ABB Turbocharger
Spare Parts Supplier
Engine-room turbocharger spare parts supply for A100 · A200 · TPL · VTR Series
ABB turbocharger models covered
The ABB turbocharging programme is not one family but four generations trading at the same time: the axial A100-L and A200-L machines on low-speed two-stroke main engines, the axial TPL series that preceded them and still runs on both two-stroke and four-stroke engines, the mixed-flow TPS machines on smaller medium-speed and high-speed engines, and the earlier VTR and VTC generation that is still in service in large numbers. They share a naming logic and almost nothing else. That is why an ABB request is read series first, frame second.
ABB Turbocharging has traded as the independent company Accelleron since the spin-off completed on 3 October 2022. Accelleron's current range lists the A100-L and A200-L, A100-M, A100-H, TPS-F, MXP and Power2, and the new ACCX300-L for two-stroke engines; TPL-A, TPL-B, TPL-C, TPS-E, VTR and VTC appear under its legacy turbochargers, which it still supports with original parts and service. Nameplates on turbochargers already in service still read ABB, so both names are used on this page.
Axial machines for low-speed two-stroke main engines
The two-stroke line that followed TPL-B. Accelleron dates the A100-L to 2009 and the A200-L to 2013, both as successors to the TPL-B launched in 1999, and its own comparison sets the A175-L beside the A270-L, an A200-L frame. On the A100-L side the frames run A165-L, A170-L, A175-L, A180-L, A185-L and A190-L. A plate reading ACCX300-L is not part of this series: Accelleron declared that next generation for two-stroke engines market-ready in April 2026. Exchange intervals for bearings and rotating parts are read from the machine's own operation manual, not from a brochure.
The axial two-stroke line the A series replaced
TPL-B was designed primarily for large two-stroke marine engines, in five frame sizes — TPL73-B, TPL77-B, TPL80-B, TPL85-B and TPL91-B. It pairs a radial compressor with axial wide-chord turbine blades, runs uncooled casings with no water connections, and uses internal plain bearings lubricated by the engine lube oil. TPL85-B and TPL91-B carry an integrated emergency lube oil system, and on TPL91-B the rotor assembly is designed to come out as a cartridge unit for service work.
Axial machines for four-stroke medium-speed engines
TPL-A covers four-stroke medium to large diesel and gas engines, in frames TPL65, TPL69, TPL73 and TPL77, with variable turbine geometry offered on TPL65-A and a bearing assembly built around a free-floating thrust disc with squeeze oil damping. TPL-C is the later four-stroke machine, in frames TPL67-C, TPL71-C, TPL76-C and TPL79-C; the gas outlet flange is round on TPL67-C and TPL71-C, while TPL76-C and TPL79-C take a rectangular-to-round adapter piece and are supplied only with a suction branch. Casing detail of that kind changes the parts list, so it belongs in the RFQ.
Mixed-flow machines for smaller medium-speed and high-speed engines
The TPS machines carry a mixed-flow turbine with a nozzle ring for constant-pressure and pulse applications, and a radial compressor. TPS-F comes in five frames — TPS44, TPS48, TPS52, TPS57 and TPS61 — on the outline dimensions of TPS-D and TPS-E, and with three compressor stages the maker writes as TPS-F31, TPS-F32 and TPS-F33, so the digits after the F belong in the RFQ. The bearing casing is a single oil- or water-cooled piece with internal plain bearings on a squeeze oil film, fed by the engine lube oil, and gas inlet casings were made with one to four inlets to suit the pulse system. Accelleron now lists TPS-E among its legacy turbochargers.
The four-stroke A series and two-stage arrangements
On the four-stroke side Accelleron lists three A-series machines that the duty letter alone does not tell apart: the A100-M Radial for main and auxiliary medium-speed engines, the A100-M Axial for large medium-speed engines in heavy-duty service, and the A100-H, a mixed-flow machine for high-speed diesel and gas engines. Frames in this family run A130, A135, A140, A145 and the larger A150-M and A155-M. A small-bore auxiliary engine may carry an MXP instead, a turbocharger Accelleron developed with IHI specifically for marine auxiliary engines. Power2 is the two-stage arrangement for large medium-speed diesel, gas and dual-fuel engines, the Power2 800-M among them; on a two-stage installation each stage has to be identified separately.
The earlier generation, still in service
The VTR..4 series was built for two-stroke low-speed and four-stroke medium-speed heavy-duty diesel and gas engines, in frames VTR214, VTR254, VTR304, VTR354, VTR454, VTR564 and VTR714, with P and D executions alongside them. It is a single-stage axial turbine with a radial compressor, and its defining feature is the bearing arrangement: spring-mounted rolling-contact bearings, external, reachable from either end of the rotor, each with its own lubricating and oil-cooling arrangement. Older frames survive as the VTR..0 and VTR..1 series — VTR160, VTR200, VTR250, VTR320, VTR400 and their ..1 counterparts. VTC is the compact companion, in VTC254 and VTC304, and it uses internal plain bearings fed from the engine lube oil system instead; Accelleron lists the VTC as no longer in production but still supported with original parts. Its VTR factsheet calls the VTR the predecessor of the TPL generation, which reached the market in 1996.
Brown Boveri, ABB and the licence builders behind the plate
Anyone looking up an ABB turbocharger is often standing in front of a machine older than the ABB name. The design line runs back to Brown Boveri in Baden, Switzerland, and part of the fleet was built outside Switzerland under licence, so the name on the plate is not always ABB.
The Baden works, before ABB existed
Brown Boveri finished the VT402 at its Baden works in June 1924, and both the maker's own history and independent accounts of marine turbocharging describe it as the first heavy-duty exhaust gas turbocharger. The VTR line was a Brown Boveri development too, which is why an older VTR can carry a BBC plate. ABB itself only came into being in 1988, when Brown Boveri merged with the Swedish group ASEA, and a year later the turbocharger business was set up in Baden as ABB Turbo Systems Ltd — the company name of the years in which TPL and TPS were introduced, before ABB Turbocharging and, from 2022, Accelleron.
Licence production in Japan
Accelleron dates its first licence agreement with IHI of Japan to 1958, and VTR frames built by IHI turn up in the technical literature and on the second-hand market alike. Later on, IHI built units to ABB Turbo Systems designs, and the two sold through a jointly owned company, Turbo Systems United. A plate reading IHI, or IHI together with BBC, in front of a VTR designation marks a licence-built machine of the same series.
Licence production in Korea
In Korea the licence for two-stroke turbochargers dates from 1984 and sits with the engine and machinery division of Hyundai Heavy Industries. For a main engine built in Korea, the works that built the turbocharger is therefore worth naming in the request next to the designation.
ABB turbocharger spare parts supply scope
An ABB machine is quoted across the rotating assembly, the hot gas path, the air path, the bearing and oil arrangement that keeps both alive, and the cleaning and instrumentation fitted around them. A request grouped that way stays readable when one docking covers a two-stroke main engine machine and an auxiliary turbocharger from a different generation on different overhaul records.
- Rotor shaft assemblies, balanced as one unit
- Turbine blades and blade sets, with the damping arrangement where the build has one
- Compressor wheels and impellers matched to the frame and version code
- Inducers and inducer casing parts
- Nozzle rings and guide vane segments
- Diffusers and diffuser rings for the compressor air path
- Air inlet casings and air outlet casings
- Gas inlet casings — axial and radial, single and multiple entry
- Gas outlet casings, outlet elbows and adapter pieces
- Heat-insulating partition walls, heat shields and casing insulation
- Bearing casings, including the single-piece oil-cooled type used on TPS and TPL
- Internal plain bearings — radial bearing bushes and squeeze oil film damper parts
- Free-floating thrust discs and axial location hardware
- Rolling-contact bearings for VTR frames, compressor side and turbine side
- Bearing covers, oil pumps, sight glasses and oil system parts on self-lubricating VTR frames
- Header tank and emergency lube oil system components where the build has one
- Labyrinth seals, shaft seal rings and sealing air arrangements
- Cartridge assemblies on the frames supplied as a cartridge
- Filter-silencers, silencer bodies and suction filter elements
- Suction branches, air intake screens and clamp connection flange hardware
- Turbine and compressor washing devices, washing nozzles and their connections
- Speed sensors and pressure and temperature measuring connections
- Burst protection rings and containment hardware where fitted
- Overhaul and repair kits — gaskets, O-rings, bearings and seal rings
Marine turbocharger — general arrangement
A licensed photograph of ABB turbocharging equipment was not available at publication, so this technical reference illustrates the general arrangement shared by this equipment class.
Illustrative technical reference, not a photograph of ABB or Accelleron equipment or a Vessel Core installed reference — a licensed photo of this maker's equipment was not available. Vessel Core has no dealership, distribution, representation or partnership agreement with ABB or Accelleron; it operates as an independent spare parts supplier.
The plate data that makes an ABB turbocharger line quotable
An ABB machine is identified by series and frame together, and the same frame number recurs across series that share no overhaul item. Rotors are supplied balanced, casings are indexed at the build, and the bearing arrangement changes between series, so the plate and a few photographs usually settle more than a partial number copied from an old requisition.
- Designation exactly as stamped — series letters, frame number and any execution code together, for example TPL77-B, A175-L35, VTR564 or TPS52-F
- Machine serial or manufacturing number from the rating plate
- The engine the machine serves — make, type and engine number, and whether it is the two-stroke main engine or a four-stroke main or auxiliary engine
- The bearing arrangement — external rolling-contact bearings with their own oil pumps, as on VTR frames, or internal plain bearings fed from the engine lube oil system
- Whether the gas casing is water-cooled or uncooled, because the VTR..4 exists in both forms and the casing and connection parts differ
- Direction of rotation, stated with the end it is viewed from
- Casing orientation — the angular position of gas inlet, gas outlet and air outlet as installed, described or photographed rather than measured, since it was set at the build to suit the engine
- The letters and digits after the frame where the plate carries them — the A, B or C on a TPL, the D, E or F on a TPS with the compressor stage digits on a TPS-F, the P or D on a VTR
- Whether the rotor has been overhauled, re-bladed or renewed before, and by whom
- Photographs of the rating plate, of the impeller and diffuser on the air side, and of the nozzle ring and turbine blades on the gas side — the views that separate compressor-side fouling from gas-side fouling
- Running hours since the last overhaul, clearance records, and surge or vibration notes if held
Tools for this equipment: the Pt100 and thermocouple reader for the exhaust gas thermocouples. Where water drains from the charge air cooler after the compressor, the charge air condensate calculator estimates how much condenses from the intake air, the charge air pressure and the cooler outlet temperature. For the engine room the filter-silencer takes its air from, the engine room ventilation calculator works out the supply air by ISO 8861 from the combustion air and the heat emission of the engines, and the capacity of each fan.
When the turbocharger on board is not the one in the engine manual
A turbocharger can change during an engine's life while the engine stays the same. Accelleron and the engine builders both sell performance upgrades, and an upgrade decides which parts list applies from then on, so it has to be known before anything is quoted.
- Component upgrades on TPL machines — Accelleron describes fitting a new compressor wheel and diffuser, an improved turbine and nozzle ring and low-friction bearings to an existing TPL with no change to its external connections, and Wärtsilä offers the same approach on its 46 engines as the TPL 73-A4X upgrade. From outside the machine looks untouched; inside, the rotating and nozzle parts are no longer the original-build items
- Exchange of the whole machine — Wärtsilä lists packages in which a VTR gives way to a modern high-efficiency turbocharger, and others in which the turbocharger is exchanged for a TPL-C instead of being overhauled. Accelleron points out that a full exchange means reworking the interfaces between engine and turbocharger, so casing, adapter and connection parts change along with it
- What to send — the designation as it is stamped now, the upgrade or exchange report where one exists, and a photograph of the plate taken on board rather than a copy from the engine manual
Structured supply route review for ABB turbocharger overhauls.
An ABB line is worked backwards from the machine rather than forwards from the requisition — series first, frame second, execution code and rotation third, then the item. ABB OEM-route options and verified alternative supply paths are reviewed together, with technical identification support where part numbers are not available.
Breakdown lines reviewed first
When the machine is open and the vessel is waiting, surging and fouling symptoms are read back against the air side or the gas side first, so the rotor, nozzle ring, bearing and blading lines need not wait while casing hardware, filter elements and washing device parts are still being priced.
Which ABB lines survive an alternative route
A rotor shaft assembly, a nozzle ring or a blade set going back into a class-surveyed machine normally stays on the OEM route, because the balance record and the drawing revision have to travel with the part. Filter-silencer elements, casing hardware, gaskets, O-rings and seal rings are where a verified alternative is usually worth reviewing on price and availability. Whichever route is offered, the line states the balance grade and rotation hand it was matched against, and where no acceptable alternative exists the line is quoted OEM only and says so.
The series letter is read before the frame number
TPL73 exists as a four-stroke TPL73-A and a two-stroke TPL73-B; VTR320 and VTR321 are the same frame in two different series; A175-L appears with more than one execution code. The series and the code are confirmed back to you before anything is priced. Model designation, serial number and a component description are enough to begin; photographs of the plate or the installed part are also accepted, and a full part number helps but is not always required to start.
Handover reviewed against the docking window
A rotor assembly or a cartridge for a large frame is a balance-sensitive item before it is a freight item — crate dimensions, weight and whether the yard has the lift are checked against vessel ETA, port context and documentation needs before a handover point is written down. Supply route, handover option and freight timing are reviewed against confirmed RFQ details and part availability before quotation, and nothing about the date is treated as settled until it is in the quotation.
Ranges listed here are RFQ context
The ABB series and frame numbers on this page describe the equipment a request may concern; the page prints no outputs or ratings, which are read from the plate. They do not imply holdings, compatibility between frames or series, or any status with the manufacturer.
EU-registered counterparty
A rotor assembly or a nozzle ring for a main engine turbocharger is an order for which most purchasing departments want the counterparty checked before it is raised. Estonian registry 17028043 and VAT EE102773714 are open entries, and the buyer-verification page carries the documents a vetting request usually asks for.
ABB turbocharger parts — common questions
Can Vessel Core review OEM-route and verified alternative routes for ABB turbochargers?
Yes. We review OEM-route and verified alternative routes for ABB marine turbocharger requests across A-series, TPL, TPS and VTR equipment. A rotor assembly, nozzle ring or blade set going back into a class-surveyed machine normally stays on the OEM route, because the balance record and drawing revision have to travel with the part; filter-silencer elements, casing hardware, gaskets, O-rings and seal rings are where an alternative is usually worth reviewing. Alternative routes are evaluated case by case for technical equivalence, documentation and approval context, and where no acceptable alternative exists the line is quoted OEM only and says so.
Which ABB turbocharger models do you cover?
Requests may reference the axial A100-L and A200-L machines for low-speed two-stroke engines, with frames such as A165-L, A170-L, A175-L, A180-L, A185-L and A190-L; the TPL series in its two-stroke form TPL73-B to TPL91-B and its four-stroke forms TPL65 to TPL77 in the A family and TPL67-C to TPL79-C in the C family; the mixed-flow TPS machines from TPS44 to TPS61; the A100-M in its radial and axial forms and the mixed-flow A100-H, frames A130 to A155; MXP machines on small-bore auxiliary engines; Power2 two-stage arrangements; and the earlier VTR and VTC generation, VTR214 to VTR714 in the VTR..4 series and the older VTR..0 and VTR..1 frames. Exact designation, serial number, rating plate data, installed configuration and part evidence are required before a supply route is confirmed.
Can you supply ABB turbocharger parts for time-critical breakdown situations?
Yes. Time-critical ABB turbocharger RFQs are handled with priority supply route review. Critical components, including rotor assemblies, nozzle rings, blade sets, bearings and cartridge assemblies, are checked against supplier availability, documentation needs and freight options, and the rotating-assembly lines are reviewed before casing hardware and filter elements so the open machine is not waiting on the slowest item in the list. Availability, route and handover are confirmed in the quotation rather than before it.
Can you identify ABB turbocharger parts from the nameplate or model designation alone?
Identification can start from them. If part numbers are not available, our technical supply team works from the turbocharger model designation, serial number, and component description or photographs, and the series and the code are confirmed back to you before anything is priced. Read the whole designation rather than the number alone: the frame is a size class, the letters are the series and duty, and any trailing digits are an execution code, so TPL73-A and TPL73-B, or VTR320 and VTR321, are different machines. Nameplate data and drawings from the engine technical file are also accepted as reference.
My plate reads ABB but the documents say Accelleron. Is it the same turbocharger?
Yes. ABB Turbocharging has traded as the independent company Accelleron since the spin-off completed on 3 October 2022, and the A100, A200, TPL and VTR lines carry that name today. Turbochargers already in service still carry ABB nameplates, so a plate reading ABB and a document headed Accelleron can describe the same machine. Send the designation exactly as stamped.
Why do you ask about the bearing arrangement when I order a bearing set?
Because it decides which parts list applies. A VTR runs external rolling-contact bearings with their own lubricating and oil-cooling arrangement, so a VTR overhaul list normally carries bearings, oil pump parts and oil system items. TPL, TPS, VTC and the A series run internal plain bearings fed by the engine lube oil, and those items do not exist on them. A line written as a bearing set is therefore read back against the machine before it is priced.
My VTR plate says BBC or IHI rather than ABB. Is it still an ABB turbocharger?
It belongs to the same design line. The VTR was a Brown Boveri development, ABB was formed when Brown Boveri merged with ASEA in 1988, and IHI in Japan built BBC and ABB designs under a licence that Accelleron dates to 1958. Series letters and frame number are read the same way, so a BBC VTR400 or an IHI-built VTR is identified as described on this page. Send the plate exactly as it reads, builder included, together with the serial number.
Our TPL has had a performance upgrade. Does that change the parts request?
Yes. Accelleron and Wärtsilä both describe TPL upgrades that replace the performance-related parts inside the existing machine — Accelleron lists the compressor wheel and diffuser, the turbine and nozzle ring and the bearings — and both name the upgraded execution separately, as in TPL73-A4X. Parts taken from the original build list may therefore not match what is now inside the machine. State the upgrade in the RFQ and attach the upgrade report or a current photograph of the plate.
What does an ABB turbocharger repair kit contain?
There is no single repair kit across the ABB range: what a kit holds depends on the series, the frame and the job it is meant for. Opening the casings for an inspection mostly calls for gaskets, O-rings and locking parts, a rotor or bearing job adds bearing and seal items, and on a VTR the rolling-contact bearings and oil system parts belong to a different list from the plain-bearing machines. We quote a kit as individual lines against the plate data, so send the designation and serial number together with the kit designation or part number from the spare parts section of the operation manual, if you have it. Vessel Core supplies the parts only; the work itself stays with the crew or the workshop of your choice.
Is Vessel Core connected to ABB?
No, and there is no agreement of any kind. Vessel Core holds no dealership, distribution, representation or partnership agreement with ABB, and quoting a component against one of its designations implies no approval by the maker and no claim of interchangeability.
Why the maker name appears on this page
Maker names help identify equipment and prepare an RFQ. They do not imply any dealership, distribution, representation or partnership agreement between Vessel Core and the manufacturers named on this page; there is none. ABB, ABB Turbocharging and Accelleron, and the A100, A200, TPL, TPS, VTR and VTC designations, are referenced solely so that a buyer can describe the machine on board and the component required.
Send the plate, then the list.
Give the full designation as it reads on the plate — series letters, frame number and any execution code, for example ABB TPL77-B, A175-L or VTR454 — with the machine serial number, the engine the turbocharger serves, the direction of rotation and the components concerned: rotor assembly, casing, nozzle ring, bearings, seals, impeller, diffuser or blading. Add the port and the yard window. The series and the execution code are read back to you before anything is priced, so a line written as "turbine blade" does not come back quoted as one blade when the machine needs a set.
