What is an Angle Grinder?

What is an Angle Grinder?

angle grinder

The electric angle grinder is used to grind, cut, remove rust and polish the metal components by using the high-speed rotating sheet grinding wheel, rubber grinding wheel, steel wire wheel and so on. The angle grinder is suitable for cutting, grinding and brushing metal and stone. Do not use water during operation. You must use a guide when cutting stone. For models equipped with electronic controls, grinding and polishing operations can also be performed if suitable accessories are installed on such machines.


Structure of Angle Grinder

Drawing number Part number Part name Quantity Price code Remarks



001 stator assembly 220V
002 Windshield
003 Labyrinth rubber ring 19
004 bearing 607LLB
005 insulating washer
006 Rotor assembly 220V including parts. 4,5,7
007 wind blade 56
008 Gearbox cover
009 O-ring 26
010 bearing 629LLB
011 spiral bevel gear 10
012 Hex nut M6
013 lock pin cap
014 Compression spring 8
015 Self-tapping screw M4X30
016 O-ring 5
017 lock pin 4
018 gear box
019 Rubber column 4
020 bearing 696ZZ
021 retaining ring S-12
022 Wave Washer 12
023 Spiral bevel gear 37
024 Retaining ring R-32
025 bearing 6201DDW
026 Flat washer 12
027 O-ring 45
028 bearing housing

029 Round head screws M4X14
030 labyrinth washer
031 key 4
032 spindle
033 round head screws M5X14
034 Grinding wheel cover contains parts. 33
035 inner pressure plate 42
036 Lock nut 14-45
037 Self-tapping screw M4X80
038 Nameplate 9558NB
039 Self-tapping screw M3X10
040 carbon brush holder
041 carbon brush CB-325
042 switch seat
043 switch DPX-2110-R
044 Power cord clamp
045 Self-tapping screw M4X18
046 capacitor
047 Power cord sheath 8
048 Power cord 1.0-2-2.5
049 Switch button
050 motor housing
051 carbon brush holder
052 Compression spring 4
053 Switch lever B
054 rear cover
055 Self-tapping screw M4X18
A01 Side handle 36
A02 Lock nut wrench 35

Common Uses of Angle Grinders

Cutting DerustingPolishing

The cut Off Wheel (What is a Cut Off Wheel?) uses resin as the binding agent, glass fiber mesh as the bones and bones, and combines a variety of materials, with high tensile, impact and bending strength. For alloy steel, stainless steel and other difficult-to-cut materials, the cutting performance is particularly significant.

For metal rust after oxidation due to various environments, there are two kinds of special tools for polishing, copper wire brush and stainless steel wire brush. The rust removal efficiency is very high.

Abrasive Cloth Wheel (louver wheel) is suitable for the grinding and polishing of various irregular profiles and ordinary planes. Excellent for surface polishing or grinding in holes. The difference lies in the number of blades and the materials such as brown steel jade (weld seam grinding), silicon carbide (metal or non-metal grinding), and steel paper louver sheet (derusting).

Factors to Consider When Buying an Angle Grinder

With so many brands and models to choose from, buying the best angle grinder can seem like a tedious task. This section is designed to help you choose the right product for your needs. You must consider factors:

  • Grinder type:There are various types of grinders available. This includes benchtop grinders, which, as the name implies, are fixed on a workbench to provide maximum control. Another common type of grinder is the portable type. These grinders are usually smaller and more convenient than bench top grinders. Portable grinders include die grinders and angle grinders.Angle grinders are easier to operate and have a variety of properties. These tools can be used for sharpening, cutting or smoothing in various other activities. For one-handed operation, it is best to choose a mold grinder. This type of grinder has smaller blades and can work at higher speeds. This makes it ideal for working in tight spaces.
  • Weight:Angle grinders are available in various weights depending on the model you choose. Although some designs are lightweight, others may be heavier than others. Choosing the right weight varies from person to person, depending on your personal strength.Sometimes even a light grinder feels heavier after a while. Buy a grinder of the right weight to ensure easy operation.Choosing the right weight will help you get the job done without difficulty. Ideally, choose a grinder that is not too heavy or too light.
  • Size:Before buying, be sure to consider the correct size of the grinder. Generally, larger grinders are best suited for larger and more difficult jobs. Remember that the size of the grinder is not determined by the total length of the machine, but by the type of disc used.Larger wheels can accommodate larger wheels, making them suitable for large jobs. Most professionals choose a larger grinder because it makes it easier for them to complete difficult tasks.However, you can also choose a smaller grinder. This type of grinder rotates at an amazingly high speed, so it gives you enough power to cut polished metal. Use the appropriate size based on the job type of your choice.
  • Handle:The handle is the part of the machine you most often touch. Consider buying an angle grinder with adjustable side handles. This feature is especially useful if you want to use multiple people at the same time, because it can accommodate right-handed and left-handed people. The more locations a machine can provide, the more possibilities there are some brands also offer grinders with anti-vibration handles. In this way, people can use the grinder for several hours without feeling uncomfortable. The shock-resistant handles also help reduce fatigue and make you feel more comfortable.Buy a grinder with a comfortable handle. This will give you the opportunity to fully control the machine while achieving operability. This will also allow you to work with minimal stress.
  • Disc size:Handyman can choose from various disc sizes. Generally, larger discs are equivalent to more powerful computers. However, smaller disks can provide greater accuracy and outperform larger models when performing smaller jobs. Invest in the correct disc size based on the task you are performing.
  • Motor Power:Like other power tools, wattage, amps, and voltage ratings vary depending on the grinder. Most people prefer to buy tools between 500 and 2500 watts, and the ideal amplifier is rated at 4 to 15 watts. However, it depends on the type of task you want to perform.If you want to buy a grinder for housework, you can choose a lower rated device because you don’t need a powerful motor. However, if you plan to perform heavy tasks, choose a machine that provides sufficient power. In general, heavy-duty angle grinders provide more power, so you can easily perform different types of projects.
  • Speed ​​grade:In fact, speed is one of the most important factors to consider when determining the size of a disc. After all, you want to buy a machine that can run fast so that you can perform tasks quickly without any hassle.Generally, manual angle grinders have discs that can rotate between 5,000 and 10,000 revolutions per minute. A higher speed enables people to perform a variety of grinding, cutting and grinding tasks. However, powerful equipment can increase the risk of injury if the machine is accidentally operated. If you are a beginner, make sure you follow proper safety measures to avoid accidentally cutting yourself.
  • Comfort:That said, comfort is an indispensable factor when buying a power tool, especially if you plan to use the device for a long time. Choosing an uncomfortable machine may prevent you from completing your task. Generally, two factors determine the comfort of a grinding machine, namely weight and size.If you’re doing smaller tasks, it’s best to choose a compact device so you don’t get tired after a while. In addition, some grinders may be more comfortable because they have shock-resistant handles that take comfort to a whole new level.
  • Wheels and accessories:Grinding wheels and accessories play an important role in helping you choose a right-angle grinder. This is because the grinder is a versatile tool that allows you to change discs as needed. You can also change wheels and other accessories as needed.
  • Safety:Remember, safety comes first! You obviously don’t want to invest in machines that could cause injury. In addition, the grinder is at a higher risk of injury than other tools in your home.It is important that you familiarize yourself with appropriate safety precautions before using the grinder. For added safety and comfort, it is best to choose a grinder with additional features, such as eye masks, to prevent flying debris from penetrating the eyes.

Also, before you actually install, make sure you know how to use the machine properly.

How to Use an Angle Grinder?

Photos Operating procedures
1. Disassembling the cutting wheel: Unplug the power plug, hold the grinding disc with your left hand, and use the special tool or other tool card in your right hand to focus on the disassembly hole on the cutting wheel pressure block. Turn it counterclockwise to remove the cutting wheel. Install the cutting wheel in the same way.
2. Angle grinder switch: push forward, the angle grinder starts to run, release the switch back to the original position, the grinder is turned off, at this time you need to keep your fingers hard. Push forward, and then press the switch with your finger, the angle grinder will run and the switch will be fixed. At this time, you can release your finger and the angle grinder will still run.
3. Placement of the angle grinder: When the angle grinder is placed, the protective side must be facing down. It is forbidden to directly place the grinding wheel on the ground, especially when the angle grinder is still running.
4. Use of angle grinder: Use the unprotected side for grinding. The surface of the grinding wheel and the workpiece are at an angle of about 30 °. Press your finger on the switch to facilitate turning off the grinder at any time. When sanding, you must wipe your hands with less oil to prevent the sander from hurting your hands.
5. The angle grinder is used for various purposes. It can be used for grinding, polishing, trimming and other work of different materials with different grinding wheels.


  1. Check the integrity of the wires and the shell of the angle grinder before use to ensure insulation.
  2.  Wear goggles during use.

Angle Grinder Safety Operation Code

  1. Wear protective equipment such as masks, protective glasses, earplugs, gloves, etc. before work. Do not wear loose clothes and accessories.
  2. Check whether the switch is in the off state (“OFF” position), whether the power cord is intact, without damage, good insulation, and whether the three-pin plug is intact.
  3. Check if the grinding wheel protective cover is installed firmly and other fastening screws are not loose.
  4. Before installing the angle grinding disc, it should be checked that the grinding disc is free of cracks, fragments or other defects. Before installing and recognizing the front and back of the grinding disc, you must tighten the screws of the fixing disc after checking.
  5. Before the machine is milled, make the trial run of the grinder without load. Only use it if there is no abnormal sound or vibration.
  6. When changing the grinding plate, the switch should be turned off (“OFF” position) and the grinding machine should be completely stationary before the grinding plate can be replaced with a special wrench.
  7. After two hours of use, the angle grinder must be replaced with another one. The two are used alternately. It is strictly forbidden to continuously use the specified time to ensure the life of the angle grinder.
  8. When in use, do not press the angle grinder wildly, just hold the grinder gently to make it contact the grinding surface.
  9. Do not drag the wire to move the mill or pull the different plate to pull out the plug. The workpiece is strictly not allowed to be pressed on the wire. Sparks generated during grinding cannot be aimed at people.
  10. During use, if any abnormality is found, report it to the maintenance staff for repair.
  11. After the work is completed, turn off the power, clean up dust, impurities, and arrange the power cord.

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