Guede GTB 20/812 R+L is a professional pillar drill with an 800 W motor, weighing approximately 28 kg. Krollit, official Guede distributor since 2007.
- Power supply voltage: 400 V
- Frequency: 50 Hz
- Motor power: 800 W
- Operating mode: S2 – 15 min
- Number of speeds: 12 (210 – 2500 rpm)
- Spindle stroke: 80 mm
Who uses the GTB 20/812 R+L and for what
Mechanical workshops and metalworking shops use the GTB 20/812 R+L for precision drilling on steel and cast iron, threading with a tapping attachment, and repetitive work on parts of various sizes.
Its place in the Guede range
The Guede GTB 20/812 R+L is part of the Guede pillar drill range, distributed in Italy by Krollit since 2007. The Guede range includes models of various categories and performances: to choose the right machine for your use case, you can consult the Guede catalog on Krollit or contact customer support for assistance with selection.
Krollit logistics and support
Machine shipping in 5-9 working days (7 days for 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 GTB 20/812 R+L for?
The GTB 20/812 R+L 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 attachment.
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Maintenance technicians and repair shops: repetitive drilling work on parts of various sizes.
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Occasional hobby use: professional machine: for domestic use, consider compact bench models.
Spindle, tools and speed
| Number of speeds |
12 (210 – 2500 rpm) |
| Spindle taper |
MK2 |
| Drill chuck taper |
B16 |
| Spindle to table distance |
max 270 mm |
| Spindle to base distance |
max 520 mm |
Table, dimensions and geometry
| Work surface |
260 × 260 mm |
| Table tilt |
±45° / 360° rotating |
| Column diameter |
70 mm |
| Dimensions (L × W × H) |
650 × 340 × 1010 mm |
| Cable length |
200 cm (H07RN-F) |
| Weight |
approx. 28 kg |
Motor and power supply
| Power supply voltage |
400 V |
| Frequency |
50 Hz |
| Motor power |
800 W |
Other specifications
| Operating mode |
S2 – 15 min |
| Outreach |
170 mm |
| Base |
240 × 410 mm |
| Sound level LWA |
76.3 dB |
| Protection class |
I |
| Rotation |
Right/Left |
| Spindle stroke |
80 mm |
| Chuck capacity |
1 – 16 mm |
Frequently asked questions
What is the drilling capacity of the GTB 20/812 R+L?
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 do you adjust the spindle speed?
Via mechanical belt or gear change in stepped models, via inverter or variator in Vario models.
Vario models allow continuous adjustment, while stepped models require moving the belt to different pulleys. Correct speed selection based on drill 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) fittings 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 attachment?
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.
How much does the machine weigh and what installation does it require?
Weight varies from approximately 25 kg (compact bench models) to over 250 kg (industrial Profi models).
Bench models are installed on a sturdy workbench, while pillar or radial models require floor fixing with expansion anchors for stability during drilling.
