The Bernardo HSS CDL standard core drill set, 14 - 24 mm, 50 mm drilling depth, is a cutting tool for professional use available from Krollit, an official Bernardo distributor since 2007.
- With Weldon 19 mm shank
- High-speed steel
- Excellent chip removal
- Drilling depth 50 mm
- 1 pc. each of 14 / 16 / 18 / 20 / 22 / 24 mm
- 1 pc. ejector pin
Who uses the HSS CDL standard core drill set, 14 - 24 mm, 50 mm drilling depth, and for what
Mechanical workshops and tool shops use the HSS CDL standard core drill set, 14 - 24 mm, 50 mm drilling depth, for cutting, drilling, or sharpening operations on materials compatible with the tool's geometry.
Its place in the Bernardo range
The Bernardo HSS CDL standard core drill set, 14 - 24 mm, 50 mm drilling depth, 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 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 HSS CDL standard core drill set, 14 - 24 mm, 50 mm drilling depth, for?
The HSS CDL standard core drill set, 14 - 24 mm, 50 mm drilling depth, is recommended for the following professional profiles:
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Mechanical workshops and tool shops: cutting and sharpening operations on compatible materials.
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Users with compatible machines: original spare part or tool for the specified machine.
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Out-of-spec materials: verify workable material and tool geometry before use.
Frequently Asked Questions
What is this core drill set used for?
It is used with magnetic drills for large diameter holes in steel for the operations indicated in the product title.
The choice of specific model depends on material (HSS, HM, HSSCo5), coating (tin CDL/CDS, NACO), diameter range (14-22 mm or 14-24 mm), and drilling depth (35 mm). Compatible with magnetic drills with Weldon or TCT 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 work with gouges, flat chisels, scrapers, and parting tools.
Do they need to be sharpened periodically?
Yes, lathe tools must 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 supplies dedicated Bernardo sharpeners (BSG, DG series) to maintain the correct cutting edge angle.
How are they 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.
