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7 Servicing/Maintenance
Table 19: Bearing replacement
Ambient temperature
40 °C
NOTE
The bearing service life is reduced e.g. for vertical installations, high vibration and
shock loads, frequent reversing duty, higher ambient temperature and higher
rotating speeds.
7.2.2.3.1.1 Grease lubrication
The bearings are supplied packed with high-quality lithium-soap grease.
7.2.2.3.1.2 Intervals
The rolling element bearings of the motor are grease-packed and maintenance-free.
Motors with axially reinforced bearings are excluded. These drive-end rolling element
bearings must be re-lubricated as part of the maintenance routine.
NOTE
On some pump designs the rolling element bearings are lubricated for life. These
pumps are not provided with a lubricating nipple on the bearing bracket.
NOTE
If re-lubrication intervals are short, we recommend that the grease be completely
replaced once a year.
Otherwise, the grease fill must be replaced completely every two years. To do so,
remove the rolling element bearings, clean and pack with new grease.
Motors with lubricating nipple must be re-lubricated every 2000 hours.
If the motor is operated under extreme conditions, such as vibrations or high
temperatures, the bearings must be re-lubricated more frequently.
7.2.2.3.1.3 Re-lubrication
DANGER
Excessive temperatures as a result of bearings running hot or defective bearing
seals
Fire hazard!
Damage to the motor!
▷ Regularly check the condition of the lubricant.
▷ Regularly check the rolling element bearings for running noises.
WARNING
Work in the immediate vicinity of rotating parts
Risk of hand injury!
▷ Always have this work performed by trained personnel.
▷ Take particular caution when performing this work.
KSB IE4-Motor
Bearing replacement interval
20,000 h
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