The use of thickeners in gear
lubricants is not common: hence, little
space need be devoted to the subject. Where lubricating greases
are used in gear sets,
soap is normally
the thickener and hence will
be present. In gear
housings which are not
tight, grease will stay in
place better than will
oil. Later some specific applications
will be mentioned where
lubricating greases are employed, and
in such cases
the type of thickener
present will be evident.
Resins, both natural and
synthetic, are occasionally recommended as thickeners in gear lubricants. Thus,
resins separated from Pennsylvania residua are so used. Likewise, certain grades of
polyethylene are thought
to have not only
thickening power but
also to contribute
film strength to
lubricants.
Inorganic solids, which were
previously mentioned as being
used in gear oils
because of their EP
characteristics, have some
thickening power but
are normally used
in such low proportions that bodying
is not evident. However, fine silica
is a component of
some semi fluid lubricating greases used
in gear cases
which are not tight and thus would show
abnormal leakage with
fluids.
It is helpful blog. We used gear oils for our vehicle. But many people does not know about the quality of oils. Today lots of oils are in the market but some of that are not good in quality. It harms engine.
Lubrication Equipment