angle grinder spins the other way
Usually the disk rotates counterclockwise (if you look from the side of the disk), sparks fly forward, but recently, in a warehouse selling pipes, I saw that the cutter’s disk rotates in the opposite direction, sparks fly under the feet. He has to cut a lot and every day. That’s why the question arose. what’s the right thing to do?? It is correct in terms of safety when the sparks are flying at the worker working with the angle grinder, at his feet. Why? When the angle grinder is clamped, it flies forward. No harm done. (Sparks fly, pants burn. does not count). When you turn it over, the sparks fly forward. Usually when cutting, the right elbow rests on the right shin. And when clamping., angle grinder
How to fit an Angle Grinder blade, label up or label down?
flies over the shin. It is better not to describe the consequences, I think it is clear. At least a month in the hospital. The majority of professionals cut “on their pants.
That’s exactly right (as you saw). when the sparks fly to the cutter, and the tractive force of the angle grinder from the cutter, not on it. What you saw, sparks flying at the cutter, it is the right choice of setting the position of the angle grinder, and exactly the installation of the body, handle and guard, because the direction of rotation of the shaft does not change. You can change the handle (depending on the model of angle grinder, it can be set in three or two positions to 180 degrees and 180 degrees in increments of 90) You can rotate the hood within its adjustment. But not all angle grinders allow you to “twist
” handle as you like. With some you can also change the gearbox position.
Angle grinder (colloquially called “angle grinder”)
“) quite dangerous tool, though very effective in many locksmith operations.
Having experience with all popular grinders, from 115 th to 230 th (the diameter of the disk, well, and accordingly the power of the unit), I can say that the devices to 150-th disc can still be confidently kept then how in the case of unpredictable “recoil” above this diameter, it is very difficult, and fraught with serious injury (!) That’s why you should not tempt fate, and regardless of the power of the unit, and disk diameter, always direct its rotation away from yourself (if you look at his top) and sparks may fly at the feet, but it’s a hundred percent guarantee that you will hold the angle grinder in the case of bite and ejection.
Again from personal experience, I can conclude that arm muscles are much harder to reflexively respond to extension than flexion (IMHO!) “Ducking” the cutter is less dangerous than rolling on it. At the very least, angle grinder
it’s just going to jump out of your hands and away from you, not at you. Of course you let go of the retainer and it just falls off without hurting you.
Well, let the sparks fly, but always saw at yourself. That’s what you need a good suit (pants and a suit of thick fabric) From the flying sparks can burn your pants (only that. it’s not terrible), but from the angle grinder flew at you. It can be anything!
I came to this belief solely from my experience, and this experience was not without some “losses”. However, it is confirmed by others.
DWT, standard disc is on right side, rotates counterclockwise, sparks fly forward. But I work so categorically uncomfortable, because I can not see any of the product or the circle.
I turned the gearbox so the disk is visible but the sparks are flying at me. not nice. The question is whether it is possible to make the disk rotate in a clockwise direction? Change the wires from the brushes? And another question, how safe is it. In principle, the discs are light, will not cause serious injury, except that the eyes will be knocked out if no goggles.
Who knows, tell me: I took an angle grinder (Interskol) from an acquaintance. I insert the wheel, put a gasket under the nut. As it should tighten the nut. I turn it on and the nut immediately starts unscrewing. Especially quickly. after I turn off the angle grinder. What’s that got to do with it??
luchnik78 wrote : The nut immediately begins to unscrew. Especially fast. after I turn off the angle grinder. What does it have to do with?
What’s your advice? Tighten it more or remove the gasket.
How it could happen and how to fix it?
luchnik78 wrote : angle grinder. when rotating the clamping nut unscrews Why.
I’ve never had a twist!grinders passed through my hands a lot, I myself work 125, when rotating nut should unscrew judging by the thread (I work this way, I am so comfortable), and never unscrewed, you better tighten, or put a new nut!
The brake, the disc, by inertia, unscrews the nut. Put the gasket under the disk and not under the nut, or remove it.
READ angle grinder with a broach with his hands
Maybe it has been repaired and accidentally switched brushes, now rotates the other way
Maybe it has been repaired and the brushes were accidentally switched and it’s spinning the other way
Then the nut would be the opposite, self-tightening when stopped.
When the angle grinder slows down, the disk, by inertia, unscrews the nut. Put a gasket under the disc instead of under the nut, or remove it altogether.
And put a new nut, and with the gaskets experimented. the effect is the same. I think. maybe really wheel rotates in the other direction. The owner said his disc was jammed and he had to remove the head with the shaft that has the bevel gear on it. He clamped it in a vise and used a gas wrench to unscrew the nut. Maybe I got it wrong. He advised me that when you put a new disc, put the load on it, and then the nut will not unscrew, but I do not like it. you can forget about it and hurt yourself
Which way the angle grinder rotates
I’ve been using an angle grinder for a couple of years now and during that time I haven’t got an answer to two questions: which way to put the cutting wheel and in which direction it should rotate. I searched all over the Internet, but did not find a definite answer to these questions. It was evenly divided. Both sides give convincing arguments, but no authoritative official documents are silent on the subject. The manufacturers are also silent. Today I want to reflect a little on this subject in order to determine, to begin with, the first question.
So, which side to put a cutting-off wheel on the angle grinder?
The essence of the question. In the center of the circle (either cutting or grinding) is a ring of galvanized steel, which has four punched holes around the circumference, usually with indented edges to prevent rotation of the ring with respect to the abrasive. The inner edge of the ring wraps inside the wheel, into its center hole, and ends flush with the opposite surface of the wheel, without going over it.
As the manufacturers say, this ring is made to protect the shaft that rotates the grinding wheel. Most likely this is its main function, otherwise the abrasive would eventually rub a groove on the angle grinder’s shaft when spinning the disc and it would be impossible to center it. Note that in the manufacture of circles, the ring is riveted during the pressing of the disk on top, after the entire pie of mesh and abrasive is formed. So, it does not have any technological function, as it was leaked somewhere in the Комментарии и мнения владельцев from an authoritative source. I’ve seen a number of different commercials for making circles and the process was about the same everywhere. the ring was pressed into the disk from above while the formed disk was being compressed by the press.
The ring is usually on the label side of the circle. However, there are circles in which the ring goes on both sides of the circle, and on some circles with a recessed center, it is located only on the side opposite to the label. That is, manufacturers mold the rings differently. Although, admittedly, most cup circles still have rings on the convex side, which kind of hints that it is still preferable to put discs with the ring down.
In the very beginning, after buying an angle grinder, I intuitively put the circle with the label facing outward. On that circle, the metal ring in the center was also pressed on the picture side. I sawed that way and had no problem. But then I had a cup-shaped circle (with a recessed center), and in it the picture and the ring were on the convex side. I put it with the picture facing out, and it turned out that the circle was scraping against the guard. I had to turn it upside down. That’s when I first had this question.
The other day, while watching videos on YouTube, I stumbled upon a discussion of this question and decided to find out for myself how to make a good circle? As I mentioned above, opinions on the Internet were equally divided on this issue. Then I began to work out my own point of view.
- Rings on circles, including cups, are molded on different sides, although more often they are on the convex side of the label.
- There is no indication of the direction of rotation on the circles.
Next, I looked closely at the washer and nut, between which the disc is attached to the shaft of the angle grinder:
On the left is the washer that is put on the shaft. It has a ribbed surface and a rubber ring at the inner edge. The nut on the right, although not polished, has a fairly smooth surface, which in the photo lies up. The disk should clamp between them. At first I thought that the ribbed surface of the washer looked like it was designed to grip the abrasive, and the smooth nut should slide well over the ring so that it could be tightened easily. But a little embarrassing was the rubber ring, which was obviously made to cling to the smooth surface, and would probably deteriorate if the sharp burr edge of the hole on the abrasive side often had to be pressed against it.
I tried both, inserting the disk between the washer and nut, and turning the parts by hand to see which part would grip the disk better. So, a washer with ribs and a rubber band in any case clings to the disk better, even for the ring, but the nut slides even on the abrasive. I also noticed that it is easier to put a wheel on a washer with a ring, because on the side of the abrasive there are burrs that prevent free putting the hole on the neck of the washer. So, the results of these experiments clearly show in favor of installing the disk with the ring down on the washer. That is, with the label downward.
I noticed one more thing. The clamping surface of the quick-clamping nut has a significant backlash relative to its thread, which allows it to clamp the grinding wheels, even if there are some irregularities on their surface. In this case, such a disc will be pressed flat. If you turn it upside down, it will lie with its abrasive on the washer at a certain angle, and it will have a transverse run-out. This is another argument in favor of installing the circle with the ring down to the washer.
Everything I’ve listed above stems only from the design features. Now a few words about practical convenience.
Not all angle grinders have such a quick clamping nut like mine. If it is a simple nut with keyholes, it is easier to tighten it with the wheel than with a wrench. It’s easier if the abrasive clings to that nut. That is, in this case, too, you should install the circle with the ring to the washer. It is also said that if the nut is adjacent to a metal ring, and when the wheel jams it, it becomes much more difficult to unscrew it than if it was adjacent to a crumbly inherently abrasive.
In general, after much deliberation, I came to the conclusion that the flat circle should be placed with the ring down to the washer, and if the disk cup, then you can put it in only one position, no matter what side it will be ring.
el_pir sent me the manual for the Metabo WP 850 angle grinder, which says in black and white:
It does not say whether it is a cup wheel or a flat wheel. Just a cut-off machine. So for all cut-off wheels. That confirms my point completely. All manuals for Metabo rotary screwdrivers also contain illustrations of (though it shows only cup wheels):
And the basic drawing on the covers of all Metabo grinders manuals also hints (although they also have cup wheels)Metabo deserves all due respect for the quality of its tools and I think you can trust the information in the manual (in case the Russian translation coincides with the English and German ones, of course, for there are translation errors, see the translator’s note. at the end of the p.6). So I think that for me this question is closed.
Which way the angle grinder rotates
In the last post we learned which way you should always hold the cutting wheel. Now I want to talk a bit about the direction in which the cutting wheel should turn and how to hold the angle grinder correctly?
Since I already had the manual from the Metabo angle grinder in my hands, I decided to see how this issue is described there:
Experiment Damage Angle Grinder Convert to Forward Reverse
That is, regardless of the material to be cut, because it is not mentioned, it is necessary to make a cut in the opposite direction. At the same time, I would like to point out from myself that you should cut with an angle grinder what is designed for cutting with an angle grinder. If you suddenly want to use the angle grinder contrary to its intended purpose, and cut, for example, profiled sheet metal or other similarly thin materials, which are usually cut with scissors, then it is already difficult and dangerous to saw in the opposite direction. That’s why I want to clarify once again that this manual only describes the intended use of the tool.
If you look at the close-up picture, you can see that this is the top view, and the work is done by a small angle grinder, although it is a common figure for all grinders:
Note how the body of the angle grinder is tilted. You don’t push the angle grinder forward, but pull it toward you. That makes it so much easier to hold.
So, the cutting direction must be towards the wheel’s rotation, because otherwise the wheel can jump out of the kerf and the angle grinder must be guided on itself. If the wheel bounces out of the kerf, the angle grinder can roll on it over the surface of the workpiece toward you, tumble in weak hands, turn around with the cutting wheel toward you, and cut you in half. If the disk is wedged and it also pops out destroyed, in addition to the above described, the inertia of rotation scatters its splinters to the sides. If the wheel is stuck when cutting against itself, it sinks into the cut and stops quickly, and most of the splinters remain under the workpiece, and the rest in the cover.
Often in this kind of counter cutting, the sparks fly to the person working and also block the cutting direction. And the splinters of the disk, if it breaks, will also fly in the direction of the sparks. What to do then??
I think that safety is more important than the ability to accurately control the cut. When cutting sheets, you can use a guide made of angle. When cutting workpieces, their cross-sectional dimension does not require constant monitoring of the cutting direction. As for sparks and possible wheel splinters, it’s important to learn how to hold the angle grinder correctly. In a workshop environment this is not difficult. Right hand on the additional handle, perpendicular to the body of the angle grinder, an angle of 100-110 degrees, that is, the right elbow is even further than the front edge of the wheel. The left one on the body with the button, parallel to the angle grinder. Angle grinder parallel to your body. Sparks should be flying past to your left. The cut is controlled from above and slightly to the right, over the additional handle. You should not be in the plane of rotation of the wheel at all.
In real life conditions, e.g. when dismantling metal structures, it is not possible to hold the angle grinder all the time in the manner described. There’s all the hope of a hood, a mask, overalls and intelligence. But you should always keep in mind the recommendations on the direction of rotation of the wheel and the guidance of the angle grinder. With each cut you must understand in what direction the angle grinder will tear when jammed, where the fragments of the wheel will fly, where the angle grinder itself, how it will tumble while doing so, and immediately change your position if you are not satisfied with the result.
In the economy very often you have to cut off pieces of long pipes, fittings, etc.п., that are lying on the ground. Raising them to vise level is often not possible. You have to saw on the ground, and even with a large angle grinder. How to be as safe as possible in this case?
For several years now I have been working with a big angle grinder with 230 mm circles from time to time. Naturally, I will always be inexperienced in this kind of work, so I would like to find the safest methods of work for myself.
The safest handstand with a heavy angle grinder seems to me. Right hand, as usual, on the additional handle, left hand on the handle with the button. My right leg, let’s say, is fixing the pipe on a wooden bar, pressing it from above, or just standing on the ground if the pipe is fixed. I bend down and put my right shoulder on my right knee. In this position I am in a similar position to the one in the workshop, but the weight of the angle grinder is not on my right arm and back muscles, but on the knee support. The left leg is back, the foot is turned perpendicular, adding stability, but it is not in the plane of the circle rotation.
How To Use An Angle Grinder. Ace Hardware
The above described stand is not always comfortable, e.g. if I need to make a deep cut of a wide pipe that cannot be rotated. Then I just stand so that the sparks fly back between my legs. In this case the control of sawing is made either from the left side of the circle or from the right (then the right shoulder again rests on the right knee). In the case of flying splinters, all hope in the above case only on the shield. But it is important not to give the wheel lateral forces, otherwise it will be torn from the shaft, ripping out its middle, which will remain under the nut, and it will jump off the angle grinder, continuing to rotate at breakneck speed. Because you are in the plane of its rotation, it can cut you in half by ricocheting off the part or the ground. I’ve had a wheel come off like that when I was sawing rusted bolts off a plane that I was lightly pressing down on with the wheel plane. Luckily, the wheel came off neatly and just went sideways.
A shield on an angle grinder is a must. At repair of cars often use small angle grinder with grinding or even cutting-off wheels without shields to get under was convenient. Suicides, what.
Goggles (namely protective, covering eyes from all sides) are obligatory. When you’re cutting or grinding, a lot of abrasive and metal is flying around, ricocheting off everything you can get your hands on. To dismantle metal structures at the site a mask is preferable, but only closed to prevent flying under it ricochetted sparks, and reinforced to keep the flying fragments of the circle at its destruction. The minus of the mask, it fogs up, bitch. But if you wear a respirator, which is important in the daily work, fogging almost does not happen Mask for grass mowing can not be used. It is open at the bottom and does not protect against ricochets of sparks, but rather catches them and causes them to ricochet back into the face. And yes, you have to use headphones or earplugs when working with an angle grinder every day, or you will quickly lose your hearing.
Gloves (preferably rough, suede ones). It prevents sweaty hands from slipping on the handle, and partially protects the fingers from splinters of the blade and flying shavings. Protect the skin from cuts by metal burrs, which are plentiful on the cuts of parts after the angle grinder.
Shoes without holes, preferably working, with a metal insert. How I hate workers in flip-flops with their toes sticking out naked or in socks! Are they comfortable to work in those shoes?? Well, not on the beach! A metal workpiece falls on your fingers and you’re screwed! I tripped over a severed metal socket and cut my foot with a metal burr! And it’s uncomfortable to walk in flip-flops! Where did this fashion come from.
A smock covering his whole body. Probably a leather apron against sparks. A helmet is mandatory when dismantling metal structures! There’s always something falling off and falling down!
Most experts on repair and construction work today are well familiar with the angle grinder, or, as it is also called by the people, the angle grinder. It is used for processing a variety of materials, which include stone, reinforced concrete, concrete, marble, and many others. At first, beginners may have a number of questions, among which the most frequent: how to properly install the drive on the angle grinder, how to mount the drive on the angle grinder, which side to put a disc on the angle grinder and in what direction should turn the disc on the angle grinder. Let’s try to give brief answers to all these questions.
And you shouldn’t do that! We often get accident notices for our industry (nuclear power) at work, and we have to get them against our signature. angle grinder, including the fatal one, is far from being the last source of danger.
And you shouldn’t do that! We often get accident notices at our place of work (nuclear power industry), and we have to get them signed for. an angle grinder, including fatal ones, is far from the last source of danger.
I agree if you saw off your head with it, or get into the bathtub with it on, or even put your fingers in the socket instead. Look closely at the rotation of the circle, and then try to describe, from the point of view of the laws of physics, the possibility of giving such energy to HALF OF THE CIRCLE! Do not confuse a grain of sand from this circle, moving at a speed of 60-70 m/s, and even then on a new circle. This post was edited by boatman: March 15, 2012 19:55
Operations that can be performed with an angle grinder
The angle grinder is a multifunctional tool. The drive mechanism in it is an electric motor, which through a gearbox transmits motion to the shaft with a removable nozzle attached to it. General view of the device is shown in the photo below.
There are models on the market, differing in power and design:
Professional large angle grinder 230mm Stern AG230B
Powerful devices are powered from three-phase voltage of 380 V, and household. from a single-phase 220 V. There are also low-power cordless models.
Angle grinder (angle grinder) can do the following basic types of work with different materials:
If you fix the angle grinder stationary, you can grind different tools on the wheel: cutters, drills, knives, etc.
angle grinder is designed to work with such materials:
angle grinders are widespread in both domestic and industrial applications. This is due to their wide functionality, due to the following factors:
- A large selection of different nozzles made of different materials to perform various operations;
- the possibility of fixed fixation with special fasteners;
- availability in some models of additional handles and several speed modes of operation.
It must be remembered at all times that only special discs are used for processing each material.
Which side to put the disk on the angle grinder
In most cases, the abrasive for the angle grinder is installed only in one direction, but in the situation when working with stone or concrete, the process changes. Therefore, it is necessary to consider these cases separately.
How to correctly place the wheel on the angle grinder. two factors affect it:
- Any abrasive has a special label glued on it that shows the side it should be attached to the angle grinder. If the angle grinder works away from the operator, as it should in most cases, then the disk should be installed with the label inside. When the angle grinder works in reverse, the label is on the outside.
- Of course, you can put the abrasive on either side without paying attention to the label. But in that case you must expect unpredictable results, such as disc breakage.
Important! Experts assure that if you do not comply with the requirements of disk installation, then the angle grinder will one day jam, the disk can break apart, injuring the operator working with the tool.
For other materials
When working with concrete or wood angle grinder should rotate the disk in the direction of the person holding the angle grinder. In this case, the label must be directed outward. These are isolated cases, and in most other variations, the grinder works away from the controlling.
#x1f4bf; Mastering a useful power tool: 5 basic secrets of working with an angle grinder
Angle grinder (angle grinder) has a fairly wide range of applications. Welding works, installation of all sorts of frameworks made of reinforcement, including the pouring of strip or slab foundation cannot do without it. Even the arrangement of the ground loop in the yard of a private house involves the use of such an electric tool. However, it is worth remembering about the rules of safety when working with it. Today we will consider 5 basic secrets of working with the angle grinder, which will help protect the home master from possible injury.
What to do if the nut is jammed on the angle grinder
Angle grinder is a pretty popular tool that is often used in the home for sawing wood, metal or stone. When using such angle grinders for a long time, people often encounter a clamping of the cutting disc. This leads to the fact that the tool begins to work many times worse. To cope with such a problem, it is necessary to understand in advance how to unscrew the nut on the angle grinder and what to do.