12 best core drill bits
Core drill bits are specialized cutting tools used in various construction and DIY applications, particularly for drilling large-diameter holes in masonry, concrete, stone, and other hard materials. They are commonly used in tasks such as installing plumbing, electrical conduits, and HVAC systems, as well as creating holes for anchor bolts and other fixtures.Here's what you need to know about core drill bits:
Design and Construction: Core drill bits are designed with a hollow cylindrical shape, allowing them to cut a clean, round hole by removing a core or plug of material from the workpiece. The core drill bit consists of a drill body with diamond or carbide cutting segments on the outer edge.
Materials: Core drill bits can be constructed with various materials, including high-quality diamond or carbide segments. Diamond-tipped core bits are known for their exceptional hardness and durability, making them suitable for drilling into hard materials like concrete and masonry.
Sizes and Diameters: Core drill bits are available in a range of sizes and diameters to accommodate different hole requirements. Common sizes include 1 inch (25 mm) to 14 inches (355 mm) or more, depending on the specific job.
Compatibility: To use core drill bits, you'll need a compatible core drilling machine or a power drill equipped with a core drilling adapter. These machines provide the necessary power and stability to drill large holes accurately.
Dry and Wet Drilling: Core drill bits can be used for both dry and wet drilling. Dry drilling generates more dust and may cause faster wear on the bit, while wet drilling uses water to cool and lubricate the bit, reducing dust and extending its lifespan.
Segment Types: The cutting segments on core drill bits can vary in design, including turbo segments, segmented rims, and continuous rims. Each type is suited to different materials and cutting conditions.
Depth of Cut: The depth of cut achievable with a core drill bit depends on the bit's length and the drilling equipment used. Some core bits are designed for shallow holes, while others can drill deeper into the material.
Safety: When using core drill bits, it's essential to wear appropriate personal protective equipment (PPE), such as safety glasses, hearing protection, and dust masks. Additionally, follow safety guidelines for handling power tools and drilling into hard materials.
Maintenance: To maintain the effectiveness and longevity of core drill bits, it's crucial to clean them regularly and ensure proper storage. Diamond-tipped bits, in particular, should be stored safely to prevent damage to the diamond segments.
Cost: The cost of core drill bits can vary widely depending on factors like size, quality, and the type of materials they are designed to cut. High-quality diamond-tipped core bits are generally more expensive but offer superior performance and durability.
Choosing the right core drill bit for your project involves considering the material you're drilling into, the required hole size, and the type of drilling equipment you have. High-quality core drill bits can significantly improve drilling efficiency and the quality of the holes you create in masonry and other hard materials.
Below you can find our editor's choice of the best core drill bits on the market
Bosch 2-5/8-Inch x 22-Inch SDS Max Rotary Hammer Core Bit HC8526
BOSCH
Product description
Bosch SDS-max carbide-tipped rotary hammer core bits offer an integral shank for better power transmission. Bosch SDS-max®rotary hammer core bits with wave design go beyond the range of standard bits and allow smaller rotary hammers to drill larger holes. Wave design transfers energy to bit more effectively for up to 40 percent faster drilling versus previous design.
From the Manufacturer
The Bosch HC8526 SDS-max core cutter measures 2-5/8-inches in diameter. The useable length is 17-inches and the overall length is 22-inches. The Robert Bosch Tool Corporation is one of the largest power tool and accessory manufacturers in the world. Bosch provides a complete line of corded and cordless power tools and accessories engineered to survive any jobsite and allow professionals to take control of their work.
- EFFICIENT: The Bosch SDS-max carbide-tipped rotary hammer core bit features an effective wave design to transfer energy for up to 40 percent speedier drilling versus other bit designs.
- POWER: With an integral shank, the HC8526 offers better power transmission and is designed to allow smaller hammers to drill larger holes.
- VERSATILE: This core bit is versatile in application with materials including concrete, brick, and block.
- DIMENSIONS: The Bosch HC8526 SDS-max core cutter measures 2-5/8-inches in diameter. The useable length is 17-inches and the overall length is 22-inches.
User questions & answers
| Question: | Will it fit a 1/2 shank drill |
| Answer: | Hi there! The HC8526 Drill Bit will only work with rotary hammers with SDS-Max Shanks. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST. |
| Question: | will it fit hilti te |
| Answer: | It must be a sds + hammer drill |
| Question: | Can this fit on a dewalt d25263k d-handle sds rotary hammer |
| Answer: | Thank you for your question and interest with our HC8526 2-5/8 In. x 22 In. SDS-max® Rotary Hammer Core Bit. This bit fits all SDS-max rotary hammers. It appears that your DeWalt D25263K accepts the SDS-Plus bits, so this HC8526 will not work. We offer the T3915SC (2-9/16") or T3916SC (2-11/16") SDS-Plus core bits with the T3927SC (17") extension. For further assistance you may visit our website: https://www.boschtools.com/us/en/ or you may contact us on 1-877-BOSCH99 (1-877-267-2499). |
| Question: | Does it come with shaft and pilot bit? Is it ready to use |
| Answer: | Thank you for your question. The HC8526 will come with a pilot bit and the shank. It is one complete piece. If you have further questions please feel free to contact our Bosch Customer Service Representatives at 1-877-BOSCH-99 (1-877-267-2499). |
Product features
Concrete to the Core
After more than 80 years of developing innovative tools and accessories for the concrete professional, Bosch is the acknowledged leader in the industry. With a robust line that can address everything from the toughest concrete drilling jobs to material removal, Bosch is a company whose legacy is written in concrete.
Concrete Innovation
Bosch offers a full line of professional-grade concrete drilling and cutting accessories designed to get the job done right.
All-In-One Design
Delivers clean accurate holes with efficient transfer of power.
Engineered for Performance
Bosch core bits feature asymmetrical carbide teeth and a wave design providing long life and fast performance.
Core Bit Accessories
Bosch core bits include a carbide tipped centering bit with a retaining ring and pin.
HC88 - Carbide Centering Bit
HCRR001 - Rubber Ring and Pin
Wet Drill Core Bits for Hard Concrete, Brick, and Block - 4" Diameter 1-1/4"-7 Threaded #30/40 Diamond Grits
EDiamondTools
Product description
#30/40 diamond grit, designed for drilling hard concrete, masonry, hard brick, and other hard materials - Diameter: 4 inches - Thread: 1-1/4"-7 threaded - Drilling depth: 14" - Drilling method: WET only
- #30/40 diamond grit, designed for drilling hard concrete, masonry, hard brick, and other hard materials
- Diameter: 4 inches
- Thread: 1-1/4"-7 threaded
- Drilling depth: 14"
- Drilling method: WET only
User questions & answers
| Question: | Is the 1.75" outside diameter? What diameter core does it recover |
| Answer: | Absolutely, brick and block is what this tool is made for. |
| Question: | Would it drill through rebar |
| Answer: | I didn’t receive one with mine but the seller was great and sent one right out . I’m sorry I don’t know if you can buy separately |
| Question: | Can I hook this up to a grinder witha 5/8" thread |
| Answer: | 3 in OD |
| Question: | Will this fit in a cordless drill |
| Answer: | We drilled through a 8 inch cinder block wall with this bit. We also needed a 4 inch vent pipe...in our case for a dryer. It was difficult to get a standard 4 inch vent through the hole we bored. To have it work we inserted a sleeve through the wall made from sheet metal that was probably a little smaller than 4 inches and attached a 4 inch vent pipe on the inside and an outdoor vent on the other. This solution was easy and worked out great. |
VORTEX DIAMOND VCB 3 Inch Wet Concrete Diamond Core Drill Bit for Concrete Stone Granite Marble (3")
Product description
Vortex Diamond provides standard grade high quality wet concrete diamond notched-edge segmented core drill bit with 14 inch tube length for concrete coring. It is designed for delivering the highest performance and long life at an affordable price. The notched segments provide more speed and less resistance in reinforced concrete. This core drill bit is optimized for a wide range of construction materials including concrete, masonry, paves, bricks and blocks. Fits on drills with 1-1/4 in.-7mm shank.
- Vortex Diamond standard grade notched-edge segmented core bits provide excellent performance in drilling cured concrete and asphalt.
- Segment height 0.395" (10 mm) ; Segment width. 0.145"
- 1-1/4"-7mm arbor; 14" tube length.
- Use wet only.
User questions & answers
| Question: | I’m looking for the pilot bit, i have a sds max 1 1/4” x 7mm arbor with a 14” x 4” core bit what pilot bit attachment do i need |
| Answer: | 25/32" (a little over 3/4") |
| Question: | Could you be more specific with an adapter for a 1/2" drill? Could you post a link to something that might work |
| Answer: | There are two answers to this question. It can fit on a drill with a small (1/4") chuck. The second answer is: I don't recommend it. The Dremel 85422 Silicon Carbide Grinding Stone is intended for use with the Dremel 4000 Variable Speed Rotary Tool. If you attach the grinding stone to even a very small drill you lose a great deal of the precision that the correct rotary tool gives. There is also a safety issue. If you can't control the drill properly you may shatter the stone. The Dremel 4000 costs $80.00. If you need to grind a small object safely, the extra $80.00 is worth it. |
| Question: | The threads are too far down in the drill to reach with a 1-1/4 7 adapter. What specific adapter works with this drill bit and a 1/2 inch drill |
| Answer: | It can just the same as a drill bit. |
| Question: | Can this be used in a 3/8" drill and does it require an arbor? Don't know what 1-1/4 in -7mm shank means |
| Answer: | Thank you for your question. The Dremel 85422 Grinding Stone is a 100 grit stone. For further assistance, please contact us at 1-800-4-DREMEL (1-800-437-3635), Monday - Friday, 8A - 5P CST. |
Diamond Drill Bits, Baban 10Pcs Hole Saw Diamond Drill Bit Hollow Core Drill Bit Set for Diamond Coating, Carbon Steel for Glass, Ceramics, Porcelain, Ceramic Tile, Marble, 6-32mm
Baban
- ✔ Satisfied Size - 6mm/0.23", 8mm/0.31", 10mm/0.39", 12mm/0.47", 14mm/0.55", 16mm/0.62", 18mm/0.7", 22mm/0.86", 26mm/1.02", 32mm/1.26"
- ✔ Ideal Application - This diamond coated core drill bit removes a complete circle from glass, marble, tiles,granite, ceramic or other.They are perfect for drill glass, tile bottles,blocks jars, fiberglass porcelain tile ceramic, slate Mable, granite light stone
- ✔ Super Material - These diamond drill bits made of high-speed steel that is durable and have a long sevice life,which are high quality and good performance that excellent for making clean and accurate hole.
- ✔ Sharp&Smooth Cut - Coated with high quality diamond, the diamond hole saw creates a high precision, smooth cut with no broken edges. Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably
- ✔ Note - When you using the diamond drill bits, please use lubrication (water),otherwise the diamond core drill will burn.Not for use on Concrete or for depths beyond about 1/2".
User questions & answers
| Question: | Drill though iron sink |
| Answer: | Hi，out wet tile saw included one piece of Diamond blade .The Arbor Size is 5/8'',outer size is 7''. |
| Question: | Can these be used on sterling silver sheet |
| Answer: | Hi，our tile cutter is used for cutting marble and tiles. |
| Question: | Can you use this to cut a hole in a glass wine bottle |
| Answer: | There is a bottle of clear included with the kit which is supposed to be used to seal the color. Mix the colors to get as close a color match as possible and then seal it. |
| Question: | Does this set come with a case |
| Answer: | I do not think it would work |
Product features
Super Material
These diamond drill bits made of high-speed steel that is durable and have a long sevice life,which are high quality and good performance that excellent for making clean and accurate hole.
Specifications
Size: 6mm/0.23", 8mm/0.31", 10mm/0.39", 12mm/0.47",
14mm/0.55", 16mm/0.62", 18mm/0.7", 22mm/0.86",
26mm/1.02", 32mm/1.26"
Note
When you using the diamond drill bits, please use lubrication (water),otherwise the diamond core drill will burn.Not for use on Concrete or for depths beyond about 1/2".
What Materials Can I Use Diamond Drill Bits On?
Diamond drill bits are perfect for drilling holes through hard materials such as these:
- Glass, sea glass, beach glass, fused glass
- Stone, gemstones, rock, pebbles
- Ceramic, porcelain, tiles, glazed pottery, plates
- Shell, antler, bone, fossil
- Very hard wood
Diamond Drill Bits - Why should I Choose?
- Small Diamond Drill Bits have a solid end and therefore a larger surface area so they last longer than the small diamond core drills, but may take longer to drill a hole. They are more robust and therefore ideal for very tough, dense pieces of sea glass, very hard stone, precious stone, gemstones, hard shell, bone and antler.
- If you're a regular user of diamond drill bits it is worth having a combination of both small diamond drill bits in your tool box as sometimes you don't know if you have a very tough material until you start drilling!
Operation Note
- As with all diamond drill bits you should use water as a lubricant and coolant.
- Being hollow, allows the water to flow up inside and around the inner core of these drill bits as you are drilling, helping to keep the drill bit cool and removing the debris.
- Start your hole diagonally, make a round trace and then hold drill straight.
Dry Core Bit for Brick and Concrete Block with Pilot Bit - 3" Diameter - SDS Plus Arbor - #30/40 Diamond
EDiamondTools
Product description
Designed for drilling masonry, concrete block and brick - Pilot Bit Included - Multiple sizes available - 3" Diameter - Thread: SDS Plus - Drilling depth: 9.5" - High diamond concentration and quality guarantee longer coring life
- #30/40 diamond grit for drilling soft brick, soft masonry, concrete block
- Diameter: 3 inch - Pilot Bit Included
- SDS Plus - Rotary Mode ONLY
- Drilling depth: 9.5"
- High diamond concentration and quality guarantee longer coring life, solid poured concrete not recommended
User questions & answers
| Question: | Is this good for brick and concrete block ? Putting a mini split |
| Answer: | Absolutely, brick and block is what this tool is made for. |
| Question: | Is the sds plus arbour available to purchase separately ? https://www.amazon.com/gp/product/b077r6tzny/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=utf8&th |
| Answer: | I didn’t receive one with mine but the seller was great and sent one right out . I’m sorry I don’t know if you can buy separately |
| Question: | Is this 3" id or od |
| Answer: | 3 in OD |
| Question: | I need to drill a hole through brick to accommodate a 4 inch vent pipe. Will the 4 inch bit do the job, or do I need something slightly larger |
| Answer: | We drilled through a 8 inch cinder block wall with this bit. We also needed a 4 inch vent pipe...in our case for a dryer. It was difficult to get a standard 4 inch vent through the hole we bored. To have it work we inserted a sleeve through the wall made from sheet metal that was probably a little smaller than 4 inches and attached a 4 inch vent pipe on the inside and an outdoor vent on the other. This solution was easy and worked out great. |
10Pcs Core Drill Bits Extension Set, SDS Plus Extension Shank Diamond Coated Core Hole Hammer Drills Bit TCT Tungsten Masonry Hole Cutters Set for Brick Concrete Cement
EBTOOLS
- [Long SDS Plus Shank] ---Core Drill Bits Extension Set Come with a SDS puls shank for this cement drill bits, male thread adapter design, match your drill chuck fastening and much more improve speedier drilling
- [Quality Assurance] ---This top quality TCT (tungsten carbide tipped) core drill set contains everything you need to get started.
- [Set Includes] --- Includes 35mm, 40mm, 50mm, 65mm, 82mm and 110mm core drill bits, SDS+ arbors, pilot drills and a 300mm SDS+ extension shank. Comes with 2 locking screws and 2 guide drills.
- [Extensive Use] --- 35mm-45mm drills are used to drilling water pipe and heater pipe, 55mm-80mm drills are used to air conditioner pipe, and 110mm used for 4inch wall fan.
- [Accurate Cutting] --- These are tungsten carbide tipped core drills that are great for cutting clean holes in concrete, brick and block work.
VORTEX DIAMOND WPDB 4-1/2 inch Dry Drill Core Bits with Diamond Aligned Segment for Brick Concrete Masonry 5/8"-11 Threaded (4-1/2")
VORTEX DIAMOND
Product description
Vortex Diamond provides premium grade laser welded dry drill core bits with high concentration diamond aligned segments. The product is designed for for dry drilling soft brick, soft masonry, concrete block using hand-held tools. Please note that solid poured concrete is not commended.
- Vortex Diamond provides premium grade laser welded dry drill core bits with high concentration diamond aligned segments.
- It is designed for for dry drilling soft brick, soft masonry, concrete block using hand-held tools. Solid poured concrete is not commended.
- Laser cut coolant slots in the barrel.
- Arbor 5/8"-11 threaded. Tube length 9".
- Diameter 4-1/2 inch.
Bosch 5-Inch x 17-Inch x 22-Inch SDS-Max Rotary Hammer Core Bit, HC8575
BOSCH
Product description
Bosch offers a full line of wood boring bits for heavy-duty and fine woodworking applications. Hinge Boring bits from Bosch meet European-type hinge specifications. These boring bits provide maximum accuracy and are wear-resistant to optimize work flow.
- EFFICIENT: The Bosch SDS-max carbide-tipped rotary hammer core bit features an effective wave design to transfer energy for up to 40 percent speedier drilling versus other bit designs
- POWER: With an integral shank, the HC8575 offers better power transmission and is designed to allow smaller hammers to drill larger holes
- VERSATILE: This core bit is versatile in application with materials including concrete, brick, and block
- DIMENSIONS: The Bosch HC8575 SDS-max core cutter measures 5-inches in diameter. The useable length is 17-inches and the overall length is 22-inches
User questions & answers
| Question: | Would this work for core drilling through a street curb for a french drain |
| Answer: | Yes, you can use HC8575 with SDS-max Rotary Hammer to drill through curb as it is designed for masonry and concrete. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST. |
| Question: | What size Bosch drill do you need for this bit? Thanks |
| Answer: | The main thing that you have to look for is that you are getting an SDS-Max rotary hammer. SDS-Plus or any other SDS variation won't work. It absolutely has to be SDS-Max. Personally, I use the Bosch 13.5 Amp 1-3/4" Corded Variable Speed SDS-Max Concrete/Masonry Rotary Hammer (Model # RH745). |
| Question: | What is the drilling depth |
| Answer: | Thank you for your question. The HC8575 SDS-max Rotary Hammer Bit has a useable length of 17" which makes the drilling depth of 17". For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST. |
| Question: | Is the 5 inch diameter exactly because i orderd 4 ichn one and it was only 3 and |
| Answer: | Thank you for your question. The HC8575 SDS-Max Rotary Hammer bit diameter is 5". For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST. |
Product features
Concrete to the Core
After more than 80 years of developing innovative tools and accessories for the concrete professional, Bosch is the acknowledged leader in the industry. With a robust line that can address everything from the toughest concrete drilling jobs to material removal, Bosch is a company whose legacy is written in concrete.
Concrete Innovation
Bosch offers a full line of professional-grade concrete drilling and cutting accessories designed to get the job done right.
All-In-One Design
Delivers clean accurate holes with efficient transfer of power.
Engineered for Performance
Bosch core bits feature asymmetrical carbide teeth and a wave design providing long life and fast performance.
Core Bit Accessories
Bosch core bits include a carbide tipped centering bit with a retaining ring and pin.
HC88 - Carbide Centering Bit
HCRR001 - Rubber Ring and Pin
1"-6" Core Bit Set- Diamond WET Coring Bit - Concrete Core Drill by BLUEROCK Tools
Product description
NEW - 1" - 6" BLUEROCK TOOLS DIAMOND WET CORING BIT FOR CORE DRILL - NEW Up for sale is a set of 1", 2", 3", 4", 5", and 6". WET coring bits for core drilling. Overall Length: 17" Approximate Inside Barrel Depth: 14.5" Approximate Thread Type: Industry Standard 1 1/4" (Directly fits our BLUEROCK Z-1 Core Drills) Note to buyers: Concrete coring bits are considered a consumable part. Bit life varies based on many factors including; material type, material density, depth of cut, hole diameter, drilling speed, wet/dry drilling and operator experience. As such, it is extremely difficult for BLUEROCK Tools to assess individual projects and speak to how long a bit will last before it needs to be replaced. We consider these core bits to be mid-grade in their performance but sold at a low-grade price point. Our customers tend to consider these bits to be a better value compared to high-grade bits that are a lot more expensive. We often hear that even though high-grade bits may last twice as long, they cost four times the price and they are happy buying our bits and getting the same amount of feet cut for half the price. Wet type concrete coring bits are NOT designed to cut all types of rock. They are primarily designed to cut concrete. Certain types of rock can be cut, but it will limit the bit life. The decision to use these bits on materials that they are not primarily designed for will be done at the risk of the user and not covered under our standard business policy.
- 1"-6" Core Bit Set
- BLUEROCKÊTools Brand
- Wet Type Core Bits
- For Concrete Coring
User questions & answers
| Question: | Does it cut metal |
| Answer: | I have drilled thousands of holes, 3" dia with a drill like this using a 6" angle grinder, cuts like butter even at a angle. I started out using sds impact drill and then regular 1/2" drill but the grinder is far far faster |
| Question: | Does this work for a Hilti core drill |
| Answer: | this one should work.....https://www.amazon.com/Core-Drill-Adapter-Male-Drilling/dp/B01F4IQS76/ref=sr_1_1?s=hi&ie=UTF8&qid=1544234703&sr=1-1&keywords=sds+max+adapter+for+core+bits there are several to chose from on amazon just search for SDS MAX adapter for core bit |
SHDIATOOL Diamond Core Drill Bits 1 Inch for Hard Stone Concrete Marble Granite Brick Laser Welded Dry or Wet Hole Saws 25mm
SHDIATOOL
- 1"(25mm) Laser Welded Diamond Dry Drilling Core Bits.
- Diameter: 25mm(1 inch), Total length: 100MM, Thread: 5/8"-11.
- Dry or Wet Drilling - use wet will greatly prolong the segment life
- Designed for drilling hard granite, marble, engineering stone, concrete, brick
- Easily operate on Angle Grinder; Need an adapter for drill or other machine, such as SDS,hex,Round plus shank
User questions & answers
| Question: | Is this bit intended to be used at a slow or fast drill speed |
| Answer: | Thanks for your asking. We recommend you use it at fast drill speed. If you want to work at slow drill speed, it is also okay. |
| Question: | Could you use this for drill through boulders |
| Answer: | yes but its only about 4" deep |
| Question: | Necesito una broca de marmol |
| Answer: | Thanks for your question. There are only 18mm and 20mm diamond core drill bits in this kind diamond hole saws. But we have 3/4" vacuum brazed diamond hole saw for drilling marble. It is not laser welded diamond core drill bit, it vacuum brazed diamond hole saw. But drilling marble is enough, you could purchase it. |
| Question: | can this go through metal |
| Answer: | No, This is definitely not for metal. The diamond core bits are used primarily for drilling faucet holes in granite and marble. Granite in MUCH harder than concrete. My core bits made specifically for the granite industry would punch a hole through 3cm granite in about 3 minutes. Harder granite like absolute black and tropic brown would take 5 minutes or so. I would also keep them wet to reduce the temperature. Occasionally, I would need to cut through the stainless sink when a customer wanted to use a sink I did not recommend for the cabinet size. It would go through the 18-16 gauge stainless sink in about 2 minutes but it would produce more heat that the bit could withstand, even submerged in water. It would heat up and expand, throwing the diamonds out of the teeth and leaving the bit useless until you sharpened it for 20 minutes in a concrete masonry unit. |
Product features
Application and Notice
- Drilling hard granite, marble, engineering stone, concrete, brick,masonry and all similar materials
- Ideal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers and vanities
- Dry or Wet Drilling - use wet will greatly prolong the segment life
Which Machine?
- With 5/8-Inch-11 Thread; Easily operate on Angle Grinder
- If you fit them on drill or other machine, you need an adapter, such as SDS, hex, Round plus shank...
Notice:
- Do not use this bit in hammer or Impact mode
- Do not give too much pressure or sway the core bits when working
- If find hard to drill, take a break and check the segments.
- If the segment become blunt, please try to sharp it by drilling a hole on the abrasive concrete and then continue to drill the hard material.
Step 1
- Fix it on angle grinder tightly and rightly.
- Turn on the angle grinder and let the core bits rotating in the air to check if there is balance problem
Step 2
- Hold the machine very steadily and give gentle pressure
- Start drilling as per following instructions
- 1) place the drill at a 30 degree angle, it will help to position
- 2) Drilling the material till the hole start to form
Step 3
- 3) Bring the drill up into upright position slowly then keep drilling vertically.
- Do not give too much pressure or sway the core bits when working
Bosch HC8517 2-1/4-Inch X 22-Inch Sds-Max Rotary Hammer Core Bit
BOSCH
Product description
Bosch SDS-max carbide-tipped rotary hammer core bits offer an integral shank for better power transmission. Maximum core size is 2-5/8-Inch deep. Bosch SDS-max rotary hammer core bits with wave design go beyond the range of standard bits and allow smaller hammers to drill larger holes.
- Core bits with wave design deliver larger, cleaner holes up to 6-Inch in diameter
- Carbide-tipped centering bit
- Asymmetrical carbide teeth for faster cutting, longer life
- All-in-one core transmits power directly to the end of the bit
- Wave design transfers energy to bit more effectively for up to 40-Percent faster drilling vs. previous design
User questions & answers
| Question: | Can I just order the bit |
| Answer: | Thank you for your question. HC88 is the part number for the centering bit for the HC8517 Core Bit. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST. |
| Question: | All this work on a. Hilti TE |
| Answer: | Thank you for your question. If the Hilti TE-72 accepts SDS-Max shank bits it will work. If you have further questions please feel free to contact our Bosch Customer Service Representatives at 1-877-BOSCH-99 (1-877-267-2499). |
| Question: | Does This fit a 1"sds drill |
| Answer: | Thank you for your question. The HC8517 will work with SDS-Max rotary hammers. It will not work with the smaller SDS-Plus size rotary hammers as the shank would be too large. If you have further questions please feel free to contact our Bosch Customer Service Representatives at 1-877-BOSCH-99 (1-877-267-2499). |
Product features
Concrete to the Core
After more than 80 years of developing innovative tools and accessories for the concrete professional, Bosch is the acknowledged leader in the industry. With a robust line that can address everything from the toughest concrete drilling jobs to material removal, Bosch is a company whose legacy is written in concrete.
Concrete Innovation
Bosch offers a full line of professional-grade concrete drilling and cutting accessories designed to get the job done right.
All-In-One Design
Delivers clean accurate holes with efficient transfer of power.
Engineered for Performance
Bosch core bits feature asymmetrical carbide teeth and a wave design providing long life and fast performance.
Core Bit Accessories
Bosch core bits include a carbide tipped centering bit with a retaining ring and pin.
HC88 - Carbide Centering Bit
HCRR001 - Rubber Ring and Pin
Dry Drill Core Bits for Brick, Concrete Block, Masonry - 2-1/2" Diameter 5/8"-11 Threaded #30/40 Diamond Grit
EDiamondTools
Product description
#30/40 diamond grit, premium quality, designed for drilling masonry, concrete block and soft brick - Diameter: 2-1/2 inches - Thread: 5/8"-11 threaded - Drilling depth: 9.5" - High diamond concentration and quality guarantee longer coring life
- #30/40 diamond grit for drilling soft brick, soft masonry, concrete block
- Diameter: 2-1/2 inches
- Thread: 5/8"-11 threaded
- Drilling depth: 9.5"
- High diamond concentration and quality guarantee longer coring life, solid poured concrete Not commended
User questions & answers
| Question: | What adapter and pilot combo would I need to use this bit with my Bosch hammer drill |
| Answer: | Yes, all core bits are measured by outside diameter. The inner is about 1/4" smaller, but that's not something we control for in manufacturing |
| Question: | Have dewalt spline hammer drill & a sds adapter for small bits & hd milwaukee right angle drill which to use for 8" concrete |
| Answer: | Yes it can. However, if you have a lot of rebar to go through, this series of core bits will perform better: https://www.amazon.com/dp/B078ZQTB23 |
| Question: | Need a 2 1/2 hole in street curb for drainage pipe, curb 6 - 6 1/2 inches thick, have Dewalt dwe4011 angle grinder w/ 5/8"-11 spindle, will this do it |
| Answer: | Hi, you technically Can hook this up to a grinder with a 5/8" thread, but the RPM of a grinder is typically too high to operate a wet core bit efficiently. The recommend rpm for 1.5" diameter wet bit is around 2000 |
| Question: | I have an sds max bulldog drill. What adapter do I need for this Bit |
| Answer: | I dont see why not, im sure the Hulk could hold it in place, the drill made for this weighs 75lbs plus. |
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