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Reworking the slots
● If the commutator is skimmed, the slots should also be remachined, e.g. with a special saw.
● Depending on the method used to machine the slots, it is useful to machine an undercut
Final measures
● After the commutator has been reworked, adjust the brush rocker and the brush holder
9.1.11
Maintaining terminal boxes
Requirement
The machine is de-energized.
Checking for tightness
● Terminal boxes must be regularly checked for tightness, undamaged insulation, and tight
● If dust or humidity have infiltrated the terminal box, this should be cleaned and dried
SIMOTICS DC 1GG7
Operating Instructions 02/2016
The following diagrams give the recommended slot dimensions.
Image 9-2
Reworking the slots
as shown in the diagram below (detail X) when the commutator is skimmed. This undercut
must not be deeper than 1 mm for the smallest permissible commutator diameter.
Image 9-3
Final work on the commutator after skimming.
(Page 89).
terminal connections.
(particularly the insulators).
Maintenance
9.1 Inspection and maintenance
91
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