Rotors
Rotor assemblies, shafts, turbine and compressor wheels. Components are balanced individually and the rotor again as an assembly, so a new wheel on a sound shaft means a rebalanced rotor, and the balancing record belongs with the part.
Turbochargers
Marine Turbocharger
Marine Turbocharger
Spare Parts Supplier
Engine-room turbocharger spare parts supply for rotors, cartridges, nozzle rings, bearings, compressor wheels and repair kits.
Turbocharger IDMaker, type, serial and engine reference
Technical cross-checkingComponent, drawing, damage photos and overhaul scope
OEM + verified alternativesRoute review by criticality and approval context
Port-aware deliveryTime-critical repair timing, port and ETA coordination
Turbocharger spare parts supplier
Turbocharger RFQs handled around unit type, engine context and repair scope.
Vessel Core supplies marine turbocharger spare parts and repair-kit items connected to main and auxiliary engine maintenance.
The request can start from turbocharger maker/type, engine model, serial number, nameplate photo, overhaul report, drawing position or damaged component photos. Critical rotating and bearing components require careful cross-checking before supply routes are proposed. The turbocharger sourcing guide explains why: a unit is often upgraded in service while the type designation on its plate stays the same, so the serial number carries the revision. MAN builds its own turbochargers, and a MAN B&W two-stroke or a MAN four-stroke often carries a MAN unit rather than a third-party one: the plate reads NA or NR on the earlier axial and radial families and TCA or TCR on the later ones, with a frame size after the letters (the MAN turbocharger page takes each family in turn). That letter group is what decides the part, not the engine model, and the two go on the request together because the same engine type was delivered with more than one turbocharger frame. The letters NA alone do not settle the maker, though: Napier's 7 Series is also designated NA, as in NA297 or NA357, so the maker name from the plate goes on the request with the designation (see the Napier page).
Supply scope
Turbocharger components and repair items we can structure into an RFQ.
Supply coverage for planned overhaul, time-critical repair and engine-related turbocharger spare parts. Turbocharger maker names and series codes identify the unit on board and nothing else: Vessel Core holds no dealership, distribution, representation or partnership agreement with Everllence, formerly MAN Energy Solutions, or with any other turbocharger manufacturer named on this page, and does not present itself as holding one.
Cartridges
The rotor with its bearing casing and seals as one balanced assembly. Say whether the plan is a cartridge exchange or a component-level rebuild, because the two produce different item lists and are quoted differently; exchange or core-return conditions are read line by line, and an exchange unit's condition is stated rather than assumed (see reconditioned in the glossary).
Nozzle rings
Nozzle rings, turbine-side components and related gas-path items. A nozzle ring is matched to the turbocharger frame and to the throat variant chosen when the unit was matched to the engine, which is why two units of the same MAN TCA or TCR frame size can take different rings. Send the ring marking or the overhaul report line with the frame designation, and say whether the turbine is axial, as on the NA and TCA families, or radial, as on NR and TCR: gas-path parts are not shared between the two.
Bearings
Journal and thrust bearings, bearing kits and lubrication-related items. Send the axial and radial clearance readings from the last overhaul report, and say whether the unit runs plain bearings on engine lube oil or rolling-contact bearings with their own oil supply.
Compressor wheels
Compressor wheels, impellers and air-side rotating components.
Casing items
Casing parts, covers, seals, gaskets and interface components.
Repair kits
Turbocharger repair kits and grouped overhaul/service items.
ABB and Accelleron plates
ABB's turbocharging business was spun off as Accelleron on 3 October 2022, so older machines carry ABB plates while current documentation uses the new name. TPL, TPS, A100 and A200 requests go through the ABB page, and the axial VTR..4 frames have a page of their own.
Model index
27 models in this category, filterable.
Start typing a designation, a maker or a part and the rows filter as you go. The full list across every category and maker lives on the maker reference page.
27 models · 21 notes
| Model | Series | Maker | Typical parts |
|---|---|---|---|
| A100-L / A170-L | ABB A-Series Axial | ABB | Axial-flow turbochargers for large two-stroke main engines. Rotor blades, nozzle rings, labyrinth seals, diffuser plates, journal bearings. |
| A175-L / A180-L | ABB A-Series Axial | ABB | High-capacity axial units for large-bore slow-speed engines. Turbine nozzle segments, rotor assemblies, thrust bearings, casing components. |
| A200-L | ABB A-Series Axial | ABB | A200-L RFQs can include compressor wheels, diffuser plates, inlet casing, bearing housings and cartridge assemblies. Confirm the complete rating-plate identity and installed configuration. |
| TPL65 / TPL67 | ABB TPL Series | ABB | Compact axial-turbine turbochargers for medium-bore four-stroke engines. Nozzle rings, bearings, labyrinth seals, turbine inlet casings. |
| TPL73 / TPL77 | ABB TPL Series | ABB | Mid-range TPL units for medium-speed generators and propulsion engines. Rotor blades, compressor wheels, bearing cartridges, diffusers. |
| TPL80 | ABB TPL Series | ABB | TPL80 RFQs can include cartridge assemblies, nozzle ring sets, compressor casing, bearing housings and seal kits. Confirm the exact type and serial evidence. |
| VTR214 / VTR254 | ABB VTR Series | ABB | Compact VTR series for smaller four-stroke engines and auxiliary units. Nozzle rings, rotor blades, bearings, labyrinth seals, end covers. |
| VTR304 / VTR354 / VTR454 | ABB VTR Series | ABB | Mid and large VTR series for medium-speed and low-speed diesels. Turbine nozzle segments, compressor wheels, complete cartridge assemblies, casing sets. |
| Power2 two-stage turbocharging | ABB Power2 | ABB | Two-stage turbocharging components for Power2 systems. Each stage needs exact confirming evidence of what is actually installed: type, serial number, rating-plate data and part designation. |
| TPS44 / TPS48 / TPS52 / TPS57 / TPS61 | ABB TPS Series | ABB | Mixed-flow turbochargers for four-stroke auxiliary engines and diesel generator sets. Cartridge assemblies, nozzle rings, compressor wheels, bearings and seal kits. Confirm the exact type and serial evidence. |
| RH series | IHI RH Series | IHI | The core marine range — RH133, RH143, RH163, RH183, RH203, RH233, RH253 and RH283 — sized across a small, medium and large frame family. Requests typically open with a rotor shaft assembly, nozzle ring or bearing set rather than a single fastener. |
| RH133 / RH143 / RH163 | Frame range | IHI | The smaller-to-medium RH frames, most often requested against auxiliary genset and workboat duty. State the exact frame number as it appears on the nameplate before a rotor or bearing line is quoted. |
| RH183 / RH203 / RH233 / RH253 / RH283 | Frame range | IHI | The larger-frame RH machines, typically overhaul-driven: nozzle ring, turbine blade and bearing casing lines quoted together against one docking window. |
| RHB, RHC and RHE small-frame variants | IHI RH Series — Yanmar duty | IHI | A separate small-frame line built specifically for Yanmar marine diesel engines: RHB31, RHB52, RHC61 and RHE62, for example RHB31GW fitted to the Yanmar 4JH-HTE and RHE62W fitted to the 6LP-STE. Copy the full type suffix exactly as stamped — this line is not interchangeable with the RH133–RH283 frame family. |
| RU series | High-pressure-ratio family | IHI | IHI also lists an RU high-pressure-ratio family (RU110, RU120/122, RU124, RU125). Ratings and dimensions are confirmed against the specific plate before anything is quoted — this page does not carry assumed specifications for the RU line. |
| HPR frames — the earlier radial generation | KBB HPR series | KBB | HPR designations are the family letters plus a size number, for example HPR3000 through HPR6000 — the earlier generation that ST went on to replace at a higher pressure ratio. ST designations may additionally carry a variant suffix. Either way it is the specification number on the plate, not the designation, that defines the build. |
| Legacy R-series | KBB R series | KBB | Older R-series machines are still running on long-lived medium-speed installations, and they use a water-cooled bearing housing, so cooling-side parts belong in the same request. These requests usually need more evidence than those for current frames — plate photographs, a component photograph and the engine type — because the printed spares documentation on board is often the only remaining reference. |
| ST frames — the principal radial family | KBB ST series | KBB | ST-series machines, including the current ST27 and ST27-EP, are KBB's principal radial family on medium-speed auxiliary sets and main engines. Typical items are cartridges, shaft assemblies, plain bearings, sealing bushes, nozzle rings and filter silencer elements. |
| NA series | NA · axial | MAN | The NA units have been in service for decades on two-stroke and four-stroke engines and are still the plate read on many installations. Rotor blades, nozzle rings, labyrinth seals, diffusers, journal and thrust bearings and complete cartridge assemblies are the recurring lines. |
| NR series | NR · radial | MAN | The NR units cover the small and medium frames, and their bearing arrangement was carried forward into the later programme. Nozzle rings, compressor wheels, bearing bushes and thrust rings, seal sets and cartridge assemblies are what an overhaul on these units usually needs. |
| TCA series | TCA · axial | MAN | TCA is the axial-flow programme that followed NA, offered for diesel, dual-fuel and gas engines. Wide-chord turbine blades, nozzle rings, compressor wheels and volutes, bearing housings and seal sets are the usual scope; the type plate on the casing carries the frame size the parts follow. |
| TCR series | TCR · radial | MAN | TCR is the radial programme of the same generation, offered with variable turbine geometry and with turbine cooling as options. Because those options change the turbine end, state whether they are fitted before a nozzle ring, rotor or cartridge is quoted. |
| MET-MA · MET-MB | Axial turbocharger, plus earlier MET-SE | Mitsubishi MET | MET-MB is Mitsubishi's current axial turbocharger family, fitted on MAN B&W, WinGD and J-ENG two-stroke engines; MET-MA is the generation it replaced and MET-SE is earlier again, both still found on plates in service. State which engine platform the turbocharger serves alongside the MET type, since mounting and casing interfaces follow the engine, not the turbocharger type alone. |
| 297 frames | Frame range | Napier | 297-frame requests arrive written as NA297 or simply as “297” copied from a stores list. The 297 and 357 frames belong to the NA 7 Series (NA297, NA307, NA357, NA397); Napier’s NT machines are designated differently (NT1-10, NT1-12, NT1-14, NT2-26, NT2-28), so confirm the full designation as stamped before a rotor, cartridge or nozzle ring line is quoted. |
| 357 frames | Frame range | Napier | Larger-frame 357 requests are typically overhaul-driven: blade sets, nozzle rings, thrust arrangements and casing hardware quoted together against one docking window. |
| NA axial machines | Napier NA 7 Series | Napier | The long-running axial family — NA297, NA307, NA357 and NA397 — found on both propulsion and generator duty. Requests usually open with a rotor assembly, turbine blading, a nozzle ring or a bearing set rather than a single fastener. |
| NT axial machines | Napier NT Series | Napier | A separate, later axial product line (NT1-10, NT1-12, NT1-14), not a continuation of the 7-Series frames. Higher pressure ratios and its own sizing and drawing set — nothing crosses over from an NA machine. Copy the NT designation exactly as stamped, including the size suffix, for example NT1-12. |
Service and identification notes
Wear patterns, duty context and plate-reading advice from the maker pages. They help scope a request; they are not designations.
| Topic | Context | Maker | Detail |
|---|---|---|---|
| Four-stroke, medium-speed duty | Scope note | IHI | The IHI RH-series turbochargers described here serve four-stroke, medium-speed engines on auxiliary gensets, workboats, fishing vessels and tugs. Large, slow-speed two-stroke main engines are a different business, unrelated to the RH-series turbochargers on this page. Diesel United, which licence-builds such engines to WinGD designs, was once part of IHI but has belonged to the Mitsui E&S group since April 2023 as Mitsui E&S DU. |
| NIIGATA-brand HX and AHX engines | Corporate connection | IHI | NIIGATA-brand medium-speed diesel engines — the HX and AHX series used on tugs, offshore support vessels and harbour craft — are built by IHI Power Systems Co., Ltd. (formerly Niigata Power Systems, now part of the IHI Group). A turbocharger request against a NIIGATA nameplate is reviewed with that corporate link in mind. |
| Yanmar marine diesel engines | Engine duty | IHI | Yanmar marine diesel engines are OEM-fitted with IHI RH-series turbochargers across auxiliary and propulsion duty. Provide the Yanmar engine type alongside the turbocharger plate — the same RH frame is built to different specifications for different engine applications. |
| Auxiliary and main engine fits | Engine context | KBB | The same frame size behaves differently on a constant-speed generator set and on a variable-load propulsion engine. Tell us the duty, the fuel in use and the hours since the last overhaul — these change which wear items are worth reviewing together. |
| Bearing bushes and thrust bearing | Rotor support | KBB | Radial bearing bushes run in the bearing casing on engine lube oil, with an axial thrust bearing taking the pressure difference across the rotor. Clearance growth here typically shows up as rising vibration and noise, increased oil throughput, and — once rotor position degrades enough to allow rubbing — loss of charge air pressure. Report rotor axial and radial clearance readings with the RFQ. |
| Cartridge group requests | Assembly level | KBB | A cartridge group carries the rotor, bearing casing, bearing bushes and sealing bushes as one balanced assembly. State in the RFQ whether the vessel plans an exchange overhaul or a component-level rebuild, because the two produce completely different item lists. |
| Casings, nozzle rings and shroud rings | Gas path | KBB | The gas inlet casing carries a turbine nozzle ring that sets the flow geometry into the wheel, with a separate shroud ring protecting the casing itself. Thermal cycling on heavy fuel distorts and cracks these parts, and deposits on the nozzle ring reduce effective turbine area, which drives turbocharger speed and charge air pressure up and shifts exhaust temperatures across the engine. |
| Filter silencer and oil supply | Intake and oil | KBB | The filter silencer element is the simplest part on the machine to renew and the one most often left too long; a blocked mat raises exhaust temperatures across every cylinder. Oil inlet fittings, restrictors and screens belong in the same RFQ, because bearing life follows oil condition. |
| Nozzle ring and diffuser variants | Matching-critical | KBB | Turbine nozzle rings and compressor-side diffusers exist in more than one variant per frame, and the specification number is what separates them. A part that bolts up correctly can still shift the matching of the engine, so the matching reference from the technical file belongs in the RFQ next to the designation. |
| One-piece turbine wheel | Turbine side | KBB | Exhaust gas enters the wheel radially at its periphery through the gas inlet casing and nozzle ring, turns, and discharges axially through the exducer at the wheel eye. The wheel is a single nickel-alloy casting joined to the shaft, so a bent or eroded blade is not an individual blade order — it moves the request to a shaft assembly or a cartridge. |
| Radial compressor wheel | Compressor side | KBB | The aluminium compressor wheel is a life-limited item on many KBB installations, counted in running hours rather than replaced on condition. Bore and back-face fatigue, plus foreign-object damage from debris drawn through a tired filter silencer, are the usual reasons a wheel comes off before its hour limit. |
| Sealing bushes at both ends | Sealing | KBB | Sealing bushes separate the oil space from the gas and air sides. When they wear, oil migrates towards the compressor casing or into the exhaust — oily charge air, deposits in the cooler, or a smoking uptake are the symptoms an engineer reports before the parts list is written. |
| The turbocharger has its own plate | Unit identity | MAN | On an engine of any real size the turbocharger is a separate assembly with a type designation and a serial of its own, and the engine identity alone does not reach the parts. Read the unit plate, and note whether the request is for a cartridge exchange or for loose components, because the two are quoted differently. |
| Blading and nozzle ring | Gas side | Napier | Heavy fuel ash and unburnt residue build up on the turbine blades and on the nozzle ring vanes, then erode them. Thermal cycling adds cracking at the vane trailing edges and root fillets. Blades sit in machined roots with locking hardware, so damaged blading is normally treated as a set, not as a single replacement blade. |
| Complete cartridge requests | Assembly level | Napier | A cartridge line covers the balanced rotor with its bearing housing and seals as one package. Exchange or core-return conditions attached to that route are read line by line during review. |
| Compressor wheel and diffuser | Air side | Napier | Oil mist, salt and dust glaze the compressor wheel and the diffuser passages, blunting the blading and pushing the machine toward surging. Tip rub after a bearing problem leaves witness marks on the shroud line. Wheel and diffuser are matched to the frame build, so both are usually reviewed together. |
| Filter silencer and casing hardware | Intake and casings | Napier | A loaded filter silencer starves the machine of air and drags efficiency down before anything mechanical fails. On the hot side, gas-inlet and gas-outlet casings suffer distortion, gasket-face erosion and stud damage over repeated overhauls, and casing hardware is worth listing in the same RFQ as the rotating parts. |
| Journal and thrust bearings, seals | Rotor support | Napier | Plain journal bearings and the thrust arrangement depend on clean, uninterrupted oil. Contamination, a short oil interruption on shutdown or a blocked supply line shows up as bearing wear, rising vibration and then rotor contact. Worn labyrinth seals let oil migrate toward the gas path or exhaust gas into the bearing space. |
| Medium-speed auxiliary sets | Engine duty | Napier | Auxiliary and propulsion four-stroke installations. Provide the engine make and type alongside the turbocharger plate — the same frame is built to different specifications for different engine applications. |
| Multi-engine gensets and propulsion sets | Engine duty | Napier | Where several medium-speed engines in one machinery space carry the same frame, state whether the RFQ covers one machine or the full set, and whether the units carry different build or rotation records after earlier renewals. |
| Older and out-of-production frames | Legacy frames | Napier | Machines no longer in current production are reviewed against the evidence the vessel actually holds: plate photographs, old overhaul reports and clearance records rather than assumed catalogue continuity. |
Nothing matches. Send the designation from the nameplate — we also quote items that are not listed here.
This list indicates coverage. It is not stock on hand and not a claim of affiliation with any manufacturer.
In the field
A main-engine turbocharger, in place and running.
Representative licensed photography, not a Vessel Core installed reference or completed job. No manufacturer is identified in this photograph. Photo: Eduard47, Wikimedia Commons, CC BY-SA 4.0.
What to send
Send enough context to identify the turbocharger unit and repair scope.
Nameplates, engine references, overhaul reports, photos and drawing positions help structure turbocharger RFQs when the exact part number is not available. The turbocharger carries its own plate, separate from the engine's, so photograph both; if the turbocharger plate is lost or unreadable, the engine plate and the unit's position (main or auxiliary engine, and which of several) narrow the frame for confirmation against drawings. The RFQ evidence checklist lets you tick off what you already hold, the glossary shows why one misread character in a type code changes the part, and the supply route advisor takes one line through criticality, approval requirements and schedule before OEM or a verified alternative is chosen.
Vessel and timing
- Vessel name / IMO
- Company name
- Urgency level
- Port / ETA
Equipment reference
- Maker
- Model
- Serial number
- Equipment application
Part request
- Part number
- Description
- Quantity
- OEM / alternative / both
Attachments
- Photos
- Nameplate
- Drawing
- Excel list
Related categories
Connect this RFQ to the wider engine-room supply scope.
Turbocharger RFQ FAQ
Short answers for technical buyers.
Can you quote turbocharger parts without a part number?
Yes. Send maker, type, serial number, engine reference, nameplate photo, overhaul report, drawing position or damaged part photos.
Can you handle time-critical turbocharger repair RFQs?
Yes. Include vessel / IMO, port, ETA and repair status so the supply route and handover option can be reviewed. Availability and lead time are confirmed only in the quotation.
Can Vessel Core review ABB-related turbocharger RFQs?
Yes. Use the general turbocharger page for mixed requests or the dedicated ABB turbocharger parts page for ABB-specific RFQs.
Send turbocharger RFQ
Need turbocharger components or repair-kit items?
Send turbocharger maker/type, serial number, engine model, component reference, quantity and port/ETA. Photos, reports, drawings or Excel lists are welcome.
