⚓ Working on this equipment?

Ask the AI troubleshooter, log your hours on board and turn them into invoice-ready service reports — for this exact model.

Start free — 14 days →

No credit card required

🔧 1 verified suppliers & service companies for WinGD in the Maritime Network Find suppliers →

Is WinGD your company? Claim this page

WinGD

5X72

Name: WinGD 5X72
Brand: WinGD
SKU: OSE-38725

The WinGD X72 is a five‑cylinder, low‑speed two‑stroke main engine delivering up to 18.3 MW at 85 rpm, notable for its wide power‑speed range and flexible fuel capability including HFO, VLSFO, LNG, methanol and ammonia variants.

18300.0 kW

Power

Engine Specifications

Cylinders

720 mm

Bore

3086 mm

Stroke

18,300 kW

MCR Power

85.0 rpm

MCR RPM

2-stroke

Stroke Type

Family: WIN-GD X · Tier: IMO Tier II · Fuel: HFO, VLSFO, MDO

Inspector Detail ✓ verified

▸

Designation decoded

5X72 – WinGD X-Serie, vollelektronischer 2-Takt-Kreuzkopfmotor ohne Nockenwelle. 'X' = elektronisch gesteuerte Baureihe. '72' = Bohrung 720 mm / 10. 5 Zylinder. Bohrung 720 mm, Hub 3086 mm.

Background

The X72 is a large slow-speed two-stroke engine, typically installed in container ships, VLCCs and large bulk carriers. With 720 mm bore and 3086 mm stroke, the S/B ratio is 4.29 (ultra-long stroke). Fully electronic control via UNIC with Common Rail injection and hydraulic exhaust valves. FlexCam and Delta Tuning for flexible operating optimization. As a 5-cylinder configuration, special attention required for torsional vibrations.

Calculated metrics

Stroke To Bore Ratio

4.29

Inspector checklist

Logbook reference values

Parameter	Expected	Deviation means
Raildruck	800–1050 bar (lastabhängig)	Deviation: high-pressure pump wear, accumulator leakage or injector problems.
Auslassventil-Leckölmenge	< Herstellergrenzwert	Ansteigende Tendenz zeigt Spindel-/Sitzringverschleiß an.
Zylinderauslass-Temperatur (Spreizung)	Max. ±15 °C vom Mittelwert	High spread: uneven combustion, injector or valve problem.
Cylinder liner wear	0.03–0.10 mm/1000 Bh	Überhöht: CLO-System, Kolbenringe, Brennstoff prüfen.
Spülluftdruck	2.8–3.8 bar at MCR (typical)	Niedrig: Turbolader-Verschmutzung, Ladeluftkühler-Fouling.
Barred Speed Range	Gemäß Gutachten (5-Zyl. kritisch)	Non-compliance: acute danger to crankshaft and drive train.
Hydraulikdruck Auslassventilbetätigung	200–350 bar (systemabhängig)	Low: pump or valve block leakage. High: check valve failure.
UNIC-Systemstatus	Keine aktiven Fehler	Aktive Alarme erfordern sofortige Ursachenanalyse.

Common Failure Modes

Common-Rail-Akkumulator-Leckage

Symptoms: ['Druckabfall zwischen Einspritzungen', 'Erhöhte Pumpenleistung', 'Unrunder Motorlauf']

Causes: Material fatigue at high pressure cycles, Dichtungsverschleiß, Corrosion due to fuel contamination

Preventive: Druckhalteversuche in regelmäßigen Intervallen. Akkumulatoren gemäß Herstellerintervall tauschen. Brennstoffqualität überwachen.

Auslassventil-Heißkorrosion

Symptoms: ['Kompressionsverlust', 'Abgastemperaturanstieg', 'Steigende Leckölmenge']

Causes: Vanadium-/Natrium-Angriff (HFO-Betrieb), Unzureichende Ventilrotation, Überlastbetrieb

Preventive: Check Rotocap function at every opportunity. Inspect Stellite surfacing. Optimize fuel treatment.

Crosshead bearing wear

Symptoms: ['Erhöhte Öltemperatur am betroffenen Lager', 'Metallpartikel im Schmierölfilter', 'Knocking noises at low speeds']

Causes: Mangelhafte Schmierung, Fluchtungsfehler, Overload in seaway

Preventive: Monitor lubricating oil quality and pressure. Measure bearing clearance regularly. Analyze oil filter for particles.

UNIC-FCM failure

Symptoms: ['Zylinder-Cutout', 'Automatische Leistungsbegrenzung', 'Kommunikationsfehler-Alarme']

Causes: Vibration and thermal stress, Alterung elektronischer Bauteile, Feuchtigkeitseintritt

Preventive: Ersatz-FCM an Bord vorhalten. Steckverbindungen regelmäßig prüfen. Umgebungsbedingungen (Temperatur, Feuchtigkeit) im Steuerungsraum überwachen.

Expert tips

💡 W
💡 i
💡 t
💡 h
💡
💡 7
💡 2
💡 0
💡
💡 m
💡 m
💡
💡 b
💡 o
💡 r
💡 e
💡
💡 a
💡 n
💡 d
💡
💡 5
💡
💡 c
💡 y
💡 l
💡 i
💡 n
💡 d
💡 e
💡 r
💡 s
💡 ,
💡
💡 t
💡 h
💡 e
💡
💡 i
💡 n
💡 e
💡 r
💡 t
💡 i
💡 a
💡
💡 f
💡 o
💡 r
💡 c
💡 e
💡 s
💡
💡 a
💡 r
💡 e
💡
💡 s
💡 u
💡 b
💡 s
💡 t
💡 a
💡 n
💡 t
💡 i
💡 a
💡 l
💡
💡 –
💡
💡 t
💡 o
💡 r
💡 s
💡 i
💡 o
💡 n
💡 a
💡 l
💡
💡 v
💡 i
💡 b
💡 r
💡 a
💡 t
💡 i
💡 o
💡 n
💡
💡 d
💡 a
💡 m
💡 p
💡 e
💡 r
💡
💡 i
💡 s
💡
💡 a
💡
💡 s
💡 a
💡 f
💡 e
💡 t
💡 y
💡 -
💡 c
💡 r
💡 i
💡 t
💡 i
💡 c
💡 a
💡 l
💡
💡 c
💡 o
💡 m
💡 p
💡 o
💡 n
💡 e
💡 n
💡 t
💡 .
💡
💡 C
💡 o
💡 m
💡 m
💡 o
💡 n
💡 -
💡 r
💡 a
💡 i
💡 l
💡
💡 s
💡 y
💡 s
💡 t
💡 e
💡 m
💡
💡 o
💡 n
💡
💡 l
💡 a
💡 r
💡 g
💡 e
💡 r
💡
💡 e
💡 n
💡 g
💡 i
💡 n
💡 e
💡 s
💡
💡 w
💡 i
💡 t
💡 h
💡
💡 h
💡 i
💡 g
💡 h
💡 e
💡 r
💡
💡 v
💡 o
💡 l
💡 u
💡 m
💡 e
💡
💡 f
💡 l
💡 o
💡 w
💡 s
💡 :
💡
💡 a
💡 c
💡 c
💡 u
💡 m
💡 u
💡 l
💡 a
💡 t
💡 o
💡 r
💡
💡 p
💡 r
💡 e
💡 s
💡 s
💡 u
💡 r
💡 e
💡
💡 m
💡 a
💡 i
💡 n
💡 t
💡 e
💡 n
💡 a
💡 n
💡 c
💡 e
💡
💡 i
💡 s
💡
💡 a
💡
💡 m
💡 o
💡 r
💡 e
💡
💡 m
💡 e
💡 a
💡 n
💡 i
💡 n
💡 g
💡 f
💡 u
💡 l
💡
💡 t
💡 e
💡 s
💡 t
💡
💡 t
💡 h
💡 a
💡 n
💡
💡 o
💡 v
💡 e
💡 r
💡 a
💡 l
💡 l
💡
💡 p
💡 r
💡 e
💡 s
💡 s
💡 u
💡 r
💡 e
💡
💡 m
💡 o
💡 n
💡 i
💡 t
💡 o
💡 r
💡 i
💡 n
💡 g
💡 .
💡
💡 F
💡 o
💡 r
💡
💡 t
💡 h
💡 e
💡
💡 X
💡 7
💡 2
💡
💡 s
💡 e
💡 r
💡 i
💡 e
💡 s
💡 ,
💡
💡 p
💡 a
💡 y
💡
💡 p
💡 a
💡 r
💡 t
💡 i
💡 c
💡 u
💡 l
💡 a
💡 r
💡
💡 a
💡 t
💡 t
💡 e
💡 n
💡 t
💡 i
💡 o
💡 n
💡
💡 t
💡 o
💡
💡 c
💡 r
💡 o
💡 s
💡 s
💡 h
💡 e
💡 a
💡 d
💡
💡 g
💡 u
💡 i
💡 d
💡 e
💡
💡 s
💡 h
💡 o
💡 e
💡
💡 c
💡 o
💡 n
💡 d
💡 i
💡 t
💡 i
💡 o
💡 n
💡
💡 –
💡
💡 t
💡 h
💡 e
💡
💡 l
💡 o
💡 n
💡 g
💡
💡 s
💡 t
💡 r
💡 o
💡 k
💡 e
💡 s
💡
💡 g
💡 e
💡 n
💡 e
💡 r
💡 a
💡 t
💡 e
💡
💡 h
💡 i
💡 g
💡 h
💡
💡 l
💡 a
💡 t
💡 e
💡 r
💡 a
💡 l
💡
💡 f
💡 o
💡 r
💡 c
💡 e
💡 s
💡 .
💡
💡 D
💡 o
💡 c
💡 u
💡 m
💡 e
💡 n
💡 t
💡
💡 F
💡 l
💡 e
💡 x
💡 C
💡 a
💡 m
💡
💡 s
💡 e
💡 t
💡 t
💡 i
💡 n
💡 g
💡
💡 a
💡 n
💡 d
💡
💡 c
💡 o
💡 m
💡 p
💡 a
💡 r
💡 e
💡
💡 w
💡 i
💡 t
💡 h
💡
💡 a
💡 c
💡 t
💡 u
💡 a
💡 l
💡
💡 o
💡 p
💡 e
💡 r
💡 a
💡 t
💡 i
💡 n
💡 g
💡
💡 p
💡 r
💡 o
💡 f
💡 i
💡 l
💡 e
💡 .

Related components

T u r b o c h a r g e r , c h a r g e a i r c o o l e r , c o m m o n - r a i l h i g h - p r e s s u r e p u m p s a n d a c c u m u l a t o r s , i n j e c t o r s , a l p h a l u b r i c a t o r , c r o s s h e a d g u i d e a n d b e a r i n g , p i s t o n r o d a n d g l a n d , t o r s i o n a l v i b r a t i o n d a m p e r , h y d r a u l i c o i l s y s t e m ( e x h a u s t v a l v e s ) , U N I C F C M m o d u l e s , s h a f t l i n e b e a r i n g

Classification & regulatory

IMO Tier II worldwide. Tier III in ECAs via iCER/SCR. EEXI/CII rating: document power limitation and delta tuning. 5-cylinder torsional vibration certificate per class rules current.

Reference content for inspector orientation. Always verify against manufacturer's manual, latest service letters and class society requirements.

Other Cylinder Configurations 50

Components & Design

Component data being added…

Technical Data

Stroke/Bore Ratio 4.29

MEP X72 Diesel R1 20.5 bar

MEP X72DF Standard R1 17.3 bar

MEP X72DF-1.2 R1 15.7 bar

BSFC X72 Diesel 167 g/kWh at full power (Tier II)

BSFC X72DF-A-1.0 Diesel 168.8 g/kWh at 89 rpm, 8 cyl

Gas Consumption X72DF-A-1.0 Ammonia 368.1 g/kWh at max rating

Power per Cylinder X72DF-2.1 3,225 kW/cyl at 89 rpm

Injection System Common Rail, electronic control

Engine Type Camshaftless 2-stroke, reversible, low-speed

unified from engine model True

🤖 Ask about this model

One free question — answered like a marine engineer. No account needed.

Common failures & inspection points

Fuel Rail Pressure Too High causing violent firing at start; fuel control failure

Verify fuel rail pressure within spec; check power supply and wiring to fuel control

www.manualslib.com/manual/2884144/W...

Injection Nozzle Wear from normal operation causing irregular combustion

Inspect nozzle tips at ~8,000–10,000 operating hours; replace spare kit per schedule

www.manualslib.com/manual/2884144/W...

Lubricating Oil Contamination: water and solids reduce bearing protection; dry sump circulation critical

Verify centrifugal separator bypass operation; monitor oil condition via sampling; check crankcase drain integrity

www.manualslib.com/manual/2034972/W...

Ammonia Combustion Instability (X72DF-A-1.0): low flame speed, high activation energy, misfiring risk, N2O/NH3 emissions

Monitor cylinder pressure diagrams; verify pilot fuel injection timing/quantity; track exhaust temps and emission compliance

wingd.com/media/2gyl3j0v/wingd-ammo...

Scavenge Air Cooler Fouling in dust-laden trades; efficiency loss and thermal stress

Install filtration for dust-prone routes; schedule periodic cooler inspection and cleaning; monitor scavenge air temperature trend

wingd.com/products-solutions/emissi...

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

Suppliers & Spare Parts

Direct links to manufacturer, datasheet, spare-parts portal and dealers — request access below.

📄 Request sourcing links & documents

🛠 Manage this equipment in your fleet

Cases, daily reports, timesheets and AI troubleshooting in the OceanSphere Marine app — free for 14 days.

Start free trial →

🔎 Suppliers & service for this equipment

Find manufacturers, repair shops and spare-part dealers in the Maritime Network — our global company directory.

Maritime Network →

Working on this unit?

Log hours, photos and findings into an invoice-ready service report — OceanSphere Marine, 14-day free trial.

Need a service partner for WinGD?

114,000+ shipyards, suppliers and service companies in the Maritime Network directory.

Equipment Model #38725 · ✓ still in production