Roller Bearing Faults - Siemens SIMOTICS 1PQ8 Operating Instructions Manual
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Operation
8.11 faults
8.11.5
Roller bearing faults
Damage to roller bearings can be difficult to detect in some cases. If in doubt, replace the
bearing. Use other bearing designs only after consulting the manufacturer.
Table 8-4
Roller bearing faults
↓ Bearing overheats
↓ Bearing "whistles"
↓ Bearing "knocks"
Possible causes of faults
X
High coupling pressure
X
Belt tension too high
X
Bearing contaminated
X
High ambient temperature
X
X
Insufficient lubrication
X
X
Bearing canted
X
X
Insufficient bearing play
X
Excessive bearing play
X
X
Bearing corroded
X
Too much grease in bearing
X
Wrong grease in the bearing
X
Friction marks on raceway
X
Brinelling or scoring
108
Remedial measures
Align the machine more accurately.
Reduce the drive belt tension.
Clean or replace the bearing. Check the seals.
Use a suitable high-temperature grease.
Grease the bearings as instructed.
Properly install the bearing.
Contact the Service Center.
Contact the Service Center.
Replace the bearing. Check the seals.
Remove surplus grease.
Use the correct grease.
Replace the bearing.
Replace the bearing. Avoid any vibration at standstill
SIMOTICS TN Series N-compact 1PQ8
Operating Instructions 11/2018
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