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Working Speed
Always observe the right speed for the job. The working speed is subject to the
drill bit diameter and the material to be drilled.
The below mentioned values are only suggested guideline and show the working
speed for different materials.
Drill
Cast
Ø
Iron
3
2450
4
1870
5
1870
6
1330
7
1330
8
1330
9
790
10
790
11
790
12
500
13
500
14
500
16
500
Generally, when drilling in soft material the speed should be higher and when
drilling in hard materials the speed should be lower.
Factors which determine the speed for drilling are: the kind of material that has to
be drilled, the size and the depth of the hole and the quality of cut.
Working Speed
Steel
Iron
2450
2450
1330
2450
1330
1330
790
1330
790
1330
790
790
500
790
500
790
500
790
500
500
500
500
500
500
500
500
Soft-
Hard-
wood
wood
2450
2450
2450
2450
2450
2450
1870
1870
1870
1870
1870
1870
1330
1330
1330
1330
790
790
790
790
790
500
790
500
790
500
36
PVC
Alum.
2450
-
2450
-
2450
-
1870
-
1870
-
1870
-
1330
2450
1330
2450
790
2450
790
2450
-
2450
-
1870
-
1870
Brass
-
-
-
-
-
-
2450
2450
2450
1870
1870
1870
1330
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