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Lubrication - Hydraulic Fluids
Edward Brunet, Jr., P.E.
Overview
The primary purpose of a hydraulic fluid is to transmit
power mechanically throughout a hydraulic power system. However, hydraulic
fluids are also required to provide lubrication of contact surfaces within
system components, sealing of equipment with tight clearances and removal of
heat generated within the system. The hydraulic fluid must also protect
system components against rust, oxidation and corrosion. In selecting a
hydraulic fluid for an application, consideration must be given to the pressure,
temperature and materials of the system An improperly selected hydraulic
fluid can lead to inadequate system performance and premature failure of
components, as well as the potential for fire or environmental impact in the
event of loss of containment.
In this course, the student will study the basics of
hydraulic fluid selection. The course will cover Chapter 4, "Hydraulic
Fluids" in
the US Army Corps of Engineers document EM 1110-2-1424, "Lubricants and Hydraulic
Fluids".
The student must take a multiple-choice quiz consisting of
ten questions at the end of
this course to obtain PDH credits.
Specific Knowledge or Skill Attained
This course teaches the following specific knowledge and
skills:
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Purpose and functions of hydraulic fluids
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Physical characteristics of hydraulic fluids, including
viscosity, compressibility and stability
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Causes and effects of oxidation, rust, corrosion, air
entrapment, foaming, emulsification and excessive wear and the additives used
for mitigation of these conditions
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Types of hydraulic fluids, including petroleum-based,
water-glycol, oil-in-water, water-in-oil and synthetic fire-resistant and
their typical applications.
Course
Click on the following PDF attachment and review Chapter 4, "Hydraulic
Fluids" from the US Army Corps of Engineers document EM 1110-2-1424,
"Lubricants and Hydraulic Fluids" prior to taking a quiz for credit.
"Hydraulic
Fluids" (47 KB)
Having Trouble Downloading the PDF File?
Right click on the link. Select "Save Target As..."
Then save on your desktop. To view the file, double click the icon on your
desktop and return to this page to take the quiz.
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Click on the link below to download a free copy of Acrobat Reader.
To obtain PDH credits for this course, you will need to take a quiz for
credit. Click on the link below.
(To take the quiz,
your web browser must be set to accept cookies. See how to
check your cookie settings.)
 
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Related Books
Applied Tribology : Bearing Design and
Lubrication
Lubrication and Reliability Handbook
Lubrication for Industry
Lubricants in Operation
Tribology Data Handbook: An Excellent Friction, Lubrication, and Wear
Resource
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