Prolonged Service Life Of The Carbon Brushes Thanks To The New Construction; Wear Resistance Of Armature Coil - Hitachi G 18SE3 Technical Data And Service Manual

4-2. Prolonged Service Life of the Carbon Brushes Thanks to the New Construction

The service life of the carbon brushes is 1.5 times longer than the current models thanks to the adoption of the
new carbon brush retainer construction. The service life of the carbon brushes is equivalent to that of the
competitors.

4-3. Wear Resistance of Armature Coil

Both ends of the armature coil are sealed with protect tape in addition to varnish treatment to minimize wear of the
armature coil caused by dust.
G 18SE3/G 18UA2/G 18SG2/G 18UB2/
G 23SC3/G 23UB2/G 23SE2/G 23UB2
G 18SE2/G 18UA/G 18SG/G 18UB/
G 23SC2/G 23UB/G 23SE/G 23UB
B
C
100
50 0
Fig. 2
Protect tape winding
(a)
G 18SE3/G 18UA2/G 18SG2/G 18UB2/
G 23SC3/G 23UB2/G 23SE2/G 23UB2
G 18SE2/G 18UA/G 18SG/G 18UB/
G 23SC2/G 23UB/G 23SE/G 23UB
0
100 50
(b)
Fig. 3
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