DC motor - Siemens, s.r.o.
DC motor - Siemens, s.r.o.
DC motor - Siemens, s.r.o.
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Operation<br />
↓ Bearing squeaks<br />
↓ Bearing knocks<br />
Overview - bearing faults<br />
Possible cause of fault Remedial measures<br />
X Too much grease in bearing Remove excess grease<br />
X Felt rings pressing on shaft Fit felt rings better or replace with new<br />
ones<br />
X Coupling pressing Align <strong>motor</strong> more precisely<br />
X Belt tension too high Reduce belt tension<br />
X Bearing soiled Clean or replace bearing; check seals<br />
X Ambient temperature above 40 °C Use high-temperature grease<br />
X X Inadequate lubrication Lubricate according to specifications<br />
X X Bearing fitted askew Check fitting, fit outer ring more lightly<br />
X X Too little bearing play Fit bearing with more play (only after<br />
consultation with the manufacturer)<br />
X X Bearing is corroded Replace bearing, check seals<br />
X Scalping points in the raceway Replace bearing<br />
X Scoring Replace bearing, avoid vibrations at<br />
standstill<br />
X Too much bearing play Fit bearing with less play (only after<br />
consultation with the manufacturer)<br />
[ID 568]<br />
5.6.4 Faults with the brushes<br />
Overview<br />
Note<br />
Changes to the brush complement or brush material may only be made in<br />
consultation with the manufacturer!<br />
Table 5-4 Faults with the brushes<br />
Overview - faults with the brushes<br />
Fault characteristics<br />
↓ Brush edges knocked out or splintered<br />
↓ High brush wear<br />
↓ High wear despite good commutation<br />
Possible causes of fault Remedial measures<br />
System fault<br />
SIEMENS AG T61160347010001 (DMHO V9)<br />
5-6 Operating instructions 1GG6286-0NA4.-1VV1-Z
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