Dodge USN 600 Series Manuale di istruzioni - Pagina 7
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LONG-TERM STORAGE OF
PRE-ASSEMBLED BEARINGS
Oil Lubrication (Adapter Mount or Direct Mount)
USN bearings are specifically designed to handle either grease
or oil lubrication. Oil lubrication is normally required at high
speeds as well as high loads or whenever heat from an external
source is flowing into the bearing. Oil lubrication may be static
or circulating. With static oil, fill the bearing cavity with oil up to
the centerline of the lower roller. The dimension is identified as
"w" and is shown on Table 12. Mount an oil sight gauge in the
drilled and tapped drain hole on the side of the plummer block for
visual indication of this level. The oil level may drop or rise during
operation depending on the rotation of the bearing. Oil should be
added only when the bearing is not operating. Both the static oil
level and the running oil level should be marked on the oil sight
gauge and properly identified.
Prior to installation on the structure, if the application RPM is
greater than 20% of catalog maximum speed, excess grease
must be removed to the levels outlined previously. Removal of
excess grease must be done in a clean, protected environment.
For circulating oil, the flow rate and size of return drains are
shown in Table 12. Consult Dodge Industrial application
engineering for recommendations.
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MN3066