Turbocharger · Turbochargers
The NA357M is a high‑capacity axial‑flow turbocharger built by Napier (Wabtec) for two‑stroke slow‑speed marine diesel engines up to about 25 MW, delivering strong boost pressure while keeping exhaust back‑pressure low.
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| major_overhaul | 30000 to 40000 hours |
|---|---|
| bearing_replacement | 15000 to 20000 hours |
| seal_replacement | 10000 to 15000 hours |
| compressor_blade_cleaning | 5000 to 10000 hours |
| compressor_blades | 10% to 15% of original blade height |
|---|---|
| turbine_blades | 5% to 10% of original blade height |
| bearing_clearance | 0.1 to 0.2 mm |
| shaft_seal_clearance | 0.05 to 0.1 mm |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Class surveyor typically checks turbocharger performance, vibration levels, and bearing temperatures, as well as inspecting for signs of wear or damage on critical components
Estimated lifetime: 40000 to 60000 hours
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