Fluids for portable hydraulic power units and tool applications:

The specifications listed below are recommended for the operation of our hydraulic power units. With proper maintenance these fluids will provide good all season operation.

Viscosity:

Maximum

50°F

450 SSU

10°C

95 Centistokes

100°F

130-225 SSU

38°C

27-42 Centistokes

Minimum

140°F

85 SSU

60°C

16.5 Centistokes

Suggested Fluids:

The following fluids are suggested by PortaCo, Inc. for use in our power units.  Other fluids that meet or exceed the specifications of these fluids may also be used.

• AMS-OIL HYDRAULIC FLUID A/W 150-SSU, 100 V.I.
• GULF “HARMONY” AW-HIV-150-32
• SHELL “LO-HYDRAUL” - 32
• UNION “UNAX” AW-WR-32
• TEXACO “RANDO” HD-AZ

• SUN “SUNVIS” 805 MG
• EXXON “UNIVIS” J-26
• CHEVRON AW-MV-32
• LUBRIPLATE HO-32
• MOVIL D.T.E. 13

System requirement for powering hydraulic tools:

Hydraulic tool types are as follows . . .

Type 1
Type 2
Type 3

5
8
12

Guc±10%
Guc±10%
Guc±10%

19 LPM
30 LPM
45 LPM

Hydraulic power units need to be capable of delivering the proper pressure and flow for the tool types listed above when measured across the tool connections.  Flow rates should be no more than ±10% @ 2000 PSI/138 BAR.

The hydraulic system should generate no more than 200 PSI/14 BAR return (back pressure) at the tool when operating at maximum flow for the tool type.  System conditions for this pressure are at maximum hydraulic viscosity of 400 (SSU) at minimum operating temperature.

The hydraulic systems should have sufficient heat rejection capacity to limit maximum oil temperature to 140°F/60°C at the maximum expected ambient temperature. Recommended minimum cooling capacity to dissipate tool-generated heat are:

Type 1
Type 2
Type 3

3 HP
8 HP
7 HP

2.24 KW
3.73 KW
5.22 KW

For determining cooling capacity, the intended duty cycle and the system generated heat must both be considered.

PortaCo’s Power Units have 10 micron filtration and the proper filter element to prevent filter bypass under low temperature start-up.

The power unit requires a hydraulic fluid that thas a viscosity of 150-225 SSU at 100°F/38°C.  Hydraulic fluids of petroleum base with antiwear properties and high viscosity indexes over 140 will meet recommended hydraulic fluid requirements over a wide range of operating temperatures.