DC motor - Siemens, s.r.o.
DC motor - Siemens, s.r.o.
DC motor - Siemens, s.r.o.
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Maintenance<br />
Reworking the slots<br />
Shaft height Nominal diameter Minimum diameter<br />
dN (mm)<br />
dmin (mm)<br />
450 400 390<br />
When the commutator is skimmed the slots also have to be reworked (for example<br />
with a special saw). The recommended slot dimensions can be taken from the<br />
illustrations below:<br />
Figure 6-2 View and cross-section A - B<br />
Depending on the method of slot reworking used, it may be expedient to<br />
incorporate an undercut when skimming the commutator, as shown in the<br />
illustration below (Detail X). At the minimum permissible commutator diameter this<br />
undercut must not be deeper than 1 mm.<br />
Figure 6-3 Detail X and Detail Y<br />
Note<br />
Remove any dust that arises by suction or purging with air; do not allow it to get<br />
inside the <strong>motor</strong>. After reworking the commutator, refit the brush rocker and brush<br />
holder.<br />
[ID 577]<br />
SIEMENS AG T61160347010001 (DMHO V9)<br />
6-8 Operating instructions 1GG6286-0NA4.-1VV1-Z
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