Twin Input Single Output Gearbox

As the arrangement of the machine room can be challenging, we designed a gearbox with two front inputs. This gives the great opportunity to choose two smaller engines instead of one, while giving more flexibility regarding the operating modes.

Over the years, the concept has been improved and thanks to a recent redesign of the housing, this gearbox can now be fitted with our standards Power Take Off (See example on the picture above with PTO Type 1 on the left side of the gearbox and PTO Type 2 on the right side of the gearbox).

MM W2800Y with PTO Type 0, PTO Type 1 and PTO Type 2

                                                                                                                              
ModelkW/RPM per input
(hp/RPM)		Maximum
Rated power per Input kW (hp)		Maximum RPMRatioSample Ratio Capacities kW(hp)Dry Weight kg (lb)
1500 rpm1800 rpm2100 rpm
MM W2800Y0,371 (0,498)779 (1045)21003,527556 (746)668 (896)779 (1045)2600 (5733)
3,903
0,316 (0,424) 664 (890) 4,130 474 (636) 569 (763) 664 (890)
4,138
0,293 (0,393) 615 (825) 4,571 439 (589) 527 (707) 615 (825)
4,579
0,267 (0,358) 561 (752) 4,757 401 (537) 481 (645) 561 (752)
5,264
0,233 (0,312) 489 (656) 5,602 349 (469) 419 (562) 489 (656)
6,199
0,255 (0,302) 473 (634) 6,353 338 (453) 405 (543) 473 (634)
7,031
0,184 (0,247) 386 (518) 7,284 276 (370) 331 (444) 386 (518)
8,060

* For the Non Reversible version please contact Masson Marine with your detailed requirement for corresponding performances

2021 : Redesign

Twin input/single output gearbox can now be fitted with Power Take Off

  • 3 models available : Type 0, Type 1 and Type 2
  • Live or clutchable output(s)
  • Up to 2 x 4 outputs
  • Several ratios available
  • Max power : 220 kW / output

Description

  • Robust design and easy onboard maintenance.
  • Robust design also withstands continuous duty in workboat,dredger applications.
  • Fully works tested, reliable and simple to install.
  • Reverse reduction marine transmission with hydraulically actuated multi-disc clutches.
  • Case hardened and precisely ground gear teeth for long life and smooth running.
  • Robust cast iron casing for direct or remote mounting.
  • Emergency “get home” capability.
  • Design, manufacture and quality control standards comply with ISO.
  • Suitable for twin installation with 100% rated power in ahead and astern condition.

Standard Equipment

  • Oil cooler complete with fittings and flexible hoses.
  • Integrated Brackets.
  • Free Standing.
  • Lube Oil Pump

Option

  • Engine-matched torsional coupling
  • Propeller shaft flange and coupling bolt set.
  • Classification by all major Classification Societies on request.
  • PTO (live or clutchable).
  • Electric trolling valve for slow-speed drive.
  • Shaft brake.
  • Electric clutch control.
Download Technical Data Sheet Twin Input Single Output Gearbox (PDF)

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