MAN B&W S50MC-C S50MC L50MC Piston Crown
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Engine Series:Â Two-stroke, low-speed marine diesel engines (MC/MC-C types) with crosshead design for propulsion in large vessels.
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Bore Size:Â 500 mm nominal bore, optimized for high combustion efficiency and power output.
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Stroke Length:Â Approximately 2,000 mm (S50MC/S50MC-C), with L50MC variant offering longer stroke for improved efficiency.
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Cylinder Configurations:Â Inline 6S50MC-C to 12S50MC-C; adaptable to S50MC and L50MC for various power ratings up to 12,000 kW.
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Power Output:Â 7,500-8,500 kW per engine (depending on cylinder count and rpm: 127-140 rpm).
MAN B&W L28/32H Piston Crown Skirt
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Engine series: MAN B&W L28/32H four-stroke, medium-speed GenSet diesel engine for marine propulsion and auxiliary power.​
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Bore size: 280 mm nominal (optimized for precise piston fit and combustion efficiency).​
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Stroke length: 320 mm, supporting speeds up to 720/750 rpm and piston speeds of ~10 m/s.​
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Cylinder configurations: Inline 5L28/32H to 9L28/32H variants for GenSet applications.​
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Power output: Up to 220 kW per cylinder (max total 1,980 kW for 9-cylinder model).​
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Material & construction: High-strength aluminum alloy or coated skirt with crown interface for thermal expansion control.​
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Part number reference: OEM codes like 51306-xx series (exact PN varies by piston mark/version; e.g., Mahle/KS equivalents for 5L-9L28/32H).
MAN B&W L28-32H Cylinder Liner
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Engine Series: MAN B&W L28/32H four-stroke, medium-speed GenSet diesel engine for marine propulsion and auxiliary power.​
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Bore Size: 280 mm nominal (new: 280.03-280.08 mm; max wear limit: 280.60 mm).
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Stroke Length: 320 mm, supporting 720/750 rpm speeds and piston speeds up to 10 m/s.​
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Cylinder Configurations: Inline 5L28/32H to 9L28/32H; V-versions with collar groove for orientation.​
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Power Output: Up to 220 kW per cylinder (total up to 1,980 kW for 9-cylinder).​
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Material & Construction: Fine-grained pearlite cast iron, centrifugally cast with water jacket, O-rings, and flame ring for sealing.​
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Part Number Reference: OEM codes like 51201-08 (liner), 51306-14/0
MAK M20 Cylinder Liner | OEM Replacement for 6M20, 8M20, 9M20 Engines
| Detail | Specification |
|---|---|
| Part Name | Cylinder Liner |
| Engine Make | MaK (Caterpillar Marine Power Systems) |
| Engine Model | M20 / M20C |
| Compatible Engine Types | MAK 6M20, MAK 8M20, MAK 9M20 |
| Engine Design | 4-Stroke, Inline, Long-Stroke Marine Diesel |
| Year Introduced | 1990s |
| Condition | New / OEM-Grade Replacement |
Wartsila W26 Cylinder Liner
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Engine Series: Wärtsilä 26 (4-stroke, medium-speed diesel engines for marine propulsion and power generation)​
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Bore Size: 260 mm nominal cylinder bore (precisely machined for optimal piston fit and compression)​
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Stroke Length:Â 320 mm, enabling piston speeds of 9.6-10.7 m/s at 900-1000 rpm
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Cylinder Configurations:Â Inline variants (6L26, 8L26, 9L26) and V-configurations (12V26, 16V26); power per cylinder 910 kW at 1000 rpm
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Part Number Reference:Â Common OEM codes like 1050-001, 262601302ZT122, or 100325 equivalents for spares
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Material & Construction: High-strength centrifugally cast grey iron with flanged top, tangential cooling bores, and integrated anti-polishing ring​
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Wear Limits & Maintenance:Â Ovality max 0.25 mm; inspect at 12,000-24,000 hours; compatible with modular block for quick replacement
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Fuel & Compliance: Optimized for HFO (730 cSt/50°C), MDO; SFOC 186-192 g/kWh; meets IMO NOx Tier II standards
