Hydraulic rising bollards are one of the physical security systems that control the entry / exit of vehicles. Hydraulic bollards are generally produced with hydraulic, pneumatic, electromechanical, semi-automatic or manual triggers. In the mechanical body of the bollards, mostly stainless steel is prefering. In this article, information about the power units of hydraulic bollards will be given. For more information, visit Optima Engineering. The power unit of the hydraulic rising bollards consists of two main elements: hydraulic part and electrical&electronics part. Hydraulic unit includes electric motor, directional valve, hydraulic valve and hydraulic oil. The electric motor in the hydraulic unit is generally AC (Alternating Current) motors. This electric motor is directly triggered by the contactor, which is the switching hyrdaulic cyclinder. This electric motor, which is started with a contactor, is also...
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