Hitachi G 10SR2 Service Manual page 6

High-power motor
The Models G 10SR2, G 12SR2 and G 13SR2 are equipped with high-power motors and are more powerful
than the current Models G 10SR, G 12SR and G 13SR although they are compact and lightweight. We could
say that the ratio of the motor's maximum output to the product's weight defines its performance. Compared
with a typical competitor's model in terms of this indicator, the Models G 10SR2, G 12SR2 and G 13SR2 prove
to have the highest performance.
Item
1
Max. output *
2
Actual product weight *
Max. output/product weight (W/kg)
* 1 Depends on the market.
2
* Actual product weight excludes cord, side handle, depressed center wheel, wheel nut, wheel washer and wheel
guard.
Excellent overload durability
The Models G 10SR2, G 12SR2 and G 13SR2 provide excellent overload durability thanks to an improved
cooling mechanism and a high-power motor.
Practical test data: Comparison of torque when the stator coil temperature rise is 200˚K
116
100
97
114
100
Fig. 1
Table 1 Comparison of max. output and product weight
Maker
Model
G 10SR2/
G 12SR2/
G 13SR2
(W) 1,010
(kg) 1.5 (3.3 lbs.)
673 (306 W/lbs.)
G 10SR2/
G 12SR2
G 10SR/
G 12SR
C
B
0
50
HITACHI
G 10SR/
G 12SR/
G 13SR
840
1.6 (3.5 lbs.)
525 (240 W/lbs.)
G 13SR2
G 13SR
C
0
--- 3 ---
C
700
1.5 (3.3 lbs.) 1.4 (3.1 lbs.)
467 (212 W/lbs.) 536 (241 W/lbs.)
82
100
50
Fig. 2
B
750
106
100