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The drip space in the bearing cap for outflowing old grease is large enough
to collect the outflowing grease during the nominal bearing service life with
state-of-the art regreasing.
See the plate on the motor for the specified lubricating intervals and the type
and quantity of grease to be used. The manufacturer normally uses ESSO
Unirex N3, a lithium complex soap/mineral oil grease.
Table 10: Standard regreasing intervals in hours
Ambient
temperature
Rpm up
to 1800 min
–1
Rpm up
to 3600 min
–1
40 °C
5000 h 2500 h
50 °C 2500 h 1000 h
Please note!
In motors with enhanced performance (motor type ...X), in
heavy drive conditions like belt and gear drive with additional
bearing loads and in vertical designs the lubricating intervals
are to be reduced by 50%.
Observe the specified quantity of grease. Overgreasing can
lead to a sharp increase in the bearing temperature and hence
to the failure of the bearing.
Caution!
If regreasing is carried out while the motor is running, provide for
adequate protection against rotating parts!
Only resin-free and acid-free anti-friction bearing grease with a
drop point of approx. 200°C is to be used.
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