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Open system  (1) Open hydraulic system means that the hydraulic oil pump sucks oil from the oil tank, and supplies oil to the hydraulic cylinder (or hydraulic motor) through the reversing valve to drive the working mechanism. The oil return of the hydraulic cylinder (or hydraulic motor) is then r...Read more »

Overview The flow control valve is a valve that relies on changing the fluid resistance of the orifice to control the flow of the orifice under a certain pressure difference, thereby adjusting the movement speed of the actuator (hydraulic cylinder or hydraulic motor). It mainly includes throttle ...Read more »

The displacement range of GRH’s 0 group gear pump is (0.16-2) ml/r, and there are two options for pressure, F(200bar)/G(250bar). The inlet and outlet threads are connected with G thread, metric thread, American thread (NPT), etc., flange and shaft extension size, there are two kinds of rota...Read more »

Aerial work platform (AWP) is a type of special equipment designed and produced to meet the needs of high-altitude operations. It can lift operators, tools, materials, etc. through the work platform to a designated location for various installations , Maintenance operation, and provide safety gua...Read more »

In the time of global fight against COVID-19, Guorui hydraulic(GRH) carried out a system solution of hydraulic components and hydraulic technology,and participated in Bauma 2020, which was held in Shanghai International Exhibition Center in November 2020. It showed the strength of GRH’s des...Read more »

  Causes and solutions for malfunction or insufficient pressure of hydraulic system   Reason 1: The motor wire is connected reversely. Solution: Change the motor wire Reason 2: The motor power is insufficient and the speed is not high enough. Solution: Check the voltage and current Faul...Read more »

GRH HYDRAULIC are very honored to attend the 2018 International Event Bauma exhibition. Independent research and development for power unit and hydraulic cycloid motor, high speed motor, low noise screw pump, tandem pump, and normal products displaying by hydraulic system, attracts many visitors....Read more »

Wuhan Agricultural Machinery Exhibition just come to an end,then GRH team appared on another famous international exhibition-the 23st Asia International Power Transmission and ControlTechnology Exhibition lasting four days from Nov.6. On the stage ofthe New International Expo Center, Guoruihydrau...Read more »

During 2018.10.26-28, GuoRui Hydraulic attended China international agricultural machinery exhibition holding in HubeiWuhan. In this exhibition,GuoRui Hydraulic replying on “HydraulicGear Pump” won 2018 China Agricultural Industry Annual PartsHigh Quality Award. They exhibited hydraulic horsepowe...Read more »

GRH attended the international construction & machinery exhibition in Las Vegas of USA, which held 5 days, andbecome one of the most brightly scenery in China pavilion. Our booth shows: Gear pumps, Motors, Hydraulicdirectional control valves, etc., especially our independent researching and d...Read more »