Best Diamond Core Drill Bit for Granite and Concrete: Reviews & Guide

Your core drill is useless if the drill bit is broken. So, how is your core drill bit? Is it broken? Then you are definitely looking for the best core drill bit for your next purchase!

Well, finding the best core drill bit is not an easy job. You need to spend hours on research and experts’ advice to come up with one possible decision. But, don’t panic. Because we are right here for you.

To rescue you from time-consuming research and help you make the right decision, we are here to suggest some core drill bits that are top rated and highly recommended by the users.

What is a diamond core drill bit?

A diamond core drill bit is a specialized tool used for drilling holes through hard materials such as concrete, brick, or stone.

It typically consists of a circular blade with a diamond-coated edge that is mounted on a shaft or mandrel for attachment to a drill or drill press.

Why is it called a diamond drill bit?

A drill bit is called a diamond drill bit because it has a diamond-coated cutting edge. The diamond coating helps to extend the life of the bit and improve its cutting performance, allowing it to quickly and efficiently drill through hard materials such as concrete, brick, and stone.

The diamond coating is typically applied to the edge of the bit using a process called electroplating, in which a layer of diamond particles is bonded to the surface of the bit using an electric current.

The resulting diamond coating is extremely hard and durable, making it ideal for use in drilling through tough, abrasive materials.

Watch the Video: Diamond Core Bits vs. Carbide Core Bits

Top Rated Diamond Core Drill Bit: Top Pick in 2023

On our research time, we got these core drill bits in high rank and most popular position.

Different brands of core drill bit available out there. But, all these aren’t of the same quality. So that, from our experience and days of research, we have brought you some heavy-duty core drill bits.

Here you will get a core drill bit comparison table and can compare some top-rated core drill bit of 2023. So, why late? Let’s see the comparison table right now!

Image

Name

Rating

Size

Price

Concord Diamond Core Drill Bit

Concord Diamond Core Drill Bit

4.5/5

1 Inch

Bosch Rotary Hammer Core Bit

Bosch Rotary Hammer Core Bit

4.5/5

4 In. x 12 Inch

EDiamondTools Dry Drill Core Bits

EDiamondTools Dry Drill Core Bits

4.5/5

9.5 Inch

Steel Dragon Tools Dry Diamond Core Drill Bit

Steel Dragon Tools Dry Diamond Core Drill Bit

3.5/5

1.5-inch to 2.5-inch

Stop Now Diamond Drill Bits

Stop Now Diamond Drill Bits

4/5

Multiple

Read: Best Metal Drill Bits 

Best Diamond Core Drill Bit for Granite and Concrete 2023: Review & Guide

Now, we are here to suggest you some top-rated core drill bits you expect. Finding the high quality and durable core drill bit wasn’t easy.

We had to do in-depth research and analysis to pick the best ones to recommend you according to your need.

Here, you are going to find some diamond core drill bit to use on concrete, masonry and other various types of materials. Let’s get started with the first one!

1. Concord Blades CBW02500SP

Concord Blades CBW02500SP Wet Concrete Diamond Core Drill Bit
Use Wet Only
14" Tube Length
3.3mm Segment

There is no doubt that you are searching for the right diamond core bit. Here it is! The brand Concord blades have been selling this diamond core drill bit since 2014.

It’s still considered as the top-rated one for the last four years. So, you can easily understand its quality, performance and the level of user’s satisfaction over their products.

This specialty of the core drill bit is, it’s perfect for wet drilling and metal drilling. Besides, you can use the drill bit on any suitable drill and drill on cured concrete or heavy metal materials. Since the size of the bit is about 14 inches long, it’s recommended not to use it free hand.

Actually, these size drill bits are mainly used by the professionals. So, if you are looking for a fast cutting diamond drill bit for construction projects, it might be the ideal choice for you.

Pros
  • It’s durable
  • Used for wet drill only
  • Capable of fast cutting the materials
  • It comes with 14” tube that is great for professional use
  • You can use it for hard materials like steel and cured concrete
Cons
  • Dull quickly

2. Bosch HC8550

Bosch HC8550 4 In. x 12 In. SDS-max Rotary Hammer Core Bit
Longer Life
Faster Drilling 
Fast Dust Remove

Bosch is the name of the trust! They are a well reputed and renowned brand for producing high-quality tools and equipment. Also, in the case of the core drill bit, this brand is in the top rank.

Here we are recommending you one of the most popular diamond core drill bit by Bosch. It can also be used for multi types of materials. They have launched the drill bit in 2013 and since then it has gained popularity and satisfaction among the users.

So, the key identifying feature that ensures the great effectiveness of the drill bit is the wave design. Due to this specific design, the bit drills fast into concrete and another type of materials. Hence, if you are looking for a drill for any hard type materials, you can think about the Bosch HC8550.

Along with the performance, you might be wondering about durability. Well, for this drill bit, the tip of the bit is coated with carbide. Carbide coated drill bits are long-lasting.

So, you can expect it to give a durable performance and drill fast even after many years. Also, this drill bit is effective to use on different types of projects. Therefore, you can use the core drill bit to perform beyond the standardized range.

Pros
  • It drills fast
  • It’s durable
  • Comes with wave design
  • The drill bit top is carbide coated
Cons
  • High price

3. EDiamondTools Dry Drill Core Bits

EDiamondTools Dry Drill Core Bits
Premium Quality
Longer Coring Life
Designed for Drilling Masonry

The third diamond drill bit set belongs to the EDiamond Tools. If you are looking for a heavy-duty core drill bit at an affordable price, here is the one for you. For the past three years, the brand has been consistently selling this drill bit set ensuring clients requirements are met.

Finding a multi-purpose drill bit set is easy, but purchasing the right one everyone desires. Therefore, to meet the desire matching with the requirements, the Ediamonds could successfully ensure a perfect blend of both in their dry drill core bits.

So, you don’t need to worry about its performance. It’s a great bit set that you can use on soft brick, masonry, and concrete.

So, this drill bit set can be easily used on hard materials. If you are looking for one drill bit set that you can use on diverse materials, then, diamond tools Dry Drill Core Bits can be your ideal decision.

4. Steel Dragon Tools Core Drill Bit

Steel Dragon Tools 3-Piece 1.5″ to 2.5″ Dry Diamond Core Drill Bit
Sturdy Construction
Diamond Core Drill Bit
Comes with Carrying Case

The Steel Dragon produces the perfect diamond core drill bit set that contains three piece tools from 1.5″ to 2.5″ drill bit. It has been 8 years since the Steel Dragon has launched the drill bit.

People are a bit skeptical about Chinese products. However, the Steel Dragon has successfully proved them wrong with their best-selling and overly satisfactory 3 pieces diamond core drill bit set.

From our in-depth research, we have found that this drill bit works wonderfully on block, brick, concrete and other hard materials. You can easily make the required size holes in any of the materials.

Also, the core drill bit comes with a strong case. And, the case makes it a portable set of device that you can easily carry anywhere for your projects.

I would like to mention another point that it’s one of the best quality drill bit set that you can purchase at an affordable price. So, you don’t need to worry about the quality when you are planning for buying a core drill bit set within budget!

Pros
  • Highly durable
  • It can drill up to 6 in.
  • The set comes with a portable and durable carrying case
  • The bit set includes a tapered pilot drill bit, SDS and Hex adapters
Cons
  • High price

5. Stop Now 12 Pcs Diamond Drill Bits

Stop Now 12 Pcs Diamond Drill Bits
Faster Drill Speed
Multi Purpose Use
Diamond Coated Drill Bit

When I was searching for the right diamond drill bit set for you, luckily I could pick two. After the Steel Dragon’s 3-piece drill bit set, here is another one by Stop Now.

It’s a more extended version compared to the Steel Dragon that comes with 12 pcs of Diamond drill bits set. Clearly, since there is a wide range of bits available, you can easily use them for multiple types of projects.

As per the name of the drill bit, you may already understand that it can effectively create holes on strong materials like glass, ceramic, porcelain and so on. So, it’s a great tool that you can repair and install different items by yourself when you are at home.

One thing you should keep in mind that when you are making a small hole, you can speed up the drill. But, when you are making a larger hole, you should slow down the speed. Also, remember to keep the required material lubricated before you are making a hole.

Whenever you are working on your DIY project or fixing something at home, you just need to wet the required place and then drill. In this way, you can operate the device for quite a long time.

Pros
  • The drill bit can be used on any standard electric drill
  • To ensure durability, use water for lubrication on the material
  • The diamond drill bit set includes 12pcs of 4-50mm drill bit set
  • It can easily create a hole in glass, tiles, marble, granite, ceramic or other materials
Cons
  • Need size improvement

Things to consider before buying core drill bit?

When buying a core drill bit, there are several factors to consider to ensure that you choose the best one for your specific needs and applications.

Some important things to consider include the type and thickness of the material you will be drilling through, the size and depth of the hole you need to create, the type of drill or drill press you will be using, and the type of attachment or adapter required to connect the bit to the drill.

Additionally, it is crucial to consider the quality and reputation of the manufacturer, as well as the availability of replacement parts and technical support if needed.

Consult the manufacturer’s recommendations and compare different options to find the best core drill bit for your project.

The advantages of using a diamond core drill bit

There are several advantages to using a diamond core drill bit for drilling through hard materials such as concrete, brick, and stone. Some of the main advantages of using a diamond core drill bit include:

Improved durability and longevity: The diamond coating on the edge of the bit helps to extend its life and maintain its cutting performance over time. This makes it less likely to wear out or break under heavy use, and allows it to drill through more holes before needing to be replaced.

Faster and more efficient cutting: The diamond coating on the bit helps to improve its cutting speed and efficiency, allowing it to drill through hard materials more quickly and with less effort. This can save time and labor, and reduce the overall cost of the drilling project.

Better accuracy and precision: The sharp, diamond-coated edge of the bit allows for more precise and accurate drilling, helping to create clean, smooth holes with minimal chipping or breakage.

This is particularly useful when drilling through materials that are prone to cracking or crumbling, such as soft brick or concrete.

Versatility and adaptability: Diamond core drill bits are available in a wide range of sizes and styles, making them suitable for a variety of drilling applications and materials.

They can also be easily adapted to different types of drills and drill presses, allowing them to be used in a range of different settings and scenarios.

Cost-effectiveness: Despite their high initial cost, diamond core drill bits can provide excellent value for money over the long term.

Because of their improved durability and efficiency, they can save time and labor, and reduce the overall cost of the drilling project. This makes them a cost-effective choice for professionals and DIYers alike.

Watch the Video: How to use a diamond core drill

What is a diamond core bit used for?

A diamond core bit is a specialized tool used for drilling holes through hard materials such as concrete, brick, or stone. It typically consists of a circular blade with a diamond-coated edge that is mounted on a shaft or mandrel for attachment to a drill or drill press.

Diamond core bits are commonly used in construction, mining, and other industries that require the ability to quickly and efficiently drill through tough, abrasive materials.

They are also popular among DIYers and homeowners for tasks such as installing plumbing or electrical fixtures, or creating openings for doors or windows in concrete or masonry walls.

How do I properly use a diamond core drill bit?

To properly use a diamond core drill bit, first attach it to the drill or drill press according to the manufacturer’s instructions. Make sure the bit is securely fastened and properly aligned with the material you will be drilling through.

Use a slow, steady speed and apply gentle pressure to the bit as it cuts through the material. Avoid applying too much force or using excessive speed, as this can cause the bit to break or become damaged.

How do I maintain and care for my diamond core drill bit?

To maintain and care for your diamond core drill bit, clean it after each use to remove any debris or dust that may have accumulated on the cutting edge. Store the bit in a dry, protected location out of the reach of children or pets.

Avoid dropping or damaging the bit, and do not expose it to extreme temperatures or moisture. Consult the manufacturer’s recommendations for specific instructions on how to care for and extend the life of your diamond core drill bit.

How Long Does a Diamond Core Bit Last?

The lifespan of a diamond core bit can vary depending on several factors, including the quality of the diamond coating, the type and thickness of the material being drilled, and the amount of use and wear the bit experiences.

In general, a high-quality diamond core bit can last for hundreds of holes or more when used properly and cared for according to the manufacturer’s recommendations. However, it is important to regularly inspect the bit for wear and replace it if necessary to ensure optimal performance and safety.

Which Company Drill Bit is Best?

It is difficult to say which company produces the best drill bits, as different companies may specialize in different types of drill bits and offer different levels of quality and performance.

Some well-known and highly regarded companies that produce drill bits include Bosch, DeWalt, Milwaukee, and Irwin. It is best to research and compare the options available from different companies to determine which one offers the best drill bits for your specific needs and applications.

Will a diamond core drill go through steel?

A diamond core drill is designed to cut through hard materials such as concrete, brick, and stone, but it may not be effective for drilling through steel. Steel is a much harder and tougher material than concrete or brick, and it requires a different type of drill bit with a more specialized cutting edge.

A standard diamond core drill may not be able to penetrate the surface of steel, or it may quickly become damaged or worn out if used in this way. It is best to use a carbide-tipped or cobalt drill bit specifically designed for drilling through steel.

Will a diamond bit drill through concrete?

Yes, a diamond bit can be used to drill through concrete. Concrete is a hard, abrasive material that can be difficult to drill through using traditional drill bits.

However, the diamond coating on a diamond bit helps to extend its life and improve its cutting performance, allowing it to quickly and efficiently drill through concrete and other hard materials.

To drill through concrete using a diamond bit, attach the bit to a drill or drill press, mark the location of the hole, and apply gentle pressure to the drill to start the cutting process.

Use a slow, steady speed and apply gentle pressure to the bit as it cuts through the material. Avoid applying too much force or using excessive speed, as this can cause the bit to break or become damaged.

How deep can a diamond core drill go?

The depth to which a diamond core drill can go depends on several factors, including the size and design of the bit, the type and thickness of the material being drilled, and the power and speed of the drill or drill press.

In general, a standard diamond core drill bit can drill through several inches of concrete or brick, but may not be effective for drilling through thicker or harder materials.

For deeper drilling, larger or more specialized diamond core bits may be required. It is best to consult the manufacturer’s recommendations or a professional for guidance on the maximum depth and capabilities of a particular diamond core drill bit.

Final Verdict

At the end! These are our picked core drill bits. We hope you have been able to pick the one you have been searching for. You can pick any one of the products mentioned above and get high performance without any worries.

Apart from the products, you can trust our reviews because they are based on advanced research and neutral perspective. If you have any further comment or queries, you can leave them in the comment section. Thanks for taking your time reading the article.

We wish you get the best core drill bit and accomplishment in your projects! 🙂

William Howell

ABOUT THE AUTHOR

William Howell (DIY Expert)

My professional wood working began at a very young age of thirteen, with eighteen years in furniture manufacturing, followed by seven years as a general contractor of finer homes.

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