The Bernardo boring head with 75 mm diameter for precision boring is a cutting tool for professional use, available from Krollit, an official Bernardo distributor since 2007.
- Head diameter 75 mm
- Boring bar diameter 18 mm
- Fine adjustment 0.01 mm / Scale line
- Boring diameter 12 - 225 mm
- Cross slide adjustment 25 mm
- Height 80.2 mm
Who uses the 75 mm diameter precision boring head and for what
Mechanical workshops and tool labs use the 75 mm diameter precision boring head for cutting, drilling, or sharpening operations on materials compatible with the tool's geometry.
Its place in the Bernardo range
The Bernardo 75 mm diameter precision boring head 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 assistance with selection.
Krollit Logistics and Support
Shipping 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 is the 75 mm diameter precision boring head for
The 75 mm diameter precision boring head is recommended for the following professional profiles:
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Mechanical workshops and tool labs: cutting and sharpening operations on compatible materials.
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Users with compatible machines: replacement part 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 this precision boring head used for?
It is used with milling machines and machining centers for precision holes for the operations indicated in the product title.
The choice of the specific model depends on the diameter Ø 75 mm and adjustments, compatible with milling machines with standard tool holders.
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 resists temperatures up to 600 °C and is suitable for most woods and materials. Carbon Steel is cheaper but has a shorter lifespan, suitable for hobby use.
How many pieces are in the set?
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 machining with gouges, flat chisels, scrapers, and parting blades.
Do they need to be sharpened periodically?
Yes, lathe tools should be sharpened regularly to maintain a clean cut. The frequency depends on the intensity of use and the material being machined.
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 film (machine oil or WD-40). Store in a dry place, away from heat sources.
