The Bernardo 4-piece boring bar set 46-1009 is a cutting tool for professional use available at Krollit, an official Bernardo distributor since 2007.
- Shank: 10 / 12 / 16 / 20 mm
Who uses the 4-piece boring bar set 46-1009 and for what
Machine shops and toolmaking workshops use the 4-piece boring bar set 46-1009 for cutting, drilling, or sharpening operations on materials compatible with the tool's geometry.
Its place in the Bernardo range
The Bernardo 4-piece boring bar set 46-1009 is part of Bernardo's range of cutting tools, 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 selection assistance.
Krollit logistics and support
Shipping within 3-5 business 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 the 4-piece boring bar set 46-1009 is for
The 4-piece boring bar set 46-1009 is recommended for the following professional profiles:
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Machine shops and toolmaking workshops: cutting and sharpening operations on compatible materials.
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Users with a compatible machine: replacement part 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 this boring bar set for?
It is used with milling machines for precision internal boring for the operations indicated in the product title.
The choice of the specific model depends on the number of pieces (4 pcs) and diameters. Compatible with milling machines with standard Morse taper or BT.
What steel are they made of?
Bernardo lathe tools are made of HSS (High Speed Steel) or Carbon Steel depending on the model indicated in the title.
HSS withstands temperatures up to 600 °C and is suitable for most woods and materials. Carbon Steel is cheaper but has a shorter service life, suitable for hobby use.
How many pieces does the set contain?
The number of pieces is indicated in the title (e.g., "5 pieces", "6 pieces", "8 pieces"). Larger sets cover a wider range of machinable profiles.
Starter sets (4-5 pieces) for beginners, professional sets (6-8 pieces) for complete operations with gouges, flat chisels, scrapers, and parting blades.
Do they need to be sharpened periodically?
Yes, lathe tools need to be sharpened regularly to maintain a clean cut. The frequency depends on the intensity of use and the material being worked.
For HSS blades, sharpening is recommended every 8-15 hours of actual work. Krollit provides dedicated Bernardo sharpeners (BSG, DG series) to maintain the correct cutting edge angle.
How should they be stored correctly?
Store in a dedicated drawer or mat with individual protection, lightly oiled to prevent oxidation. Avoid contact between cutting edges.
Surface oxidation reduces cutting quality and accelerates wear. Clean after each use and apply a protective layer (machine oil or WD-40). Store in a dry place, away from heat sources.
