Re-Greasing Intervals; Re-Greasing For Re-Lubricated Bearings - ABB AMG 0180 User Manual

Like all essential parts of the machine, bearings must periodically be cleaned and
checked. The frequency of the operation and the procedure to be used depend
more than anything on operating conditions.
For cleaning, preferably use white spirit, good quality paraffin, petrol or benzol.
After this operation, parts shall be immediately coated with oil or grease to protect
against corrosion.

7.5.2 Re-greasing intervals

The re-greasing of non-closed bearings can be performed either manually or by
means of an automatic system. In either case, it has to be verified that a suitable
amount of the correct grease is entering the bearing at suitable intervals. The re-
greasing interval is found on the bearing plate.
NOTE: Grease can cause skin irritation and eye inflammation. Follow all safety
NOTE: Regardless of the re-greasing interval, the bearings need to be re-greased
The re-greasing intervals are calculated for an operating temperature of 70 °C
(160 °F). If the operating temperature is lower or higher than the assumed, the re-
grease interval has to be altered accordingly. Higher operating temperature
decreases the re-greasing interval.
NOTE: An increase in the ambient temperature raises the temperature of the
Re-greasing intervals for frequency converter drives
Higher speed operation, e.g. in frequency converter applications, or lower speed
with heavy load will require shorter lubrication intervals or a special lubricant.
Consult manufacturing ABB factory After Sales department in such cases.
NOTE: The constructional maximum speed of the machine must not be exceeded.

7.5.3 Re-greasing for re-lubricated bearings

Some of rolling bearings of rotating electrical machines in D-end need to be re-
greased, see Chapter 7.5.2. Re-greasing intervals. The re-greasing can be
performed either manually or by means of an automatic system. In either case, it
has to be verified that a suitable amount of the correct grease is entering the
bearing at suitable intervals.
NOTE: Grease can cause skin irritation and eye inflammation. Follow all safety
Manual re-greasing of the bearings
Machines suited for manual re-greasing are equipped with grease nipples. In order
to prevent debris from entering the bearings, the grease nipples, as well as the
surrounding area has to be cleaned thoroughly before re-greasing.
Manual re-greasing while the machine is running
•
Re-greasing while the machine is running:
•
Verify that the grease to be used is suitable.
•
Clean the grease nipples and the area around them.
precautions specified by the grease manufacturer.
at least once per year.
bearings correspondingly. The values for the re-greasing interval should
be halved for every 15 °C (30 °F) increase in bearing temperature and
may be once doubled for a 15 °C (30 °F) decrease in bearing
temperature.
The suitability of the bearings for high-speed operation must be checked.
precautions specified by the grease manufacturer.
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