Weibo hydraulic power unit hydraulic oil selection is not appropriate

Hydraulic power unit hydraulic oil viscosity can not reach the appropriate scale, for example, a hydraulic system request in 20-70 degrees Celsius condition, but if the viscosity index is 100 VG46 hydraulic oil, then this oil at 20 degrees Celsius movement viscosity is 134.6cST.

If the hydraulic system of hydraulic power unit is gas-liquid direct touch type accumulator, water and dialcohol cannot be used.

Compared with mineral oil, synthetic difficult fuel oil has high density, water-bearing anti-fuel oil not only has high density and high steam, which will cause greater resistance to oil activity, so in order to avoid pump cavitation and oscillation, it should avoid the use of such oil.

In the small hydraulic equipment used under the condition of large temperature change, if the viscosity change scale is 3 times, the leakage will also be 3 times changed, which will have a greater impact on the small flow of hydraulic system.

So when we choose hydraulic oil, we must pay attention to careful selection according to the working conditions of our own practice, so as to avoid all kinds of damage to the hydraulic system.