Bernardo countersink 90°, 6 pcs., HSS is a cutting tool for professional use available on Krollit, official Bernardo distributor since 2007.
- Set of 6 HSS elements in a metal box
- with cylindrical shank
- 90° countersink angle, with 3 cutting edges
- According to DIN 335-C
- 1 pc. each 6.3 / 8.3 / 10.4 / 12.4 / 16.5 / 20.5 mm
Who uses the countersink 90°, 6 pcs., HSS and for what purpose
Mechanical workshops and tool laboratories use the countersink 90°, 6 pcs., HSS for cutting, drilling or sharpening operations on materials compatible with the tool's geometry.
Its place in the Bernardo range
Bernardo countersink 90°, 6 pcs., HSS 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 selection assistance.
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 countersink 90°, 6 pcs., HSS for
The countersink 90°, 6 pcs., HSS is recommended for the following professional profiles:
-
Mechanical workshops and tool laboratories: cutting and sharpening operations on compatible materials.
-
Users with compatible machines: original spare part or tool for the indicated machine.
-
Materials outside specifications: verify workable material and tool geometry before use.
Frequently Asked Questions
What is this HSS countersink used for?
It is used for finishing holes and deburring edges for the operations indicated in the product title.
The choice of the specific model depends on the angle (90°), number of pieces (6 pcs) and material (HSS). Compatible with drills with standard shank.
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 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 workable 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 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 angle of the cutting edges.
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.
