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Octopus 7 Stroke Mounted 38mm Bore Linear Drive – 12V – Up to 45 or 24,200lbs
Eliminating external hydraulic hose plumbing, this Octopus 7-Stroke Mounted autopilot system integrates its 12V pump onto a 38mm cylinder, pushing 770 lbs of peak thrust across a 7-inch stroke on sailing yachts up to 24,200 lbs at 15 lbs.
- Pump-on-cylinder design eliminates external hose routing
- 7-inch stroke delivers 770-lb steering thrust
- Fixed pivot foot bracket secures quadrants
- Operates reliably from -15°C to 60°C
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Description
The Octopus 7-Inch Stroke Mounted 38 mm Bore Linear Drive is a 12V self-contained hydraulic linear actuator for compatible mechanically steered vessels up to 14 m, or 45 ft, and 11,000 kg, or 24,200 lb. Unlike the remote version, this model integrates the reversing pump directly with the 38 mm bore cylinder. The pump-on-cylinder design reduces hose routing and can simplify installation when there is adequate room around the steering quadrant or tiller arm. [308][309]
The actuator provides a 178 mm, or 7-inch, stroke and connects to a compatible tiller arm or steering quadrant through its pivot foot and clevis arrangement. The unit is supplied as a drive only, so it requires a compatible autopilot computer, heading sensor, display or controller, electrical protection, and correctly engineered steering linkage. Its integrated solenoid valve allows the actuator to disengage from automatic steering for manual helm control.
Key Specifications
- 12V integrated hydraulic linear actuator with pump mounted directly on the 38 mm bore cylinder.
- Designed for compatible mechanically steered vessels up to 14 m, or 45 ft, and 11,000 kg, or 24,200 lb.
- Provides a 178 mm, or 7-inch, linear actuator stroke.
- Connects to a compatible steering quadrant or tiller arm through a pivot foot and clevis-pin arrangement.
- Uses a pump-on-cylinder configuration to reduce separate pump mounting and hydraulic hose routing.
- Requires a compatible autopilot computer with suitable continuous and peak motor-output capacity.
- Operates from 12V DC and requires circuit protection sized for the drive’s installed load.
- Includes mounting foot, clevis pin, and hardware; verify the exact package contents against the selected product SKU.
Mounted Drive Layout
The mounted layout places the pump and cylinder at the steering linkage, making it well suited where direct access to the quadrant or tiller arm is available and a compact all-in-one drive installation is preferred. Confirm the space needed for the actuator body, motor, pivot movement, clevis connection, and full 7-inch stroke before selecting this version.
The solenoid valve permits free manual rudder movement when the pilot is not engaged and locks the actuator when automatic steering is active. Mounting geometry must ensure the ram does not bind, bottom out, exceed side-load limits, or prevent full manual rudder travel.
Before Ordering
Confirm a compatible mechanical steering system, vessel displacement up to 24,200 lb, required 7-inch stroke, adequate quadrant or tiller-arm space for an integrated pump-and-cylinder layout, structural mounting strength, compatible 12V course computer, circuit capacity, full rudder travel, manual override, and required control, heading, and feedback components before purchase.
Octopus 7 Stroke Mounted 38mm Bore Linear Drive - 12V - Up to 45 or 24,200lbs
| Drive Type | Integrated Hydraulic Linear Actuator |
|---|---|
| Pump/Ram Capacity | 38mm Bore Mounted Cylinder |
| Flow Rate / Speed | 7-Inch (175mm) Full Stroke Span |
| Max Pressure | 770 lbs (350 kg) Peak Thrust |
| Cylinder Compatibility | Vessels up to 24,200 lbs Displacement |
| Operating Voltage | 12V DC System |
| Peak Current Draw | 19A - 24A Maximum Load |
| Average Power Draw | 3A - 6A Typical Sailing Load |
| Motor Type | Mounted High-Efficiency DC Motor |
| Computer Compatibility | Universal (NAC-2, ACU-200, Reactor) |
| Port Size / Thread | Self-Contained Sealed System |
| Drive Connection | Tiller Arm / Quadrant Pin |
| Rotation/Stroke Direction | Linear Reciprocating Motion |
| Mounting Type | Fixed Pivot Foot Bracket |
| Housing Material | Hard Anodized Alloy & Steel |
| Waterproof Rating | IPX6 Marine Protected Unit |
| Operating Temperature | -15°C to +60°C Extreme Grade |
| Length (Overall) | 450 mm Retracted Chassis |
| Width/Diameter | 110 mm Main Chassis |
| Weight | 6.8 kg (15 lbs) |
| Included Accessories | Mounting Foot, Clevis Pin, Hardware |
| Key Mechanical Feature | Pump-on-cylinder design for simplified plumbing |
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