3
User Manual
General Information
Reference should be made to relevant standards and other statutory
regulations. Inspections must be carried out only by people who possess
sufficient knowledge.
Before installation and before every use, visually inspect the lifting points,
paying particular attention to any evidence of corrosion, wear, weld cracks
or deformations. Please ensure compatibility of bolt thread and tapped
hole.
The material construction, to which the lifting point will be attached,
should be of adequate strength to withstand forces during lifting without
deformation.
Minimum thread depth requirements (d refers to bolt diameter):
• 1 x d for steel (Yield limit >200MPa).
• 1.25 x d for cast iron (Yield limit >200MPa).
• 2.5 x d for aluminum alloy.
• For other metal alloys and other base materials, please consult your
Gunnebo Industries distributor.
General assembly instructions:
• The surface facing around the thread hole shall be flat (plane), clear of
paint and dirt, and smooth to ensure a perfect flush contact with the
shoulder surface of the lifting point.
Conditions for symmetric lifts with 1, 2, 3 or 4 legs
• For three and four leg lifts, the lifting points should be arranged
symmetrically around the center of gravity in the same plane if
possible.
• Load Symmetry: The working load limit for Gunnebo Industries lifting
points is based on symmetrical loading.
• The lifting points must be positioned on the load in such a way that
movement is avoided during lifting.
• For single leg lifts, the lifting point should be vertically above the
center of gravity of the load.
• For two leg lifts, the lifting points must be equidistant to or above the
center of gravity of the load.
Conditions for asymmetric lifts with 2, 3 or 4 legs
For unequally loaded chain legs we recommend that the Working Load
Limit is determined as follows:
• 2-leg slings calculated as the corresponding 1-leg sling.
• 3 and 4-leg slings calculated as the corresponding 1-leg sling*.
* (If 2 legs with full certainty are carrying the major part of the load, the
working load limit can be calculated as for the corresponding 2-leg sling.)
