Κολωνοειδές τρυπάνι GB 55 SK NC VARIO

Bernardo GB 55 SK NC VARIO

The GB 55 SK NC VARIO drill is standard equipped with a large cross table and a two-axis digital readout, enabling not only drilling but also precise milling operations. Automatic spindle feed and tapping functions significantly increase the capabilities of the machine. The stepless speed adjustment in the range of 55–2200 rpm, combined with its robust construction and high drilling parameters, make this model suitable for both series and industrial production. The NC version features a programmable controller for setting drilling depth, spindle speed, and automatic tapping cycles. Drilling capacity is 50 mm, tapping up to M42.

Key features:
• NC version with programmable controller for drilling depth, spindle speed, and automatic tapping settings
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• Six-range automatic spindle feed adjustable via electromagnetic clutch, including tapping function
• Solid machine construction ensures vibration-free operation
• Powerful drive motor designed for continuous operation
• Two-axis digital display for precise machining
• Rigid base plate with T-slots and integrated cooling system
• Rich standard equipment
• Quiet operation due to hardened and ground gear wheels
• Machine guards compliant with the latest CE standards
• Automatic tool ejector
• Quick tool change with automatic ejector
• Standard electronic indicators for drilling depth and spindle speed
• Stepless spindle speed regulation

Technical Specifications:
• Max drilling capacity: 50 mm
• Drilling capacity in castings: 60 mm
• Max tapping capacity: M42
• Drill chuck: 1–13 mm / B16
• Spindle taper: MK4
• Spindle speed min.: 55 rpm
• Spindle speed max.: 2,200 rpm
• Infinitely variable speed range: 55–348 / 348–2,200 rpm
• Drive transmission: gearbox
• Automatic spindle feed rates: 0.08 / 0.12 / 0.17 / 0.24 / 0.35 / 0.50 mm/rev
• Drill table tilt: -45° to +45°
• Max spindle-to-column distance: 380 mm
• Max spindle-to-table distance: 480 mm
• Max spindle-to-base distance: 1,165 mm
• Quill stroke: 210 mm
• Column diameter: 150 mm
• Table size—width: 800 mm
• Table size—depth: 280 mm
• Cross table travel (X×Y): 415×290 mm
• T-slot configuration (number/size/spacing): 14 mm
• Motor power S1 100%: 3.0 kW
• Voltage: 400 V
• Dimensions (W×D×H): 1,230×1,240×2,310 mm
• Approx. weight: 800 kg

Scope of delivery:
• ES-12H LCD two-axis digital display
• Cross table
• Drill chuck 1–13 mm / B16
• Arbor MK4 / B16
• Reducing sleeves MK4/3, MK4/2, MK3/1
• Coolant system
• Tapping mode
• Electromagnetic spindle
• Automatic tool ejector
• LED work light
• Movable guard
• Electronic depth and speed indicators
• Stepless spindle speed adjustment

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