Drilling Speed Comparison - Hitachi DH 24PM Technical And Service Manual
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Also See for DH 24PM:
- Safety and instruction manual (64 pages) ,
- Handling instructions manual (48 pages) ,
- Handling instructions manual (76 pages)
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6-2. Drilling Speed Comparison
Drilling speed varies considerably depending on the work conditions. Use the factory test results shown in Fig. 1
for comparison purpose only.
800
700
600
500
400
300
200
100
[Test conditions]
Direction
Pushing force
Test material
6
8
10
12
: Downward drilling
: 98 N (10 kgf)
: Concrete panel with a compression strength of 2,352 N/cm
HITACHI DH 24PM
B
C
14
16
18
Drilling bit diameter (mm)
Fig. 1
--- 10 ---
22
24
20
2
(240 kgf/cm
2
)
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