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Diamond core bit for core drilling: which one to choose?
Of all the tools on the market, a diamond core bit for a core drill allows you to drill through various materials quickly and with an excellent cutting finish. Today, we'll explore the details needed to choose the right diamond core bit for a core drill.
Diamond crown: hole diameter and depth.
When choosing which diamond core bit to use for cutting a building material, you need to keep in mind the size of the hole you need to make.
Diameter of the hole to be drilled:
- The hole size when using a diamond core drill bit for a core drill generally ranges from Ø24mm to Ø600mm. Smaller diameters are available, down to 4mm, but these are usually diamond core bits for stoneware and ceramic that can be mounted on drills or grinders.
- Depending on the diameter of the hole you need to drill, you'll choose an equivalent diamond core bit. If, however, you need a specific diameter for the internal core for laboratory analysis, it's essential to know the internal diameter of the tool.
Nord srl produces diamond crowns from 4mm up to 1600mm in diameter, for various applications.
Thickness of the material to be drilled:
The thickness of the material being drilled is the key factor in choosing the body height of your diamond core bit. Diamond core bits range from 170mm to 1000mm in cutting depth. Read the section "Dry or wet diamond core bit?" to see the various available heights.
Diamond core bit for Hilti, Makita, and Wurth core drills
Another key aspect when choosing your next diamond core bit for core drilling is the type of machine you'll be using. Standard diamond core bits typically have an M16 or UNC 1 1/4" connection. That said, you can purchase adapters separately to use professional diamond core bits on Hilti, Wurth machines, or handheld drills.
Diamond drill bit: how to do it?
If you want to use your diamond core bit with a conventional drill, you can use SDS Plus or SDS Max adapters. However, I strongly recommend that you avoid overdoing the hole size and cutting depth. If you need to drill holes larger than 80mm in diameter or deeper than 150mm, use a professional core drill.
A quick tip: if you use your drill to drill holes with diamond core bits, be sure to turn off the hammer function . Diamond cuts by abrasion and would be significantly affected by the impact on the material being cut. The result: your diamond core bit will lose its cutting edge, or worse, the teeth will come loose.
Dry or wet diamond core bit?
It's very difficult to analyze this topic in just a few lines, so let's get straight to the point. Wet diamond core bits (using water) are definitely more efficient than dry ones.
Water acts as a coolant and lubricator, ensuring significantly superior cutting performance from your diamond core drill bit. Dry diamond core bits are typically used when the use of water could potentially cause damage to the structure being drilled.
Nord produces various diamond core bit solutions for core drilling machines:
FORK: Wet diamond crowns, UNC 11/4″ attachment – Ø24mm up to Ø600mm – Body height from 450 to 1000 mm.
FORLD300: Dry diamond core bits, UNC 1 1/4″ connection – Ø32mm up to Ø200mm – Body height 330mm
FORLD : Dry diamond crown, M16 connection – Ø32mm up to Ø200mm – Body height 170mm
Used diamond crown: what to do?
Finally, I'll let you in on a secret about used diamond crowns: They can often be refilled.
Nord SRL offers a truly important service: if you have a used and finished diamond crown, it is possible to regenerate it with new diamond segments.
This service can save you up to 20%.
If you need further information, please feel free to contact us at sales@lanordsrl.it or via the WhatsApp chat on this website.
