22
MAY-JUNE 2014
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DEMOLITION
ATTACHMENTS
Genesis further extends
XT shear range
Genesis Attachments has announced two further additions to its XT range of mobile
shears in the shape of the GXT 335 and the GXT 995, bringing the total number of
models available in the range to 12. The two new shears are positioned at either end
of the size range of the existing attachments.
The smaller of the two, the GXT 335, is available in two variants – non-rotating and
rotating. It weighs 29.5 kg (6,500 lb), has a jaw opening of 920 mm (23 inch), a jaw
depth of 104 mm and can be carried boom mounted on carriers from 12 tonnes and
when stick mounted from 27 tonnes. Its rotating counterpart weighs in a4 3,318 kg
(7,300 lb) and its jaw specs correspond to the above. It can be used boom mounted
on carriers from 16.8 tonnes and when stick mounted from 36.4 tonnes.
Now the largest in the range, the GXR 995 is also available in non-rotating and
rotating variants, weighing in at 8,182 kg (18,000 lb), with a jaw opening of 990.6
mm (39 inch) and jaw depth of 1067 mm (42 inch). It can be used boom mounted on
36 tonne carriers upwards and when stick mounted on 77 tonne machines upwards.
The rotating version shares the same jaw dimensions, weighs 9,090 kg (20,000 lb)
and can be used boom mounted on 45.5 tonne carriers and above and when stick
mounted on 82 tonne machines and above.
According to Genesis, further XT shear models are under development that will
eventually see the range span the 9 to 114 tonne carrier range.
Josef Martin GmbH reports that its M Quick quick
coupling system is proving popular with customers
weighing 18-24 tonnes and 23-36 tonnes
respectively. Further models will be added to
the Series in due course.
Each base housing can be used with six
different jaw sets that all feature replaceable
wear parts that can be changed in the field
rather than surface welded to the jaw. The jaw
sets are Concrete Cutter (CC), Demolition
(D), Pulveriser (P), Shear (S), Universal (U)
and Tank Shear (TS).
According to Cat a new patent pending
jaw locking system allows these sets to be
switched out in 10 minutes as against the 25
minutes for the previous series. A new booster
design that is activated when the jaws meet
resistance has been developed around a speed
valve and new smaller cylinder that halves
the jaw open/close time. Cat said that the
cutting force has been increased by up to 6%
to generate increased production of between
10% with the steel cutting CC jaw and 50%
with the demolition D jaw.
Rivners AB has taken delivery of a new
Trevi Benne MK 70, supplied via Swedish
dealer Andersen Contractor, based in
Õrsundbro, just outside Uppsala. Said to
be the largest multiprocessor currently
available, the new attachment was delivered
with pulveriser and concrete shear jaw sets.
The MK 70 weighs in at 9,000 kg (19,800 lb)
and requires a carrier from 75 to 100 tonnes.
When fitted with its scrap shear or concrete
shear, the MK 70 provides a cutting force of
1,100 tonnes, while the pulveriser jaw delivers
490 tonnes of force.
A jaw changeover time of five minutes is
claimed for the MK 70 and it is available with
three other sets in addition to the two taken
by Rivners. These consist of the concrete
shear set mentioned above, a crusher jaw and
a special pulveriser set that features dual steel
cutting blades that cuts the rebar within the
concrete being crushed.
Rivners immediately put its new tool
to work on a contract in the middle of the
Swedish capital city of Stockholm. This is
the demolition of the former headquarters
building of AB Atomenergi in the Liljeholmen
district of the city. This former industrial
district of the city is increasingly being
redeveloped for residential use.
Originally built in 1964 as the
headquarters of the state AB Atomenergi
(Atomic Energy), Nutek House has served as
the home for Nutek–Tillväxtverket (Swedish
Agency for Economic and Regional Growth)
since AB Atomenergy ceased operation.
Its demolition is being carried out to make
way for a number of residential buildings that
will house 225 apartments.
Two new Hydro Magnets, aimed at the
recycling, scrap and demolition sectors, have
been launched by Atlas Copco to complement
its range of hydraulic attachments. Each
model is available in two versions as either a
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