Diamond blades have various uses, from cutting tiles and glass to cutting gems and semiconductor materials. If you’re planning to start a renovation or building project, you’ll need a diamond blade that suits your cutting needs.
The best diamond blade for an angle grinder is one that suits the intended application and fits your available tools. If you need a blade to cut metal, you must get one optimized for that purpose. Similarly, the blade’s diameter and bore size must fit the angle grinder. Otherwise, it will cut poorly and increase the risk of an accident.
A good diamond blade should be reliable, durable, and have a long life. Besides that, there are other factors to consider before acquiring a blade, such as a price and quality.
The ones we reviewed here are generally best suited for 4 1/2 inch diameter angle grinders. Read our reviews of 4 1/2 inch angle grinders if you want to purchase one.
Diamond Blade for Angle Grinder Reviews:
1. DEWALT 4-1/2-Inch Diamond Blade for Porcelain Tile
- Made of a blend of materials
- Modern design style
- Weighs 0.31 pounds
- Compatible with porcelain
Dewalt’s diamond blade for angle grinder has a high-performance diamond matrix that extends its lifespan. The enhanced diamond matrix also enhances the blade’s cutting performance. The blades’ rim has a continuous design that allows you to cut through porcelain without chipping.
The blades have the premium XP matrix that extends the lifespan. For instance, an XP4 cutting matrix blade will last four times more than a standard blade.
Some of Dewalt’s blades, like the XP2, are optimized for high-power grinders. They enable you to cut straight quickly and produce low amounts of heat during the process. Even low-power blades like XP3 have expansion holes that dissipate heat and prevent warping due to heat damage.
High performance, long cutting life, and heat dissipation abilities make this one of the finest diamond blade for angle grinder.
- Cuts are chip-free
- No warping or heat damage
- Optimized for high-power grinders
- Extended lifespan
- Diamond matrix provides precision and accuracy when cutting
- It’s expensive
- Not all of the blades have a long lifespan
2. EZARC 4-1/2 inch Super Thin Diamond Saw Blades for Angle Grinder
- Made with high-strength steel alloy
- X-Teeth design style
- Compatible materials include porcelain, granite, marble, and ceramic
- Thin pattern
The EZARC diamond blade for angle grinder is compatible with most 4 ½ inch grinders. Compatible grinders must also have a ⅞ inch arbor size and a 13,300 maximum RPM rating.
The super thin X-teeth rim produces clean cuts in materials of different abrasiveness and reduces chipping. The blade also experiences low side friction and cuts hard slate without breaking the edges.
EZARC’s design has holes that reduce heat damage and noise, making it a good stone cutting blade for angle grinder. The design integrates the flanges, which enhances safety and eliminates vibrations.
The use of high-strength alloy steel mixed evenly with diamond particles in the blades enables efficient removal of material. The blades also have long lifespans because of the 10 mm segment thickness.
An EZARC blade can cut through granite, ceramic, marble, and porcelain, making it a good diamond blade for tile cutting.
- Clean, smooth cuts with low friction and almost no chipping
- Long lifespan
- Can cut a wide range of materials
- Stable and safe with no vibrations when cutting
- Reduced noise and heat damage while cutting
- Produce high amounts of dust
- Cooling with water can be challenging
3. Makita 4.5” Segmented Rim Diamond Blades For 4.5”+ Grinders & Circular Saws
- Made with aluminum oxide
- Modern design style
- 0.08 inches thick
- Weighs 0.05 pounds
- The blade is designed to work at 13,800 RPM
Makita segmented rim diamond blades can be attached to all 4 ½ inch angle grinders with a ⅝ inch arbor. Makita designs its diamond blade for concrete, bricks, and cinder blocks.
Excellent optimization makes Makita a great diamond blade for concrete cutting, handling up to three times more than other blades. Hence, you can enjoy consistent cutting over long periods with moderate power consumption and low heat build-up.
Makita’s diamond blade for angle grinder has a bond matrix that enables it to perform reliably in wet or dry conditions. The bond matrix also has an optimal exposure-to-wear ratio, so the blades cut faster and last longer.
The advanced air-cooling that Makita blades use reduces warping and ensures the blades don’t wear out prematurely.
Continuously using a Makita diamond blade for tile cutting, concrete cutting, and other applications won’t strain it. This hardiness results from laser welding that gives the blade high integrity.
- Cuts up to three times more concrete than poor-quality blades
- Reliable in wet or dry conditions
- Doesn’t wear prematurely or warp easily
- Designed for strenuous tasks over long periods
- Longer lifespan than other blades in the same class
- High price
- Pushing on the blade reduces efficiency and lifespan
4. Tanzfrosch 4.5 inch Diamond Saw Blade for Tile Saw and Angle Grinder
- Compatible materials include porcelain and marble
- It has a quality guarantee
- 1.2mm thickness
The Tanzfrosch diamond blade for angle grinder is 1.2 mm thick and compatible with most handheld grinders with ⅞-inch arbors. The blade has an X-teeth design on its edges that cuts materials quickly and smoothly.
Despite being relatively thin at 1.2 mm, the Tanzfrosch blade is thick towards the center to reduce wobbling and vibration. The blade’s enhanced diamond matrix gives it a long lifespan and improves material removal.
The Tanzfrosch brick cutting blade for angle grinder can cut other materials like ceramic, granite, cement backer board, and marble. Since the blade can cut many materials, it is suitable for various applications, including tile installation.
You can use Tanzfrosch’s diamond blade for tile cutting in wet or dry conditions. The blade maker encourages you to lodge a complaint if the cutter fails to perform according to specifications. Hence, you can buy their knives confidently.
A Tanzfrosch diamond blade is also available for a 7-inch angle grinder which can handle more extensive tasks. It has the same features as the 4 ½ inch blade.
- Cuts quickly and smoothly
- The blade has reduced wobbling and low vibrations
- Works well in both wet and dry cutting conditions
- Can cut a wide variety of materials
- Quality Guarantee
- Only compatible with ⅞-inch arbors
5. GRAFF 4 1/2 inches Diamond Blade for Angle Grinder 3s Pack
- Made with diamond
- Compatible materials include porcelain, stone, ceramic, and marble
- Weighs 11.7 ounces
- Set of three different types of blades
- 13,300 RPM rating
GRAFF diamond blade for angle grinder sets contain blades designed for both dry and wet cutting. The blades can also sharpen themselves while cutting by shedding diamond grits.
The blades have diameters of 4 ½ inches and ⅞ inch arbors. They also come with a ⅝-inch arbor adapter.
A continuous rim GRAFF blade has high amounts of diamond segments, making it an excellent blade for cutting ceramic tile.
Segmented GRAFF blades have teeth lined with diamonds. The teeth make this a great diamond blade for cutting stone, marble, brick, ceramic, granite, and curb.
Turbo GRAFF blades are designed to cut several materials such as tiles, stones, granite, brick, ceramic, and curb.
- It comes with ⅝ inch arbor adapter
- Can do both wet and dry cutting
- The blades can sharpen themselves while in operation
- It comes in a pack of three different blades
- Can cut a wide variety of materials
- Short lifespan
- Average durability
6. GoYonder 4.5 Inch Thin Diamond Saw Blade for Cutting Porcelain Tiles
- Compatible materials include porcelain, marble, glass, stone, and ceramic
- X-teeth rim
You can use the GoYonder diamond blade for angle grinder for wet and dry cuts. The blade has an X-teeth design on its edges that cuts materials quickly and smoothly.
GoYonder diamond blades have a diameter of 4 ½ inches and either a ⅞ or ⅝ inch arbor. Hence, the blades are compatible with handheld angle grinders and other grinders. The thin rim provides chip-free cutting even with handheld grinders, making this a good diamond blade for glass tile cutting.
The GoYonder diamond blade for angle grinder is versatile, cutting a wide range of materials, including sandstone, quartz, and porcelain.
- Comes with both ⅞ and ⅝ inch arbor size
- Can cut several materials
- Allows chip-free cutting
- X-teeth allow cutting quickly and in a smooth way
- Can do both wet and dry cutting
- Can’t do hard work continuously
- Dry cutting gives it a short lifespan
7. Dewalt 4-1/2-Inch Diamond Blade With Continuous Rim
- Weighs 0.26 pounds
- 7.9*5.9*1/2 inches in size
This diamond blade for angle grinder has a ⅞-inch arbor and a 4 ½-inch blade diameter. The 4 ½ inch size makes the Dewalt blade compatible with most angle grinders.
A high-efficiency diamond matrix gives this concrete cutting blade for grinder a long lifespan and good material removal. It creates a thin kerf, reducing the dust released while cutting. The thin kerf also increases the speed of cutting.
Since this blade cuts quickly and maintains the same cutting depth, it is ideal for thin and soft masonry tasks. You can use it to resize blocks and siding masonry since it is a good diamond blade for cutting stone.
- Has a long life
- Comes with a ⅞-inch arbor that is compatible with many grinders
- Cuts at a fast rate
- Reduces the amount of dust released when cutting
- Cuts at a consistent depth
- Not compatible with handheld grinders
- Not suitable for continuous cutting
8. Casaverde 4.5 Inch Diamond Tile Blade for Cutting Porcelain Tiles
- Compatible with porcelain
- 4.13 x 4.13 x 0.06 inches
- 4.8 ounces
- It has an X-teeth rim
The thin diamond tile blade has X-teeth, enabling quick, smooth, and effortless cutting. Its thin mesh rim allows you to cut smoothly and precisely, making it a good diamond blade for glass tile. The blade’s thinness also means little to no chipping when you cut.
Though the blade’s edges are thin, the center is considerably thicker. This thickness stabilizes the blade, reduces wobbles, and eliminates vibrations. It allows wet and dry cutting, making it a good diamond blade for angle grinder.
Since the diamond tile blade has an enhanced diamond matrix, it has a long lifespan. The blade’s material removal capabilities are also good because of the matrix.
Since this diamond blade tile cutter is versatile, it can cut ceramic tiles, granite, porcelain tiles, and other masonry materials.
- Can do both wet and dry cutting
- Offers a chipping-free cutting experience
- Cuts smoothly and quickly because of its X-teeth
- Has little to no vibrations and wobbling
- Can cut many different materials
- Average durability
- Creates lots of dust
9. PEAKIT 4.5 Inch Diamond Blade Cutting Disc Wheel for Angle Grinder
- Made using composite materials
- Compatible with porcelain and ceramic
- Lifetime warranty
PEAKIT’s diamond blade has a sophisticated diamond matrix that gives it a long lifespan and improved material removal. Though its edges are super thin, the blade’s central area is thicker to prevent wobbling and eliminate vibrations.
The PEAKIT diamond blade for angle grinder has a turbo mesh rim that enables it to cut quickly, precisely, and smoothly. The thin edges also allow the blade to cut through materials without chipping. It has a ⅜-inch rim that you can use for wet and dry cutting.
This 4 1/2 diamond blade for tile can fit a ⅞ inch or ⅝ inch arbor. Hence it is compatible with most angle grinders.
Since it can cut through several tile materials, this diamond blade tile cutter suits home renovators and other construction professionals.
- Lifetime warranty covering cracking, defects, and warps
- Doesn’t wobble or vibrate
- Can do both wet cutting and dry cutting
- Can cut several tile materials
- Thin edges allow chip-free cutting
- Short lifespan
- Not as durable as others
Things to Consider Before Buying Diamond Blade for Angle Grinder
There are several factors to consider before buying to ensure you get the right diamond blade for angle grinder. They include;
Some blades can be utilized for wet cutting, others for dry cutting, and some can do both. So make sure you know for which application you’re buying the blade.
It’s crucial to ensure that the diamond blade you choose fits your angle grinder perfectly. The two essential size measurements to look out for before buying a blade are bore size and blade diameter.
The bore is the central hole on your blade, which attaches to the arbor. Its size should match your angle grinder’s arbor size. Blade diameter is measured from the edge of the blade to its center. Blade diameters have to fit. For instance, you can’t attach a 7in diamond blade to a 6-inch angle grinder.
Blade size also depends on how deep you need to cut. For instance, cutting a thin ceramic tile differs from cutting thick wood pieces. A wood cutting blade for angle grinder has to be able to cut deeper than a tile cutter.
Materials to Be Cut
Before choosing a diamond blade for your angle grinder, you must identify what materials you intend to cut. For instance, you can’t buy a wood cutting blade for angle grinder when planning to cut metal.
Generally, diamond blades are characterized into two; hard bonded and soft bonded blades based on the materials they can cut. A diamond blade for cutting stone and other hard materials that are not very abrasive uses soft bonding.
Hard-bonded blades, on the other hand, are used to cut materials like asphalt that are soft but highly abrasive.
Diamond blades and angle grinders have rotations per minute (RPM) ratings. When you choose a blade, ensure its RPM rating matches the grinder’s rating.
Using a blade whose RPM rating doesn’t match your grinder’s rating is risky and dramatically reduces the blade’s lifespan.
Expensive diamond blades cut better and last longer than cheaper blades. Bigger blades like the 7in diamond blade also cost more.
If you intend to use your diamond blade for small cutting jobs, a lower-priced blade will suffice.
A diamond blade’s quality is determined by the materials used and the process used to make it. High-quality blades last longer, don’t break easily and cut better than low-quality blades. Before buying a diamond blade, confirm its quality using the following tips;
- Find out what process was used to manufacture it
- Learn about the materials used to make the blade
- Read customer reviews to determine what previous buyers think about the blade’s quality
- If possible, learn about the manufacturer’s quality assurance process
Companies that have been in the market for a long time tend to have good-quality products. Buyers don’t like buying poor-quality diamond blades, so low-quality manufacturers don’t survive for long.
Amount of Diamonds
A diamond grinder blade with lots of diamonds requires a grinder with high horsepower. Hence, if your angle grinder has the low horsepower, you should get a diamond blade with fewer diamonds.
If you get a blade with more diamonds than your angle grinder’s horsepower can support, it won’t cut.
What Makes a Good Diamond Blade?
There are so many types of diamond blades available on the market. However, since most of the blades range from mediocre to good in terms of quality, you may wonder, what makes a diamond blade good?
1. Durability and Longevity
A good diamond blade is made of materials that extend its useful lifetime. The most common material that diamond blade makers use to increase durability is a high-efficiency diamond matrix.
Reliable diamond blades consistently produce precise cuts in all conditions. For instance, a diamond blade for tile cutting needs to be as precise as possible to prevent chipping.
3. Ability to Withstand Heat
Diamond blades are subject to a lot of heat when in use. For instance, a stone cutting blade for an angle grinder that handles heat poorly will warp and glaze over quickly.
Hence, a good diamond blade should manage lots of heat effectively, either by water or air cooling.
How to Put a Diamond Blade on an Angle Grinder?
Putting a diamond blade on an angle grinder is easy. Just use the following guide:
Step 1: Disconnect the Grinder from the Power Source
Disconnect the angle grinder from the power source before you attach the blade to ensure safety.
Step 2: Read the Instructions
Before attaching a diamond blade to an angle grinder, you must follow the instructions. The angle grinder comes with an instructions manual, while the diamond blade has a safety leaflet.
Ensure that you read both the leaflet and manual carefully.
Step 3: Check the Diamond Blade’s Compatibility
Check the diamond blade’s dimensions. Ensure the blade’s diameter fits within the angle grinder’s guard. Check the bore size and ensure it matches the spindle.
Read the RPM rating on the blade and compare it to the grinder’s rating. Make sure that the blade’s RPM rating is equal to or lower than the grinder’s rating.
Step 4: Put the Diamond Blade on the Spindle
First, place the back flange on the spindle keyway. After the back flange, put the diamond blade on the shaft. Ensure you place the blade in the direction of rotation marked on the grinder.
Avoid forcing it. With the blade in place, place the front flange and ensure it clamps the blade.
Step 5: Secure the Blade in Place
Locate the button that locks the spindle and press it. Tighten the front flange using a spanner to secure the diamond blade. Do not use excessive force.
After tightening the front flange, you’ll have successfully put a diamond blade on your angle grinder.
Is it Safe to Use a Diamond Blade With an Angle Grinder?
Yes, using a diamond blade with an angle grinder is safe, provided you follow safety guidelines. Here are some of the safety guidelines you should follow;
- Inspect the angle grinder before use to ensure all components are in good condition.
- Put on protective gear and clear any flammable materials from your workspace.
- Ensure the piece you’re cutting or grinding is firmly held in place.
- Be certain the grinder’s safety guard is positioned correctly to redirect any flying debris.
- Keep your fingers away from the rotating blade.
- After cutting, turn off the grinder before you clear waste from the work area.
1. Why is it Called a Diamond Blade?
Diamond blades are named so because their rims contain diamond particles. A thin metal coat usually carries the diamond particles on top of a metallic core.
Diamond is one of the hardest materials known, so adding it to the blade enhances its ability to cut.
2. Can You Cut Metal With a Diamond Blade?
Yes, you can use a diamond blade to cut metal. However, not all types can cut metal, so you need the right angle grinder diamond blade for metal.
Hence, you should find out a blade’s application before using it to cut metal. A universal blade will work in most cases since it can cut a wide range of materials.
3. How Long Do Diamond Cutting Discs Last?
The lifespan of a cutting disc depends on the material being cut and the quality of the disc. For example, a blade used for cutting wood lasts longer than an angle grinder diamond blade for metal cutting.
On average, a high-quality blade lasts about 120 hours, while a low-quality one lasts 10 hours.
4. How Do I Know if My Diamond Blade is Dull?
If you notice the following signs, then your diamond blade is probably dull;
- The blade appears smooth – Smoothness indicates that the diamonds are worn out, dulling the edge.
- Glazed appearance – When the rim’s metal melts and covers the diamonds, the blade becomes dull and looks glazed over.
- A dull blade will be slower than usual.
5. Can You Sharpen Diamond Blades?
Yes, sharpening diamond blades is possible. You can use a sharpening stone, a silicon carbide grinding tool, fire bricks, or even a cinder block to sharpen blades.
The more abrasive a sharpening material is, the easier it will be to sharpen your blade.
6. What is a Sintered Diamond Blade?
A sintered diamond blade is made when diamond particles are embedded in the metal on its edge.
Sintering uses pressure and heat to fuse the diamond and metallic particles into one solid mass. Sintered diamond blades tend to be cheaper than laser-welded blades because sintering is an inexpensive process.
Choosing a good diamond blade for your angle grinder is essential if you want a great cutting experience. Most of the diamond blades in the market are low-quality, so they are inefficient and messy to use. This review of the top 10 diamond blades narrows the list, making it easy to find your ideal blade.
Our review shows that the best diamond blade for angle grinder is DEWALT DW4765 Diamond Blade*.
The blade has a long lifespan and provides a precise, chip-free cutting experience every time it’s used. The rim is unlikely to have heat damage even after cutting continuously for hours, thanks to superior heat management.
*Paid Link: As an Amazon Associate, I earn from qualifying purchases. Should you decide to purchase a tool through this link, I will get a small commission. The price of the tool won’t be any different to you.
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