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MaK (Caterpillar)

9LM32E-GS-60Hz

The MaK 9LM32E‑GS is a 9‑cylinder medium‑speed diesel engine coupled to an integrated generator set delivering roughly 4.3 MW (5.3 MVA) at 60 Hz, designed for continuous auxiliary power on large commercial vessels.

MaK (Caterpillar) 9LM32E-GS-60Hz
4500.0 kW
Power

Engine Specifications

9
Cylinders
320 mm
Bore
480 mm
Stroke
4-stroke
Stroke Type

Components & Design

Component data being added…

Technical Data

Bohrung 320 mm
Hub 460 mm (M32E), 480 mm (M32C)
Hub-Bohr-Verhaeltnis 1.4375 (M32E), 1.5 (M32C)
Hubraum pro Zyl. 37 l/Zyl. (M32E)
Leistung/Zyl. M32E ~550 kW/cyl. at 720-750 rpm
SFOC M32E ~190-210 g/kWh (Standard); Mit Part Load Kit bis 24 g/kWh Einsparung möglich
Drehzahl 720/750 rpm (konstante Drehzahl)
Emissionen IMO Tier II / EPA Tier 2 konform
Brennstoffflexibilität HFO, MGO, LS-Diesel
Wartungsintervalle Klassenführend; Zahnriemen/Ventile 10000h; Kolbenringe 20000h
power kw 4500
rpm 900
fuel type HFO/MDO
configuration L
genset kw 4275
genset kva 5344
frequency hz 60

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Common failures & inspection points

Seized piston rings due to carbon deposits in ring groove

Visual inspection of piston/grooves for coking; check oil consumption trend (>0.3%); exhaust color (blue smoke with ring seizure)

Charge exchange/scavenge air problems possible with older M32C series

Check scavenge air pressure lines for contamination/leaks; monitor compression ratio (compression test)

Turbocharger corrosion (salt water environment, seawater cooling without protective coating possible on older engines)

Visual inspection of turbocharger for rust spots, check bearing clearance; monitor lubrication pressure/oil contamination

Fuel injection system: wear of nozzles, valve lift timing (load-dependent via rocker arm)

Check fuel lines for dripping leaks; observe injection signs (black smoke, starting difficulties); visually inspect pressure lines at test pressure every 500 h

Piston cooling and cylinder liner wear during long-term operation (>50,000 h without overhaul)

Measure cylinder bore wear (plug gauge, >0.5 mm radial critical); piston clearance (0.3-0.8 mm); oil quality and wear metal analysis (Fe, Cu, Sn)

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #125549 · ✓ still in production