General Information; User´s Guide - Gunnebo Industries DLP Guia Del Usuario

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.
• The tapped hole depth must take into account the thread length and
the internal thread run-out in accordance with SS 1403.
Adjusting the bolt length
If the bolt length needs to be adjusted, the instructions below must be
followed:
• The bolt shall be cut in a cold saw or lathe. Since the bolt has been
heat treated and hardened, it is of the utmost importance that the
temperature is kept as low as possible when cutting.
• After cutting, check the shape of the threads nearest the cut with an
appropriately sized die. Bevel if necessary (there must not be any
burrs).
Nut and washer
The nut and washer must be the original equipment supplied from
Gunnebo Industrier to ensure the correct mechanical properties.
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.
3