12 - 1
Hydraulic Fluids
Hydraulic Fluids
The use of proper hydraulic fluid is mandatory to achieve maximum performance and machine life. Use a clean, high quality,
anti-wear hydraulic fluid with a viscosity index (VI) of 135 minimum. It should have a maximum viscosity of 500 cSt (2000 SSU)
at startup (ambient temperature) and a minimum viscosity of 13 cSt (65 SSU) at the maximum fluid temperature (generally 80
°
F
above ambient). Using hydraulic fluids that do not meet these criteria may cause poor operation and/or damage to the hydraulic
components.
The following table specifies the fluid temperature at various viscosities. Temperature rise of the hydraulic fluid can vary from 30
°
F to about 80
°
F over the ambient temperature depending on the pressure setting, age of the pump, wind, etc. Mobil Univis N46
hydraulic fluid is installed at our factory. The advantage of this fluid is a wider temperature range, however, this fluid should not be
used for continuous operation below 24
°
F.
TX03082-04-18-16
NOTE: This chart is based on pump manufacturer recommendations of 13 to 500 cSt.
NOTE: Temperatures shown are fluid temperatures. – NOT ambient temperatures.
Hydraulic Fluids Characteristics
Manufacturer
Fluid Name
cSt
cSt
V.I. -20F -10F
0F
10F
30F
50F
70F
90F
110F
130F
150F
Range
Range
100F
210F
°
F
°
C
Mobil
DTE 10 Excel 15
15.8
4.1 168 ***********************************************
-16 - 113
-27 - 45
DTE 10 Excel 32 32.7 6.6 164 ********************************************* 12 - 154
-11 - 68
DTE 10 Excel 46 45.6 8.5 164 ********************************************* 23-173
-5 - 78
DTE 10 Excel 68 68.4 11.2 156 ******************************************* 37-196
3 - 91
Univis N-32
34.9 6.9 164 ********************************************
12-150
-11 - 66
Univis N-46
46
8.5 163 ******************************************** 24-166
-4 - 74
Univis N-68
73.8 12.1 160 ***************************************** 39-193
4 - 89
