Alpha Core Bit Extenders
Alpha Core Bit Extenders are engineered to provide extended drilling reach, making it easy to drill through hollow concrete blocks from one side of the wall. Designed for use with both hammer drills and rotary hammers, these extenders feature a 5/8”-11 female thread and are available with either an SDS Plus or ½” Hex Shank. Offered in lengths of 6” or 10”, they ensure versatility and convenience for a wide range of applications. Each extender includes a pilot carbide drill bit that guides precise placement, preventing slipping on the surface and delivering accurate results every time.
Core Bit Extenders Main Features
- Convert Your Rotary/Hammer Drill With The SDS-Plus Fitting Into A Core Drill With A 5/8″-11 Thread
- Extend Reach In Hard To Access Areas
- Effortlessly Switch Between Accessories And Sizes
- Made With High Strength Steel
- Perfect For Thick Materials Such As Cutting Through Concrete, Brick, Pavers, Stone, And More
- Compatible With Diamond-Tipped Core Bits For Dry Coring To Extend The Reach
- *Must Be Used Without Percussion of Rotary Hammer/Hammer Drill
Alpha Core Bit Extenders Videos
Diamond Core Bit that Works with the Extender
Core Bit Extenders Specifications
| Part No. | Size | Type | Threads | For Use On | Container |
|---|---|---|---|---|---|
| CBESDSS | 6″ (150mm) | SDS Plus Shank Short | 5/8″-11 | Hammer Drill/Rotary Hammer | Shank Adapter, Pilot Bit and Screw |
| CBESDSL | 10″ (250mm) | SDS Plus Shank Long | 5/8″-11 | Hammer Drill/Rotary Hammer | Shank Adapter, Pilot Bit and Screw |
Alpha Core Bit Extenders Related Documents
| Document Type | Link |
|---|---|
| Flyer | New From Alpha 2024 |
| Flyer | Laser Core Bit & Core Bit Extender Flyer |
Additional Information
| PartNo | UPC Code | Pkg. Weight (lbs) | Package Dimensions | Commodity Code | Country Of Origin |
|---|---|---|---|---|---|
| CBESDSS | 749173462207 | 0.55 | 8.5in x 1in x 1in | 8207.90.6000 | China |
| CBESDSL | 749173462214 | 0.90 | 12in x 1in x 1in | 8207.90.6000 | China |
Frequently Asked Questions
Does Alpha® offer Core Bit Extender with Spline Shank?
No. Alpha® does not offer a Core Bit Extender with Spline Shank since the larger rotary hammer that takes Spline Shank has less revolution, and that would not be suitable for diamond application.
What is the maximum drilling depth?
Alpha® Laser Segmented Core Bit can be used up to 4” deep. When you approach the deep core drilling application, we recommend using water as cooling agent for better performance.
Can I core drill on Porcelain Paver Tile dry?
Yes. Alpha® recommends using a Laser Segmented Core Drill Bit on high-speed angle grinder. If you can supply water as cooling capacity, the performance of bit would become much better, and you can also eliminate dust from application. Since it is a very, hard dense material, we don’t recommend using this core bit on hammer drill or rotary hammer due to the rotation speed.
Why can’t I use Laser Segmented Core Drill Bit and Extender with percussion?
Since diamond grits are very sharp and hard, you can cut the surface of material effectively so that continual grinding motion and fast peripheral speed are essential for faster application. Conventional tungsten carbide core bit does not cut the surface well, so in that case, you need to add percussion to bite into the material then remove debris with rotary motion. If you use a diamond core bit with percussion, the cutting edge of the diamond grits, would be potentially destroyed by percussion.
Why do I need to use a Pilot Carbide Drill Bit first?
It is not easy to keep the core bit flat against the surface of material by hand-held application so that the user would approach in angle first until you get enough grip in the material. When you use on high-speed angle grinder, or with hammer drill or rotary hammer, there is a much slower rotation and with the length of the Extender, it is even more difficult to keep the cutting edge at the targeted area. A Pilot Carbide Drill Bit will stabilize the application so that you can establish the groove for segments quickly, and then you can remove a Pilot Drill Bit to let the diamond bit work faster in the groove.
I already have an extender for tungsten carbide core bit. Can I use it with Alpha® Laser Segmented Core Bit?
No. Since your extender for tungsten carbide core bit comes with different thread size, you cannot use that with Alpha® Laser Welded Core Bit.
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