Bernardo annular cutter Vario HSS PLUS KBK, 14/18/22, drilling depth 30 mm is a cutting tool for professional use available on Krollit, an official Bernardo distributor since 2007.
- With Weldon 19 mm shank
- High-speed steel
- Hard-coated
- High wear protection
- Excellent chip removal
- Drilling depth 30 mm
Who uses the annular cutter Vario HSS PLUS KBK, 14/18/22, drilling depth 30 mm and for what
Mechanical workshops and tool laboratories use the annular cutter Vario HSS PLUS KBK, 14/18/22, drilling depth 30 mm for cutting, drilling, or sharpening operations on materials compatible with the tool's geometry.
Its place in the Bernardo range
Bernardo annular cutter Vario HSS PLUS KBK, 14/18/22, drilling depth 30 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 levels: 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 business days from Krollit warehouse for spare parts and accessories. Italian-speaking customer support available for technical documentation and compatibility verification with the reference machine. Krollit has been an official distributor since 2007.
Who is the annular cutter Vario HSS PLUS KBK, 14/18/22, drilling depth 30 mm for?
The annular cutter Vario HSS PLUS KBK, 14/18/22, drilling depth 30 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 compatible machines: replacement or original tool for the specified machine.
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Out-of-spec materials: check machinable material and tool geometry before use.
Frequently asked questions
What is an annular cutter used for?
It creates large diameter holes in sheet metal and metal, removing only the outer ring and leaving a central core.
Annular cutters are much more efficient than traditional drills for large diameters: they remove only the necessary material, reduce the drill's effort, and produce cleaner holes.
What steel is it made of?
Made of HSS (High-Speed Steel), a rapid steel for most mild steels, aluminum, and standard ferrous materials.
HSS withstands temperatures up to 600 °C without losing sharpness. For hardened materials or serial production, consider HSS-Co versions or those with hard metal inserts.
What machine is it mounted on?
It can be mounted on magnetic drills (core drills) and milling machines with a standard Weldon or TCT shank.
Magnetic drills are the most common choice for annular cutters, thanks to their strong magnetic adhesion and controlled feed. Check the shank type before purchase.
What drilling depth does it reach?
Bernardo annular cutters 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 of 30-55 mm, the long version is needed. Greater thicknesses require custom cutters.
How do you lubricate it during processing?
Use cutting oil or cooling emulsion applied directly to the cutting point. Coolant reduces heat and extends useful life.
For hard steels or high thicknesses, lubrication is essential: without coolant, the cutter overheats, loses sharpness, and can break prematurely. Recommended cutting speed: 20-30 m/min on mild steel.
