The Bernardo GHD 25 TN gear-driven drill with digital display is a pillar drill for professional use, with speeds (8) 105 – 2900 rpm, weight 140 kg. Krollit, official Bernardo distributor since 2007.
- Max. drilling capacity: 25 mm
- Max. threading: M10
- Quick-clamping drill chuck: 1 – 16 mm / B 16
- Morse taper: MK 3
- Spindle speed: (8) 105 – 2900 rpm
- Arm length: 255 mm
Who uses the GHD 25 TN gear-driven drill with digital display and for what purpose
Mechanical workshops and metalworking shops use the GHD 25 TN gear-driven drill with digital display for precision drilling on steel and cast iron, threading with a tapping tool, and repetitive work on pieces of various sizes.
Its place in the Bernardo range
The Bernardo GHD 25 TN gear-driven drill with digital display is part of the Bernardo pillar drill 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 GHD 25 TN gear-driven drill with digital display for?
The GHD 25 TN gear-driven drill with digital display is recommended for the following professional profiles:
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Mechanical workshops and metalworking shops: precision drilling on steel and cast iron, threading with a tapping tool.
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Maintenance personnel and repair shops: repetitive drilling work on pieces of various sizes.
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Occasional hobby use: professional machine: for home use, consider compact bench models.
Spindle, tools and speed
| Quick-clamping drill chuck |
1 – 16 mm / B 16 |
| Morse taper |
MK 3 |
| Spindle speed |
(8) 105 – 2900 rpm |
| Spindle / base plate distance |
535 mm |
Table, dimensions and geometry
| Arm length |
255 mm |
| Column diameter |
100 mm |
| Base plate working surface |
250 x 290 mm |
| T-slot size |
14 mm |
| Weight approx. |
140 kg |
Other specifications
| Max. threading |
M10 |
| Machine dimensions (L x W x H) |
500 x 570 x 1100 mm |
| Note: |
Without base |
| Max. drilling capacity |
25 mm |
| Spindle stroke |
120 mm |
| Motor input power S1 100% |
0.65 / 1.2 kW (400 V) |
| Motor output power S6 40% |
0.90 / 1.7 kW (400 V) |
Standard equipment
- Digital Spindle Display: For precise control and more comfortable machining.
- Quick-clamping drill chuck 1 – 16 mm / B 16
- Drill arbor MK 3 / B 16
- Digital spindle display
- Height-adjustable protective cover
Frequently Asked Questions
What is the drilling capacity of the GHD 25 TN gear-driven drill with digital display?
See the "Drilling capacity" data in the machine's technical table.
The capacity refers to standard unhardened steel. On harder materials or alloyed metals, 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 gear or belt 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 tool types 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, reducers) are commonly available on the market. Krollit supplies original Bernardo accessories.
Does the drill allow threading with a tapping tool?
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 approximately 25 kg (compact bench models) to over 250 kg (Profi industrial models).
Bench models are installed on a sturdy workbench, while pillar or radial models require floor mounting with expansion anchors for stability during drilling.
