MAN turbocharger series
MAN NA/S · NA/T9.
Axial turbochargers for MAN B&W two-stroke main engines and large four-stroke engines. MAN presented the TCA as their successor in 2002; many NA units are still in service.
- Turbine
- Axial-flowPressure ratio up to 4.5
- Engine output
- 3,600–24,500 kWper turbocharger, approx.
- Engines
- Two-strokeMC and MC-C; also L58/64
- Status
- In serviceSucceeded by the TCA in 2002
Types we support
MAN NA/S · NA/T9 sizes.
Click on a turbocharger type to ask about it. Not listed? Ask us anyway.
| Type | Max. speedrpm | Weightkg | Enginestypical pairings |
|---|---|---|---|
| NA29/S | 31,300 | 1,050 | – |
| NA34/S | 26,300 | 1,350 | S26MC, L35MC, S35MC, L42MC |
| NA40/S | 22,400 | 2,200 | L35MC, S35MC, L42MC, S42MC, S46MC-C, L50MC |
| NA48/S | 18,600 | 3,700 | 7L58/64 |
| NA57/T9 | 15,000 | 5,100 | 6L60MC, 7L70MC-C, 7S60MC-C |
| NA70/T9 | 12,000 | 9,800 | 6S70MC, 7S60MC-C |
Max. speed and weight per size, for reference: the permitted speed of each unit is on its nameplate. Brand names are used for identification only.
How it's built
Inside the NA.
- Axial-flow turbine
- Plain bearings inside the casing on engine oil; bearing life over 25,000 hours
- One-piece compressor wheel milled from high-strength aluminium alloy
- Water-free casings on the NA/S; water-cooled bearing casings on the NA57/T9 and NA70/T9
- Pressure ratio up to 4.5 (NA/S), 4.2 (NA57/T9) and 4.0 (NA70/T9); gas inlet temperature up to 650 °C
What we do for the MAN NA/S · NA/T9
- InspectionsWe assess the condition of the unit and its components, and tell you what needs attention and what can wait.
- OverhaulsPlanned overhauls with OEM parts, with a clear record of the work.
- TroubleshootingLoss of performance, vibration, high temperatures: we help find the cause and the right fix.
- Spare partsOEM spare parts, supplied through the Engine Partners Group.
We don't attend on board ourselves; for work on board we arrange partners we trust.
Engine parts too.
Our engine parts team, Engine Partners, supplies OEM spare parts for the engines these turbochargers run on.
Request a quote
Ask the specialists.
Send us the type and serial number from the nameplate, preferably with a photo. You'll have our answer within a working day.
- Phone
- +31 181 650 040
- ShipServ
- Turbo Partners · ID 241045
- Address
- Ohmweg 22, 3208 KE Spijkenisse
Rotterdam area, the Netherlands