Description

Twin Disc MG-5091SC 2.95:1 Gearbox

OPTIONS Twin Disc MG-5091SC

MG-5091SC MG-5091DC
SAE J617 housing no. 1 X X
SAE J617 housing no. 2 X X
Flexible coupling for 14” flywheel (SAE J620 size 355) X X
Flexible coupling for 11.5” flywheel (SAE J620 size 290) X X
Input flange for freestanding installation X X

Electric control valve (12 VDC or 24 VDC) X X
Mechanical trolling valve X X
Oil filter mounted X X
Oil cooler with thermostatic bypass valve X X
Companion flange/bolts set X X
Monitoring devices to customer’s specification X X
Mounting brackets X X
Live PTO – max. 593 Nm:
SAE J744 size 127-4, 32-4 (SAE “C”, 4-bolt) X X
Hydraulic clutchable PTO – max. 415 Nm
SAE J744 size 127-4, 32-4 (SAE “C”, 4-bolt) X X
Shaft with key X X

For commercial vessel operators, boatyard technicians, and marine mechanics, accurate knowledge of the specifications and identification details for the Twin Disc MG-5091SC Marine Gear is critical to ensure proper installation, maintenance, repair, and replacement of parts. This marine gearbox has powered some of the most durable workboats and service vessels in the industry. Whether you’re troubleshooting performance issues, ordering overhaul kits, or ensuring alignment compatibility, knowing the complete specifications and how to correctly identify your unit is essential for uptime and performance.