Technical Information
1.1
Cable Ties and Fixings
Te c h n i c a l I n f o r m a t i o n
Introduction to the main locking technologies used for cable ties
HellermannTyton offers a wide range of cable ties for use in different applications. By constantly refining our products and satisfying the
ever-changing demands of the market, various locking technologies have been developed. Below you will find a brief overview of three
most common locking technologies and their characteristics.
Cable ties with plastic pawls
This technology is used in 90% of all
polyamide (PA) cable ties applied by
HellermannTyton. In order to cover a variety
of applications, there are different variants
of this system, for example: releasable
versions, in-line versions, open head
versions.These are one-piece cable ties, that
is the pawl is moulded as an integral part of
the cable tie, thereby building in inherent
strengths.
Locking technology
Positive locking is achieved by engaging the
pawl with the strap serrations. This allows
the cable tie to perform to the published
minimum tensile strength, that is the
loading that the cable tie can hold under
application (see page 35).
34
KR series cable ties
This cable tie is distinguished by its smooth
strap and unique locking mechanism. With
the KR series the chamfered head achieves
an especially firm fit around the bundled
material.
Locking technology
This patented lock technology takes advantage
of the excellent deformation properties of
polyamide (PA). Here, the glass fibrereinforced (GRP) locking pin (yellow) is
forced into the strap by the use of an
application tool - either the KR6/8 or
KR8PNSE (see page 105). The strap is
deformed into the head of the tie by the
application of the pin, thereby locking the
cable tie in position and allowing for the
bundling of heavy loads.
Date of issue: April 2011
MBT series of cable ties
Made of stainless steel grades 304 or 316,
the MBT range of cable ties have no serrations
on the strap and are threaded parallel through
the head, gliding under a metal ball-bearing
locking mechanism. By using the MK9SST
(see page 569) application tool the cable tie
is tensioned and the strap cut to a flush finish.
Locking technology
The strap is locked into the head by means
of the small ball-bearing. The ball locks into
the small end of the wedged shaped
housing, forming a positive locking with the
strap. This cable tie is not suitable for rigid
objects. Retraction of the ball-bearing
(see drawing) is required into the small end
of the wedged shaped housing to allow for
a positive locking of the strap and also to
make a flush cut of the end of the strap.
Retraction, therefore, cannot take place
with the bundling of inflexible materials.
To bundle rigid objects LFPC channel
(see page 120) should be laid as buffer
between strap and bundled material to
compensate for this retraction. This locking
technology allows for minimum tensile
strengths of up to 5400 Newton.
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