Bernardo Pillar Drill GB 55 NC Vario – Touchscreen Control and Automatic Feeds
The Bernardo GB 55 NC Vario pillar drill is a powerful and precise professional machine, designed for drilling, reaming, and tapping applications up to M42. All settings are made via the large touchscreen display, making function management simple and intuitive.
The machine features 6 automatic feeds controlled by an electromagnetic clutch, motorized table height adjustment, and a two-stage gearbox for a speed range of 50 to 2200 rpm. The solid cast iron table, surface-treated, can be tilted from -45° to +45° and allows for clamping large workpieces thanks to its T-slots.
The GB 55 NC Vario comes standard with a tapping device, automatic tool ejector, coolant pump, and integrated LED light. Guaranteed concentricity ≤0.02 mm, a robust polished steel column, and oil-bath gears complete a high-quality machine for workshops and industries.
Key Specifications
Touchscreen control for all operational settings
Motorized table height adjustment
6 automatic feeds via electromagnetic clutch
Variable speed range (50–2200 rpm) with two mechanical stages
Guaranteed concentricity ≤0.02 mm, measured at the spindle
Cast iron table tiltable from -45° to +45° with 14 mm T-slots
Tapping device included for operations up to M42
Automatic tool ejector included as standard
Coolant pump and LED light for safe and precise machining
Polished steel column Ø 180 mm, heavy-duty structure for stability
Ground gears in oil bath for smooth and durable operation
Technical Data:
| Specification |
Value |
| Drilling capacity in steel |
50 mm |
| Drilling capacity in cast iron |
60 mm |
| Max. tapping capacity |
M42 |
| Chuck |
1 – 13 mm / B16 |
| Spindle taper |
MT 4 |
| Spindle speed / 2 stages |
50 – 316 / 316 – 2200 rpm |
| Automatic feeds |
0.08 / 0.12 / 0.17 / 0.24 / 0.35 / 0.50 mm/rev |
| Spindle–column distance |
360 mm |
| Max. spindle–table distance |
580 mm |
| Spindle–base distance |
1185 mm |
| Spindle stroke |
225 mm |
| Column diameter |
180 mm |
| Table dimensions / T-slots |
570 x 480 mm / 14 mm |
| Usable base area |
435 x 445 mm |
| Motor power |
3.0 kW |
| Machine dimensions (L x W x H) |
750 x 1020 x 2340 mm |
| Weight |
approx. 630 kg |
Package Contents:
Drill chuck 1–13 mm / B16
Spindle arbor MT 4 / B16
Morse taper sleeves MT 4/3, MT 4/2, MT 3/1
Motorized table lift
Coolant device
Integrated touchscreen
Electromagnetic spindle feed
Automatic tool ejector
Tapping device
LED work light
Initial fill with Shell Tellus 46
Digital speed display
Digital drilling depth display
Height-adjustable guard
Why buy the GB 55 NC Vario Pillar Drill from Krollit
Buying the GB 55 NC Vario Pillar Drill from Krollit means choosing not only a professional metalworking machine, but also concrete support before and after purchase.
Krollit assists professionals, craftsmen, and workshops in choosing the most suitable machine, offering assistance, technical support, and spare parts management.
Logistics
Bernardo shipping: 5–9 business days (7 days to the South of Italy). Original spare parts available with 3–5 business days shipping. Customer support available in Italian.
Frequently Asked Questions
What is the NC touchscreen system and how does it change work compared to a standard drill?
The NC system of the GB 55 NC Vario automatically calculates the optimal speed by entering the tool diameter and material – it eliminates manual searching in a speed chart. The touchscreen sets speed, depth, and feed in seconds instead of the minutes required for belt changes or manual adjustment. The electromagnetic axis lock maintains the programmed position between holes. For series production of identical parts, repeatability is a concrete advantage compared to manually adjusted drills.
What is the maximum drilling diameter in steel and tapping size with the GB 55 NC Vario?
Nominal drilling: Ø 55 mm in S235 steel. Tapping: up to M42. The capacity in AISI 304 stainless steel is reduced by 30–40%. For large diameter drilling (over Ø 35 mm), use the lowest available speed with automatic feed and abundant coolant.
What does the electromagnetic engagement of automatic feeds specifically allow?
With electromagnetic engagement, the automatic feed is activated and deactivated via the touchscreen without touching physical mechanisms. For a series of identical holes: the depth is set once, the engagement is activated for the first hole, and the machine reaches the depth and retracts automatically. Typical cycle per hole: 3–5 seconds compared to 15–20 seconds for manual feed. For 100 identical holes, this saves 15–25 minutes.
Is the drilling table inclinable?
Yes – the table of the GB 55 NC Vario is hand-scraped cast iron and can be tilted from -45° to +45°, with motorized elevation via a button. Motorized elevation eliminates the need to unscrew and manually crank the toothed column – on heavy machines like this (over 500 kg), it's a concrete advantage in terms of time and effort.
Are spare parts available?
Original spare parts available with 3–5 business days shipping. Customer support available in Italian.
