Bernardo Radial Drill RD 1250 x 50

Bernardo Radial Drill RD 1250 x 50 – Power and precision for machining large workpieces

The Bernardo RD 1250 x 50 radial drill is a robust and reliable industrial machine, designed for professional operations such as drilling, counterboring, reaming, and tapping up to M42. With a drilling capacity up to Ø 50 mm and a radial arm with a horizontal travel of 900 mm, it offers versatility and stability even in the most demanding applications.

The oversized base (1300 x 980 mm) and the 630 x 500 mm box table allow for secure clamping of voluminous workpieces. The ground and torsion-free column, independent hydraulic clamps, and hardened and polished gears running in an oil bath ensure precise and smooth operations.

Thanks to the 16-speed gearbox (25–2000 rpm) and 16 automatic spindle feeds (0.04–3.2 mm/rev), the machine adapts to various materials and operations. Standard features include: cooling pump, LED light, lifting motor, adjustable protection, and professional accessories.

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Key Specifications

Drilling capacity up to Ø 50 mm and tapping up to M42
Radial arm with 900 mm horizontal travel
Vertical headstock travel 580 mm and spindle travel 335 mm
Spindle speed with 16 ranges (25–2000 rpm)
Automatic spindle feeds (16 steps: 0.04–3.2 mm/rev)
Ground and torsion-free column for smooth operation and precision
Independent hydraulic clamps for column, arm, and headstock
Oversized base 1300 x 980 mm and box table 630 x 500 x 500 mm
4.0 kW main motor for intensive operations
Heavy-duty 3000 kg structure for vibration reduction
Adjustable protection, LED light, and cooling system comply with CE standards

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Technical table:

Specification	Value
Max. drilling capacity	50 mm
Max. tapping capacity	M42
Spindle–column distance min./max.	320 – 1220 mm
Vertical headstock movement	580 mm
Horizontal headstock travel	900 mm
Spindle travel	335 mm
Spindle taper	MT 5
Spindle speed	(16) 25 – 2000 rpm
Automatic feeds	(16) 0.04 – 3.2 mm/rev
Spindle–box table distance	0 – 670 mm
Spindle–base distance	330 – 1170 mm
Base clamping area	1300 x 980 mm
Box table dimensions	630 x 500 x 500 mm
Motor power	4.0 kW
Machine dimensions (L x W x H)	2035 x 1000 x 2830 mm
Weight	approx. 3000 kg

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Package contents:
Box table 630 x 500 x 500 mm
Morse sleeves MT 5/4, MT 4/3, MT 3/2
LED work lamp
Initial fill Shell Tellus 46
Cooling device
Lifting motor
Hydraulic motor
Height-adjustable protection
Tool set

Logistics

Bernardo shipping: 5–9 working days (7 days to the South). Original spare parts available with 3–5 working days shipping. Customer support available in Italian.

Frequently Asked Questions

What is a radial drill and when is it needed compared to a pillar drill?

In a pillar drill, the workpiece is moved to center the drill bit over the hole. In a radial drill, the spindle moves: the radial arm translates along the column (height) and rotates around it (angle), positioning the spindle exactly above the drilling point on fixed and heavy workpieces that are not easily moved. It is the choice for large workpieces, metal fabrication, and operations on already assembled machines.

Is the radial arm motorized or manual?

It depends on the model. Basic versions of the RD series have manual arm movement with screw locking. NC or Vario versions may have Z-axis motorization. Check the model specifications in the technical table.

What is the purpose of right/left (R/L) spindle rotation?

Left (L) rotation allows the use of left-hand cutters and the loosening of screws with left-hand threads. It is also useful for manual tapping operations where advancement (right) and retraction (left) are alternated to break the chip.

Are spare parts and assistance available?

Original Bernardo spare parts available with 3–5 working days shipping. Customer support available in Italian.

How much space is needed for installation?

The turning radius of the arm determines the minimum operating area. Leave clear space equal to the arm's radius on all sides of the column. For machines over 500 kg, coordinate with Krollit for the necessary unloading equipment.