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Caterpillar MaK

MaK M43C

Der MaK M43C ist der Standard-Hauptmotor der Caterpillar/MaK-Baureihe für mittelgroße Containerschiffe, RoRo-Schiffe und Offshore-Versorger. MaK (Maschinenbau Kiel, 1997 von Caterpillar übernommen) produziert in Kiel und Rostock. Der M43C wird als mechanische Hauptmaschine mit Getriebe + CPP oder als Generator-Antrieb eingesetzt.

4,800-10,800 kW (6-9L, 12V, 16V)
Capacity
HFO / VLSFO / MGO
Medium

Engine Specifications

6L, 7L, 8L, 9L, 12V, 16V
Cylinders
430 mm
Bore
610 mm
Stroke
26.5 bar
MEP

Components & Design

Component data being added…

Technical Data

SFOC (Specific Fuel Oil Consumption) 175–178 g/kWh (HFO optimized)
Lube Oil Consumption 0.6 g/kWh standard; 0.3 g/kWh optional
Engine Type 4-stroke turbocharged intercooled non-reversible with direct injection
Cylinder Block Material Nodular cast iron (Kugelgraphitguss)
Turbocharger Maintenance Interval 15,000 operating hours (inspection/cleaning)
Per-Cylinder Power Output ~700–760 kW/cylinder
Engine Centre Distance 3400 mm
Charge Air Cooler Cast casing with 40% increased base area for turbocharger mounting
type 4-Stroke Medium-Speed Trunk Piston Engine
sfoc g kwh 176
tier IMO Tier II
variant count approx 6
period start year 2000
drive type Gearbox + CPP or Generator
construction Trunk piston, inline or V, conventional fuel injection or CR

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Common failures & inspection points

Heavy fuel oil corrosion of cylinder liners and piston rings due to high sulfur content; nodular cast iron offers improved wear resistance vs. gray iron but req
Turbocharger bearing wear and seizure from contaminated or degraded lube oil; tight clearances vulnerable to sluggish operation or complete seizure if oil break
Fuel injector nozzle carbon deposits and stiction (sticking) from poor fuel quality (high viscosity, low volatility); coke accumulation at nozzle holes can caus
Intake and exhaust rocker arm bearing wear requiring clearance checks every 30,000 hours; bearing surfaces (ball pin, adjusting screw) subject to friction and w
Main running gear (crankshaft, bearings, piston skirts, liners) susceptible to seizure and discoloration from inadequate lube oil separation/filtration; long-st

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

Service & Maintenance

Cat/MaK intervals: Oil change 500-1,000 hrs, Injectors 8,000-12,000 hrs, Piston 18,000-24,000 hrs, Top overhaul 24,000 hrs, Major overhaul 48,000 hrs.

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Replacement Parts

Caterpillar global. Lead time: 1-4 Wochen.
Equipment Model #38024 · ✓ still in production