Hitachi G 10SD2 Technical Data And Service Manual page 11

10,000
8,000
6,000
4,000
2,000
0
Fig. 2 Comparison in torque vs. rotation speed and stator coil temperature rise (G 13SD)
Fig. 2 indicates:
(1) The Model G 13SD is equipped with a high-power motor and improved cooling mechanism. As a result, it is
superior to C in both rotation speed and stator coil temperature rise at the same torque.
(2) The Model G 13SD has a tenacious motor with less rotation speed drop than C at the same torque. This
means that the working efficiency of the Model G 13SD is superior to C in heavy-duty work.
(3) The stator coil temperature rise of the Model G 13SD is lower than that of C at the same torque, and the
torque when the motor burns out is about 1.4 times higher compared to C. This means that the overload
durability of the Model G 13SD is superior to C.
Rotation speed of spindle
HITACHI G 13SD
C
C
HITACHI G 13SD
Stator coil temp. rise
Load
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: Burn-out point
400
200
0