• The main reasons for the impossibility of lifting the movable arm belt

    A. Be heavily worn of hydraulic pumps. The pump leakage is serious at low speed. At high speed, the pump pressure is slightly increased. Due to pump wear and internal leakage, the

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  • The reasons of fault of hydraulic pump

    During maintenance of hydraulic pump, the fault causes are found from the following three points.(1) Checking the inner leakage of movable arm oil cylinder. The simplest way is to raise

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  • The selection of coupling

    The hydraulic pump transmission shaft cannot bear the radial force and the axial force, so it is not allowed to install the belt wheel, gear and sprocket directly at the shaft end. The coupling i

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  • The installation of hydraulic oil tank

    According to the different installation position, it can be divided into upper type, side type and lower type.  The hydraulic pump and other devices are installed on the upper cover plate wi

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  • The selection of hydraulic oil tank

    The main function of the hydraulic oil tank in the hydraulic system is to store oil, heat dissipate, separate the air contained in the oil and eliminate foam.Firstly, the capacity of oil tank should b

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