Selling Point Descriptions - Hitachi DS 18DMR Service Manual

4-1. Selling Point Descriptions

4-1-1. Compact and high power: Max. torque 62 N
While the Model DS 18DMR is compact and lightweight (entire length 237 mm, weight 2.5 kg), it provides the
class-top maximum torque 62 N
and DS 14DMR can drill large diameter holes and tighten screws effortlessly.
Model DS 18DMR
Max. torque [N m]
•
Overall length [mm]
Overall height [mm]
Overall width [mm]
Weight [kg]
DS 14DMR
Model
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 DS 18DMR and DS 14DMR are equipped with the separate-type motor that is the same as a driver
drill with a power cord. 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 DS 18DMR
•
DS 18DVB2
62 45
237 241
248 247
76 76
2.5 2.4
DS 14DVB2
50 39
237 241
245 242
76 76
2.3 2.1
Fig. 1 Curves of motor temperature rise
m (DS 18DMR)
•
Table 1
P E
58 56
270 260
266 252
87 80
3.0 2.9
Table 2
P Q
47 45
270 254
266 237
87 79
3.0 2.4
--- 3 ---
Q B
51 55
254 247
241 267
90 87
2.6 2.6
B C-1
51 38
247 255
260 244
86 94
2.4 2.3
C-1 C-2
45 45
255 243
249 251
95 95
2.5 2.4
C-2
40
243
246
94
2.1