Operation
Version 1.4.3 - 2020-12-14
27
Translation of original instruction
BF16V
EN
BF16V_
G
B_
4.f
m
4.5.3
Standard values for speeds with HSS – Eco – twist drilling
•
The above mentioned indications are standard values. In some cases it may be advanta-
geous to increase or decrease these values.
•
When drilling a cooling or lubricating agent should be used.
•
For stainless materials (e.g. VA – or NIRO steel sheets) do not center as the material would
compact and the drill bit will become rapidly blunt.
•
The workpieces need to be tensed in flexibly and stably (vice, screw clamp).
INFORMATION
High temperatures are generated at the tip of the tool by the occurring friction heat. The tool
should be cooled during the milling process. Cooling the tool with a suitable cooling lubricant
ensures better working results and a longer edge life of the cutting tool.
60
53 - 133
53 - 117
795 - 1860
65
49 - 122
49 - 108
735 - 1715
Tool diameter
[ mm ]
form cutters
Steel
15 - 24 m/min
Grey cast iron
10 - 20 m/min
Al alloy
cured 150 - 250
m/min
Speed [
min
-1
]
4
1194 - 1911
796 - 1592
11900 - 19000
5
955 - 1529
637 - 1274
9550 - 15900
6
796 - 1274
531 - 1062
7900 - 13200
8
597 - 955
398 - 796
5900 - 9900
10
478 - 764
318 - 637
4700 - 7900
12
398 - 637
265 - 531
3900 - 6600
14
341 - 546
227 - 455
3400 - 5600
16
299 - 478
199 - 398
2900 - 4900
Material
Drill diameter
Cooling
3)
2
3
4
5
6
7
8
9
10
Steel, unalloyed,
up to 600 N/mm
2
n
1)
5600
3550
2800
2240
2000
1600
1400
1250
1120
E
f
2)
0.04
0.063
0.08
0.10
0.125 0.125
0.16
0.16
0.20
Structural steel, alloyed, quen-
ched and subsequently drawn,
up to 900N/mm
2
n
3150
2000
1600
1250
1000
900
800
710
630
E/oil
f
0.032
0.05
0.063
0.08
0.10
0.10
0.125 0.125
0.16
Structural steel, alloyed, quen-
ched and subsequently drawn,
up to 1200 N/mm
2
n
2500
1600
1250
1000
800
710
630
560
500
Oil
f"
0.032
0.04
0.05
0.063
0.08
0.10
0.10
0.125 0.125
Stainless steels up to 900 N/
mm
2
e.g. X5CrNi18 10
n
2000
1250
1000
800
630
500
500
400
400
Oil
f
0.032
0.05
0.063
0.08
0.10
0.10
0.125 0.125
0.16
1): Speed [ n ] in r/min
2): Feed [ f ] in mm/r
3): Cooling: E = Emulsion; oil = cutting oil