During actuation of the clamping device (clamping or releasing)
it must be ensured that a short ventilation time is maintained
between the switching processes. This ventilation time must last
at least 0.5 seconds, depending on the hose length. For this
purpose we recommend the use of a 4/3- or 5/3- way valve
(central position depressurized).
Pilot controlled check valve
The pilot-controlled check valve is an intrinsically sealed unit, and
comprises a valve body plus two locking pistons. Light
maintenance can be performed on it from the face side of the
chuck via a locking screw. The locking pistons of the valve unit
control the rate of the air that flows to and from the profile seals
through two air ducts. By changing the pressure of the air at the
profile seals, the air duct is vented into a cylinder chamber (relief
chamber) on one side. During this process, the compressed air is
rerouted from one cylinder chamber due to the valve housing
moving axially while the two individual locking/check pistons
execute only one stroke when locking their respective cylinder
chambers. As a result of this process, both O.D. and I.D. clamping
are possible throughout the valve system.
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