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< D 10VH >
0
Dr
illing speed (mm/min.)
6.5 mm dia.
10 mm dia.
Bit dia. (mm)
30
35
25
20
15
D 10VH
D 10VC
P
C
10
5
0
Dr
illing speed (mm/min.)
12 mm dia.
15 mm dia.
Bit dia. (mm)
2500
3000
2000
1500
1000
500
0
Dr
illing speed (mm/min.)
19 mm dia.
25 mm dia.
Bit dia. (mm)
600
700
500
400
300
200
100
D 10VH
D 10VC
P
C
D 10VH
D 10VC
P
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