For many building and renovation tasks, whether you’re polishing, grinding, or cutting, an angle grinder is a need. But a common issue you may run into is a stuck or "bitten" nut. This can be a major pain, particularly if you need to change the disc or make adjustments while working on a project.
It can feel as though your progress is coming to a complete stop when the nut on an angle grinder becomes stuck. Wear and tear, debris accumulation, or overtightening can all be the cause of this problem. It’s imperative that you know how to handle this circumstance skillfully to protect both your safety and your tools.
We’ll go over how to use an angle grinder to safely and effectively loosen a stuck nut in this article. We have you covered for both basic methods you can try at home and more complex ones that might call for additional tools. You can maintain your equipment in good operating order and your project on schedule by adhering to these tips.
| Step | Action |
| 1 | Unplug the grinder |
| 2 | Use a wrench to hold the spindle |
| 3 | Try to turn the nut counterclockwise |
| 4 | If stuck, apply some lubricant |
| 5 | Gently tap the nut with a hammer |
| 6 | Use vise grips if needed |
| 7 | If still stuck, consider using heat |
| 8 | Let the grinder cool before reassembly |
- Why does the lock nut tighten?
- How to remove a disc clamp on an angle grinder
- Open end wrench and socket head
- Warming up the latch
- Removal with a gas wrench
- Perforator or drill in detection mode
- Tapping the nut
- Disk corruption
- Video on the topic
- How to Unscrew the NUT on a Grinder / Grinder Disc Stuck
- How to unscrew the disc of an angle grinder (ushm) | The nut on the grinder is bitten, how to unscrew it
- THIS METHOD will help QUICKLY UNCLOSE a jammed nut on an angle grinder
- How to unscrew the nut on an angle grinder disc if it is bitten
Why does the lock nut tighten?
Foremen who use angle grinders on a regular basis almost universally report experiencing the nut on the cutting disc tightening. Determine the cause of the latch’s tightening before attempting to remove it with a key.
The grinder’s disc has a maximum rotational speed of 12,000 rpm. It faces significant resistance when it comes into contact with an iron or stone surface. As a result, there is a noticeable decrease in rotation speed. The rotor keeps rotating in the same direction at the same time. This allows the nut to be clamped so firmly that an ordinary wrench used to unscrew angle grinder discs will not be able to loosen it.
Extra Details! Do not attempt to unscrew the nut by hand if it remains in place. You should familiarize yourself with the suggestions so that you can easily unwind it.
If you find yourself stuck with a jammed nut on an angle grinder, don"t panic; there are several straightforward steps you can take to fix it. First, unplug the grinder for safety, then try using a wrench to gently tap the nut loose. If that doesn"t work, applying a bit of penetrating oil can help loosen the grip. For more stubborn nuts, heating the nut slightly with a torch can expand it and make it easier to remove. Finally, if all else fails, consider using a nut splitter or a rotary tool to carefully cut it off. Taking these measures can save your grinder and get you back to work in no time.
How to remove a disc clamp on an angle grinder
There are multiple expedient methods for promptly extracting an angle grinder’s tightened clamp.
Open end wrench and socket head
If the latch is firmly secured on the angle grinder, an open-end wrench and a socket head can be used to loosen it. This is a general technique that works with the majority of instrument models. You can take the wheels off of angle grinders made by Bosch, Zubr, Interskol, Makit, and Aeg by using this technique.
You must first figure out which way to unscrew the grinder before utilizing this method. Really, there is nothing difficult about it. It is best to turn tools in opposite directions from one another. Under the abrasive is where the key is installed. The flange is fixed to the socket head. The nut ought to be removed with ease after turning these instruments. You’ll need to take an alternative approach if it doesn’t begin to unscrew.
Warming up the latch
You can use the clamp’s heating feature to remove the fixed disk nut if the preceding method was unsuccessful. This is a more efficient method of loosening a nut that might have tightened during the angle grinder’s operation.
The fixing element can be heated with a torch or a hair dryer. Once the part has heated up, it needs to be unscrewed right away. Removal of a tightened nut will only be possible when it is "hot."
Extra Details! This approach is incredibly successful. It needs to be used cautiously, though. The gearbox may sustain damage if you unintentionally cause damage to the tool body while it’s heating up. In this scenario, you’ll need to either fix it or buy a new one.
Removal with a gas wrench
It is possible to tighten the nuts on Makita tools to such an extent that heating does not release them. In these circumstances, you may attempt to use a gas key to pry open the latch. Sometimes it’s easier to remove a tightened part with the aid of this tool.
You have to keep an eye on the efforts made with the gas key. Don’t apply too much pressure to the tool. Therefore, there won’t be any way to harm the latch. You will need to find alternative methods to remove the disc clamp in case you inadvertently damage it.
Perforator or drill in detection mode
If the disk gets bit, a lot of people don’t know how to remove the nut on the grinder caliber. You can use a perforator or drill that has a deterrence mode in this situation.
The primary benefit of this technique is that it cannot harm the Ushm when used. Because of this, this technique is most frequently used to loosen a nut that has become extremely tight.
You must put a 6-7 mm drill into the tool in order to break the lock. It is supported by the clamp’s extremities. The drill needs to be turned on for two to three seconds after being inserted. This is sufficient to end the communication.
Extra Details! Make sure the angle grinder spindle is securely fastened before starting the drill.
Tapping the nut
Only in severe situations, when all other attempts have failed to remove the nut, is this method employed. You must first prepare a small iron rod or chisel in order to remove the lock. After the spindle head is firmly in place, use a hammer to lightly tap the clamping hole edges. The part should move to the side after a few taps. It can now be unscrewed using a standard key.
The tool’s mounting hole could be damaged if you strike the hammer too forcefully.
Disk corruption
Destroying the disk is another method for removing the nut. You’ll need the following equipment to accomplish this:
- vice;
- pliers;
- sheet metal.
To break the disc with pliers, you must first bite it in a vice. The next step is to start the grinder and clamp an iron sheet into a vice. A fixed sheet of metal needs to be passed over several times by a rotating circle. Following this, the plate’s remnants will crumble and the nut will be simple to unscrew.
It can be an annoying and time-consuming issue if you bite the nut with an angle grinder. But, if you use the appropriate methods and resources, you can frequently resolve this problem without endangering your equipment further.
To start, make sure the battery is removed or your grinder is unplugged to prevent any mishaps. To attempt to loosen the nut, use a wrench or other specialized tool. Any rust or debris that might be causing the nut to stick can also be broken down by applying some penetrating oil.
You may need to apply additional force if the nut is still stuck. You can use a hammer and chisel, but take care not to break the threads. If everything else fails, you might want to use a nut splitter or get professional assistance for your grinder.
By keeping your angle grinder clean and lubricated on a regular basis, you can avoid future nut jams. Maintaining your tool properly not only increases its lifespan but also guarantees safe and effective operation.
