5LU32
The Hanshin 5LU32 is a compact 5‑cylinder, 2‑stroke main engine delivering up to 1 850 kW at 750 rpm, designed for coastal and feeder vessels where space and weight are limited.
Engine Specifications
Inspector Detail
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Designation decoded
5 for 5 cylinders, LU for L-type U variant, 32 for 320 mm bore. Specs: stroke 480 mm. Hanshin EL series.
Background
The 5LU32 is a compact Hanshin two-stroke with a 320 mm bore and 480 mm stroke (S/B 1.5). Somewhat larger than the 260/280 mm models, used on larger coastal freighters and small merchant ships. A stroke-to-bore ratio of 1.5 is typical for Hanshin — shorter than classic slow-speed engines.
Calculated metrics
Inspector checklist
- Cylinder liner: 320 mm bore, 480 mm stroke, S/B 1.5 — wear measurement
- Piston rings: Hanshin configuration
- Crosshead bearing: bearing clearance per Hanshin manual
- Camshaft: cam profile and wear
- Fuel pumps: plunger/barrel
- Valve clearance: Hanshin manual
- Injection nozzles: condition
- Stuffing box: drainage
- Exhaust valve: mechanical
- Turbocharger: 1× — no redundancy
- Scavenge air cooler
Logbook reference values
| Parameter | Expected | Deviation means |
|---|---|---|
| Exhaust gas temperature after cylinder | 330-405 °C at 85% MCR | Spread >15 °C → injection problem |
| Scavenge Air Pressure | 1.2-2.0 bar abs at MCR | Turbocharger |
| Engine speed | 180-350 rpm | Load/governor |
Common Failure Modes
Expert tips
- 💡 320 mm Hanshin with S/B 1.5: runs faster than conventional slow-speed engines — also assess maintenance intervals on a cycle basis
- 💡 Hanshin engines on Japanese coastal freighters: often in very good maintenance condition thanks to disciplined Japanese crews
Related components
Classification & regulatory
IMO Tier II. Japanese JG classification.
Reference content for inspector orientation. Always verify against manufacturer's manual, latest service letters and class society requirements.
Other Cylinder Configurations 28
Components & Design
Component data being added…
Technical Data
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