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8.10.5
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
8.10.6
Holding brake faults
Information on holding brake faults can be found in the manufacturer's operating instructions
in the (Page 169) appendix.
SIMOTICS M-1PH8 1PH818., 1PH822., 1PH828.
Operating Instructions 10/2017
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
Operation
8.10 Faults
103
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