What is an electro-hydraulic actuator?

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  • 2018-07-28

What is an electro-hydraulic actuator?
An electro-hydraulic actuator is an actuator that converts a standard input signal (4-20mA, D.C.) through electro-hydraulic conversion, hydraulic amplification, and conversion into a 0 to 90 degree angular displacement output torque or linear displacement output force corresponding to the input signal.

Electrohydraulic actuators have significant advantages over traditional pneumatic and electric actuators, such as large stroke, large thrust or torque, high intelligence, fast response time, high sensitivity, compact structure, and fire resistance.

At present, the main manufacturers of electro-hydraulic actuators at home and abroad include REXA from the United States, Reineke from Germany, KOSO from Japan (assembled domestically), RPMTECH from South Korea, VALMAC from South Korea, DYZT electro-hydraulic actuators from Tianjin Pacific Instrument Co., Ltd., DYJ (Z) from Wuhan Thermal Instrument Factory, Anshan Bayer and Lishui Zhongde Petrochemical Equipment Co., Ltd.