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    Choice of hydraulic oil
    Public date:2015-1-21   Hits:17889

    Choice of hydraulic oil

    1)Hydraulic system and choose to work full hydraulic steering system hydraulic pressure (force) should be based on oil:

    ①Ambient temperature is high, should be used in high viscosity hydraulic pressure (force) of oil, on the contrary, the selection of low viscosity hydraulic pressure (force) of oil, winter and summer, oil should be used in different grades。
    ②High pressure hydraulic system should be used in high viscosity hydraulic oil, because of its high pressure, large leak; on the contrary, the selection of low viscosity hydraulic oil。
    ③System flow rate is high, choose low-viscosity hydraulic oil, because of its high flow rate, pressure loss severe; on the contrary, the selection of high-viscosity hydraulic oil。
    ※The company uses the L-HM46 anti-wear hydraulic oil。

    2)Choice of hydraulic transmission gearbox oil supply system - torque converter:
    Because the torque converter - the flow rate faster gearbox oil system, the operating temperature is high, it should be used in the hydraulic system oil than the work of a good performance hydraulic oil, especially in the choice of anti-oxidation, anti-emulsification, anti-wear, force requires a strong anti-corrosion, low viscosity, good chemical stability of 22 #, 30 # turbine oil (ie, turbine oil), or a 6, # 8, # 10 hydraulic transmission oil, and their performance in the following table:

    Brand name

    At 50 ℃
    Kinematic viscosity
    (CSt)

    At 100 ℃
    Kinematic viscosity (CSt)

    Solidifying point

    Not more than

    Flash point (open)

    Not less than

    Mechanical impurities%
    Not more than

    Acid value
    Mg KOH / g is not greater than

    20~23
    28~32

     

    4.2
    7.5~9

    9~12

    -15
    -10
    -25
    -25
    -50
    -30

    180
    180
    180
    150

    150

    No
    No
    No
    No

    No

    0.02
    0.02

     

    2.5

    ※ Pour point oil, hydraulic transmission 8 # -50 ℃ for cold regions. Generally recommended 6 # hydraulic transmission oil。

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