PRE COMPRESSED

“PSD” series are very low frequency and very high Viscous Damping Units fitted with a pre- compression device to facilitate adjustment at site and easy installation/removal.

The Isolator can be pre- compressed to its loaded height before installation using Jacks if required, and held in precompression by the Tie Bars. Once the equipment is installed, pre-compression is released by loosening the Tie-Bars.
Top and/or Bottom Friction pads for obviating the need of anchoring bolting Also available for bolting to the floor and/or supported equipment.

Load capacity up to 25000 Kgs
Resonance frequency: 3 Hz to 5 Hz
Damping: 8%-15% of critical
High radial stiffness to axial stiffness ratio

APPLICATIONS

PASSIVE ISOLATION of major civil engineering structures such as:

ANECHOIC CHAMBERS
BUILDINGS
LABORATORIES
METROLOGY CHAMBERS
SLABS
ETC.

ACTIVE ISOLATION of large size rotating machines with or without inertial block running at speeds down to 350 rpm and developing very high dynamic forces (unbalance, short-circuit, couples) such as

CENTRIFUGES
FORGING HAMMERS
COMPRESSORS
PUMPS
CRUSHERS
PRESSES
FANS
PRESSES
PILE-DRIVERS

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