The Bernardo DG 20 CD drill bit sharpener is a professional-grade sharpener, with a 0.12 kW motor, weighing approx. 9.2 kg. Krollit, official Bernardo distributor since 2007.
- Sharpenable drill bit diameter: 4 – 20 mm
- Sharpening angle: 135° fixed
- Grinding wheel speed: 4400 rpm
- Motor power: 0.12 kW
- Power supply: 230 V
- Machine dimensions: 290 × 180 × 170 mm
Who uses the DG 20 CD drill bit sharpener and for what
Mechanical workshops and tool laboratories use the DG 20 CD drill bit sharpener for sharpening drill bits, milling cutters, and cutting tools, restoring the geometry of worn tools.
Its place in the Bernardo range
The Bernardo DG 20 CD drill bit sharpener is part of the Bernardo sharpening machine 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
Machine shipping in 5-9 business days (7 days for Southern Italy). For spare parts and accessories, shipping in 3-5 business days from Krollit warehouse. Customer support in Italian available for technical documentation, product sheets, and spare parts order management. Krollit has been an official distributor since 2007.
Who is the DG 20 CD drill bit sharpener for
The DG 20 CD drill bit sharpener is recommended for the following professional profiles:
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Mechanical workshops and tool laboratories: sharpening HSS drill bits, milling cutters, and cutting tools.
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Industrial maintenance technicians: restoring the geometry of worn tools to reduce replacement costs.
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Sharpening carbide or ceramic tools: CBN/diamond grinding wheel is needed for carbide; check model compatibility.
Technical specifications
| Sharpenable drill bit diameter |
4 – 20 mm |
| Sharpening angle |
135° fixed |
| Grinding wheel speed |
4400 rpm |
| Motor power |
0.12 kW |
| Power supply |
230 V |
| Machine dimensions |
290 × 180 × 170 mm |
| Weight |
approx. 9.2 kg |
| Grinding wheel type |
SDC |
Frequently Asked Questions
What can the DG 20 CD drill bit sharpener sharpen?
HSS drill bits, end mills, disc cutters, and cutting tools within the dimensional limits of the model.
Sharpening capacity is limited by the grinding wheel diameter and angular adjustment. For carbide (HM) tools, check CBN/diamond grinding wheel compatibility.
What sharpening precision does it offer?
Professional Bernardo models allow sharpening with tolerances of ±0.02 mm on the cutting angle.
Precision depends on the machine's rigidity and the quality of the guides. Models with fine calibration allow angular adjustment to the tenth of a degree.
What type of grinding wheel is supplied?
Corundum grinding wheel for standard HSS sharpening. For HM, a CBN or diamond grinding wheel needs to be purchased separately.
Krollit supplies original Bernardo replacement grinding wheels with a delivery time of 3-5 business days.
Does it have a cooling system?
Professional sharpeners offer manual drip cooling or a dedicated pump.
Cooling prevents the tool from tempering during sharpening and maintains edge hardness. It is essential for delicate sharpening.
How much does the machine weigh?
See the "Weight" data in the technical table: professional models weigh from 50 to over 200 kg.
Benchtop sharpeners are installed on a sturdy workbench, while floor-standing models require floor mounting for stability.
