OceanSphereENGINES
Library› Engine Room› Auxiliary Engines› Auxiliary Engine (Generator Set)› MaK (Caterpillar) 8LM20C-GS-60Hz

8LM20C-GS-60Hz

Auxiliary Engine (Generator Set) · Auxiliary Engines

Class-certified type (DNV register) · technical data sheet not yet verified​‌⁠‍‍‌​​​‌‌‌‌​‌‌⁠‌‍‍
1,520 kWPower
8Cylinders
200 mmBore
300 mmStroke

This engine is commonly found in large commercial vessels operating in international waters, where it powers essential systems like generators and propulsion units. The MaK 8LM20C-GS-60Hz engine is designed to run on Heavy Fuel Oil (HFO) and Marine Diesel Oil (MDO), providing a reliable power output of 1520 kW at 900 rpm. With a bore and stroke of 200 mm and 300 mm respectively, the engine features a 4-stroke configuration and is part of the M20C-GS family. It generates a genset power of 1444 kW and a genset kVA of 1805, ensuring stable operation at 60 Hz. The engine's specific fuel oil consumption ranges from 186 to 190 grams per kilowatt-hour, and it incorporates a high-performance turbocharger system that maintains optimal performance. Regular maintenance is critical to prevent issues such as charge air cooler fouling, turbocharger erosion, crankshaft bearing wear, fuel injection system leakage, and camshaft bearing damage.

Specifications

Technical data.reference — unverified

Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.

Bore/Stroke ratio200/300 mm (ratio 1:1.5)
BMEP (Brake Mean Effective Pressure)24.1 bar @ 900 rpm, 24.2 bar @ 1000 rpm
SFOC (Specific Fuel Oil Consumption)186-190 g/kWh @ 100%/85% MCR
Specific oil consumption0.6 g/kWh (tolerance ±0.3 g/kWh)
Swept volume per cylinder9.4 liters
Power per cylinder170-190 kW
Mean piston speed9-10 m/s @ 900/1000 rpm
Turbocharger systemKBB HPR4000/5000, high-performance, non-water-cooled casing with high charge air delivery
Charge air coolerRedesigned for M20C, integrated with cooling system
Fuel injection systemDirect injection, high-pressure common rail capable
Cylinder linerAnti-wear ring design, piston removal interval 30,000 hours under HFO operation
Genset frequency stabilityFrequency drop <5% in 4-load step system (testbed confirmed)
Power (kW)1520
Speed (rpm)900
Fuel TypeHFO/MDO
ConfigurationL
Genset Output (kW)1444
Genset Output (kVA)1805
Frequency (Hz)60
Need this part?

Request a quote for this model.

Free of charge — send us your request for MaK (Caterpillar) equipment. Our team checks it and replies by e-mail.

For marine equipment hardly any maker or authorised dealer will name a price while the vessel is unknown. With the vessel details, availability and price can be settled faster; without them we may have to ask first, which costs a few days. If you are not allowed to name the vessel, a photo of the rating plate is enough — attach it below or send it as a reply to our confirmation e-mail.

Your contact details are not published. No account required.
Related models

Also in Auxiliary Engine (Generator Set).

Other models of the same equipment type, MaK (Caterpillar) first.

By manufacturer CaterpillarMAN Energy SolutionsWärtsiläVolvo PentaScaniaMaK (Caterpillar)CumminsDeerePerkinsDaihatsuHanshinMTUYanmarBaudouinDeutzAll manufacturersSpare parts by equipmentNew here? Create a free account Can't read the plate? Try the nameplate scanner All MaK (Caterpillar) models More like 8LM20C-GS-60Hz
More than the data sheet shows

We answer by e-mail, never with an automatic reply.

Tell us what you need for this MaK (Caterpillar) 8LM20C-GS-60Hz — a part, a service call, a second opinion. Are you MaK (Caterpillar)? Claim this brand page.

Service engineer? Write the day report for this 8LM20C-GS-60Hz in OceanSphere Work — photos, hours and parts, as a PDF for the owner. Try it free for 14 days →

Frequently asked

Questions that come up with this equipment.

Is this model's data free?

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.

Can you find a part for this exact model?

Yes. Tell us the manufacturer, the model and what you need — a person reads every request and replies by e-mail.

The specifications look wrong — what now?

Send us the nameplate or the correct value. We check it against the manufacturer datasheet or class-society record and update the page.