Bernardo core drill Vario HSS PLUS KBL, 14/18/22, drilling depth 55 mm is a professional cutting tool available from Krollit, an official Bernardo distributor since 2007.
- With Weldon shank 19 mm
- High-speed steel
- Hard-coated
- High wear protection
- Excellent chip removal
- Drilling depth 50 mm
Who uses the core drill Vario HSS PLUS KBL, 14/18/22, drilling depth 55 mm and for what
Mechanical workshops and tool laboratories use the core drill Vario HSS PLUS KBL, 14/18/22, drilling depth 55 mm for cutting, drilling or sharpening operations on materials compatible with the tool's geometry.
Its place in the Bernardo range
Bernardo core drill Vario HSS PLUS KBL, 14/18/22, drilling depth 55 mm is part of the Bernardo cutting tool range, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performance: to choose the right machine for your use case, you can consult the Bernardo catalog on Krollit or contact customer support for assistance in selection.
Krollit logistics and support
Shipping 3-5 working days from Krollit warehouse for spare parts and accessories. Customer support in Italian available for technical documentation and compatibility verification with the reference machine. Krollit has been an official distributor since 2007.
Who is the core drill Vario HSS PLUS KBL, 14/18/22, drilling depth 55 mm for
The core drill Vario HSS PLUS KBL, 14/18/22, drilling depth 55 mm is recommended for the following professional profiles:
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Mechanical workshops and tool laboratories: cutting and sharpening operations on compatible materials.
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Users with a compatible machine: replacement or original tool for the indicated machine.
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Out-of-spec materials: verify machinable material and tool geometry before use.
Frequently asked questions
What is a core drill used for?
It makes large diameter holes in sheet metal and metal, removing only the outer ring and leaving a central core.
Core drills are much more efficient than traditional drill bits on large diameters: they remove only the necessary material, reduce drill effort, and produce cleaner holes.
What steel is it made of?
In HSS (High Speed Steel), high-speed steel for most mild steels, aluminum, and standard ferrous materials.
HSS resists temperatures up to 600 °C without losing sharpness. For hardened materials or series production, consider HSS-Co or carbide-tipped versions.
Which machine is it mounted on?
It is mounted on magnetic drills (core drills) and milling machines with standard Weldon or TCT shank.
Magnetic drills are the most common choice for core drills, thanks to strong magnetic adhesion and controlled feed. Check the type of shank before purchasing.
What drilling depth does it reach?
Bernardo core drills are available with a depth of 30 mm (short version) or 55 mm (long version, KBL/CDL).
For thicknesses up to 30 mm, the short version is optimal (more rigid). For thicknesses 30-55 mm, the long version is needed. Thicker materials require custom drills.
How is it lubricated during processing?
Use cutting oil or cooling emulsion applied directly to the cutting point. Coolant reduces heat and extends useful life.
On hard steels or high thicknesses, lubrication is essential: without coolant, the drill overheats, loses sharpness, and can break prematurely. Recommended cutting speed: 20-30 m/min on mild steel.
