Westfalia 28 31 19, Instruction Manual

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26
Working Speed
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.
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.
Drill
Ø
Cast
Iron
Steel Iron Soft-
wood
Hard-
wood PVC Alum. Brass
in mm min
-1
min
-1
min
-1
min
-1
min
-1
min
-1
min
-1
min
-1
3 2450 2450 2450 2450 2450 2450 - -
4 1870 1330 2450 2450 2450 2450 - -
5 1870 1330 1330 2450 2450 2450 - -
6 1330 790 1330 1870 1870 1870 - -
7 1330 790 1330 1870 1870 1870 - -
8 1330 790 790 1870 1870 1870 - -
9 790 500 790 1330 1330 1330 2450 2450
10 790 500 790 1330 1330 1330 2450 2450
11 790 500 790 790 790 790 2450 2450
12 500 500 500 790 790 790 2450 1870
13 500 500 500 790 500 - 2450 1870
14 500 500 500 790 500 - 1870 1870
16 500 500 500 790 500 - 1870 1330