Octopus Linear Actuators

Octopus Linear Actuators


The Octopus Linear Actuator is a simple, effective way to drive the rudder on a boat equipped with a mechanical steering system.


  • Has Only Five Moving Parts
  • Mechanical Simplicity Gives Product Reliability And Ease Of Service
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Why Buy From Fondriest?


The linear actuator is an assembly of an Octopus reversing pump and a marine hydraulic cylinder. This assembly is mounted on the rudder tiller-arm or quadrant. When the autopilot is not in use the cylinder runs freely along with the rudder. When the automatic pilot is in use a solenoid valve on the actuator closes and locks the cylinder. Steering signals from the pilot are now fed to the D.C. motor, which drives the pump to move the cylinder back and forth. De-energized, the solenoid valve immediately disconnects the automatic pilot from the rudder. The actuator has a small translucent oil reservoir, making it easy to check fluid levels. These actuators have only five moving parts. Mechanical simplicity gives our product reliability and ease of service when compared to complicated gear and screw actuators, making our units a favorite for offshore mariners. These actuators are shipped from our factory completely filled with oil and require no additional plumbing.

Image Part # Product Description Price Stock Order
Octopus Linear Actuators OCTAF1012LAM7 Linear Actuator, 7 Stroke Mounted 38mm Bore, 12V, Up to 45' or 24,200lbs
Usually ships in 1-2 weeks
Octopus 7 Stroke Remote 38mm Bore Linear Drive - 12V - Up To 45' or 24,200lbs OCTAF1012LAR7 Linear Actuator, 7 Stroke Remote 38mm Bore, 12V, Up to 45' or 24,200lbs
In Stock
Octopus 12 Stroke Remote 38mm Linear Drive - 12V - Up To 60' or 33,000lbs OCTAF1212LAR12 Linear Actuator, 12 Stroke Remote 38mm, 12V, Up to 60' or 33,000lbs
Usually ships in 1-2 weeks
Octopus 12 Stroke Mounted 38mm Linear Drive 12V - Up To 60' or 33,000lbs OCTAF1212LAM12 Linear Actuator, 12 Stroke Mounted 38mm, 12V, Up to 60' or 33,000lbs
In Stock
Octopus 12 Stroke Remote 45mm Linear Drive - 12V - Up To 80' or 44,000lbs OCTAF2012LAR12 Linear Actuator, 12 Stroke Remote 45mm, 12V, Up to 80' or 44,000lbs
Usually ships in 1-2 weeks
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