Reworking the commutator after the formation of grooves
Moderate scoring or burn marks do not affect the operational reliability of the machine. The
commutator only needs to be overhauled if it is seriously scorched or grooved and/or is out-of-
round.
● Grind the commutator in the mounted position with a commutator grinder of medium grain
size, grain number 80 (210 - 177 μm).
● To do this, lift most of the brushes and operate the motor at a speed of approximately 600
rpm.
● Place the grinder on the brush holder.
Note
Suck or blow the dust out
Dust inside the motor can cause winding damage. Suck or blow the dust out.
● Remove the grinding dust with dry, oil-free compressed air. Deburr the edges of the
segments if necessary.
● Where the commutator is severely out-of-round, remove the rotor and skim the commutator
on a turning machine. You can skim the commutator down to the smallest permissible
diameter (d
min
) given in the following table.
Table 9-3
Commutator overhaul – minimum permissible diameter
Shaft height
Nominal diameter d
N
(mm)
Minimum diameter d
min
(mm)
1G.5 / 1H.5
500
560
546
630
720
706
1G.6 / 1H.6
160
160
154
180
190
184
200
210
202
225
240
232
250
265
257
280
300
292
1G.7 / 1H.7
355
350
340
400
350
340
450
400
390
Maintenance
9.1 Inspection and maintenance
SIMOTICS DC 1GG6
92
Operating Instructions 02/2016
Summary of Contents for SIMOTICS DC 1GG6
Page 2: ...08 02 2016 10 27 V4 00 ...
Page 12: ...Table of contents SIMOTICS DC 1GG6 12 Operating Instructions 02 2016 ...
Page 14: ...Introduction 1 1 About these instructions SIMOTICS DC 1GG6 14 Operating Instructions 02 2016 ...
Page 70: ...Commissioning 7 8 Switch off SIMOTICS DC 1GG6 70 Operating Instructions 02 2016 ...
Page 82: ...Operation 8 9 Faults SIMOTICS DC 1GG6 82 Operating Instructions 02 2016 ...
Page 104: ...Maintenance 9 2 Repair SIMOTICS DC 1GG6 104 Operating Instructions 02 2016 ...
Page 138: ...Service and Support SIMOTICS DC 1GG6 138 Operating Instructions 02 2016 ...
Page 142: ...Quality documents SIMOTICS DC 1GG6 142 Operating Instructions 02 2016 ...
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