Angle Grinder Parts

Angle Grinder Parts and Their Applications

If you are new to the world of angle grinders and get your bearings straight on what they can do, this guide can serve as a good starting point for you. If you have already identified the things you should be looking at as a potential buyer shortly, this guide can serve as reference material. Here is a list of essential angle grinder parts and their functions.

List of Angle Grinder Parts

Let’s look at them one by one.

angle grinder parts

1. Power Switch

The power switch is the primary control of the angle grinder. It has three positions according to the cutting tool that it serves: ”on,” “off,” and “on with workpiece.” This means that when you turn off the grinder, it stays in this position until something engages into its handlebar of one or more cutting tools. Sharper grinds are needed when grinding metal, which can only be done with the grinder. If a tool is engaged into the power switch, the grinder will not work until you disengage it (by turning off or cutting process).

2. Air Filter

The air filter helps to reduce dust in the angle grinder, which can accumulate and get back-sucked into your machine’s motor. Without an air filter, grinding metal with abrasive cutting tools can lead to excessive wear on your machine’s power wheel as well as the grinding wheel itself. The grinder can work without the air filter, but you might end up cutting the handheld power tool component or damaging your angle grinder with abrasive cutting tools that get stuck in its internal motor parts and make it overheat.

3. Lock button

This is a power switch that enables the workpiece to cut. So, when ”’engaged to workpiece”, the grinder will not stop until you disengage it and run out of the power wheel’s grinding wheel with sharp abrasive tools like a saw blade or whatever.

4. Speed Control

This dials the speed of the grinder. The higher it is set, the more power you get but with much noise and heat generated by your machine. When grinding metal objects in woodworking machinery, this setting should be changed to ”narrow settings” and etc.

5. Main Handle

This is the handle that turns and helps you move around your grinder while maintaining control – turning down or cutting off, changing speed dials, or engaging/disengaging tools. The central rotating part of a grinding machine consists of two permanent disks pinned together to form one full gear. The 5 gear have five ‘teeth’, which are then permanently pressed in at 90-degrees from each other for strength, unlike cheaper electronic alternatives, which are bolted in twice. The abrasive wheel assembly spins freely on a flat surface when grinding, with all gears rotating at the same speed and are meshed together solidly to make sure it doesn’t fall apart.

6. Side Handle

angle grinder parts

This is the handle that moves from side to side with a dimpled panel in order to push and pull materials through. On more expensive electronic alternatives, this may be replaced by an electronic ergonomic joystick or slider pad sandwiched between two pressing buttons for fine adjustment of speed, but on conventional grinders, it remains standard fare for safety reasons alone. However, it should not touch down when moving up and downhill if you intend to close its stone doors For example, turning Knob, turning knob is used for controlling a grinding machine. This makes it easier to rotate the wheels and shift speed dials without having to lift from your seat, door or putting both hands together in an awkward position on top of each cranked wheel.

7. Body

The body of the grinding machine is, in fact, wider than it has to be and often does not need a single gear assembly. In an older model, two or more wheels would turn together on one axle rather than splitting apart with separate moving gears like modern grinders, which are shallow profile, so they don’t take up much space. That’s fine if the pressure on the wheels is relatively low and if grinding power is at a medium-high setting, but not so good if you try to grind with more aggressive settings or just want to experiment. In that case, you end up in search of ‘High speed’ or even ‘Very high.’ wide range versions switch over smoothly and will run for ages before needing service.

8. Motor

Some grinders will have a very unbalanced gearing characteristic that turns miles per hour for high speed, resulting in total production not matching. What does this mean? For example, if you set up the grinder motor to run at 6mph and put 400 grit paper into its hopper, it would work fine on some models. On other models, though, although they can do exactly the same amount of ground, they would produce much less quality work at the same speed. That might be a waste of time and effort, but in any case, you get no finer than ‘cut.’

9. Spindle

Almost all grinding machines require a tool spindle to secure the paper in place during use. This can be removed with just one hand and is called an “Extractor” or ‘Tarpaulin Spindle Kit.’ A tarpaulin spool will give you superior stability while using abrasives, which are more likely to damage it than a screw-on axle would.

10. Blade Guard

Provided you are using something appropriate to use as a paper feed, other than just straight up a newspaper or small sheet-like pieces of plywood (AS), the risk is that one particle from your feet would hit the blade in such a way as to cause it damage. For this reason, some machines have ‘blade guards‘ that curve around just behind and above the blade itself. Unfortunately, clamping down on loads of abrasive material with anything but your fingers, or a couple of large screws (and to secure it even that’s problematic), can easily damage the blade. 

11. Power Cord or Battery

If you don’t use shop-machinery floor space, it needs electricity. Fortunately, most small jobs can be ‘walked away’ to at the very least log car and battery hooks on the wall behind a workbench – never mind that power is always sometimes really handy in between cuts anyway (for things like air tools).

Parts of High-Quality Angle Grinders

Anti-vibration Handles

They effectively prevent severe finger aches, but it’s amazing how many ground-based electrical tools still leave the user with numb and painful fingers from vibration. This caters to that by making sure a handle is provided for both comforts during operation and emergency protection against damage caused by an accidental power on-off switch outlet.

Slim Case

It’s nice to have a tight-fitting case for protection. Additionally, this also keeps down on heat being generated inside, which is vital in keeping the life and durability of both internal “seats” and any electric motor used that are not electric tools themselves.

Dust Ejection

A good angle grinder should have a powerful dust ejector to help keep the work area clean. This is especially important if the angle grinder is used for grinding metal, which can produce a lot of dust and debris. Also, while the metal-grinding process can be dangerous in its own right, having the correct safety clothing and eye protection can help prevent accidents.

Pop-Off Brushes

The replacement of brushes regularly is one of the routine maintenance routines for a simple tool. This can be very tedious or costly, which also relies on luck, but this system uses an air-compressed spring to remove it from its location and then drop it into place with relative ease.

Overload Protection

An extension or other overload protection is a must-have feature if you plan on doing any finished work with this machine. This can come from the way that it operates, such as limiting itself and shutting off after 25% of its RPMs have been reached and going into an acting mode to help protect both the electric motor (which in turn prevents damage) and also, more importantly, to minimize user injury by inspecting for overloading before starting up again.

Quick Grinding Disc Release System

It can save your life and be a very effective system. First of all, one must have the ability to get away while being in use, so this comes highly recommended where possible and can also benefit people who make any professional trade.

Sealed Bearings

They are Always crucial in defining the quality of a versatile tool; this also helps by keeping or decreasing dust and other elements from entering into contact with rotor-bearing components. This can affect longevity, but so can temperature for reasons like ice forming on moving parts being used at too hot temperatures, only to damage and destroy without warning.

How to Assemble an Angle Grinder?

Assembling an angle grinder is a very simple task. Just carry out the appropriate set of steps outlined below:

  • Strip the stem of its outer casing by unscrewing it.
  • Remove all the screws from the central housing unit with three bolts and two nuts.
  • Check for any other screws or components that can be removed.
  • Prevent any component involving rotating parts as they might be electrically charged and with low-voltage components.
  • Check the ground clips from each circuit connection, including ensuring there are no short or other possible electrical hazards in place near those circuits.
  • In some cases, further levels of operating switches may have to be adjusted additionally.
  • Perform all current checks through no-load and service any components of high-voltage nature in contrast, including battery terminals.
  • Don’t forget your safety glasses!


How do you change the blade on your Angle Grinder, and how does it work in detail?

As far as changing blades is concerned, you need to turn off your machine first before even attempting this, but only if you could locate any switch settings that may affect such operations in principle: lower than 80% power or equivalent settings should be done.

What are the benefits of using an angle grinder for home projects?

The main benefits one could expect from using such a tool are easy alteration, reduced kitchen storage space, and aesthetics outcome, so if you run into any counter-structural purposes involved or successfully undertaken, other benefits suggested through connections include DIY jobs’ needs showcasing with the exact requirements (“Did you change this light switch?”), simple rust removal of old plaster in the bathroom or application tasks like wall components, shelves, etc., handy uses for creating gauges and molding stencils.

Which one should I buy, a router or an angle grinder?

As far as router impact is considered, one would be comfortable buying an angle grinder without any other doubts. Forgetting the fixtures or enhancements a router or angle grinder offers, with an older model now having changeable blades and hand wire brushes essential for constant maintenance, you could try using them as long as it will still perform basic tasks like fitting glass just in case.


When it comes to buying an angle grinder, the number of options available can be overwhelming. To help you decide which one is best for your needs, we’ve created a list of the most common angle grinder parts and features that every angle grinder should have. With this guide, you’ll know exactly what you’re getting when you purchase an angle grinder and will be able to assemble it easily once it arrives at your house. Hope this blog was helpful for knowing angle grinder parts.

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