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6-2. Drilling Speed Comparisons
The data shown below were obtained in actual factory tests, and are for reference only. Actual drilling speeds
may vary in accordance with operating conditions, operator skill, etc.
Test condition:
Drill bit: Genuine parts
Workpiece material: Concrete (compressive strength 240 kg/cm
2
)
Drilling into concrete floor
Drilling speed (mm/min.)
Bit dia. (mm)
600
500
400
0
100
200
300
8 dia.
10 dia.
12 dia.
14.5 dia.
16 dia.
HITACHI
FDV 16VB2
HITACHI
FDV 16VB
C-1, C-2
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