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Marine Transmissions

Electric & Hybrid (MGE & MGH) Transmissions

Full Electric/Serial Hybrid (MGE)

Full Electric/Serial Hybrid

MGE-5065SC

Duty

Ratio :1 to 2.43

Pleasure

up to 425 kW (570 hp) @2500RPM

Light

up to 376 kW (504 hp) @2300RPM

Medium

up to 227 kW (304 hp) @1800RPM

Continuous

up to 216 kW (290 hp) @1800RPM

MGE-5126SC

Duty

Ratio :1 to 3.00

Pleasure

up to 673 kW (902 hp) @2300RPM

Light

up to 629 kW (843 hp) @2300RPM

Medium

up to 394 kW (528 hp) @1800RPM

Continuous

up to 358 kW (480 hp) @1800RPM

MGE-5204SC

Duty

Ratio :1 to 3.48

Pleasure

up to 1104 kW (1450 hp) @2300RPM

Light

up to 979 kW (1122 hp) @2300RPM

Medium

up to 716 kW (805 hp) @1800RPM

Continuous

up to 716 kW (805 hp) @1800RPM

Hybrid-Ready Marine Transmission

MGE-5065SC

Twin Disc has taken its field-proven marine transmissions and created the MGE Series of gearboxes. This design provides power from the motor immediately in both clockwise and counter-clockwise directions. All units are equipped with a bi-directional oil pump to provide lubrication no matter the direction of input rotation, making these units a perfect fit for serial hybrid and diesel-electric applications or any application requiring a direct power response with a ratio reduction.

Features & Benefits

• Vertical offset, lightweight aluminum alloy housing
• Bi-directional lubrication pump
• Simplified design without a clutch
• Same installation envelope as standard marine transmission
• Same ratios as MGX-5065SC
• Metric design (except for some power transmitting and
plumbing components)
• Marine survey society type approvals and unit certification
available upon request

Standard Equipment

• Input flange for freestanding installation
• Oil filter and oil strainer mounted

Input Ratings

Reduction Rations :1

Pleasure Craft
@2500 RPM

Light Duty
@2300 RPM

Intermediate Duty @2100 RPM

Medium Duty @1800 RPM

Continuous Duty @1800 RPM

1.08, 1.26, 1.47 1.72,
2.04

425 kW
(570 hp)

376 kW
(504 hp)

279 kW
(374 hp)

227 kW
(304 hp)

216 kW
(290 hp)

2.43

400 kW
(536 hp)

351 kW
(471 hp)

254 kW
(341 hp)

208 kW
(279 hp)

199 kW
(267 hp)

For service classification definitions and important notes refer to the Twin Disc Marine Product Guide or contact Twin Disc directly. The maximum allowable rated engine/motor speed is 3600 rpm.

Optional Equipment

• Companion flange/bolts set
• Mounted heat exchanger
• Mounting brackets
• Monitoring devices to customer’s specification

Basic Dimensions & Weight
Enlarge

C

152 mm (6.00 in)

S

133 mm (5.22 in)

F

394 mm (15.51 in)

L

254 mm (10.00 in)

R

165 mm (6.50 in)

weight*

87 kg

* Estimated dry weight with GWB 587.20 input hub.

Publications

Parallel Hybrid

MGH-5321DC Hybrid Ready

Standard Equipment

Hybrid Ready with MC-75 and PTI Gearbox

MAXIMUM 982 KW (1317 HP)
@ 1800 RPM (CONTINUOUS DUTY)

• Vertical offset, nodular iron housing
• Electric GP-valve with manual override
• EC600PC profile module – interface for engagement signals
• Mounted oil cooler for raw water cooling
• Oil strainer and oil filter

Hybrid-Ready Features

• MC-75 MasterClutch
• PTI gearbox

Masterclutch

• Permits power generation through PTO/PTI in forward, neutral and reverse
• Prevents engine back-driving during electric-only operation
• Supports all features of QuickShift transmission

Input Ratings

Reduction Ratios :1

Intermediate Duty

Intermediate Duty

Medium Duty

Medium Duty

Continuous Duty

Continuous Duty

@ 1800 RPM

@ 2100 RPM

@ 1600 RPM

@ 1800 RPM

@ 1600 RPM

@ 1800 RPM

3.35, 4.06, 4.42
4.96, 5.46

1044 kW
(1400 hp)

1163 kW (1560 hp)

928 kW
(1244 hp)

1044 kW (1400hp)

882 kW (1183 hp)

982 kW (1317 hp)

5.96

1044 kW
(1400 hp)

1163 kW (1560 hp)

865 kW
(1160 hp)

969 kW (1300 hp)

861 kW (1155hp)

969 kW (1300 hp)

6.39

893 kW
(1198 hp)

1022 kW (1371 hp)

776 kW (1041 hp)

863 kW (1137 hp)

737 kW (988 hp)

812 kW (1098 hp)

EC600PC Electronic Propulsion Control System

Optional Equipment: display and joystick

PTI Gearbox

• Drives transmission primary shaft (same as engine) with MasterClutch providing disconnect
• Allows for standard speed/smaller e-motor through motor speed reduction
• Offset to propeller shaft enables installation of large motors
• Reductions from 1.0:1 to 2.5:1
• Integrated sea water (optional) pump cools transmission during electric propulsion
• PTO available for onboard hydraulics (e.g., steering pump)
• Limited to 1,186 Nm on MGH-5321DC input shaft

Optional Equipment

• SAE J617 housing no. 0
• SAE J617 housing no. 00
• Flexible coupling for 18″ flywheel (SAE J620 size 460)
• Flexible coupling for 21″ flywheel (SAE J620 size 530)
• Input hub for freestanding installation
• EC600PC e-troll module and propulsion control system
• Oil cooler for fresh water cooling
• Companion flange/bolts set
• Special companion flange/bolts set for shaft brake application
• Monitoring devices to customer’s specification

Diagram
Enlarge

C

440 mm (17.32″)

C2

163 mm (6.45″)

S

426 mm (16.77″)

F

1068 mm (42.06″)

L

440 mm (17.32″)

R

440 mm (17.32″)

Weight

2298 kg (5062 lbs)

Publications
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