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Niigata

Niigata 6L25HX

Niigata HX Series Medium-Speed Diesel — Marinediesel, Bohrung 260 x Hub 350 (6L26HLX/6MG26HLX); 275 (12V26HX) mm, 720-750 (6-cylinder models); 900 (12V26HX) rpm, 1100-1320 (6-cylinder models); 2400+ (12-cylinder). Brennstoff: Marine diesel, Bunker A/C, range from No.2 Diesel to heavy fuel oils up to 700 mm²/s at 50°C. Status: 26HLX exists (current models MG26-HLX-6); 26HX plain designation does not exist in current HX lineup. Note: 6L26HX is listed as discontinued.. Verifiziert, Datenblatt verlinkt.

Per Hersteller-Datenblatt
Capacity
MDO/HFO
Medium

Engine Specifications

6
Cylinders
250 mm
Bore
4-stroke
Stroke Type

Components & Design

Component data being added…

Technical Data

Configuration Vertical inline 4-cycle direct injection diesel
Compression ratio 13.0
Max combustion pressure 14.71 MPa (26HLX); 20 MPa peak (HLX design)
Brake mean effective pressure 2.5 MPa (design target for HLX)
Cooling system Fresh-water or sea-water cooled
Lubrication Dry or wet sump options
Starting system Air over piston

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Common failures & inspection points

Lubricating oil selection critical - oil suitable for residual fuel may not work with light fuel; proper selection based on sulfur content required
www.niigata-power.com/english/produ...
Maintenance at 25,000-hour intervals includes main bearing cap overhaul and crankshaft journal inspection
www.manualslib.com/manual/3335884/I...
General diesel engine failure factors include poor maintenance, overheating, lubrication issues, and component wear; early detection through monitoring helps pr
bartechpropulsion.com/support-range...

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

Service & Maintenance

Scheduled service includes fuel valve testing, cylinder head inspection and turbocharger cleaning.

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Replacement Parts

Recommended: injectors, exhaust valves, filters, gasket kits and turbocharger parts.

Manuals

Equipment Model #36837 · discontinued