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CORMAK GOLIAT 800x4000

The CORMAK GOLIAT 800 × 4000 (CJ6280YC/4000)

Main Advantages
Versatile machining capabilities – the GOLIAT 800 × 4000 enables external and internal turning, taper turning, polishing, metric, imperial, module and DP threading, drilling, and broaching operations.
Heavy-duty cast iron bed construction – provides maximum vibration damping. The bed is hardened and precisely ground, ensuring excellent torsional rigidity, long service life, and machining accuracy.
Central feed control system – equipped with a lead screw and feed shaft for threading and automatic longitudinal and cross feeds.
3-axis digital readout system – displays precise position values for longitudinal movement, cross slide movement, and compound slide movement using optical scales and electronic signal processing.
High-quality spindle bearing system – reinforced spindle support with precision bearings ensures smooth operation and high machining stability.
High machining capacity – large spindle bore of 105 mm, center distance of 4000 mm, 315 mm 3-jaw chuck, 400 mm bed width, and a powerful 7.5 kW motor provide excellent performance for large workpieces.
Rapid longitudinal and cross feed system – significantly reduces machining time and improves productivity.
Hardened and ground spindle gears – ensure quiet operation, durability, and reliable power transmission.
Automatic feed and threading capability – the lead screw and feed shaft allow precise thread cutting and automatic feeds.
Ergonomic control panel – allows easy adjustment of spindle speeds and automatic feed parameters.
Threading dial indicator – enables accurate thread engagement and repeatable threading operations.
Removable bed gap section – allows machining of oversized components such as discs. With the gap removed, the machine can handle workpieces with a maximum diameter of 1000 mm.

Technical Specifications
Maximum turning diameter over bed Ø800 mm
Maximum turning diameter over cross slide Ø560 mm
Maximum turning diameter in bed gap Ø1000 mm
Bed gap length 225 mm
Distance between centers 4000 mm
Bed width 400 mm
Maximum tool size 25 × 25 mm
Maximum compound slide travel 140 mm
Maximum cross slide travel 350 mm
Spindle bore Ø105 mm
Spindle nose D1-8 CAMLOCK
Spindle speeds 12 speeds (36–1600 RPM)
Longitudinal feed range 65 steps (0.063–2.52 mm/rev)
Cross feed range 65 steps (0.027–1.07 mm/rev)
Metric threads 22 ranges (1–14 mm)
Imperial threads 25 ranges (28–2 TPI)
Module threads 18 ranges (0.5–7 mm)
DP threads 24 ranges (56–4 DP)
Rapid longitudinal feed 4.5 m/min
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Rapid cross feed 1.9 m/min
Tailstock quill diameter 75 mm
Tailstock taper MT5
Maximum tailstock quill travel 150 mm
Tailstock lateral adjustment ±15 mm
Main motor power S1/S6 7.5 / 9 kW, 400 V
Rapid feed motor power 250 W
Coolant pump power 60 W
Machine dimensions (L × W × H) 5700 × 1150 × 1800 mm
Machine weight approx. 5300 kg (±2%)

Standard Equipment
3-axis digital readout system
Self-centering 3-jaw chuck, 315 mm
Independent 4-jaw chuck, 400 mm
Faceplate, 400 mm
Rapid feed system
Fixed steady rest
Follow rest
Two fixed centers MT5
Spindle reducing sleeve
Coolant system
Work lighting
Chuck and tool post keys
Complete set of service tools
Operating manual
CE Declaration of Conformity