ALL THE POWER YOU DEMAND ON THE WATER

Transmissions

Twin Disc engineers more than 100 marine transmission models, from 35 to more than 4000 horsepower.

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QuickShift

Experience the world’s smoothest, fastest shifting—plus amazing slow speed control. QuickShift uses internal clutch actuation to deliver cushioned torque and optimum power in milliseconds, whether you nudge the throttle or go full out.


Standard

Twin Disc has built a worldwide reputation on our ability to design, develop, and manufacture efficient, reliable power transmission systems for a variety of vessels and applications.


Electric & Hybrid

These innovative marine transmissions for serial hybrid and diesel electric propulsion support greener power transmission while delivering the reliability you expect from Twin Disc.


QUICKSHIFT®TRANSMISSION

MGX-5114SC-HD

The perfect propulsion system starts with the technology of Twin Disc’s QuickShift transmissions. This fully integrated system includes the transmission, clutch, valves, actuators and electronic controls resulting in fast, smooth clutch engagement, exceptional boat handling, precise speed control and an incredibly smooth ride.

Standard Equipment
  • Vertical offset, cast iron housing
  • SAE J617 housing no. 1
  • Electric GP-valve with manual override
  • EC600PC profile module – interface for engagement signals
  • Oil strainer and oil filter
Options
  • Flexible coupling for 14” flywheel (SAE J620 size 355)
  • Input flange for freestanding installation
  • Mechanical control valve
  • EC600PC e-troll module and propulsion control system
  • Oil cooler with thermostatic bypass valve
  • Companion flange/ bolts set
  • Monitoring devices to customer’s specification
  • Mounting brackets
  • Live PTO:
    • SAE J744 size 82-2, 16-4 (SAE “A”, 2-bolt, max. 58 Nm)
    • SAE J744 size 101-2, 22-4 (SAE “B”, 2-bolt, max. 209 Nm)
    • SAE J744 size 101-2, 25-4 (SAE “B-B”, 2-bolt, max. 338 Nm)
    • SAE J744 size 127-4, 32-4 (SAE “C”, 4-bolt, max. 592 Nm)
  • Hydraulic clutchable PTO:
    • SAE J744 size 127-4, 32-4 (SAE “C”, 4-bolt, max. 600 Nm)
INPUT RATINGS

KILOWATTS (KW) (HORSEPOWER (HP))*

For service classification definitions and important notes refer to the Twin Disc Marine Product Guide or contact Twin Disc directly.

Reduction Ratios

Pleasure Craft

Light Duty

Intermediate Duty

Medium Duty

Continuous Duty

:1

@ 2300 RPM

@ 2300 RPM

@ 2100 RPM

@ 1800 RPM

@ 1800 RPM

1.02, 1.12
1.50, 1.74, 2.04

673 kW
(902 hp)

629 kW
(843 hp)

504 kW
(676 hp)

394 kW
(528 hp)

358 kW
(480 hp)

2.54

673 kW
(902 hp)

629 kW
(843 hp)

466 kW
(625 hp)

394 kW
(528 hp)

358 kW
(480 hp)

3.00

578 kW
(775 hp)

540 kW
(724 hp)

451 kW
(605 hp)

361 kW
(484 hp)

328 kW
(440 hp)

* Ratings shown for use with standard right hand rotation engines. The maximum allowable rated engine speed is 3000 rpm.

DIMENSIONS & WEIGHT

Specifications subject to change without prior notice in the interest of continual product improvement. Contact your local Twin Disc representative for engineering specifications, Survey Society Approvals and Classifications.

Enlarge

C

190 mm (7.47”)

S

161 mm (6.33”)

F

483 mm (19.00”)

L

279 mm (11.00”)

R

279 mm (11.00”)

Weight

286 kg *

* dry weight, including SAE #1 housing and SAE 355 flexible coupling

Publications:
Installation Drawings:

Drawing Number

Input Connection

Control Valve

Companion Flange

Heat Exchanger

PTO

Download

PX13251

SAE #1 / 14″

mech. + troll. (MG-5114SC-HD)

Yes

Yes

SAE C (live)

DWG

PX13252

SAE #1 / 14″

electric, EC050

Yes

Yes

SAE C (live)

PX13252A

GWB 587.35

electric, EC050

Yes

Yes

SAE C (live)

IGS

PX13252B

Freestanding

electric, EC050

Yes

Yes

SAE C (live)

DWG
STEP
IGS

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