Lock-Up Feature (Optional)
Units equipped with lock-up are recommended to use an air supply from 60 to 120
psi (4.1 to 8.3 bar). In severe locking conditions, the air supply can be
adjusted to a maximum of 120 psi (8.3 bar). Lock-up is operated by
applying air to the desired fitting (lock or unlock). The opposite
fitting must be exhausted for the cylinder to operate correctly. The unit
is recommended to be locked in the vertical position. This creates a
normal locking condition. A severe locking condition occurs when the unit
is locked in the horizontal position under a load. In such a condition,
the load is being lifted by the lock-up mechanism (see figure below).
Please note that severe locking conditions will create above normal wear on the
lock-up screw bushings. For the recommended lubrication periods for
normal and severe locking conditions, see Section 7 - Maintenance of
the Compensator Installation and Operation Manual.
Using a flow control valve to reduce the acceleration of the lock-up screw into
the tool-side (bottom) plate will help to reduce wear on the lock-up screw
bushing.
|
|
|
|
|