Calculation Example; Welding The Flange - SAF 50S15 Manual De Instrucciones

5 Installation
or OFF ROADuse, please consult customer services beforehand. When
using several coupling devices and components, the one with the lowest
D-value should be observed.

Calculation example

The kingpin should be mounted on an articulated trailer with a permitted
total weight of 31 t, which is pulled by a tractor with a permitted total
weight of 21 t. The fifth wheel vertical load has a weight of 14 t.
Sought: D-value:
The calculated D-value is 100.8 kN. The
kingpin to be used must therefore have a
D-value of at least 100.8 kN.

5.3 Welding the flange

Careful!
• The welding work must only be carried out by
• The fifth wheel kingpins must be installed flat and in
• The pins must be protected against welding splatter.
Welding procedure
When welding the mounting flange, the following welding procedures
and weld materials are permitted:
• Welding procedure
– MAG C (135)
• Protective gas
– M21 or 92%Ar + 8% CO
• Weld material
– according to EN ISO 14341: 2008
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XL-KP11695BM-en-DE Rev. A · 11.2013 · Errors and changes excluded · © SAF–HOLLAND
authorised trained personnel.
the centre, the angled seat must also be checked.
Fig. 5 · D-value calculation example
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KP-0008