Technical data

16
General Pointer and Facts
Jamming stress
Tensile stress
to small bending radius enough distance
Abrasion
enough distance
Modelled after DIN 20066: 2002-10
Installation Recommendations
Pulling on the ends of rolled hoses causes them
to build up a torsion stress and can subject them
to bending radii smaller than permissible.
Hose lines should be installed in such a manner
that they are free of tensile stress in all operational
states; similarly, jamming stress (i.e. axial compres-
sion along the length) on short lengths of hose is to
be avoided.
Axial compression due to incorrect installation or
space-reducing motion degrades the hose’s pressure
handling capability.
The expansion of straight runs of hose can lead to
their destruction.
Remedy: place elbow fi ttings at connecting
points
Do not permit straight runs of hose to be sub-
jected to a large range of motion, make such
hose connections in a U-shape.
False Right
Hoses are not to be twisted.
Remedy: Unroll the ring of hose rather than
pulling it off.
When connecting hose lines to moving parts,
hose length must be calculated such that the
hose’s smallest permissible bending radius is
not underrun in any possible position and that
the hose is not subjected to tensile stress, i.e.
pulling.