The Bernardo 400 V is a professional-grade grinder with a 0.37 kW motor and a weight of 45 kg. Krollit, official Bernardo distributor since 2007.
- Collet diameter: 3 – 18 mm
- Max. grinding diameter: 25 mm
- Conical grinding: 0 – 180°
- Back angle: 0 – 45°
- Negative angle: 0 – 25°
- Spindle speed: 5000 rpm
Who uses the 400 V and for what
Mechanical workshops and tool laboratories use the 400 V for sharpening drill bits, milling cutters, and cutting tools, restoring the geometry of worn tools.
Its place in the Bernardo range
The Bernardo 400 V is part of the Bernardo grinder 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 assistance in selection.
Krollit logistics and support
Machine shipping in 5-9 working days (7 days to Southern Italy). For spare parts and accessories, shipping in 3-5 working 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 400 V for?
The 400 V is recommended for the following professional profiles:
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Mechanical workshops and tool laboratories: sharpening HSS drill bits, end mills, and cutting tools.
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Industrial maintenance technicians: restoring geometry of worn tools to reduce replacement costs.
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Sharpening carbide or ceramic tools: for carbide, a CBN/diamond grinding wheel is required: check model compatibility.
Processing capacity
| Max. grinding diameter |
25 mm |
| Back angle |
0 – 45° |
| Negative angle |
0 – 25° |
Table, dimensions and geometry
| Length |
450 mm |
| Width |
500 mm |
| Height |
400 mm |
| Weight |
45 kg |
Other specifications
| Collet diameter |
3 – 18 mm |
| Conical grinding |
0 – 180° |
| Divisor head positions |
24 (15°) |
| Spindle speed |
5000 rpm |
| Grinding wheel |
100 x 50 x 20 mm |
| Motor power |
0.37 kW |
| Voltage |
400 V (230 V option) |
Frequently asked questions
What can the 400 V sharpen?
HSS drill bits, end mills, disc cutters, and cutting tools within the dimensional limits of the model.
Sharpening capacity is limited by grinding wheel diameter and angle 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 a 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 is required, purchased separately.
Krollit supplies original Bernardo replacement grinding wheels with delivery times of 3-5 working days.
Does it have a cooling system?
Professional grinders offer manual drip cooling or a dedicated pump.
Cooling prevents tempering of the tool 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 grinders are installed on a robust workbench, while column models require floor fixing for stability.
