The Bernardo NTS 250 PRO is a professional sharpening machine with a 150 W motor and a weight of 15 kg. Krollit, official Bernardo distributor since 2007.
- Leather wheel: 200 x 30 x 12 mm
- Grinding wheel speed: 95 rpm
- Power consumption: 150 W
- Voltage: 230 V
- Width: 430 mm
- Depth: 265 mm
Who uses the NTS 250 PRO and for what
Mechanical workshops and tool laboratories use the NTS 250 PRO for sharpening drill bits, milling cutters, and cutting tools, restoring the geometry of worn tools.
Its place in the Bernardo range
The Bernardo NTS 250 PRO is part of the Bernardo sharpening machine range, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performances: 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 working days (7 days to the South). 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 NTS 250 PRO for
The NTS 250 PRO 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: for HM, a CBN/diamond grinding wheel is needed: check model compatibility.
Technical Specifications
| Leather wheel |
200 x 30 x 12 mm |
| Grinding wheel speed |
95 rpm |
| Power consumption |
150 W |
| Voltage |
230 V |
| Width |
430 mm |
| Depth |
265 mm |
| Height |
410 mm |
| Weight |
15 kg |
| Grinding wheel |
250 x 50 x 12 mm (white corundum grit 220) |
Frequently Asked Questions
What can the NTS 250 PRO 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?
Bernardo professional 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 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 sharpening machines offer manual drip cooling or a dedicated pump.
Cooling prevents tempering of the tool during sharpening and maintains the hardness of the edge. 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 sharpening machines are installed on a sturdy workbench, while pillar models require floor mounting for stability.
