--- 6 ---
6-2. Drilling Speed Comparisons
Drilling speed depends on the operating conditions. The following test results are based on actual factory tests,
and should be used as a reference only.
< D 10VC2>
0
Dr
illing speed (mm/min.)
19 mm dia.
25 mm dia.
Bit dia. (mm)
500
600
400
300
200
100
0
Dr
illing speed (mm/min.)
12 mm dia.
15 mm dia.
Bit dia. (mm)
2000
2500
1500
1000
500
0
Dr
illing speed (mm/min.)
6.5 mm dia.
10 mm dia.
Bit dia. (mm)
30
35
25
20
15
D 10VC2
D 10VC
B
B
C
10
5
D 10VC2
D 10VC
B
B
C
D 10VC2
D 10VC
B
B
C
Twist bit
Test material: Mild steel
Thrust: 300 N
Auger bit
Test material: Western hemlock
Flat spade bit
Test material: Western hemlock
Thrust: 150 N
