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USER INSTRUCTIONS -
SHORTENING HOOKS GG, OG, OKF and GKL
Introduction
The shortening hooks GG, OG, OKF and GKL are intended for chain shortening
of chain slings to balance the load. Alternatively the hooks can be used as end
components to hook back to the chain to make a basket lift. The shortening
hook GKL (equipped with safety latch) is ideal also for Grade 8 chain lashing
combinations. Domestic statutory regulations regarding use and maintenance must
always be followed.
Use and assembly
GG Grade 10
Assembly with chain
1 Assemble chain, GG and load pin.
2 Fit the retaining pin.
3 Make sure the load pin and retaining pin are properly secured
Use
GG is symmetrical and therefore can be loaded from either side. GG have supporting
lugs on both side of the hook to prevent chain link deformation. Thanks to the
supporting lugs, no reduction of the working load limit is necessary. GG may only be
used with short link chain.
GG Grade 8
Assembly with chain
1 Assemble chain, GG and load pin.
2 Fit the retaining pins.
3 Make sure the load pin and retaining pins are properly secured.
Use
GG is symmetrical and therefore can be loaded from either side. GG has supporting
lugs on both side of the hook to prevent chain link deformation. Thanks to the
supporting lugs, no reduction of the working load limit is necessary. GG may only be
used with short link chain.
OG Grade 8
Assembly with G-link
1 Join OG together with the two G-link halves and the master link/chain.
2 Place the retaining bush between the G-link halves.
3 Insert the load pin and ensure that the load pin snaps into place.
Use
OG is symmetrical and therefore can be loaded from either side. OG has supporting
lugs on both side of the hook to prevent chain link deformation. Thanks to the
supporting lugs, no reduction of the working load limit is necessary. OG may only be
used with short link chain.
GKL Grade 8
Assembly with chain
1 Assemble chain, GKL and load pin.
2 Fit the retaining pins.
3 Make sure the load pin and retaining pins are properly secured.
Use
GKL gives excellent support and a straight loading of the shortened chain link. GKL is
equipped with a heavy duty recessed safety latch to prevent unintentional release of the
chain. Because GKL is asymmetrical it is important that the shortening and force direction is
made correctly according to the picture. Incorrect loading could result in bent links or even
failure.
OKF Grade 8
Assembly with G-link
1 Join OKF together with the two G-link halves and the masterlink/chain.
2 Place the retaining bush between the G-link halves.
3 Insert the load pin and ensure that the load pin snaps into place.
Assembly with Berglok (BL)
1 Assemble OKF, BL, chain and load pin.
2 Fit the BL retaining pins.
3 Make sure the load pin and retaining pins are properly secured.
Use
OKF gives full support to the shortened chain link. Because OKF is asymmetrical it is
important that the shortening nad force direction is made correctly according to the picture.
Incorrect loading could result in bent links or even failure. OKF is marked with "F" and an
arrow to show the correct side to be loaded.
Maintenance
Periodic thorough examination must be carried out at least every 12 months or more
frequently according to statutory regulations, type of use and past experience.
Overloaded chain slings must be taken out of service.
Chain and components including load pins which have been damaged, deformed,
elongated, bent or showing signs of cracks or gouges must be replaced. Carefully grind off
small cuts and burrs.
Check the function of hooks, safety latches, load pins and retaining pins/bushes and
replace when necessary.
Always use Gunnebo Lifting original spare parts.
GG G10
GG G8
OG G8
GKL G8
OKF G8
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