Precision Hydraulic Steering for Marine Autopilots

The B&G Hydraulic Ram T0 12V Drive is a compact and efficient linear actuator designed to integrate seamlessly with marine autopilot systems. Engineered for vessels with mechanical primary steering, this self-contained unit provides smooth and responsive rudder control while ensuring durability in demanding marine environments.

The unit features an all-in-one sealed system combining a hydraulic cylinder, pump, motor, clutch, and reservoir, making installation straightforward and reducing maintenance requirements. When disengaged, the clutch allows the cylinder to move freely with the primary steering. When engaged, the autopilot controls the bidirectional motor to adjust the rudder position, ensuring precise navigation. Internal relief valves provide added protection against rudder strikes and grounding, enhancing reliability on open waters.

Advanced Technical Specifications

• Voltage: 12 VDC
• Current Draw:60 kg at 25% duty – 1.3A
• Intermittent 350 kg – 14.0A
• Hard-over Time: 12 seconds (nominal)
• Hydraulic Volume: 234cc (average)
• Ingress Protection: IP67-rated, ensuring resistance to water and dust
• EMC Protection: Compliant with BS EN 60945:2002 (DC)
• Ignition Protection: Certified to BS EN 28846:1993 standards
• Operating Temperature Range: -15°C to +55°C
• Max Thrust: 350 kg (intermittent)
• Construction Material: Durable aluminum body

Product Dimensions

• Overall Size: 101 x 728 mm
• Maximum Stroke: 203 mm
• Coupling Radius: 178 mm
• Maximum Torque: 545 Nm
• Weight: 8 kg

Reliable Performance and Fluid Compatibility

• Orientation:Red lead to positive – Extends
• Black lead to positive – Retracts
• Clutch Coil Power: 12W
• Clutch Connection: DIN 43650 (6-8 mm cable)
• Compatible Hydraulic Fluids:ISO VG10 to VG40 hydraulic mineral fluid (ISO 6743-4 HV)
• Suitable commercial fluids include Fuchs Renolin B 15 HV1 and Seastar HA5430

Key Features and Benefits

• Fully integrated hydraulic actuator with clutch, pump, and motor in a sealed, pre-filled unit
• Designed for vessels with back-drivable mechanical primary steering
• Internal relief valves protect against rudder strikes and environmental impacts
• Reliable performance with IP67-rated waterproofing and EMC compliance
• Built for seamless integration with B&G autopilot systems

This hydraulic ram is an essential upgrade for precise and responsive marine autopilot steering, ensuring smoother voyages and enhanced control at sea.