Types of Angle Grinders: Uses, Discs, Sizes and Wheel Types

Most people associate angle grinders with flying sparks seen in metal workshops or in large construction sites. I assure you there’s more to angle grinders than that.

When it comes to versatility, angle grinders can really do a lot.  They are handheld power tools that can perform different tasks ranging from metal cleaning, polishing, and sharpening cutting edges, to cutting objects such as bars and rods, pavers, stone, concrete or even removing old mortar.

The abrasive disc on the angle grinders is responsible for cutting through the various substance. Although the discs look similar, they’re designed for different cutting tasks.

Angle grinders got their name from the task that they are mostly used for. When you turn the angle grinder, you can use the edge to make really deep cuts on different substances. However, the flat end of the disc can also be used for polishing and wearing out different materials.

Although the abrasive disc can cut through any material, they are best used on hard materials such as metals and stones. Using them on soft materials such as wood will cause the material to melt or catch fire because they won’t be able to withstand heat buildup during cutting. For cutting wood we recommend using a miter or a circular saw

Angle Grinder Uses

While the angle grinder is widely used in metal workshops together with drill presses for drilling through metal and construction sites, it also finds a lot of uses in the home, a service garage, or an auto repair shop. There are many things to do with an angle grinder.

angle grinder metal work

There will always be the need for you to cut to through a hard material either to perform emergency rescues, to manufacture another object, to make things fit into trash bins more conveniently or to sharpen and polish your garden tools.

What is an angle grinder used for

  • Cutting steel bars or rods, metal sheets, bolts, and screws.
  • Sharpening cutting edges of garden tools such as axes, shears, shovels, and other chopping tools. This same job also can be done with a bench grinder.
  • Cutting pavers, bricks, slab blocks, tiles, and also rooting out old mortar.
  • Cleaning rust, paint and caked-up cement from metal surfaces. For example, cement mixers, gates, and fences, trowels and spades etc.
  • Shaping objects and materials. You need some level of expertise to achieve this.

Types of Angle Grinders

There are four major types of angle grinders, each having their own peculiarities, pros and cons. Selecting the correct angular grinder for a job will make you carry out the job more efficiently. polishing.

Electric Angle Grinders

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Metabo WP9-115 Quick 8.5...
61 Reviews
Metabo WP9-115 Quick 8.5...
  • Metabo LongLife motor with up to 50% more torque for quicker material removal, up to 20% higher overload capacity
  • Suitable for AC/DC operation
  • Dead-man paddle switch function provides immediate shutdown of the motor when the paddle switch is released
  • Metabo S-Automatic safety slip clutch helps the user to maintain control if the accessory jams reducing the likelihood of kickback
  • Metabo Quick System: the fastest tool-free disc change system at the touch of a button
Makita 9557PBX1 4-1/2'...
573 Reviews
Makita 9557PBX1 4-1/2"...
  • Powerful 7.5 AMP motor for high output power in a more compact tool (only 4.5 pounds)
  • Small diameter barrel grip (only 2 to 1/2 inches ) for added comfort
  • Labyrinth construction seals and protects the motor and bearings from dust and debris for longer tool life
  • Lock on/off feature for continuous operation
  • AC/DC switch for use with alternative power source
SKIL 8 Amp Corded Angle...
34 Reviews
SKIL 8 Amp Corded Angle...
  • Powerful- with an 8 amp motor, This grinder is able to handle big and small household tasks.
  • More Control- the 3-position side handle allows greater control in multiple positions.
  • Easy guard adjustments- No tools are needed to adjust the safety guard position.
  • Safety lock- This grinder is equipped with paddle switch safety lock which prevents accidental start-up.
  • Convenient storage-wrench storage is conveniently located in the side handle. Never search for the wrench again.
Makita GA4030K 4' Angle...
74 Reviews
Makita GA4030K 4" Angle...
  • The product is 4" Angle grinder kit
  • Easy to use
  • The product is manufactured in China
  • Powerful 6.0 AMP motor delivers 11,000 RPM for the most demanding applications
  • Small circumference barrel grip (only 2-1/4") for added comfort
Bosch 4-1/2-Inch Angle...
147 Reviews
Bosch 4-1/2-Inch Angle...
  • COMPACT: Weighing only 3.75 pounds, the Bosch 1375A Angle Grinder is lightweight, compact, and ideal for metal workers, vehicle fabricators, plumbers and other professionals who use grinders on a daily basis
  • POWER: The angle grinder features a powerful 6.0 amp motor to produce 11,000 no load rpm for professional cutting and grinding applications. The efficient motor was designed with an extremely small field diameter, letting the user grind or cut with ease
  • COMFORT: The 1375A offers a two position side auxiliary handle specifically designed to angle to a natural position for maximum operator comfort. The top handle of the angle grinder is also ergonomically designed
  • CONVENIENT: The angle grinder also features Bosch's Service Minder Brush System to eliminate guesswork and stops the tool when preventative maintenance is required. A 5/8 In. to 11 inch spindle works with a wide array of sizes, mounting the most popular accessories
  • DURABLE: The 1375A angle grinder features an epoxy coated design to protect the tool from abrasive debris. It was also designed with a sealed switch to keep dust and debris from entering the switch mechanism

This is the most common type of electric angle grinder, it makes use of electric power to operate the motor. Due to its popularity, many electric angle grinders from different manufacturers are available in the market.

Since they are powered by electricity, they can only be used where you have a nearby electrical outlet. So, getting an electric angle grinder with enough cord length is essential, however, you can extend the range with an extension cord.

With an electric angle grinder, you can work for many hours without interruptions as long as you’re always connected to electric power. Large angle grinders will most times be electric and more powerful, making them require an additional handle to support the tool during operation.

Pros

  • Unlimited Runtime
  • Powerful
  • Easy to use

Cons

  • Corded

Battery-Powered Cordless Angle Grinders

Battery operated angle grinders run on battery, so they don’t require electric cords. This ability makes it easier to move them about during operation and transportation from one work area to another. You can use them in high locations without having to bother about the proximity of an electrical outlet.

However, these portable angle grinder with cutting disc have limited run time before the batteries need to be replaced or recharged. How long a battery lasts depends on the type of the battery and the voltage capacity. Lithium-ion batteries are more preferred to Ni-cad batteries because they last longer and can be recharged easily.

It’s better to have a backup battery if you’re opting for a battery-powered angle grinder so you can use it while charging the replaced one.

Pros

  • Easy to control and maneuver
  • Unlimited work area range

Cons

  • Less powerful
  • Limited runtime

Pneumatic Angle Grinders

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Ingersoll Rand 3445MAX...
18 Reviews
Ingersoll Rand 3445MAX...
  • 0.88-horsepower air motor delivers 12,000 RPM for impressive performance and greater material removal
  • Internal governor maximizes speed under load, thus increasing productivity
  • Enhanced grip design and lightweight construction increases comfort for extended usage
  • Built-in lubricating wick optimizes the life of the angle gear set by improving lubrication to the pinion and bevel gear set
  • Features a 6.4-meters-per-second-squared vibration level
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Neiko 30070A 7' Heavy...
19 Reviews
Neiko 30070A 7" Heavy...
  • Seven inch angle sander has a free air speed of 4500 RPM and is ideal for roughing body filler, buffing, removing rust or smoothing welds
  • Includes heavy-duty ball bearing construction that provides reliable, vibration-free performance
  • Lightweight, balanced design helps to reduce fatigue and muffled exhaust helps keep decibel level low
  • Sander uses a standard 1/4" NPT air outlet to an air compressor and can be used for buffing, sanding or grinding
  • Auxiliary side handle can be switched for right and left hand operation allowing for ambidextrous use
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Ingersoll Rand 422G...
25 Reviews
Ingersoll Rand 422G...
  • Locking lever with tease throttle
  • Front exhaust
  • Ergonomic Grip
Central Pneumatic 4' Air...
8 Reviews
Central Pneumatic 4" Air...
  • Contoured throttle lever for versatility and control
  • No load speed: 10,000 RPM
  • Meets ANSI specifications;
Freeman FAT5AG Pneumatic...
2 Reviews
Freeman FAT5AG Pneumatic...
  • Ideal for removing rust, smoothing welds, polishing, and light cutting jobs
  • Powerful grinding performance with a free speed of 11,000 RPM
  • Hardened steel bevel gears and an aluminum body for increased durability
  • Auxiliary side handle for increased tool control
  • Variable speed trigger locks automatically for increased user safety

This type of angle grinders makes use of air pressure supplied by air compressors to operate. They are usually more powerful than other types of angle grinders, but when you add in the cost of an air compressor, they could be costlier.

If you already have an air compressor in your store, then this type of angle grinder will be perfect for you.

Although this tool is available in a small size, it produces a lot of power, sometimes more than electric ones.

Similar to other types of grinders, it is also possible to attach an additional adjustable handle and a safety guard.

Pros

  • Extended run time
  • More powerful

Cons

  • Costly

Gas Powered angle grinders. Most Powerful Angle Grinder

This is also a type of cordless angle grinder in which gasoline is used to power their motor rather than electricity. They are usually the most powerful angle grinders available, having enough power to perform the most difficult tasks.

However, they are quite heavy and can be very expensive to maintain. You need to constantly refill for them to function ceaselessly.

Pros

  • Very Powerful

Cons

  • Quite heavy
  • Emission of gases that are not environmentally friendly

Different Types of Angle Grinders Discs

Each task carried out with angle grinders either polishing, cutting or grinding, have discs that are purposely assigned for them. Attempting to use say a cutting disc to grind or vice versa will only damage the disc.

types discs angle grinders

Stone cutting discs can actually be used to cut metal but it can tear up and damage the disc, it can also cause serious injury to yourself or people around you. That's why there are different types of discs for an angle grinder.

Reading the label on the discs with the materials you can use them on is easier to understand.

Let’s look at the angle grinder wheel types so you can know which one to use for any task you need to perform with an angle grinder.

Abrasive discs angle grinder. Diamond cutting discs

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DEWALT Grinding Wheel,...
408 Reviews
DEWALT Grinding Wheel,...
  • Extended performance diamond matrix provides 350x's the life of conventional abrasives and aggressive material removal
  • Large Grinding segments with heat treated steel bodies which provides increases durability and wheel life
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KSEIBI 644030 4-1/2-Inch...
54 Reviews
KSEIBI 644030 4-1/2-Inch...
  • Double Row Segmented Diamond Cup Wheels are designed for grinding concrete and field stone
  • Suitable for grinding machines and angle grinders
  • The double segment configuration allows for faster material removal.
  • Surface finishing on concrete, screed and natural stone Can also be used for removal of glues and epoxies
  • Brazed double row segments for fast and smooth grinding with 5mm segment height use wet or dry
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AUTOTOOLHOME 4.5' Diamond...
81 Reviews
AUTOTOOLHOME 4.5" Diamond...
  • 4-1/2" Premium Segmented Diamond Blade for FAST & RELIABLE Tile,Concrete, Cinder Block & Brick Cutting, compatible with All 4-1/2" Angle Grinders and marble cutters ,with 7/8" arbor
  • Stronger hot-pressed cutting segments combines aggressive cutting ability with a fine, clean cut and no burning of the segments. Elimination the possibility of single segment detachment.
  • Idea for Wet/Dry conditions Cutting in: Concrete, Masonry, Stone, Asphalt, Retractories and Granite
  • Steel core is made from high alloy, heat-treated steel. ensuring clean cuts as well as a disc operation that is characterized by smoothness and a low level of vibrations.
  • DESIGNED for Hard and Continuous use by professionals in construction, concrete fabrication, general maintenance, brick layers & general industrial applications, Each blade is engineered to work at 13,300 RPM and a maximum cutting depth of 1" to 1-1/4 inch

This grinder discs type can be used to cut through tiles, slates, marble asphalt, granite, and other abrasive materials. Their tips are made of diamond so they are hard enough to cut through the earlier mentioned hard materials.

You need to check if the disc is either dry or wet cut before purchasing a diamond cutting disc. Dry cut discs can be used without water while wet cut discs need to be kept wet when cutting.

Angle grinder discs for metal & stone cutting discs for angle grinder

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50 Pack - 4.5'x.040'x7/8'...
372 Reviews
50 Pack - 4.5"x.040"x7/8"...
  • QUANTITY: This listing is for a pack of fifty (50) pieces of our 4-1/2" cutting wheels.
  • DIMENSIONS: Each disc is four and a half (4.5) inches in diameter with a 7/8" metal center and .040" thickness. These are Type 1 (flat) discs.
  • USE: These cutoff wheels are designed for cutting fiberglass, steel, iron, plastic, stainless steel, and other ferrous metals.
  • INFO: Our cutting wheels are made with a proprietary blend of premium abrasive grains. These grains are self-sharpening and provide an aggressive cut.
  • SAFETY: Wear all applicable safety gear when using these discs (eyes/ears/face/hands/body/etc).
25 Pack 4-1/2' x 1/16' x...
40 Reviews
25 Pack 4-1/2" x 1/16" x...
  • 25 Pack Premium Metal Cutting Discs
  • 4-1/2" x 1/16" Cut Off Wheel with 7/8" Arbor
  • 1/16 Inch (.0625") Thickness for Long Life and Increased Durability
  • Compatible with 4.5" Angle Grinder
  • Capable of cutting fiberglass, plastic, iron, steel, stainless steel, and other ferrous metals
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Makita 10 Pack - 4.5' Cut...
126 Reviews
Makita 10 Pack - 4.5" Cut...
  • 10 MAKITA Premium 4-1/2" Type 1 Flat Cut Off Wheels for Metal & Stainless Steel (INOX) | Wheel Dimensions: 4-1/2-Inch x .045-Inch x 7/8-Inch | Optimized for Makita 4-1/2" Angle Grinders and compatible with All 4-1/2" Angle Grinders
  • CUT 2-3X MORE than lower quality or excessively thin wheels due to this wheel's Carefully selected Grain Grit, Hard Bond Matrix & Wheel Thickness that provide the best balanced Cut Life, Cut Rate, Cut Precision, Power Demands & Heat Buildup in the industry, allowing you to cut longer, consistently precise with unmatched wheel integrity, moderate power demands and relatively low heat buildup
  • QUICKLY & Effortlessly Cut through All Metal, Steel and Stainless Steel parts including rebar, steel pipe, structural & galvanized steel, sheet metal, structural tubing, black steel, cable and small to medium diameter solid pieces over an extra-long life span due to Makita's High-performance aluminum oxide grain and proprietary hard bond matrix
  • AVOID WHEEL SHATTER & Injury with lower priced wheels by relying on Makita's proprietary strong Synthetic Resinoid Bond matrix that binds Premium White Aluminum Oxide with Phenol Resin, allowing for optimal grain wear which yields accurate cutting PERFORMANCE, PRECISION, LONGEVITY, STABILITY & INTEGRITY, cutting Longer, Faster and Reliably than other wheels that may shatter or prematurely wear
  • DESIGNED for hard and continuous use on Stainless Steel, these Makita wheels are Quality Assured, Contaminant-Free, containing less than 0.1% Iron, Sulfur or Chlorine, for rust & corrosion-free results for your Stainless Steel material

They really do what they say on the tin. Stone cut off disc can be used for cutting stones or bricks while metal cut off discs can be used for cutting metal objects.

Grinding discs types

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WORKPRO 20-pack Flap...
50 Reviews
WORKPRO 20-pack Flap...
  • MEET ALL YOU NEED - This premium flap disc set includes 10 pieces of 40 grit, 5 pieces of 60 grit, 3 pieces of 80 grit and 2 pieces of 120 grit, which can be used for universal applications, ranging from metal or woodworking, concrete grinding or finishing, stone smoothing or finishing, to rust removal and more - perfectly offers all you need for your projects
  • EXTREME DURABILITY AND VALUE - Made of hard zirconia alumina material which lasts longer than standard aluminum oxide abrasive material, built for a more robust and economical grinding wheel
  • T29 FLAP DISCS WITH FIBERGLASS BACKING PLATE - T29 flap disc features angled flaps, which can be used for edge-working or contoured applications. These discs are also designed with a greater surface area than flat type for stock removal on horizontal surfaces. Fiberglass creates a strong bond with adhesives and does not contaminate the working surface. Fiberglass backing plate can effectively absorb vibration and bring more stable & efficient grinding
  • GREAT PERFORMANCE - Each 4.5" x 7/8-Inch arbor size flap disc is compatible with angle grinders operatable of up to 13,000 RPM. Our flap disc set make it ideal for high performance blending and stock removal on metals non-ferrous materials, fiberglass, plastics, woods and other uneven surfaces.
5 Pack 4-1/2' x 1/4' x...
19 Reviews
5 Pack 4-1/2" x 1/4" x...
  • 5 Pack Premium Metal Grinding Discs
  • 4-1/2" Inch Diameter x 1/4" Inch Thickness x 7/8" Inch Arbor
  • A24T Aluminum Oxide Grains for Aggressive Grinding and High Stock Removal
  • Compatible with 4.5" Angle Grinder
  • Fiberglass Reinforced for Saftey
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Makita 5 Pack - 4.5'...
69 Reviews
Makita 5 Pack - 4.5"...
  • 5 MAKITA Premium 4-1/2" Depressed Grinding Wheels for Metal | 4-1/2-Inch x 1/4-Inch x 7/8-Inch | Optimized for Makita 4-1/2" Angle Grinders and compatible with All 4-1/2" Angle Grinders with 5/8" arbor
  • GRIND 2-3X MORE than lower quality & cost wheels due to this wheel's carefully selected Grain Grit, Hard Bond Matrix & Wheel Thickness that provide balanced Grind Life, Stock Removal Rate, Precision, Power Demands & Heat Buildup, allowing you to grind longer, consistently precise with maximal wheel integrity, moderate power demands and relatively low heat buildup
  • EASILY & SMOOTHLY GRIND all steel and metal including welds, carbon steel, structural steel, iron, steel pipes and alloy steel over an extra-long life span due to Makita's High-performance Brown fused Aluminum Grain and hard bond matrix | Synthetic Resinoid Bond is ideal for fast stock removal, high operating speeds and aggressive grinding action used by professional metal fabrication, auto shops, maintenance repair, construction & general industrial applications
  • AVOID Premature Disintegration, Wheel Shatter, & Injury with lower priced wheels by relying on Makita's proprietary strong bond matrix that binds Premium White Aluminum Oxide with Phenol Resin allowing for optimal grain wear which yields smooth grinding PERFORMANCE, AGGRESSIVITY & BALANCE, grinding longer and faster than other wheels in its class
  • QUICKLY REMOVE General Steel, Metal & Weld Stock with Makita's Coarse 24 Grit Grains | Quality Assured, Aggressive and Long Life Wheels for consistent performance in the most demanding applications

They come in both stone grinding and metal grinding types. They can be used for grinding stone or metal to either shape it or remove lumps.

Wood sanding discs for angle grinder

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Black Hawk Zirconia Resin...
9 Reviews
Black Hawk Zirconia Resin...
  • Pack of 25 Discs
  • 7" Diameter with 7/8" Arbor hole
  • Performs great for blending welds
  • Ferrous and non-ferrous metals, as well as wood and fiberglass
  • Designed for use with an angle grinder, use only with backing pad and nut
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4.5 Inch Flap Discs by...
20 Reviews
4.5 Inch Flap Discs by...
  • 40/60/80/120 Grit assorted pack, each grit 5pcs, 4-1/2 Inch Diameter, 7/8 Inch Arbor, Type #27, 13300RPM maximum speed
  • Premium resin-bonded aluminum oxide abrasive produces high performance: durable, good abrasion resistance, anti-static and anti-clogging
  • Fiberglass backing providing durability and reinforcement
  • Assorted grit flap discs combo satisfying your polishing requirements from coarse to fine
  • Wide application: rust, paint, ferrous, stainless steel, and non-ferrous metals, wood and plastics; fits for most air and electric grinders, such as DEWALT DCG414B, DWE402, Makita 9557PBX1, Bosch 1375A, GWS8-45, PORTER-CABLE PC60TAG, PCE810, Black & Decker BDEG400, G950 and more
5pc 4.5' Flap Grinding...
37 Reviews
5pc 4.5" Flap Grinding...
  • Great for grinding, polishing, rust removing, etc. with 4.5" angle grinders
  • Application: stainless Steel, Aluminum, timber, plastic-ware, etc.
  • Flap wheel size: 4-1/2" X 7/8"
  • Max RMP: 11000
  • 1 each of grit: #40, #60, #80, #120, #180

These are basically just pieces of sandpaper that can be used to wear off and smoothen surfaces. They are easily replaced because they possess a method of attachment that can be fixed to a soft base to be attached to the angle grinder.

You can change the sandpaper once the current one is worn down and replaced with a new one.

Polishing Pads

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Stadea PPW184E Diamond...
4 Reviews
Stadea PPW184E Diamond...
  • Stadea Series Standard K - 4" Diamond polishing pads 5 step set with backing pad. Polishing pads are 3 MM thick and Hook and loop backing pad has US Standard 5/8-11 female thread
  • 5 Step Set saves fabrication time and the set includes one piece each for grits 50, 150, 500, 1500, 3000 & One Hook and Loop Backing Pad
  • For Wet and Dry Polishing, for best results recommended to use polishing pads with water
  • Works great on Granite Quartz Marble Concrete Stone Travertine Polishing
  • Optimal RPM 2200 Max RPM 4500
Atoplee 10pcs 3.78'' 96mm...
41 Reviews
Atoplee 10pcs 3.78'' 96mm...
  • Diameter :3.78'' (96mm)
  • Bore Diameter :16mm(for 100 angle grinder used)
  • Thickness:8mm
  • Material:White Wool(Buff)
  • Color: white and green
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11PCS 4.5 Inch Flap Discs...
14 Reviews
11PCS 4.5 Inch Flap Discs...
  • Versatile grinding discs pack includes flap discs of multiple grit, stripping disc, nylon polishing disc, felt polishing disc, satisfying your requirements from removal to fine polishing
  • Each disc is bonded with fiberglass backing to absorb tool vibration and offer additional durability and reinforcement
  • Easy strip disc removes rust, paint and coatings quickly and easily, without damaging the original surface; Nylon and Felt buffing discs are ideal for polishing and finishing all kinds of surface conditions; Flap discs are designed for high speed sanding and heavy duty removal, delivering fast and long lasting cut
  • Grinding & polishing discs set is widely used for cleaning, finishing & polishing on metal, stainless steel, glass, jewelry, plastic, ceramics, marble, wood crafts, and more
  • 4-1/2" Diameter with 7/8" Arbor, fits most 4.5 Inch Angle Grinder, such as DEWALT DCG414B, DWE402, Makita 9557PBX1, Bosch 1375A, GWS8-45, PORTER-CABLE PC60TAG, PCE810, Black & Decker BDEG400, G950 and more

They are majorly used for polishing and finishing harder surfaces. They are screwed on to the threaded portion of your angle grinder to be tightened with a spanner. Similar to the sandpaper, polishing heads can then be fixed to the pad.

Wire Brush and Twist Knot Cups

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DEWALT Wire Wheel for...
253 Reviews
DEWALT Wire Wheel for...
  • Highly specified wire grades are constructed with internal holding plate to ensure consistency and safety
  • Constructed for even balance which provides smooth performance
  • Wire is 100 percent inspected to meet demanding quality specifications
  • Designed with consistent level equilibrium
  • Excellence is assured with strict standards and a full assessment to ensure the standards are met
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DEWALT DW4907 8 Crimped...
75 Reviews
DEWALT DW4907 8 Crimped...
  • Heavy-duty bench grinder brush with wide face and coarse carbon steel wire
  • Highly specified wire grades constructed with internal holding plate
  • Provides ensured consistency and safety
  • Constructed for even balance, smooth performance
  • Wire is 100 percent inspected to meet demanding quality specifications
10Pcs 4''x5/8'' Premium...
24 Reviews
10Pcs 4''x5/8'' Premium...
  • Premium high density calcined aluminum is characterized by hard-wearing,long service life.
  • Designed for grinding, blending, sanding and finishing on a wide range of material. Especially suitable for stainless steel also great for mild steel.
  • Size:100mm x 16mm ,For use on an Angle Grinder
  • Premium abrasive cloth provides up to 15 X longer life than fiber resin metal sanding discs
  • Ideal for The Home, Workshop, Hobbyists, Tradesmen, Builders and DIY Enthusiasts, etc.

These attachments allow you to remove paint and rust off surfaces easily. They come in groups of wire brushes located around the perimeter of the cup. The cup can then be screwed onto the angle grinder but makes sure they are well tightened with the use of a spanner.

When the angle grinder is turned on, the metal brushes start to twist and spin at very high speeds making it easy to remove rust and paint easily.

Flap Sanding Discs

OUR PICKS

WORKPRO 20-pack Flap...
50 Reviews
WORKPRO 20-pack Flap...
  • MEET ALL YOU NEED - This premium flap disc set includes 10 pieces of 40 grit, 5 pieces of 60 grit, 3 pieces of 80 grit and 2 pieces of 120 grit, which can be used for universal applications, ranging from metal or woodworking, concrete grinding or finishing, stone smoothing or finishing, to rust removal and more - perfectly offers all you need for your projects
  • EXTREME DURABILITY AND VALUE - Made of hard zirconia alumina material which lasts longer than standard aluminum oxide abrasive material, built for a more robust and economical grinding wheel
  • T29 FLAP DISCS WITH FIBERGLASS BACKING PLATE - T29 flap disc features angled flaps, which can be used for edge-working or contoured applications. These discs are also designed with a greater surface area than flat type for stock removal on horizontal surfaces. Fiberglass creates a strong bond with adhesives and does not contaminate the working surface. Fiberglass backing plate can effectively absorb vibration and bring more stable & efficient grinding
  • GREAT PERFORMANCE - Each 4.5" x 7/8-Inch arbor size flap disc is compatible with angle grinders operatable of up to 13,000 RPM. Our flap disc set make it ideal for high performance blending and stock removal on metals non-ferrous materials, fiberglass, plastics, woods and other uneven surfaces.
4.5' x 7/8' Premium High...
456 Reviews
4.5" x 7/8" Premium High...
  • Benchmark Abrasives uses only the highest quality grains and backing material for our flap discs.
  • Designed for grinding, blending, sanding and finishing on a wide range of material.
  • The #1 choice for welders and metal fabricators.
  • Made in accordance with ANSI safety requirements.
  • For use on an Angle Grinder
12 Assorted GRIT 4 1/2'...
11 Reviews
12 Assorted GRIT 4 1/2"...
  • Will fit on all 4-1/2" angle grinders that have a 7/8" arbor
  • Maximum speed 13,300 rpm
  • INCLUDES: (2) Each 40, 60, 80, 100, 120,180 Grit
  • Good for non-ferrous metal, high speed steel, carbon and alloy steel paint and rust removal
  • Use for deburring, finishing work surface and light grinding

They are very versatile and can be a very useful disc to get for your angle grinder. They are majorly used for sanding and cleaning up surfaces but they can also do a little grinding. They are similar to the disc used for sanding with a benchtop disc sander.

They can prove to be the best solution if you need to do some fine because they are not as harsh as a proper grinding disc.

Hand grinders for metal. Safety Procedures

Angle grinders spin at dangerous speeds of about 10,000 rpm. Any slight mishap could lead to a very serious injury. That’s why you need to follow safety instructions and precautions in order to ensure your safety and those around you while operating the tool.

Always Use Personal Protective Equipment (PPE)

  • Everybody within your work area should wear safety glasses, hearing protection and gloves.  A flying particle might not cause much problem if hits your body but can cause injury if it hits your eye. This is why you should put on safety glasses when operating an angle grinder.
  • Gloves protect the hands from heat produced by the grinder. Burn is one of the most common injuries caused by a grinder because the operator might mistakenly touch the red-hot metal piece after the grinding is complete.
  • Angle grinders can be very loud during operation, hearing protection is also essential to prevent hearing loss.
  • Also, put on work pants when cutting hard materials such as metals. Flying streams of red-hot metals are produced when cutting, this might cause your pants to get burnt slightly. The sparks are not strong enough to burn your skin, but it doesn’t hurt to be prepared for the worst cases.

Safe Operation of your tool

Test new discs for at least one minute in a safe area and make sure they are not damaged before using them.

Orient the work so the wheel spins away from sharp edges. There is a tendency for wheels to catch on an edge causing the grinder to kick back.

  • Keep flying sparks away from flammable materials.
  • Remember to always unplug the tool when changing cutting discs
  • Store the tool out of children’s reach

How to choose an angle grinder

angle features to consider grinder

There are several factors to consider when choosing an angle grinder. Whether you are buying it for home jobs or commercial purpose, it is still pertinent that you find the best tool that will suit your needs.

Below are a few factors to consider:

Size of the angle grinder

A grinder’s size is usually determined by the wheels rather than the length of the tool. Big sized angle grinders come with large wheels making them suitable for professional grade jobs and other heavy-duty jobs.

Small sized angle grinders are more efficient in performing smaller tasks and tasks that require more precision such as sharpening and polishing metals. This is because their wheels spin at a faster rate.

Choose your angle grinder, either big or small, depending on the type of tasks you need it to perform.

Angle Grinder Motor Type

Angle grinders with high power motor are used majorly for heavy-duty construction site tasks. Motor power is usually determined by the voltage, wattage, and amp rating. These factors vary between the grinders.

The motor also determines the speed with which the disc rotates. Most handheld grinders produce about 5,000 to 10,000 revolutions per minute.

How to use an Angle grinder. Tips

  • Always try to use a safety guard that covers part of the grinding wheel.
  • Handle and store wheels properly. Storing them in areas that are not subjected to extreme temperature changes will go a long way in extending their lifespan.
  • Don’t force a wheel onto the tool or alter the size of the mounting hole if it doesn’t fit. Instead, get one that fits.
  • Don’t use a wheel on a material is not designed for. Doing this might damage the wheel or cause personal injury.
  • Always inspect your angle grinder and all discs for possible damage before mounting. Replace cracked or damaged discs.
  • Don’t exceed the safe operating speed specified by your tool’s manufacturer.

FAQs

Q: Can angle grinders cut wood?

A: Yes. However, it’s not advisable to use angle grinders to cut wood because it carries a lot of risk of injury to the tool operator.

Angle grinders spin at extremely high speeds. If the blade snags while making woodcuts, the kickback of the tool could be extremely dangerous. For a task like carving, sanding or cutting wood, we recommend using tools like Dremel for work with wood.

Q: Can an angle grinder be used as a sander?

A: Yes, all you need to do is attach flap discs and you’re good to go.

Q: what size angle grinder should I buy?

A: A 4.5-inch diameter angle grinder is suitable for most workshop tasks but if you need to make larger cuts you can get angle grinders with a diameter greater than 7 inches.

Q: what is angle grinder kickback?

A: An angle grinder kickback occurs when the rotating wheel snags on an object causing it to suddenly kickback. Take extra care when working on sharp edges and corners, and maintain a proper posture to reduce the effect of kick back in case it occurs.

Conclusion

An angle grinder is a tool you need to add to your tool chest because it allows you to cut anything any of your other tools can't. And it will also find regular use when you need to sharpen your metal edges or clean off debris, cement or rust from them.

A 4.5-inch angle grinder is great for all sorts of light construction tasks and home repair projects. but for larger cuts and bigger depths, you can get other sizes.

An angle grinder is also one of the most entertaining tools to operate. most DIYers will agree.

Select an angle grinder based on the above factors and also the type of jobs you need it. It should also be an angle grinder that fits into your budget. You can get a couple of good ones at low prices too.

Resources and Further Reading

Last update on 2019-10-17 / Affiliate links / Images from Amazon Product Advertising API

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