HYDROK
Use and limits of use
48
Order h49 7144.907-333
Size of the clamp-
ing head chuck
Up to total chuck
length
𝑳[𝒎𝒎]
𝑭
𝒒 𝒎𝒂𝒙
[𝑵]
65
< 140
6000
80
< 140
7200
100
< 160
9000
125
< 200
13000
Table 14: Maximum permitted transverse force
On extended chuck versions, the ratio of maximum permitted
transverse force to chuck lengths needs to be reduced. For
example, size 26 with
𝐿 = 150𝑚𝑚
120𝑚𝑚
150𝑚𝑚
∗ 1800𝑁 = 1440𝑁
5.2.5.5 Further to Principle 5:
𝑴
𝒒
≤ 𝑴
𝒒 𝒎𝒂𝒙
With drilling operations that are radial to the workpiece axis,
the transverse force examined under Principle 4 exerts an
additional torque
𝑀
𝑞
on the clamping head and/or on the
chuck. This moment must not rise in an unlimited way to pre-
vent damage to the clamping head chuck, even if the clamp-
ing of the workpiece may still hold firmly. The following table
shows the related permissible maximum values.
Torque
𝑀
𝑞
occurring through the introduction of transverse
force
𝐹
𝑞
𝑀
𝑞
= 𝐹
𝑞
∗ 𝐿
𝑞
Size of the clamp-
ing head chuck
Up to total chuck
length
𝑳[𝒎𝒎]
𝑴
𝒒 𝒎𝒂𝒙
[𝑵𝒎]
26
< 120
90
40
< 125
180
52
< 125
210
65
< 140
300
80
< 140
360
100
< 160
450
125
< 200
650
Table 15: Maximum permitted torque due to transverse force
On extended chuck versions, the ratio of maximum permitted
torque to chuck lengths needs to be reduced. For example,
size 26 with
𝐿 = 150𝑚𝑚
120𝑚𝑚
150𝑚𝑚
∗ 90𝑁𝑚 = 72𝑁𝑚
