These press fi t self-lubricating bushings are manufactured from high
quality self lubricated aluminum bronze material and are ideally suited for
running with commercial and precision posts.
Self-lubricating bushings contain graphite plugs which are impregnated
with oil. When the bushings reach 80-90°F as a result of friction between
the bushing and guide post, oil is drawn from the plug thus lubricating the
wear surface. A dark smear pattern is created on the wear surface as the
oil and graphite are imbedded into the bronze or steel grain. This provides
the lubrication necessary for continuous performance of the tool.
