DNCKE/KEC
Festo – DNCKE/KEC – 2017-10b English
17
WARNING
Unexpected movement of components.
Injury due to impact or pinching.
Make sure that there is a balance of forces acting on the operating cylinder’s piston.
There is a danger of the piston rod advancing suddenly when it is loosened due to
axial force (weight force) applied, especially with vertical installation.
Note
Observe the following points:
–
The test force (test pressure) must equal at least the force (pressure) acting in
the application or be specified in the application’s risk evaluation.
–
The test force must not be greater than the maximum static holding force
(
è
13 Technical data).
–
The piston rod must not slip through during a testing period of 60 s. Remedy in
case of slipping: readjust the clamping unit (
è
6.2 Adjustment of the clamping
unit).
Horizontal mounting position
Case 1: without additional weight force:
Fig. 21
P
Size
KEC
16
20
25
Test force F
P
[N]
1300
3200
8000
Tab. 6
Static functional test
Place the piston rod in the returned end position.
Exhaust port (
2
è
Fig. 1). The clamp is active.
Pressurise cylinder chamber of the DNCKE in the advancing direction at P = 10 bar while simultan
eously exhausting the cylinder chamber in the returning direction. Test force for testing with KEC
è
Tab. 6.
The test force (test pressure) should be acting for 60 s. During this time, the piston should not move
any further.
Tab. 7
