Page 117 - Green Pin Product Catalog

Instructions for use

1) Open spelter sockets – closed spelter sockets
In the past melted zinc was poured into the sockets to fix the steel wire rope; nowadays resins are used
for this purpose. LIFTING SLING FITTINGS

Figure 1

• brooming is done after the wire rope has been placed into the socket;
• when using resins always exactly follow the instructions given by the manufacturer carefully;
• socketing must be done by specialists in a certified sling shop.

2) Open wedge sockets FOR WIRE ROPE
®
The wedge and body act as a vice which grips the wire rope and locks it in place. Green Pin wedge sockets
may be used within the range of wire rope diameters as shown in the table further on in the catalogue.

3 .1

Figure 2

When using open wedge sockets the following precautions should be taken:
• before use always inspect the socket, the wedge and the pin;
• use only with standard 6-8 strand wire rope;
• in case of use with non-rotating wire rope there is a risk of core slippage or loss of rope lay. Instruction
from the wire rope manufacturer must be followed to prevent this by; for example welding, brazing or
seizing the dead end before introduction in the socket. The minimum tail length is 20 times the wire rope
diameter. Furthermore, the wire rope construction must be checked for suitability of bending around the
radius of the wedge. Additional measures might be necessary to prevent distortion;
• always be sure that socket and wedge have the correct size for the wire rope diameter;
• the loaded part of the steel wire rope should be mounted in the centre line of the pin;
• when installing the wire rope, always pre-load the wedge with the wire rope in place;
• never weld the tail; the tail should have a length of at least 6 times the wire rope diameter with
a minimum of 150 mm. Secure the dead end of the rope with a wire rope clip as shown in figure 3;
• before applying the first load always use a hammer to seat the wedge and rope into the socket as deep
as possible;
• check the assembly regularly; re-tighten or re-position if necessary;
• never side load a wedge socket as it has not been designed for that purpose;
• load may slip if the connection is not properly installed;
• the efficiency of a wire rope - wedge socket connection is 80% of the minimum breaking load
of the wire, but is limited to the minimum breaking load of the socket;
• only use the original wedge supplied by the manufacturer of the socket and be sure it is suitable for
the diameter of the rope used;
• never use a wedge from any other supplier than the original socket supplier as the dimensions will
not match.

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