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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.

MGX-5321DC

  • Select Product
  • Down Angle
    • MGX-5065A
    • MGX-5075A
    • MGX-5086A
    • MGX-5096A
    • MGX-5126A
    • MGX-5136A
    • MGX-5146A
    • MGX-6599A
    • MGX-6620A
  • Vertical Offset
    • MGX-5065SC
    • MGX-5075SC
    • MGX-5086SC
    • MGX-5114SC
    • MGX-5114SC-HD
    • MGX-5114DC
    • MGX-5136SC
    • MGX-5146SC
    • MGX-516
    • MGX-5170DC
    • MGX-5202SC
    • MGX-5204SC
    • MGX-5222DC
    • MGX-5225DC
    • MGX-5321DC
    • MGX-5600
    • MGX-6598DC
    • MGX-6599SC
    • MGX-6620SC
    • MGX-6690SC
    • MGX-61000SC
    • MGX-61500SC
    • MGX-6848SC
    • MGX-6848SC
    • MGX-5600DR
  • V-Drive
    • MGX-5114RV
    • MGX-5136RV
    • MGX-5146RV
    • MGX-6599RV
    • MGX-6620RV
    • MGX-5136RV
  • Horizontal Offset
    • MGX-61500SC-HL/HR

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.

Select Product

  • Select Product
  • Down Angle
    • MG-5005A
    • MG-5025A
    • MG-5055A
    • MG5050A
    • MG5061A
    • MG5065A
    • MG5075A
    • MG5082A
    • MG6449A
    • MG6984A
    • MG61242A
  • Vertical Offset
    • MG340
    • MG360
    • MG5012SC
    • MG5020SC
    • MG5050SC
    • MG5061SC
    • MG5065SC
    • MG5075SC
    • MG5082SC
    • MG5091SC
    • MG5091DC
    • MG540
    • MG5506
    • MG6600DC
    • MG6984SC
    • MG61242SC
    • MGN1814V
    • MGN1816V
    • MGN1817V
    • MGN1819V
  • V-Drive
    • MG5050RV
    • MG6449RV
    • MG6984RV
    • MG61242RV

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.

Select Product

  • Select Product
  • MGE-5065SC
  • MGE-5126SC
  • MGE-5204SC
  • MGX-5321DC Hybrid Ready

MGX-5321DC

STANDARD EQUIPMENT

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

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
(1400 hp)

882 kW
(1183 hp)

982 kW
(1317 hp)

5.96

1044 kW
(1400 hp)

1163 kW
(1560 hp)

865 kW
(1600 hp)

969 kW
(1300 hp)

861 kW
(1155 hp)

969 kW
(1300 hp)

6.39

893 kW
(1198 hp)

1022 kW
(1371 hp)

776 kW
(1041 hp)

863 kW
(1137 hp)

737 kW
(1137 hp)

812 kW
(1098 hp)

For service classification definitions and important notes refer to the Twin Disc Marine Product Guide or contact Twin Disc directly. Ratings shown for use with standard right-hand rotation engines. The maximum allowable rated engine speed is 2400 rpm.

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
• Mechanical control valve
• 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
• Mounting brackets
• Live PTO
SAE J744 size 127-2/4, 32-4 (SAE “C”, 2/4-bolt) – max. 592 Nm
SAE J744 size 127-2/4, 38-4 (SAE “C-C”, 2/4-bolt) – max. 1187 Nm
• Hydraulic clutchable pump mount PTO
SAE J744 size 127-2/4, 32-4 (SAE “C”, 2/4-bolt) – max. 592 Nm
SAE J744 size 127-2/4, 38-4 (SAE “C-C”, 2/4-bolt) – max. 1186 Nm
• Dry weight including SAE no. 0 housing and SAE 460 flexible coupling: 1754 kg

EC600PC ELECTRONIC PROPULSION CONTROL SYSTEM

Optional equipment: display and joystick

DIAGRAM
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C

440 mm (17.32″)

S

426 mm (16.79″)

F

758 mm (29.82″)

L

440 mm (17.32″)

R

R 440 mm (17.32″)

PUBLICATIONS
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