Lenze 13.7xx Motors-Geared motors - Manual (Page 43)

Maintenance/repair
Repair
Wear control of collectors
7
l
43 BA 13.0009 − EN 2.1
Dimensions of the
carbon brushes Motor type Carbon dimensions
a x t x r
Minimum length
"r
min.
"
[ mm ] [ mm ]
13.12 L.35
U < 60V 6.4 x 8 x 12
6.5
U > 60V 5 x 8 x 12
13.12 L.45
U < 60V 8 x 10 x 16 6.5
U > 60V 5 x 8 x 16 7.0
13.12 L.55 U < 60V 6.4 x 12.5 x 16 7.0
U > 60V
13.12 L.65
U < 60V 8 x 16 x 22 5.5
U > 60V 6.4 x 16 x 20 6.0
13.12 L.75
U < 60V 10 x 16 x 21 7.0
U > 60V 6.4 x 16 x 20 6.5
Tab. 7 Information on the lengths of carbon brushes
7.1.4 Wear control of collectors
Generally the collectors only show low traces of wear and do not have to be reworked over
several carbon brush sets.
If there are grooves >0.3 mm (sporadical phenomenon in the case of frequent overload),
we recommend to overspeed the collectors.
7.2 Repair
Lenze recommends that repairs are carried out by the Lenze Service.