2018 International Forest Industries December 2017 January 2018 | Page 88

INNOVATION
It is a crane with
significant differences
compared to its
predecessor RK 85
Filip Wirbladh, designer
at Rottne Industri
The new jib arm crane for Rottne F10 and Rottne F11 offers 20 % more lifting force than its predecessor
20% stronger crane
for Rottne F10 and F11
Rottne introduces the RK 105 – a genuine
innovation on the crane side for the forwarders
Rottne F10 and Rottne F11
Stronger
lifting arm
B
ehind the idea of the new
knuckle boom crane for
Rottne’s forwarders F10D and
F11D which, among others, was
developed based on a desire of a
stronger crane, lies an innovative
and well-thought-out strategy that
has resulted in a completely new
and improved product.
“The three main parts that have
been redesigned compared with
the old crane are: the mast, the lift
cylinder and lifting arm. In brief,
it is a completely new crane with
increased strength. Above all, it is
different approach to the assembly
process,” says Filip.
The new crane is reinforced in
order to give greater lifting force.
The development work at the
factory in Rottne has resulted in RK
105 having a lifting torque of 105
kNm (kilonewton meter). This is
compared to approximately 87 kNm
on the earlier model. The lifting
angle has also been increased by
about five degrees.
“We worked hard to reduce
the stresses in the welds and have
New type of self-
aligning bearing
New cylinder
mounts
Stronger
mast
New type of self-
aligning bearing
improved the lifting force with a full
20 per cent,” says Filip.
The new RK 105 will be
mounted as the standard crane on
all F10D and F11D models delivered
to customers from Rottne’s
factory around the turn of the year
2017/2018 and onward.
“It is pleasing to be able to
present an improvement to the
crane while at the same time
meeting demands on a product
that our customers have requested
on these particular models,” says
Jörgen Ivarsson, Nordic Sales
Manager at Rottne, and concludes:
“We can now offer both these
forwarders with a stronger and
improved crane, which not only
increases the lifting capacity but
also the performance of the entire
machine.”
Changes:
• Stronger mast
• New type of self-aligning bearing
• New cylinder mounts
• Stronger lifting arm
International Forest Industries | DECEMBER 2017 / JANUARY 2018 IBC