Instructions for safe use and avoidance of danger.
Keep this safety note/manufacturer's declaration for the entire utilisation time.
• Application is only allowed for slinging and lifting loads.
• It is to be made sure that the safe working loads indicated on the attached tags are not exceeded.
• Changes in the safe working load in dependence of the temperature t are as follows:
Use within the admissible temperature range means no permanent reduction of the safe
working loads after return to room temperature.
• Use in acids and alkalis or application in acid or alkaline vapours is only admissible if
the material is resistant to corrosion.
• Any self-effected modifications, such as exchange of components, thermal or galvanic treatment,
will invalidate the product liability of Ketten Wälder GmbH.
• In the case of particularly endangering conditions (lifting of persons; caustic substances;
liquid metals; etc.), the degree of endangerment is to be assessed by a competent person
and the safe working load is to be adjusted accordingly.
• On continuous operation, i. e. at automated production lines with high work cycles and often repeated
similar movements and ways of transportation, a high dynamic strain (=> 20.000 stress cycles) occur.
There is the risk of damage of the products due to the high dynamic strain. In these cases it is essential
to reduce the tension i. e. corresponding to mechanism group 1Bm M3 acc. to DIN EN 818-7 by using a
higher nominal thickness or size.
Prior to the first application, it is to be made sure that
• the chain sling delivered is exactly the one that was ordered,
• the test certificate has been provided,
• the chain sling is complete with markings and indications as to the safe working load and
that those data are consistent with the test certificate,
• all the details concerning the chain sling have been included in the card index.
Prior to each use
the chain has to be visually inspected to check if there is any apparent damage or sign of wear.
• Any particular specifications regarding the load have to be observed.
• Before starting the lifting operation, it has to be made sure that the load is freely
movable and that it is not anchored or fixed.
• The mass of the load must be known. If not, it can be taken from documents or
shall be determined by calculation.
• The location of the centre of gravity should be determined when choosing the sling
points and should meet the following conditions:
• To ensure the stability of the load when using multi-leg chain slings, the sling angle ß should be > 15°
and should be within the indicated range. It must, however, not exceed 60° (see example in Fig. 1).
1. Choosing
the appropriate
chain sling:
2. Visual inspection:
3. Handling
of the load:
Safety Notes
2
General Safety Notes for CROMOX® Chain Slings (Grade 50/60)
d
chain slings
lifting point
to be perpendicular over the centre of gravity
for both legs to be over the centre of gravity
if ever possible to be evenly distributed over a plane about the centre
of gravity and located over the centre of gravity
single-leg
double-leg
3- and 4-leg
-40°C to + 250°C
over 250°C to 350°C*
over 350°C to 450°C
100 %
75 %
50 %
W.L.L.
*1.4462 max 350°C allowed
