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Rods
Standard our webs are equipped
with rods of spring steel class C
(DIN 17228). However we can also
mount rods of hardened Boron
steel, stainless steel or glass fibre
reinforced polyester. After consultation
with you, we can also use
other materials so that the produced
web will meet your expectations
as good as possible.
Without using rod coverings we can
create gaps with a minimum of
5mm. By using rod coverings we
can reduce the gaps to 2mm.
GA |
Holes distance |
SM |
Stokmaat |
Stokmaat
In determining the correct width
of the sieve web, it is important
that the rods have the correct “stokmaat”. This is the distance
between the two outside rivet
holes, C.T.C. When ordering
loose rivet rods it is important
that you mention the stokmaat
as well as the distance between
the holes in one end. Without
further notice, we assume this
distance to be 20mm in 50mm
wide traction belts and 32mm in
60 or 75mm wide traction belts.
On request we can also make
these distances 24 or 30mm.
Standard rivet rods are available
in diameters 6, 7, 8, 9, 10, 11, 12, 13
and 15mm.
To increase the conveying capacity
of a sieve web, we can equip
webs with cranked rods. These
cranks are available in various
hights, both up and down. (An
often used construction is 2
down cranked rods, followed by
1 straight rod.)
To protect the product from
damaging or to minimise the
gap, rods can be covered.
Kinds of steel
For use in rough circumstances,
for instance in stone separators,
we can make the rods out of
stronger materials. Here we use
special steel (spring steel, class
super C) or hardened Boron
steel.
Special steel is harder and
tougher than spring steel class C.
Further it has all the properties
of regular spring steel. Special
steel is available in the diameters
10, 11 and 12mm.
Hardened boron steel is even
harden and tougher than special
steel. An advantage of boron
steel is that it can be welded.
After welding, the material must
be hardened, which makes it
impossible to weld on an existing
web. Boron steel is available
in the diameters 10, 11, 12 and
13mm.
Stainless steel is often used in
water. All metals used in the
sieve web are then of stainless
steel. It is not possible to make a
centre flattening in a stainless
steel rod. If a centre belt is
required, attachment onto the
belt will be made with centre
clips.
To save weight we can use rods
out of glass fibre reinforced
polyester. The glass fibres provide
great tensile strength. A
sieve web with these rods can
weigh up to 50% less than a
web with steel rods. Another
advantage is that these rods
don't rust.
Polyester rods are available in
the diameters 6, 8 and 10mm.
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