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Accu Steer LA100D Hydraulic Linear Actuator Drive

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Product Description

Accu-Steer LA100D Heavy-Duty Hydraulic Linear Actuator unit is a hydraulic linear actuator designed to interface an autopilot system with a mechanical steering systems such as wire, cable or chain drives. Accu-Steer LA100D hydraulic linear actuator consists of a hydraulic drive unit.

Accu-Steer LA100D is a complete linear actuator drive unit only.

One end of the cylinder is fixed and the other end is connected to a tiller arm or the mechanical quadrant, which is connected to a rudder shaft. With this connection to a tiller arm the linear movement of the cylinder is changed to rotary movement, which turns the rudder and steers the vessel.

During normal mechanical steering, the hydraulic steering cylinder strokes to port and starboard as the vessel is steered manually. The oil in both sides of the cylinder flows back and forth through a normally open bypass valve located in the linear actuator drive unit. The steering cylinder is connected to the drive assembly with two hoses (port and starboard).

When the autopilot is switched into the operating mode, the bypass valve is electrically closed. The autopilot then drives the reversing hydraulic pump which in turn operates the steering cylinder. When the autopilot is operating, the cylinder with be turning the rudder. The mechanical steering will be back-driven during this time. The vessel’s steering wheel will be turning as the autopilot makes corrections.

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