• Bronze in-line (ASD10B1l)
  • Aluminum-Bronze Drop-center (ASD10B1S)
  • Bronze thrust assembly
  • Bronze (B) or aluminum (C) drop box (drop-center drives only)
  • Internal lube oil reservoir
  • Steering cylinder with external hoses and fittings
  • Trim cylinder with external hoses and fittings
  • Installation manual, owner’s manual and drive ball wrench (one per ship set)


  • Anode Kit
  • Cylinder position indicator kits with gauge
  • Hydraulic power steering system
  • Gearbox adapter
  • Driveline (cardan shaft)
  • Companion (input) flange
  • Tie-bar (mechanical or hydraulic – for multiple engine vessels)
  • Inboard cylinder mounting kit
  • Propeller

Technical Data

Drop Distance 0” 10” 16”

Reduction Ratio /

Maximum Input Torque

1.00:1 /

2000 ft-lbs

1.00:1 /

1500 ft-lbs

Unit Weight 417 lbs C: 560 lbs C: 600 lbs
B: 750 lbs B: 820 lbs
Overall Length 53” 63”
Nominal Shaft Diameter 2.5” 2.5”
Steering Angle 40° 40°
Trim Angle 15° 15°

ASD10 In-Line Surface Drive Schematics

Contact Twin Disc for Drop-Center Drive Schematics

ASD10 Schematics

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.


Description Download
Arneson Surface Drives Military BrochurePDF
Marine Product GuidePDF