Selling Point Descriptions - Hitachi DV 18DMR Technical Data And Service Manual

4-1. Selling Point Descriptions

4-1-1. Compact and high power: Max. torque 62 N
While the Model DV 18DMR is compact and lightweight (entire length 253 mm, weight 2.7 kg), it provides the
class-top maximum torque 62 N
and DV 14DMR can drill large diameter holes and tighten screws effortlessly.
Model DV 18DMR
Max. torque [N m]
•
Overall length [mm]
Overall height [mm]
Overall width [mm]
Weight [kg]
Model DV 14DMR
Max. torque [N m]
•
Overall length [mm]
Overall height [mm]
Overall width [mm]
Weight [kg]
4-1-2. Improved overload durability (improved cooling efficiency)
The Models DV 18DMR and DV 14DMR are equipped with the separate-type motor. To improve the overload
durability in continuous operation, the optimally designed cooling air path that is descended from the Model
DS 12DM increases the cooling efficiency as well as the large radial fan increases the volume of air (See Fig. 1).
m thanks to the optimum design (see Tables 1 and 2). The Models DV 18DMR
•
DV 18DV
62 45
253 242
248 247
76 76
2.7 2.5
DV 14DV
52 39
253 242
245 242
76 76
2.5 2.2
DV 18DV
Fig. 1 Curves of motor temperature rise
m (DV 18DMR)
•
Table 1
P E
58 56
325 273
264 252
87 80
3.1 2.9
Table 2
E Q
52 51
273 263
252 237
80 79
2.7 2.4
DV 18DMR
--- 3 ---
Q B
55 54
263 262
241 267
90 87
2.7 2.7
B C
45 38
262 267
260 244
86 94
2.5 2.4
C
45
267
250
95
2.6