FITTINGS

Care & Use
General
1. Keep a register of all slings in use.
2. Ensure that the chain sling is precisely as ordered and all
components and chain is clearly marked.
3. Ensure that the manufacture and test certifi cate are in order.
4. Ensure that the identification and Working Load Limit on the
sling identification tag corresponds with the test information
on the certificate.
Care
1. Lightly oil chain and fi ttings before prolonged storage.
2. Never heat treat alloy chain or fittings.
3. Store in a clean and dry place.
Use
1. Always visually inspect chain and fittings and ensure that
they are free from damage or wear before use.
2. Ensure that chain is free from twists and is protected from
any sharp corners on loads.
3. Chain, components and links should articulate freely to the
adjacent links.
4. Latches on hooks, where present should operate freely and
seat properly without evidence of permanent distortion.
Inspection
1. Every chain link should be individually checked for
evidence of wear, twisting, cracks, breaks, gauges,
stretch, bend, weld splatter, discolouration from excessive
temperature and the opening of hooks, any worn link should
be measured to determine the degree of wear, which should
not exceed that allowed for by the manufacturer.
2. Oblong links and hooks should be inspected for any signs
of wear and for any signs of distortion, such as widening of
the hook throat opening.
3. Coupler should be inspected for any signs of wear at their
load bearing points, for excessive play of the load pin within
the body halves and for impaired rotation of the body halves
around the load pin. (Note – when reassembling a Coupler it
is recommended that a new pin and stud assembly be used).
4. Chain links or fittings found to have defects should be
clearly marked to indicate rejection and withdrawn from
service until properly repaired and proof tested. The results
of each inspection and repair should be entered on the chain
inspection record.
Working Load Limit
Do not use a chain in a manner that will exceed the WLL of the
chain for the particular conditions of use.
Hydrogen Embrittlement
Hydrogen embrittlement is a dangerous condition that should be
prevented.
In certain environments, such as where acid pickling or
cathodic cleaning is carried out, hydrogen embrittlement can
occur in steels that are quenched and tempered, because of the
absorption of atomic hydrogen generated at steel surfaces.
Effects of Hot Environments
The strength of all grades of chain is adversely affected by
excessively elevated temperatures. Where the temperatures
are likely to exceed 200°C, contact the manufacturer for the
required reduction in working load limit.
Low Temperature
The user should seek advice from the manufacturer where
chain is to be used at temperature colder than -10°C.
Heat Treatment
Chain in its fi nished condition should never be heat-treated.
Corrosive Environment
Grade T chain should never be used in acid or other corrosive
environments. Other grades may be suitable for some corrosive
environments, but the manufacturer or supplier should be
contacted to determine the best grade of chain for the particular
application.
Galvanising
Chains should never be hot-dip galvanised or electroplated,
except by the manufacturer. Hot-dip galvanising can reduce the
breaking load and WLL by 20 percent on some grades of chain.
Extending the Useful Life
The useful life of chains is considerable and may be easily
maximised by observing the following precautions:
(a) Care:
• Never heat or heat-treat chain.
• Lightly oil chain prior to prolonged storage.
• Store chain in clean dry places.
(b) Use:
• Ensure that chain is free of any significant damage or wear.
• Ensure that chain is evenly loaded in use.
• Ensure that chain is free of twists and knots and is protected
from any sharp corners when used.
• Avoid crushing chain.
Gunnebo Lifting – GrabiQ
The all-inclusive chain sling system for coupling, shortening and
lifting in Grade V(100).
Our GrabiQ sling system is designed to improve and make your
lifting as quick and easy as possible.
GrabiQ means for example;
• 25 % additional strength in the new Grade V(100) material.
• All top assemblies consist of no more than three
components.
• Shortening function of chain legs is integral with no extra
components.
One of the main advantages of the GrabiQ system is that the
work involved in connecting, adjusting and checking the lift
takes less time and can be carried out more easily.
The integral shortening function, for example, means that a
four-part sling which previously required up to thirteen different
top components now needs only three in the GrabiQ system.
The German Berufsgenossenschaften (BG) launched in
the beginning of 2004 a new specifi cation for Grade V(100)
components, Gunnebo has passed this new specifi cation and
was one of the fi rst companies in the world to do so.
Design With A Purpose
The Midgrab allows instant mounting, positioning and
shortening on any part of the chain.
Built in shortening function in the connector.
The option of shortening is always there.
03 - CHAIN & FITTINGS
With C-lok as terminal fi tting the sling can be altered between
choke hitch, basket hitch and leg extension with flattened links.
With the fl exibility of the GrabiQ system a number of different
lifting situations can be solved using the same GrabiQ sling.
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