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Rolls-Royce / Bergen
6LC25:33-GS-50Hz
The Rolls‑Royce/Bergen 6LC25:33‑GS‑50Hz is a medium‑speed, 6‑cylinder diesel generator set delivering up to 1 539 kW (≈1 924 kVA) at 50 Hz, designed for shipboard auxiliary power with fuel flexibility (HFO/MDO).
1620.0 kW
Power
Engine Specifications
6
Cylinders
250 mm
Bore
330 mm
Stroke
4-stroke
Stroke Type
Components & Design
Component data being added…
Technical Data
BMEP
25 bar @ 750 rpm (Propulsion), 26 bar @ 720 rpm (Genset)
SFOC (100% MCR)
171-177 g/kWh (MDO basis, varies by cylinders)
SFOC (85% MCR)
173-175 g/kWh
Lube Oil Consumption
0.5 g/kWh
Mean Piston Speed
11.2 m/s (@ 750 rpm), 10.8 m/s (@ 720 rpm)
Dry Weight L6P
42,400 kg
Dry Weight L8P
53,500 kg
Dry Weight L9P
56,400 kg
Dry Weight V12P
71,867 kg
Genset Weight L6A
48,300 kg (engine only)
Genset Weight L8A
60,600 kg (engine only)
Genset Weight L9A
62,400 kg (engine only)
Engine Type
4-stroke, turbocharged with 2-stage charge air cooler
Service Intervals
Extended up to 25,000 hours
IMO Compliance
Tier II (standard), Tier III (with SCR)
Electrical Output L6 50Hz
3,515 kW genset
Electrical Output L8 50Hz
4,690 kW genset
Electrical Output L9 50Hz
5,285 kW genset
Electrical Output V12 60Hz
6,750 kW genset
Electrical Output V12 50Hz
7,050 kW genset
power kw
1620
rpm
750
fuel type
HFO/MDO
configuration
L
genset kw
1539
genset kva
1924
frequency hz
50
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Common failures & inspection points
Piston rod scoring risk due to heavy scavenge space dirt accumulation
Cylinder liner wear and ovality development requiring periodic measurement via micrometer in port-starboard and forward-aft positions
Turbocharger oil starvation and contamination (>90% of turbo failures) - requires monitoring lube oil quality and pressure
Water or fuel in scavenge space (leak detection through piston inspection at BDC) - indicates potential head gasket or fuel valve seat leakage
Fuel injection system wear requiring maintenance - Bergen standard practice includes complete cylinder head overhaul kits available with 3-piece conrod design
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
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Equipment Model #124758
· ✓ still in production