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Upgrade your boat's autopilot performance with a reliable linear drive unit built for demanding marine environments. This compact hydraulic actuator seamlessly connects autopilot systems to mechanical steering setups like wire, cable, or chain drives, delivering precise control and effortless handling on the water.
Engineered for vessels up to 22,000 lbs displacement, it combines a heavy-duty brass cylinder with a powerful drive unit, ensuring smooth operation even in rough seas. Boaters appreciate its rugged construction that stands up to saltwater exposure and constant use, minimizing downtime and maximizing your time enjoying the helm.
Unlike basic actuators, this unit offers balanced cylinder design for even pressure distribution, reducing wear and extending service life. Its stainless steel braided hoses resist corrosion, while the 12V motor pulls just 3-6 amps on average—perfect for battery-conscious setups without draining power reserves during long passages.
Perfect for sailboats, powerboats, or trawlers where responsive steering enhances safety and comfort, especially during autopilot reliance in open water.
Crafted with marine-grade materials, the 2-inch bore brass cylinder paired with a 1.5 x 9-inch RAM provides a 9-inch stroke and 13.1 cubic inch swept volume. At 500 psi, it delivers 785 lbs of thrust—enough to overpower wave-induced loads on larger hulls.
The solenoid draws only 1.5 amps at 12V, ensuring compatibility with most DC systems. This setup translates to reliable performance across a wide range of boat types, from coastal cruisers to bluewater explorers.
| Feature | Detail |
|---|---|
| Cylinder Bore & Stroke | 2" x 11" |
| RAM Size | 1.5" x 9" |
| Max Thrust | 785 lbs @ 500 psi |
| Rudder Torque | 6280 in. lbs. (±35°) |
| Hard-Over Time | ~13 seconds |
| Motor Voltage | 12VDC |
Integration is straightforward: mount the drive unit securely, connect hoses to the cylinder, and wire to your autopilot's control head. Pre-filled with marine hydraulic fluid, it minimizes air purging hassles. Align the cylinder parallel to the rudder post for optimal leverage, and you're set for plug-and-play operation.
Pro tip: Pair with a helm pump for full hydraulic steering redundancy, boosting reliability on extended voyages. Regular checks on hose connections prevent leaks, keeping your system primed.
Flush the system annually with marine-grade fluid to avoid contamination. Inspect seals quarterly for wear, especially after heavy use. This proactive approach ensures decades of service, far outlasting cheaper alternatives prone to pump failures.
It's designed for boats up to 22,000 lbs displacement, making it great for mid-sized sailboats, powerboats, and trawlers with mechanical steering systems.
With about 13 seconds to full rudder swing, it provides quick response for evasive maneuvers while maintaining stability in autopilot mode.
Yes, it interfaces seamlessly with most hydraulic autopilot systems using standard connections.
The balanced brass cylinder ensures even hydraulic pressure, reducing stress on components and improving overall durability in marine conditions.
Average draw is 3-6 amps during operation, with solenoid at 1.5 amps—efficient for 12V battery banks without excessive drain.
Absolutely, with 785 lbs thrust at 500 psi and corrosion-resistant materials, it's built for offshore reliability.
A 9-inch stroke allows full rudder travel (±35°), providing ample torque for stiff steering gear.
The Accusteer PUMPLA11-12 Linear Actuator is designed to interface an autopilot system with mechanical steering systems such as wire, cable or chain drives. This linear actuator consists of a hydraulic drive unit, steering cylinder, and interconnecting hoses.This unit is also available as the PUMPLA17-12 using a 1.75" x 12" RAM.
PUMPLA11 Specifications:
Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
US$40
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