The vibration control properties of rubber bonded
cork have long been recognised in machine
installations. By combining the resilience of the cork
with a nitrile elastomeric compound a product has
been produced which gives excellent vibration
isolation characteristics with the benefit of long term
protection against creep and set.
Offered in various sheet sizes and thicknesses
Armacork is the ideal entry level material to offer a
cost effective and fast vibration control solution for
many industrial applications.
The introduction of Armacork between the machine
base and the supporting foundation effectively
prevents the transmission of structure borne
disturbance to the adjacent areas. Supplied in sheet
form allows the installation engineers to tailor the
pad area to suit the load conditions.
In many applications the degree of isolation can be
increased by simply mounting multiple layers of
Armacork to form a thicker isolation pad.
Composition
Armadillo Armacork Is manufactured with natural
cork granules blended with a medium duty neoprene
elastomer. This ensures the natural resilience of the cork particles can resist attack from oils, solvents and common place factory acids.
Further more the Armacork has been designed to give a long service life and has excellent resistance to long term creep and set. This means the pad substantially retains the original isolation performance over time.
Supplied in standard sheet sizes for on site cutting
or can be supplied die cut to request.
Range of 5 thicknesses to suit most applications.
Can be supplied in washers for effective isolation
installation. See Diagram.
Compressive strength 5.0kg/cms2 (0.50N/mm2)
High resistance to common oils and solvents.
Readily bonds into multiple layers for a range of
thickness'.
Prolongs the life of machinery.
Retains its properties for good service life.
Some practical aspects and considerations
when using Armadillo Armacork.
Compatible for a wide range of machine
types.
In most captive installations rebound
washers will be required. (see Diagram)
Can be used with contact adhesive to
avoid the need for anchor bolts.
Pad Area Selection Example.
On most machine tools the contact area of the
machine foot has been designed to limit the amount of
stress the machine exerts onto the support foundation.
For this reason it is most common to simply cut the
Armacork pad to suit the area of the support foot.
For confirmation of this the following calculation can
be carried out.
1 Take the total machine weight including maximum
weight work piece in Kg’s.
2 Measure the sizes of each mounting foot and work
out the area in square centimetres.
3 Add the total area of all the mounting points
together to give the total floor contact area.
4 Dividing the total machine mass by the total
number of square centimetres gives the working
stress the pads will be under on installation. This
will be a number of kg’s per square centimetres.
Armacork is designed to work at any working stress up
to a maximum of 5 Kg/cms (0.50N/mm2).
Beyond this additional spreader plates will be required
to reduce the working stress. Contact Armadillo VSC
for recommendation.
Technical Specifications in detail.
Working Temperature.
Continuous temperature exposure limits for long life are
120°C maximum and -30°C minimum.
Armadillo Armacork Tolerances:
Pad Length/Width (mm) 1.6
Pad Thickness (avg.) 5
Strength and Compression
The maximum compressive stress on the Armacork pad
should not exceed 5Kg per square centimetre.
Compression, Set and Creep
The initial deflection of Armacork will be up to 7% of
original thickness for maximum load. There may be a
further set of 2% over the next year.
