Hydraulic ram T0 12 V
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Technical specifications
Technical specifications
| Max power consumption | 168 W |
| Typical power consumption | 15.6 W |
| Operating voltage | 12 VDC |
| Operating temperature | -15 to +55 °C |
| Recommended fuse rating | 15 A |
| Ingress protection | IP67 |
| Mounting type | Below deck |
| Certifications | BS EN 60945:2002 (DC),BS EN 28846:1993,EMC Directive 2014/30/EU,Radio communications (Electromagnetic Compatibility) standard 2017 |
| Displacement | 234 cc |
| Recommended Oil Type | Mineral hydraulic fluid ISO VG10 to VG40 (ISO 6743-4 HV), Fuchs Renolin B 15 HV1, Seastar HA5430 |
| Max thrust | 350 kg (intermittent) |
| Max torque | 545 Nm |
| Drive unit type | Hydraulic linear actuator |
| Hard-over time | 12 seconds (nominal) |
| Strokes | 203 mm |
| Boat displacement | 9000 kg (maximum) |
| Integrated rudder angle sensor | No |
| Steering modes | N/A (depends on autopilot computer) |
| Disengageable | Yes |
| Clutch Cable Diameter Range | 6-8 |
| Clutch Connector Type | DIN 43650 |
| Clutch power consumption | 12 |
| Integrated Components | Cylinder, Pump, Motor, Clutch, Tank |
| Power Consumption Max Current A | 14.0 |
| Power Consumption Typical 12v A | 1.3 |
| Weight | 8 |
| Wiring Polarity Extension | Red positive lead |
| Wiring Polarity Retraction | Black wire to positive |
Detailed description
Detailed description
The B&G Hydraulic Ram T0 12V linear hydraulic actuator is a compact, integrated solution for autopilot systems on sailboats. Designed for vessels with a maximum displacement of 9,000 kg, it integrates the cylinder, pump, motor, clutch, and reservoir into a pre-filled, sealed unit, simplifying installation and maintenance.
Performance and Reliability
This hydraulic ram operates at 12 VDC and delivers a maximum intermittent thrust of 350 kg, generating a maximum rudder torque of 545 Nm. Its hard-over time is 12 seconds nominal, ensuring rapid and precise course corrections. Typical current draw is 1.3 A at 25% duty cycle (for 60 kg), with an intermittent current draw of 14.0 A (for 350 kg).
Integration and Protection
With an average hydraulic volume of 234 cc and a stroke of 203 mm, the actuator is suited for mechanical steering systems that may be back-driven. It is IP67 certified for temporary immersion protection, making it resistant to wet marine environments. EMC protection complies with BS EN 60945:2002 (DC), and ignition protection complies with BS EN 28846:1993. The unit is protected by internal relief valves against rudder shocks or groundings. It is guaranteed to operate within an ambient temperature range of -15 to +55 °C. It requires a control computer such as the B&G AC12 or NAC-2.
Installation and Specifications
The Hydraulic Ram T0 12V allows the autopilot to be used as a backup steering option in case of manual steering failure. Its design enables flexible mounting, facilitating positioning. The recommended hydraulic fluid is mineral ISO VG10 to VG40 (e.g., Fuchs Renolin B 15 HV1 or Seastar HA5430). The integrated clutch has a power rating of 12 watts and connects via a DIN 43650 connector. Its dimensions are 101 x 728 mm and it weighs 8 kg.
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