Electrohydraulic steering gears of RAM type
The steering gears of ram type are installed aboard ships of various classes and purposes.
High technologies and considerable experience accumulated in design and manufacture of steering gears make possible their reliable and economic operation.
Our steering gears are easily interfaced with advanced control systems of home and foreign make.
Alarm and warning signal system ensures long-term maintenance-free continuous operation without local control.
The steering gears meet all requirements of Russian and foreign classification societies.
The steering gear service life is not less than 25 years.
|Basic technical data|
|Parameter||Type of steering gear|
|Rated torque at rudder stock developed by the steering gear at rated working pressure, k•Nm||250||630||1000||2000||2500||630|
|Rated working pressure in cylinders, MPa||16||13|
|Maximum working angle when shifting rudder from mid-position to either side||35°±1|
|Time of shifting rudder from 35° on one side to 30° on the other side at full speed with one power unit in operation, s, not more||28|
|Diameter of tiller bore to receive the rudder stock, mm||290
|Rating of driving motor of power unit, kW||15||37||45||55||75||22|
|Current frequency, Hz||50|
|Ship’s mains voltage, V||380|
|Steering gear mass as delivered, t||4,5||8,8||13,1||23,6||31,7||12,3|
|Overall dimensions of actuator, mm:|
|- L (length)||3350||4380||5090||5300||6430||3700|
|- В (breadth)||2060||2620||2950||3410||3930||2400|
|- Н (height)||1380||1560||1560||1200||2080||1460|
Note. * three power units of equal capacity, two of them are – main, one is – a standby one.
The steering gear actuator includes power drive; two power units either of equal capacity, each ensuring specification characteristics of the steering gear; remote electrical control system; control and signalling switchboards (sound, light and alarm); starting equipment; rudder indicator; filling-and-draining unit of hydraulic system.
The control system provides "Automatic", "Follow-up" and "Non-follow-up" control modes.
At customer’s request, the supplier provides starting and adjusting works, training attending personnel as well as after-sale servicing of steering gears in operation and supply of necessary spare parts.