HYDROK – Safety
2.11 Selection of aggregate
Interpretation of the clamping and release time and
volume. The clamping and release time depends on
the current level.
Example:
HYDROK size 40
Axial force
22,5 kN
Max. pressure
85 bar
Volume flow of the pump
4 l/min
Calculation of the
clamping and release
time:
0,01
l
4
l
/
60s
=
0,15
s
[Stroke 4 mm]
Calculation of the vol-
ume:
p
=
F
A
A
=
F
p
=
22.500
N
85bar
∗
10
N
cm
2
=
26,47
cm
2
→ Piston surface A = 26,47 cm²
26,47
cm
2
∗
4mm
(
clamping reserve
+
release stroke
)=
105cm
3
105cm
3
→
0,01
dm
3
=
0,01
liter
2.11.1 Clamping and release flow at HYDROK
[in liters]
size 32 size 40 SE size 42 size 52 size 65 size 80 size 100
Clamping volume /
1 Clamping device
0,013
0,01
0,022
0,022
0,028
0,031
0,080
Release volume /
1 Clamping device
0,013
0,01
0,022
0,022
0,028
0,031
0,080
2.11.2 Clamping and release times at 2-liter hydraulic aggregate
[In seconds]
size 32 size 40 SE size 42 size 52 size 65 size 80 size 100
1 Clamping device
0,39
0,60
0,65
0,65
0,83
0,93
2,4
2 Clamping device
0,78
0,60
1,30
1,30
1,66
1,86
4,81
4 Clamping device
1,56
1,20
2,60
2,60
3,32
3,72
9,61
2.11.3 Clamping and release times at 4-liter hydraulic aggregate
[In seconds]
size 32 size 40 SE size 42 size 52 size 65 size 80 size 100
1 Clamping device
0,195
0,15
0,32
0,32
0,42
0,47
1,2
2 Clamping device
0,39
0,30
0,65
0,65
0,83
0,93
2,40
4 Clamping device
0,78
0,60
1,30
1,30
1,66
1,86
4,81
Order h49 7144.907-333
37
