The Bernardo GB 28 S Vario is a professional pillar drill with a drilling capacity of 28 mm, speeds of 90 – 980 / 1000 – 3000 rpm, a 1.5 kW / 400 V motor, and a weight of approx. 265 kg. Krollit, official Bernardo distributor since 2007.
- Max. drilling capacity: 28 mm
- Max. threading capacity: M16
- Chuck: 1 – 13 mm / B16
- Spindle taper: MT 3
- Spindle speed / 2 stages: 90 – 980 / 1000 – 3000 rpm
- Spindle-column distance: 250 mm
- Max. spindle-table distance: 780 mm
- Spindle-base distance: 1210 mm
Who uses the GB 28 S Vario and for what
Mechanical workshops and metalworking shops use the GB 28 S Vario for precision drilling on steel and cast iron, threading with a tapping head, and repetitive work on pieces of various sizes.
Its place in the Bernardo range
The Bernardo GB 28 S Vario is part of the Bernardo pillar drill range, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performance levels: to choose the machine suitable for your use case, you can consult the Bernardo catalog on Krollit or contact customer support for assistance with 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. Italian customer support available for technical documentation, product sheets, and spare parts order management. Krollit has been an official distributor since 2007.
Who the GB 28 S Vario is for
| Profile |
Compatibility |
Reason |
| Mechanical workshops and metalworking shops |
Suitable |
Precision drilling on steel and cast iron, threading with a tapping head |
| Maintenance workers and repair shops |
Suitable |
Repetitive drilling on pieces of various sizes |
| Occasional hobby use |
To be evaluated |
Professional machine: for home use, consider compact benchtop models |
Not suitable for: applications that go beyond the technical specifications declared by the manufacturer. For doubts about compatibility, contact Krollit customer service.
Machining capacity
| Max. drilling capacity |
28 mm |
| Max. threading capacity |
M16 |
Spindle and speed
| Chuck |
1 – 13 mm / B16 |
| Spindle taper |
MT 3 |
| Spindle speed / 2 stages |
90 – 980 / 1000 – 3000 rpm |
| Spindle-column distance |
250 mm |
| Max. spindle-table distance |
780 mm |
| Spindle-base distance |
1210 mm |
| Spindle stroke |
135 mm |
Table and dimensions
| Column diameter |
98 mm |
| Table dimensions / T-slots |
375 x 375 mm / 14 mm |
| Machine dimensions (L x W x H) |
540 x 790 x 2130 mm |
Motor and power supply
| Motor power S1 100% |
1.5 kW / 400 V |
| Motor power S6 40% |
2.2 kW / 400 V |
Other specifications
| Usable base plate |
420 x 340 mm |
| Weight |
approx. 265 kg |
Frequently Asked Questions
What is the drilling capacity of the GB 28 S Vario?
See the "Drilling capacity" data in the machine's technical table.
The capacity refers to standard unhardened steel. On harder materials or alloys, the actual capacity may be lower: reduce speed and feed to avoid stressing the spindle and tools.
How is the spindle speed adjusted?
Via mechanical belt or gear change in step models, via inverter or variator in Vario models.
Vario models allow continuous adjustment, while step models require moving the belt to different pulleys. Correct speed selection based on drill bit diameter and material extends tool life.
What spindle taper and type of tools does it support?
See "Spindle taper" in the technical table: typically MT 2, MT 3 or MT 4 depending on the model.
MT (Morse Taper) connections are international standards and accessories (arbors, keyless chucks, reductions) are commonly available on the market. Krollit supplies original Bernardo accessories.
Does the drill allow threading with a tapping head?
Only models with standard right/left rotation allow threading with automatic tap release.
Check the "Right/left rotation" or "Threading" specification: drills without mechanical reversal are not suitable for repetitive tapping.
What is the weight of the machine and what installation does it require?
The weight varies from about 25 kg (compact benchtop models) to over 250 kg (industrial Profi models).
Benchtop models are installed on a sturdy workbench, while pillar or radial models require floor mounting with expansion anchors for stability during drilling.
