Bite the disc on the angle grinder nut is not unscrewed How to remove the disc from the angle grinder. 4 ways to remove a disc if it is jammed. How to place the disc on the angle grinder correctly?
Discs for an angle grinder differ in the following main features:
- Outside diameter;
- Disc thickness;
- The material from which the disc itself is made;
- The characteristic of the maximum rotation speed;
- And, of course, the area of the proposed work.
For the best understanding, let’s take a look at the main types of angle grinder discs and define their application:
- Cut-off wheels. It is the most widely used consumable for angle grinder. Their main purpose is to work with metal, stone and wood. A variety of cutting discs for an angle grinder are diamond discs. This is a heavy-duty tooling for processing high-strength materials such as reinforced concrete, tiles, porcelain stoneware, marble.
- Grinding and roughing wheels. As the name implies, this type of disc is used for grinding various materials, for example, polishing products made of stone, or for removing (roughing) the top layer, for example, removing a layer of rust or old paint coating.
How to remove or replace a jammed disc from an angle grinder?
How to remove a disc from an angle grinder. An angle grinder (hereinafter referred to as an angle grinder), popularly referred to as an angle grinder, is probably the most popular inventory that is present in the arsenal of almost every master, regardless of his qualifications.
This tool is actively used in abrasive processing: cutting, grinding, cleaning workpieces from stone, metal and many others. It is widely used in areas such as construction, woodworking and other similar types of work. Like any other tool, the angle grinder is also divided into several classes.
This refers to the following: household, semi-professional and pro-class instrument. This classification is determined by the power resource of the tool, its performance, the presence of certain additional options, material and build quality, etc.
Consumables for an angle grinder, in addition to various types of cleaning brushes, are cut-off wheels and a variety of grinding discs. Types of accessories for angle grinders: how to make the right choice?
The main question: How to choose the right disc for your angle grinder?
When choosing accessories for an angle grinder, first of all, you should decide on the type of proposed work. The choice of the type of disc will depend on this. We also want to mention that when choosing a consumable, be sure to take into account the power characteristics of each specific model. Examine the labeling. Often, it is printed on the disc itself and includes a set of symbols by which you can determine the relevance of this consumable to perform the intended work.
Also, focus your attention on such a parameter as the diameter of the disc. In no case should it exceed the size of the protective cover on the particular tool model. The size range of discs is usually represented by the following diameters: 115, 125, 150, 180 and 230 mm. The most common diameters are 125 mm. And 230 mm. They are optimal for most types of work and the capabilities of the tool itself.
Among the bakelite-based grinding discs, the most popular discs are 6.00 mm thick. This parameter depends on the total diameter of the disc. The relationship is as follows: the larger the disk diameter, the greater its thickness and vice versa.
Why bites the nut on the angle grinder that holds the disc
I will say, perhaps, a well-known truth. It bites nuts more often on angle grinders with a disc size of a significant size, say, 150-180 mm or more. The thing is that the resulting torque, in the case of a disk impact at the time of the start of cutting, is much greater than for a disk, say 125 mm. As a result, by inertia, the nut tightens so tightly that it is very difficult to break it in the usual and usual ways. Now about the special methods.
How to unscrew the disc (nut) on an angle grinder, if bitten, jammed, does not unscrew &# 128249;
An angle grinder, or as it is called more popularly and in a popular way, an angle grinder, nowadays an irreplaceable and very useful tool. Without it, neither here nor there! And if it suddenly fails, then you have to dodge in every possible way, look for alternatives and think about restoring the instrument. At the same time, it is impossible to use an angle grinder for its intended purpose because of a kind of simple lining when the disc does not unscrew. Rather, the nut that holds this disc is not unscrewed. Here you can break the wood, namely, bend or break the key, damage the lock button, break the case, but still not unscrew the very unfortunate nut. So, we will immediately warn you, if it is not too late. If you suddenly do not unscrew the nut holding the disc with a key, then you need to change tactics. And it is precisely the cardinal method of unscrewing that our article will be devoted.
How to unscrew the disc nut of an angle grinder (angle grinder) if it is bitten
So, if there is no way with the key, even if you insert it and hit it lightly with a hammer, then we begin to use something more serious.
The first thing you can try, but again without fanaticism, is to take a rod, insert it into the holes on the nut and, using a hammer, move the nut in the direction of its untwisting. The main thing here is not to break the button and not to rip the holes, as here
The second thing that many advise is to warm the nut. We warm up the nut. As a result, it is a little, but physically still has to expand. Resizing may or may not help
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 disc 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, the 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.
If you will be using a second disc or metal plate, it is best to insert them in a vise to hold them. Since it is dangerous to hold such objects with your hands. This is the most effective method!
Tapping the nut
This method is similar to the previous one, only you can use a suitable metal rod or chisel. After fixing the spindle head, tap on the edges of the clamping holes in the direction of the wheel movement. By slightly sliding the lock from a dead center, you can unscrew it by hand. However, the method is not the most harmless for the tool; the bore holes for a standard key are damaged.
Replacing the disc with opposite rotation
This method has several advantages; it can be carried out without a key and with a broken spindle lock. Angle grinder beginners mistakenly believe that if the stopper breaks, it is almost impossible to unscrew the nut. However, this is not the case. You don’t even need keys.
The bottom line is that the abrasive wheel needs to be rotated in different directions. Wearing thick gloves, you need to hit the cutting edge of the circle several times. This is what you will provide variable movement in different directions. As a rule, a couple of sharp blows are enough so that the nut can be easily unscrewed.
How to remove a disc from an angle grinder: in normal mode and after jamming
When working with any mechanisms, one should always expect emergency situations, which cannot always be resolved in accordance with the recommendations of the manufacturers. The angle grinder is no exception. When working, you may encounter excessive clamping of the cutting wheel. This problem occurs especially often with large, powerful models with a power of more than 2 kW. What to do if the disc is bitten on the angle grinder or the nut does not loosen? We will deal with this issue further.
What are the ways to unscrew a tightened nut on an angle grinder?
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.
- Reasons for biting
- How to unscrew if it is delayed?
- How to avoid snacking?
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 using a disc for an angle grinder that does not match the factory settings 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 tip.
How to unscrew if it is delayed?
Remember! Unscrew in the direction of rotation of the disc. Those. If the disc rotates clockwise, then you need to unscrew the nut clockwise.
The easiest way to unscrew the disc mount is to place the wrench and then hit it several times with a moderate hammer.
If that doesn’t work, there are alternative methods for solving the problem:
- Warm up the fastening mechanism with a torch, which will lead to the expansion of the metal. As a result, the structure will become mobile;
- Use a small metal plate to grind the disc down to the nut itself. Continue grinding until its surface touches the nut and begins to twist it;
- Insert the steel pipe into the holes of the nut, use it as a lever to unscrew the tightened nut. Do not apply too much force so as not to break the thread;
- Lubricate the threads with machine oil such as WD-40. Wait 3-5 minutes and then try unscrewing the mount with a wrench. Using this method, you can get rid of rust inside the landing shaft;
- If you need to remove a circle that has not been used for a long time, you can start tightening the fasteners even more. After that, try again to weaken it;
- Boiled or rusted threads on an angle grinder can be treated with turpentine, vinegar, white spirit or rust remover. After processing, you need to wait at least 30 minutes, and then try again to unscrew the nut.
If a situation arises when you are left without a key, you can cut down the stuck mount with a chisel or grind it off with a second angle grinder with a disc for working on metal. After that, you will have to restore the thread, as well as look for a spare nut. If the circle still does not lend itself, you can try to combine different methods. For example, treat the shaft with machine oil, and then start unscrewing the nozzle using a lever or knocking the mechanism with a hammer.