Drilling Speed Comparison - Hitachi DH 24PD2 Technical Data And Service Manual

6-3. Drilling Speed Comparison

Drilling speed varies considerably depending on the work conditions. Use the factory test results shown in Fig. 2
for comparison purpose only.
700
600
500
400
300
200
100
0
6
[Test conditions]
Direction
Pushing force
Test material
8 10 12
: Downward drilling
: 98 N (10 kgf)
: Concrete panel with a compression strength of 2,352 N/cm
16
14
Drill bit dia. (mm)
Fig. 2
--- 13 ---
HITACHI DH 24PD2
B
C
HITACHI DH 24PD
18 20 22
2 (240 kgf/cm
24
2 )