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Safety Handbook for Hydraulic Oil

All oils are not alike. The correct oil will protect moving parts and will not damage seals.

Using the wrong oil will damage your equipment and lead to malfunctions. Use Enerpac premium hydraulic oil.

The most important oil characteristic is viscosity. Heat is also an important factor. See the chart below for details.

Characterisitc Enerpac Specifications


Viscosity 42-45 SUS @ 210⁰F
[5.3-5.4 cSt @100⁰C]
150-165 SUS @ 100⁰F
[30-32 cSt @ 40⁰C]
Viscosity describes the ability of an
oil to flow. If the oil is too thin, there is
not enough lubrication. If the oil is too
thick, it will not flow fast enough to
perform as required.
150⁰F [65⁰C] maximum High temperatures also cause seal
damage. In general, if the system is
too hot to touch, it is too hot to use.

REMEMBER: Always dispose of used oil properly. Observe local ordinances. Do not mix used hydraulic oil with other fluids.


Oil Specifications Chart:

LX Oil HF Oil
ISO Grade 15 32
Viscosity Index 101 min 100 min
Viscosity at 210 °F 3.2/3.7 S.U.S. 42/45 S.U.S.
Viscosity at 100 °F 13.5/16.5 S.U.S 150/165 S.U.S.
Viscosity at 0 °F <2100 S.U.S. <12000 S.U.S.
API Gravity 31.0/35.0 31.0/33.0
Flash, C.O.C. °F 370 375
Pour Point, °F -30 -25
Paraffinic Base Color Yellow Blue

NOTE: SAE grades do not apply to hydraulic oil.

Click the following link to view the entire Safety Seminar Handbook