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HALFEN DEMU Lifting link
HALFEN DEMU Socket lifting system (Application safety)
To ensure maximum safety, the most critical safety points to observe when using the socket lifting system are summarized
below. The maximum allowable load on the socket lifting system is determined by the maximum allowable load of the
individual components: i.e. the maximum allowable load of the lifting link, the lifting anchor or the concrete.
Before use, always check the lifting link for damage, breaks in the wire and sign of corrosion. The number of
1.
visible wire breaks in the cable must not exceed 6 over a length of 6 times the cable diameter. (DIN EN 13414).
Any deformation or damage to the thread is not permitted. Check the ferule for any signs of cracks, wear and
tear or other stress. If in doubt, do not use the lifting link!
The socket lifting system
2.
must be inspected at least
once a year by a competent
expert.
Link angle
3.
Diagonal lifting
4.
Lifting
angle
º
≤ 45
Safe and reliable lifting system
5.
2
6311: The 6311 Lifting link must be inspected by an expert
2.1
at least once every four years. This test should include a
vertical lift with the lifting link subjected to 1.25 times its
maximum allowable load.
1240/1245: The lifting links must be inspected by an expert
2.2
at least once every four years. his check should be carried out
with an angle of 90 degrees with a maximum load 2 times the
maximum allowable load for the lifting link under 90 degrees.
The radius of the load-bearing surface of the crane hook
3.1
must be greater then the cable diameter.
The top angle in the link must not exceed 20 degrees.
See illustration.
≤ 20
º
Lifting link 6311: Diagonal lifting is limited to a
4.1
maximum of 45 degrees. (The angle between the centre axis
of the threaded sleeve and the cable must be less than or
equal to 45 degrees). There is no reduction of the allowable
load on the lifting link for angles up to 45 degrees.
Lifting link 1240/1245: The lifting link is suitable for
4.2
vertical lifting, diagonal lifting and tilt-up applications.
The maximum allowable load on the lifting link is
reduced for both diagonal lifting and tilt-up applications.
Lifting link 1240/1245: Creates a reliable and safe lifting
5.1
system when used with the 1988/1985 bolt anchor,
4010/3010 rod anchor, some versions of 995-DG and
1551-P and the 1980-P plate anchors.
Lifting link 6311: Creates a reliable and safe lifting
5.2
system when used with the 1988/1985 bolt anchor,
4010/3010 rod anchor, some versions of 995-DG and
1551-P and the 1980-P plate anchors.
Assembly Instructions
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