How to put a disk on an angle grinder

How to choose and easily replace the disk on the angle grinder

After all the actions performed, you can safely continue to perform work. One of the most frequently asked questions about mounting/dismounting tooling angle grinder is, “Which side to put the disk on the angle grinder?”.

Usually inexperienced masters ask such a question. Is it possible to install a circle on the wrong side. yes. First of all, if the disk is not flat, but, for example, a petal disk, you will not be able to install it correctly; if the petals are not positioned correctly, you should simply twist the housing and the handle on the angle grinder. So the question disappears by itself.

In the event that the wheel is still flat, then you should be guided by its label, the so-called “shirt”.

If the angle grinder is spinning on itself, the disc should be installed “shirt” outward, but if the disc is spinning away from you, then, accordingly, and install it to the “shirt” inward.

If you do not adhere to this algorithm, there is a high probability that the disc will fail very quickly or will be deformed at once.

Why do some craftsmen put discs on an angle grinder with a picture inside?

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Angle grinder in our time is one of the most popular and popular tools in the household environment. That said, many even exceptionally experienced homebuilders keep arguing about the right side to fix the working disk. with the picture to the tool or with the picture outwards. It is noteworthy that each side of the argument has its own weighty arguments.

What do those who put the disk with the picture on the outside say?

Proponents of mounting the cutting disc with the picture outside in most cases argue their choice by the fact that only with this method of fixation the marking of the blade is visible: its thickness, as well as its purpose (metal or stone). The second important argument. the presence of metal rings. So many grinders have them only on one side, namely on the side where the picture is. In the opinion of some masters, it already indicates that the disk should be placed with the picture on the outside.

What do those who put the disk with the picture inside say?

Proponents of this method of installation of the cutting disc angle grinder like to point out that the metal ring on the working surface should be tightly adjacent to the metal base of the angle grinder itself. This is said to considerably improve the grip of the components and protects the disc from turning when it jams. Experts with this opinion also point to the fact that even if the disc tears, it is still no problem to extract the remnants. That means that it is worth it to secure the grinding wheel more securely.

disk, angle, grinder

What’s the right way?

It depends on the disc. In some cases there is no difference at all. Although, if the angle grinder simultaneously uses several people, the installation of a picture outside may be preferable to increase the safety of the work process so that people immediately have the opportunity to see the purpose of the tool.

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There are also special grinding discs. In most cases they are mounted with the image facing inwards, because they cannot be mounted in any other way. In addition, if one specialist works with the angle grinder, he may safely give preference to the second method of disk clamping, as it will make the tool safer to some extent.

If you want to know more interesting, it is worth to read about 5 mistakes in the work with the angle grinder. which can end badly.

DeWalt Angle grinder Disc install: How to install the disc

How is it right??

Today, after another debate. from what side to put a disk on the “angle grinder“. I decided to comment on this topic in writing, yet in my view this is quite an interesting question.And besides in the future rather than rekindle demagoguery, it is better to just throw a link to this entry.I work in a workshop (mostly power tools) and I see that quite often worn angle grinder with a “jammed” discs. Sometimes jams so that you have to dismantle the gearbox and clamping pinion in a vise unscrew the nut with a big gas wrench.Interestingly, the nuts are stuck only on machines with the disk installed on the right side, that is, “sparks” from the machine. If you consider that under NORMAL load the moment on the spindle is small then occur such bad self-tightening should not occur, but it occurs, why??. Because of the shock loads, which, when you install a disc on the right, it’s a common occurrence.Why this happens is easier to explain on the example (too lazy to draw). start the bike, and holding it by the handlebars trying to arrange a slippage of the leading (rear) wheel. So the fullest analogy with cutting with a grinder with a disk “from itself” will be if we hold the wheel standing in front of the motorcycle. Try it, you’ll love it. If you like to cut “from yourself” you will like it for sure.There’s an important caveat. the higher the support and the shorter the base, the more interesting the effect.And yet, the center of mass hammers and hands that hold it is above the plane of cutting (more precisely the vector of force), it leads to a strong jerk, and as a result, often breakages and injuriesIn short, it turns out that the work of the angle grinder “from myself” is something like a dangerous ride with the slippage on the verge of “getting up on the goat.

Now how it will be if the disk stands on the left and “sparks” under a grinder: We take the FRONT DRIVE motorcycle, naturally start it, we switch on a gear and, holding by the trunk we admire how wonderfully the front wheel is bugging. It’s the BUCKSUIT (in the analogy, it cuts), and not “drives” under the fulcrum, increasing the clutch and trying to raise the steering wheel, as it is with the rear wheel drive.So it turns out that as a system “front-wheel-drive version” is more stable and predictable, even if we press the steering wheel from above.Well, somehow so Maybe idiotically, but figuratively.

A couple of months ago I was cutting a rail sticking out under the ceiling, and I was cutting it by myself standing on a stool with a big angle grinder at 2.2 kW, besides with removed protective casing (with it. well, there is no way!).If I was cutting from me, I’d have killed myself and more than once.

Which side is better to put

According to experienced craftsmen, it is recommended to install outward facing side, which is the image and the crimp ring. Such variant has a number of essential advantages.

  • easy and straightforward saw blade change. the external arrangement of the clamping ring guarantees easy removal of the cutting element and the nut. If the nut is placed on the side with an abrasive surface, the nut will be much harder to unscrew;
  • even positioning of the cutting wheel. the crimping ring helps increase the support area of the nut when installing the wheel. The load on the cutting element is distributed evenly, ensuring a long service life. The disk lies flat on the whole surface of the supporting nut;
  • convenience of availability of information about the element parameters. the presence of the image about the characteristics of the disk on the outer side provides the master an opportunity to be fully confident in the correctness of the application of a particular disk. This is due to the fact that the parameters of the disk depends on the ability to use it to work with a particular material (concrete, metal, stainless steel). Diameter, also located on its outer side, indicates the allowable speed of its rotation. The presence of the manufacturer’s trademark, which indicates its quality and reliability.
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When choosing a cutting element it is worth considering some important features. For example:

  • What kind of material you want to work with. This determines the grit size of the abrasive surface of the consumable.
  • Power model of the angle grinder. When working with a powerful tool, it is recommended to opt for a sturdy blade made by a well-known brand.
  • Diameter of the tool. Its dimensions should not exceed the housing of the angle grinder. The most common are diameters such as 125 or 230 mm. They can be suitable for most models of domestic and foreign manufacturers.
  • Circle thickness. This criterion ranges from 1, 0 to 3, 0 mm. It is worth considering the fact that the smaller the thickness, the more fragile the disk. Dependence of disk diameter and thickness is established. The increase in one parameter entails an increase in the other.
disk, angle, grinder

It is recommended to install the disk on the stud with the side with the image and its criteria. This ensures proper seating and durability.

disk, angle, grinder

The main difference between the two sides of the wheel

On any angle grinder disc, it is easy to see the differences in the two sides of the wheel. One side is monochromatic and is coated with abrasive materials (for use with different types of metals). The front side has a special label, on which the information about the characteristics of the cutter is written.

But the main difference between the two sides of the wheel is the presence of a metal ring. This is an important design element that affects safety of use, and therefore deserves a separate mention.

The basic difference between the two sides of the wheel

Two surfaces are clearly distinguishable on any cutting disc. One of them (back) is monochromatic and is formed by the abrasive material. The second (front) has a label with basic information about the characteristics of the disk. But the main difference between the two surfaces, is the presence on the front side of the metal ring.

The metal washer (ring) is designed to protect the integrity of the disc when it is tightened by the moving flange nut, as well as to increase the support surface area. In addition, the metal washer does not allow the cutting wheel to “stick” to the surface of the nut, which greatly facilitates the process of its replacement.

Specialist recommendations for some types of work

Below we will tell you how to work with an angular grinding machine with various metal products.

Sharpening the chain of a chainsaw

Picture 2: Chain sharpening with a chain saw angle grinder

The chain is sharpened on the chain saw arm. For the work use a sharpening disk with a thickness of 2.5 mm. You need to mark the first tooth you will be cutting. With competent actions update the chain can be 4-7 times before it finally fails.

Cutting pipes

It is better to start cutting thick metal with an angle grinder from the edges. If you start with the middle part the disk can jam and bend. During machining, apply force to the lower part of the cutting tool, which ensures the efficiency of the cut.

Cutting moldings

Picture 4: cutting corners with angle grinder

You can use worn-out discs or small-diameter tools to cut metal angles

It is important to remember that the work is staged: first you cut one part of the molding, then the other.

Sharpening a circular saw blade

Picture 5: Grinding circular saw blade with angle grinder

Start by securing the angle grinder with clamps, ensuring that the rotating part of the tool is accessible. Then bring the saw blade close to the sharpening wheel, making sure you do not apply too much force. Circle should run tangentially through the workpiece. Keep an eye on the sharpening plane as you work.

Picture up or down: how to correctly place the disk on the angle grinder

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The dispute over which side of the disk should be put on the angle grinder, in its sharpness and popularity can easily compete with the most pressing historical, political, automotive and soccer issues in the former Soviet Union republics. But, what do the manufactures think about it? Maybe the answer all these years was hidden in the instruction manual, which, as you know, nobody reads.

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If you look into the operating manual of the angle grinder, the handyman will not be able to find any clear answer to the question of exactly what side should be put the disk on the angle grinder. the picture up or down. Considering the amount of discussions this fact provokes, one might wonder why such an important thing wasn’t mentioned in the main technical document for the tool users?

In fact, the answer to this question is quite trivial. In the manuals do not write anything about how you should put the disk angle grinder, because it does not matter. If the design of the disc allows it to be mounted in both ways, then you can do it any way you like. The disc installation option does not have a serious effect on safety and performance. For the same reason, there is no information on “correct” installation of the angle grinder disc in GOST, TU or foreign EN.

Backing Pad and 36 Grit Resin Fiber Disc on a 4 1/2 Inch Grinder

Manufacturers of discs for angle grinder argue that the structure of the abrasive disc is uniform and equal in performance and composition. At the same time, different companies give different advice on how, in their opinion, would be better to mount discs. This advice varies depending on the logic of the master. Most often it is advised to put the disc so that the worker could always and easily see what exactly is “armed” angle grinder right now. At the same time, the companies add that there are no strict norms and recommendations on the proper installation of the disc.

Manufacturers recommend to put a picture outside for those reasons that drawing paint allows additional protection of the tool from the influence of the clamping nut, acting in such a way as a protective seal. However, this does not affect the performance of the tool in any way.

And here is an interesting video from our channel:

In continuation of the topic read about 5 things you should understand about the cordless angle grinder (what they will not tell you in the store).

What to do if the disc is jammed on the angle grinder?

Everyone who has experience of intensive work with an angle grinder probably at least once, yes encountered such a situation.

Usually, it happens if the disc is clamped between the parts, it stops or breaks, and the angle grinder motor continues to rotate and thus tightens the nut irreversibly.

So what can you do if the disk jammed on the angle grinder?

Each master has his own secrets.Especially for you, we have learned a few of them, and now we will share the most common ways out of the situation.

Remove the disk from the angle grinder

First, figure out which way to unscrew the nut.

disk, angle, grinder

The flange must always be turned in the direction in which the disk rotates.

For this kind of work you will need either two wrenches or two clamps.

Here’s what you need to do: destroy the remains of the disk, use one wrench to fix the washer behind the disk and the other to unscrew the flange.

Remove the disk from the angle grinder

This method involves the use of the famous VD-40 grease.

It’s probably like duct tape, applicable in all cases of life.

You need to spray the flange, wait about 5 minutes and try to unscrew it with a wrench.

remove the disk from the angle grinder

This method is used in extreme cases.

When no other methods help, you can try to saw the flange with a tool such as a hacksaw for metal, and then buy a new one in a specialized store.

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