gearboxe assembly

The assembly of a gearbox, which contains a large number of precision-machined parts, must be perfectly mastered and executed by trained and qualified personnel.

Before the actual assembly process, all parts are controlled and stored in our warehouse.

After the validation of a client's order, a technical data card is emitted. This card will follow the gearbox throughout the entire assembly process, to allow for its traceability.

Each fitter will assemble a complete gearbox. His first task will be to fetch the parts from the warehouse and make sure all the components are available, before starting the assembly.

Next, the parts are being cleaned. This is done in a special "washing machine".

Then, the component units can be assembled. See picture below.


Gearbox assembly ending

After this, the assembly of the gearbox itself will begin. The job is executed under strict respect of our quality rules.

Once completed, the gearbox will receive its external pipework: this will establish the hydraulic connections required for operation: ahead clutch / reverse clutch pressure, lubrication of the rotating parts and gearwheels, monitoring equipment for pressure, temperature and other parameters...

Now the transmission is installed on the test bench to undergo a strict testing routine, making sure of good operation under almost-real life operating conditions. For further information, please refer to the "test bench" section.


Having undergone testing with success, the gearbox is cleaned and dried.

It will then receive a specific corrosion protection coating for marine environment.

Finally, the gearbox receives its paint coating according to the client's specification.

gearbox ready to go

Quality control then make a final inspection.

After this last inspection, the QC quality certificate will be delivered, in accordance with the appropriate survey organisation specifications (client's choice).

On Masson-Marine level, the QC certificate will enable us to invoice and to pick up the gearbox for shipping.

Thus, the last operation is the packing of the gearbox.

Propeller assembly

CPP assembly

The assembly of our propellers takes place in the perfectly adapted AMP factory in China. However, they can also be tested, reassembled and inspected at our French site.

The environment of this kind of assembly process is of course absolutely clean and orderly.

CPP are products that require the handling of long, large, and heavy components (such as the propeller shaft, hub, blades, etc.)

Have a question?

Let us call you back...



Europort - November 2017 - Holland
Europort 2017 Masson
We will participate to Europort trade show with our partner ADS Van Stigt. We will be happy to welcome you from November 7th to 10th 2017 - stand n°1310 - Ahoy Exhibition Center, Rotterdam.
Expomar May 25 - 26 - 27 - 28 2017
Masson Expomar 2017
Please come to visit us on Burela Exhibition. We will welcome you with pleasure on our spanish subsidiay's booth S103-104-105!
Masson Marine went with President François Hollande to South East Asia
group picture
Masson Marine was part of the French delegation during the state visit of President François Hollande to South East Asia
Indonesian Masson Success Story
MASSON MARINE contacted Jakarta office for several actions: Meeting programm with Singapore director (...) Read more
HALIEUTIS 2017 - Feb 15-19
Masson Halieutis
Our staff will welcome you with pleasure from Feb.15 to 19th on Halieutis fair in Agadir - Morocco. Do not hesitate to visit our booth, C48-c.
Euromaritime 2017 Paris
Masson Euromaritime 2017
Jan 31st - Feb 02nd We will welcome you with pleasure to Euromaritime event on our booth A18. Do not hesitate to visit us. PARIS - PORTE DE VERSAILLES Hall 3
Inside marine
Clic here to access to a recent article published for masson.
SMM 2016 Hamburg
SMM 2016 Masson
Masson collaborators will have the pleasure to meet you during the fair, from september 6th to 9th. Please don't hesitate to visit us on our booth, - Hall A4-419 - Hamburg Messe Fairground
ISO Renewal
ISO 9001 is renewed for Masson Marine who highly cares about customer satisfaction (...) Click to read more
Masson Marine being promoted by its district. Yonne Développement makes an editorial on its web site. Please have a look at it on the link.
Masson in Indonesian Ministry
Rewarding meeting with the Ministry of Transport in Jakarta: We will take part to a huge project in Indonesia. We are very grateful for their welcoming.
Happy Birthday Masson Marine!
10 Years already... Whole staff is proud to have taken part to Masson Marine's sucess: Many nice & prosperous collaborations realized already and many others still to come!
Asia Pacific Maritime 2016 Singapore
Masson Marine Propulsion will have the pleasure to meet you, on its booth, D-T36, from March 16th to 18th 2016, at "Marina Bay Sands Expo & Conv. Center" - SINGAPORE.
Future Green Vessel
Masson took part at CORICAN successful 1st conference on research and naval innovation within energy transition.
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