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Depth in the shaft

Values for calculation

D \mathrm{mm}

Calculation

Depth in the shaft

\text{if }\ D\le 8
t=1.2
\text{else if }\ D\le 10
t=1.8
\text{else if }\ D\le 12
t=2.5
\text{else if }\ D\le 17
t=3
\text{else if }\ D\le 22
t=3.5
\text{else if }\ D\le 30
t=4
\text{else if }\ D\le 38
t=5
\text{else if }\ D\le 44
t=5
\text{else if }\ D\le 50
t=5.5
\text{else if }\ D\le 58
t=6
\text{else if }\ D\le 65
t=7
\text{else if }\ D\le 75
t=7.5
\text{else if }\ D\le 85
t=9
\text{else if }\ D\le 95
t=9
\text{else if }\ D\le 110
t=10
\text{else if }\ D\le 130
t=11
\text{else if }\ D\le 150
t=12
\text{else if }\ D\le 170
t=13
\text{else if }\ D\le 200
t=15
\text{else if }\ D\le 230
t=17
\text{else if }\ D\le 260
t=20
\text{else if }\ D\le 290
t=20
\text{else if }\ D\le 330
t=22
\text{else if }\ D\le 380
t=25
\text{else if }\ D\le 440
t=28
\text{else}
t=31
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