The Bernardo 3-piece step drill bit set is a cutting tool for professional use available on Krollit, an official Bernardo distributor since 2007.
- Vendor: Bernardo
- Model: 3-piece step drill bit set
- Official Bernardo distributor since 2007
- Shipping from Krollit warehouse
Who uses the 3-piece step drill bit set and for what
Mechanical workshops and tool laboratories use the 3-piece step drill bit set for cutting, drilling, or sharpening operations on materials compatible with the tool's geometry.
Its place in the Bernardo range
The Bernardo 3-piece step drill bit set is part of the Bernardo cutting tool range, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performances: to choose the right machine for your use case, you can consult the Bernardo catalog on Krollit or contact customer support for selection assistance.
Krollit logistics and support
Shipping 3-5 business days from Krollit warehouse for spare parts and accessories. Italian customer support available for technical documentation and compatibility verification with the reference machine. Krollit has been an official distributor since 2007.
Who the 3-piece step drill bit set is for
The 3-piece step drill bit set is recommended for the following professional profiles:
-
Mechanical workshops and tool laboratories: cutting and sharpening operations on compatible materials.
-
Users with compatible machines: replacement part or original tool for the indicated machine.
-
Out-of-spec materials: verify workable material and tool geometry before use.
Frequently asked questions
Which machine is it compatible with?
Check the machine model or the indicated attachment (e.g., DG 20 M, BSG 30 Pro, Bernardo HM 25) in the title or technical sheet.
Bernardo tools are original spare parts for the machines in the Krollit catalog. For doubts about compatibility, contact customer service, specifying the machine's serial number.
CBN or diamond grinding wheel: which to choose?
CBN for sharpening drills and tools in HSS, hardened and case-hardened steels. Diamond ONLY for hard metal (carbide, HM).
CBN grinding wheels cut "cold" without dulling on HSS, maintaining the abrasive edge for a long time. Diamond grinding wheels should not be used on steel: the grains quickly dull, losing cutting ability.
What materials can it work on?
Depends on the geometry and material of the tool: HSS for common steels, HM/carbide for hard steels, CBN for HSS and case-hardened steels, diamond for hard metal.
Cobalt HM inserts (HSSE) work up to HRC 65. CBN grinding wheels cut HRC 55-70 steels, maintaining concentricity over time. For cast irons, evaluate green silicon carbide grinding wheels.
How is it stored and maintained?
In a dry environment, protected from impacts and oxidation. Grinding wheels should be periodically dressed with a diamond stick.
For abrasive grinding wheels, proper storage and periodic dressing preserve the cutting geometry. For HM inserts, storage in the original box is sufficient.
Is it an original Bernardo spare part?
Yes, Krollit has been an official Bernardo distributor since 2007 and only supplies original manufacturer tools.
Non-original compatible tools may have out-of-spec tolerances and compromise machining precision. Shipping 3-5 business days.
