Selling Points; Class-Top Overload Durability - Hitachi G 18SH2 Technical Data And Service Manual

4. SELLING POINTS

Wear resistance of armature coil:
1.5 times higher compared to the current models
Power 2,000 W motor design
(Max. power output 3,500 W)
Maker C's model: 3,300 W
Maker B's model: 3,400 W

4-1. Class-top overload durability

The Models G 18SH2, G 18U2, G 23SF2 and G 23U2 provide excellent overload durability thanks to the improved
motor winding and carbon brush material in common with the current models (the service life of the carbon
brushes is also prolonged). Figure 1 shows the comparison of overload durability when the stator coil
temperature rise is 200˚K using the Model G 23SF2 as the reference. As is evident from this, the Models
G 18SH2, G 18U2, G 23SF2 and G 23U2 are superior to the competitors in overload durability.
Class-top overload durability
1.4 times higher compared to maker C's model
1.3 times higher compared to maker B's model
100 50
Fig. 1
--- 2 ---
Dust-proof ball bearing thanks
to the labyrinth construction
Durable ball bearing retainer
thanks to the iron bushing
Prolonged service life of the carbon brushes
thanks to the new construction:
1.4 times higher compared to the current models
G 18SH2/G 23SF2
G 18U2/G 23U2
G 18SH/G 23SF
G 18U/G 23U
C
B
0