28
|
March - April 2018
|
www
.
machinerylubrication.com
Many different types of greases
are used successfully in these applica-
tions. e specific grease employed is
not as important as the frequency of
the greasing, which can help to keep
dust out of the races and prevent
rapid wear rates. Since conveyors are
often outside and open to all weather
conditions, it is not uncommon to
choose a water-resistant grease to
inhibit water ingress.
Greasing Frequency
In these applications, greasing is
seldom performed frequently enough
because of the distances between the
bearings and the height at which they
are located above the ground. A lack
of labor availability can add to this
problem. e use of greasing systems
in which a centrally located reservoir
feeds numerous points through
piping may be considered. However,
the pipe runs could potentially be
quite long, requiring a number of
these types of systems.
e other alternative would be
a single-point grease lubricator that
attaches directly to each bearing.
ese lubricators can be set to expel
grease over variable amounts of time
to suit the application and bearing
size. They can also significantly
reduce the amount of labor required
to individually grease the bearings as
well as help to alleviate the ingress of
contaminants by applying constant
pressure on the bearing.
Of course, the total cost of
utilizing these types of lubrica-
tors throughout a plant must be
weighed against the amount of
labor involved. In addition, keep
A cement crusher gear
A cement kiln
LUBRICATION PROGRAMS
