QUICKSHIFT®TRANSMISSION

MGX-6598DC

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, aluminum housing
  • Electric GP-valve with manual override
  • EC600PC profile module – interface for engagement signals
  • Integral oil cooler for raw water cooling
  • Oil strainer and oil filter
Options
  • SAE J617 housing no. 1
  • SAE J617 housing no. 0
  • Flexible coupling for 14” flywheel (SAE J620 size 355)
  • Flexible coupling for 18” flywheel (SAE J620 size 460)
  • Input flange for freestanding installation
  • EC600PC profile module – interface for engagement signals
  • Output shaft driven trailing pump
  • Companion flange/ bolts set
  • Monitoring devices to customer’s specification
  • Mounting brackets
  • Live PTO
    • SAE J744 size 127-4, 32-4 (SAE “C”, 4-bolt) – max. 600 Nm
  • Hydraulic Clutchable PTO
    • SAE J744 size 127-4, 32-4 (SAE “C”, 4-bolt) – max. 600 Nm
  • Secondary live PTO for power steering pumps
    • SAE J744 size 101-2, 22-4 (SAE “B”, 2-bolt) – max. 75 Nm or
    • SAE J744 size 82-2, 16-4 (SAE “A”, 2-bolt) – max. 75 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

2.46, 3.03

1462 kW
(1961 hp)

1278 kW
(1714 hp)

1000 kW
(1341 hp)

824 kW
(1105 hp)

771 kW
(1034 hp)

3.48

1462 kW
(1961 hp)

1241 kW
(1664 hp)

945 kW
(1267 hp)

779 kW
(1045 hp)

729 kW
(978 hp)

3.93

1343 kW
(1801 hp)

1131 kW
(1517 hp)

861 kW
(1155 hp)

710 kW
(952 hp)

664 kW
(890 hp)

4.43

1172 kW
(1572 hp)

1055 kW
(1415 hp)

804 kW
(1078 hp)

662 kW
(888 hp)

619 kW
(830 hp)

* Ratings shown for use with standard right hand rotation engines. The maximum allowable rated engine speed is 2500 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

310.0 mm (12.20”)

S

275.0 mm (10.83”)

F

602.5 mm (23.72”)

L

360.0 mm (14.17”)

R

360.0 mm (14.17”)

Weight

580 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

Notes

Download

P72402

SAE #0 / 14″

electric, EC050

740434B

Freestanding

electric, EC050

Yes

mounting brackets trailing pump

740434C

SAE #0 / 18″

electric, EC300 interface

Yes

SAE C (live)

IGS

740434F

SAE #0 / 18″

electric, EC300 interface

Yes

SAE C (live)

STEP
IGS

740992

SAE #0 / 18″

electric, EC300 interface

Yes

SAE C (live)

SLDPRT

740992A

SAE #0 / 18″

electric, EC300 interface

Yes

SAE B (live)

SLDPRT

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