Main Engine 4-Stroke · Main Engines (4-Stroke)
The Niigata L28HX is a medium‑speed, four‑stroke trunk piston main engine delivering up to ~370 kW per cylinder, distinguished by its Miller‑cycle operation and VIVT (variable intake valve timing) for improved fuel efficiency.
Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.
| Cylinder head / valve overhaul | typically every 8,000-12,000 running hours, engine/OEM-schedule dependent |
|---|---|
| Piston and liner inspection | typically every 12,000-16,000 running hours |
| Turbocharger overhaul | typically every 12,000-24,000 running hours, per the engine and TC maker's own schedules |
| Fuel injector service/testing | typically every 2,000-4,000 running hours |
| Lube oil analysis | every 500 running hours or monthly, whichever comes first |
| Crankshaft deflection check | every 2,000-4,000 running hours or whenever the crankcase is opened |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Piston ring end gap (280 mm bore class) | typically 1.0-2.0 mm depending on ring position - confirm against the engine's own manual |
|---|---|
| Cylinder liner diametral wear | commonly considered for renewal around 0.3-0.5% of bore diameter - confirm against the engine maker's own limit |
| Main/big-end bearing clearance | typically 0.15-0.35 mm depending on bearing size - confirm against the maker's table |
| Valve clearance (cold) | typically 0.3-0.6 mm intake/exhaust - confirm against the maker's setting sheet |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Falls under Continuous Machinery Survey or the class periodical survey scheme if enrolled; surveyors typically check the crankcase explosion relief valve condition/test record, governor overspeed trip test, cylinder liner/piston running-hours log, and turbocharger overhaul records against the class-approved intervals.
Estimated lifetime: Medium-speed trunk piston main engines of this class commonly reach on the order of 100,000-140,000 running hours between major overhauls with proper maintenance, heavily dependent on fuel quality, load profile and maintenance regime.
Free of charge — send us your request for Niigata equipment. Our team checks it and replies by e-mail.
Other models of the same equipment type, Niigata first.
Tell us what you need for this Niigata L28HX — a part, a service call, a second opinion. Are you Niigata? Claim this brand page.
Service engineer? Write the day report for this L28HX in OceanSphere Work — photos, hours and parts, as a PDF for the owner. Try it free for 14 days →
Yes. Specifications, documents and service notes for this model are readable without an account. An account adds saved searches and requests, nothing is taken away.
Yes. Tell us the manufacturer, the model and what you need — a person reads every request and replies by e-mail.
Send us the nameplate or the correct value. We check it against the manufacturer datasheet or class-society record and update the page.