Collection: Hydraulics

Hydraulic actuators: power at the service of precision

The hydraulic actuator is the muscle of the autopilot, translating electronic commands into precise rudder movements. At Skysat, drawing on our experience in offshore racing, we know that careful selection and meticulous installation are crucial for optimal performance and unwavering reliability. Explore our selection of premium hydraulic actuators, suitable for all sailboat and powerboat configurations, and benefit from our expertise for seamless system integration.

choosing the right hydraulic actuator

The choice of a hydraulic actuator depends on several factors, including the size of the boat, the required steering torque, the type of existing hydraulic system, and installation constraints. Incorrect sizing can lead to premature wear, excessive energy consumption, and degraded autopilot performance. Here are some things to consider:

• Hydraulic capacity: Determined by the rudder travel and the operating pressure. An undersized actuator will struggle to maintain course in heavy seas.
• Actuator type: Linear, rotary, or integrated into the steering cylinder. The choice depends on the bar configuration and available space.
• Compatibility: Ensure compatibility with the autopilot computer (Raymarine, B&G, Garmin) and the existing hydraulic system (supply voltage, fluid type).
• Stroke and torque: The actuator stroke must correspond to the desired maximum rudder angle. The torque must be sufficient to counteract the forces exerted by the sea and wind.

integration and maintenance

Proper installation is essential to ensure the longevity and performance of the hydraulic actuator. This includes correctly sizing the piping, carefully bleeding the system, and protecting it against corrosion. Regular maintenance, including checking the oil level, inspecting for leaks, and replacing seals, is also crucial.

• Installation: Carefully follow the manufacturer's instructions. Correct alignment of the actuator is crucial to avoid mechanical stress.
• Bleeding: Remove air from the hydraulic system after installation or maintenance. Air can cause vibration, power loss, and sluggish pilot response.
• Maintenance: Regularly check the oil level and for leaks. Replace seals and filters according to the manufacturer's recommendations.
• Protection: Protect the actuator against corrosion and impacts. Use marine-grade fittings and piping.

leading technologies and brands

The hydraulic actuator market is dominated by a few brands renowned for their quality, reliability, and performance. These manufacturers offer solutions tailored to a wide range of boats, from cruising sailboats to luxury yachts. Here are some key technologies and brands:

• Raymarine: Robust linear and rotary actuators, compatible with Evolution computers and SeaTalk NG systems.
• B&G: High-performance actuators, designed for offshore racing and extreme navigation, compatible with H5000 systems and NMEA 2000 networks.
• Garmin: GHP Reactor actuators, incorporating SmartPump technology for optimized power consumption and quiet performance.
• Lecomble & Schmitt: French manufacturer specializing in hydraulic steering systems and custom actuators for professionals.

💡 Skysat's advice

When replacing a hydraulic actuator, take the opportunity to check the condition of the hoses and fittings. A damaged hose or a corroded fitting can compromise the reliability of the entire system and lead to a breakdown at sea.