stage, the master is faced with a problem - the nozzle is tightly clamped with a fixing nut, which does not want to unscrew. How to remove a jammed disc from a grinder? What methods are used for this? What improvised means canto use if the regular key is lost? You will learn how to remove a clamped disc from a grinder from this article.
What is the cause of the malfunction?
Before you wonder how to remove the disc from the grinder, experts recommend understanding why the angle grinder bites the nut. It has been observed that this problem is predominantly observed in angle grinders, which have a significant disc size. A disk over 18 cm is considered large. Torque is generated during operation. Further, when the master begins cutting, there is a small blow. In other words, a force is exerted on the disk. If the size of the nozzle is not more than 12 cm, then this effect will be negligible. If the disk is large, then the nut is tightened more by inertia. As a result, it is not possible to dismantle it in the usual way. For more information on how to remove the disc from the grinder, see below.
First way
How to remove a disc from a grinder if it is broken and tightly clamped with a clamping nut? Of course, you can try to use a special key for angle grinders or gas. However, judging by the reviews, having made tremendous efforts and wasting time, the master may not get the expected result. Dismantling is easier and faster. To do this, you need to completely break the disc with pliers. Due to the fact that small fragments will scatter during the work, the master will need goggles (mask) and gloves.
Then you need to take a metal plate, the thickness of which is lessthan a disk. With the help of this plate, its remnants will be ground off. To do this, you need to turn on the grinder, and securely clamp the metal piece with pliers. After completing these steps, the nut can even be unscrewed by hand.
How to remove the disc from the grinder with a key?
If the special key that comes with the angle grinder is not lost, then it will be easier to cope with the task. For those who are interested in how to remove a disc from a grinder, experts advise first of all to fix the spindle. It is on it that the disk is located and pressed with a flange. It is dismantled with an open-end wrench. To make this technically possible, the flanges are equipped with special holes into which the key pins are inserted.
To fix the spindle, you need to press the button, which is located on the body on the back side of the disk. During operation with an open-end wrench, the latch must not be released, otherwise the spindle will continue to turn. If the disc in the grinder is spinning clockwise, the open-end wrench should be turned counterclockwise and vice versa. It is important that the flange succumbs and budges. Now it can be unscrewed completely and put aside. Then the old disk is removed and replaced with a new one.
How to remove without a key?
The disk of an angle grinder, judging by the numerous reviews, can be dismantled using a large pipe wrench, which is popularly called a gas wrench. First of all, the master needs to dilute it so that it can be completely wrapped around it.flange. While turning the gas key with the flange clamped in it, the spindle is held by some metal object. According to home craftsmen, this method is considered very effective. If he did not help, then experts advise to "tap" the nut with a metal bar or a thin chisel. The spindle is also fixed. The nut will start moving if you lightly tap on the flange at the very edge. Strikes should be made in the direction in which the disc is spinning. According to experienced masters, this method cannot be called safe. The fact is that you can damage the flange, namely the holes into which the pins of the open-end wrench are inserted.
Dismantling with a nail
It will be easy to remove a damaged disk with a key made from a nail. According to experts, its optimal size is at least 100 mm. First, the nail must be bent into a U-shape. It is important that the distance between its ends corresponds to two holes in the flange. Then, using a hacksaw from the "hundred", you need to carefully cut off the hat and the tip. Now the homemade key can be inserted into the flange, fix the spindle and unscrew the mount. If it so happened that the nut was tightened very tightly, a larger lever will be required. It is necessary to insert another “weave” between the two vertical ends.
What else can be done?
If the above methods did not work, then the nut will have to be heated with a gas burner. Under the influence of high temperature, the nut will expand and begin to turn. You can also use a rather barbaric method, andjust cut the nut with a hacksaw. Then you have to buy a new one. Some craftsmen use WD-40 penetrating lubricant. It is used for processing threaded connections. Judging by the reviews, after a few minutes it will be possible to scroll the nut.
In closing
Despite the fact that many methods have been invented to solve the problem with a jammed nut, it is best to prevent a breakdown. Many masters independently equip angle grinders with washers. For the manufacture of such gaskets, cardboard or tin is suitable.
