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XND.00041.002_B – 05/2022
42
Risks of hydraulic system
12.2
Hydraulic systems operate at high pressures. Do not attempt any manipulation when the
system is under pressure!
Risk of fingers being caught during clamping
Hydraulic vices pose a risk of trapping!
Safe operation can only be guaranteed when the clamping width has been correctly set.
Set the clamping range such that the distance between the jaws is approx. 1 – 2 mm larger than
the workpiece; this means that the gap is so small that fingers cannot be trapped.
Do not operate the vice with a gap between the workpiece and the jaws on either side that
is large enough for fingers to be trapped in order to avoid accidents when the vice clamps
the workpiece.
Choose a width between jaws that is clearly larger or clearly smaller.
When producing purpose-made jaws or when using aluminium jaws, it is important to avoid
ridges that could present a trapping risk.
Maintaining pressure during operation
It is possible that hydraulic cylinders have small leaks. During milling work, the clamping device
must be continuously supplied with hydraulic pressure from the hydraulic system in order to
ensure that there is no loss of pressure due to leakage.
Hydraulic hoses must be protected against hot fragments; hoses must be regularly checked
for wear.
Important:
If the hydraulic sustem loses pressure or a hose is damaged, the clamping force reduces sharply.
To avoid pressure drops due to switching operations of neighbouring switching valves or
due to system failure system failure of the hydraulics, we recommend installing a non-return
valve befor the switching valve P inlet.
For pallet systems that are pressure-relieved during change, we recommend the
installation of a switched check valve to a switched non-return valve so that the tensioner
does not open during a pressureless changeover.
Check the vice regularly for leakage.
Pull rod extension
13
Removing / Installation
Turn the spindle completely out of the adjustment spindle.
Screw the pull rod extension into the adjusting spindle and tighten.
Screw the spindle into the pull rod extension.
