MOUNTING INSTRUCTIONS
HOOKS GRADES 80 AND 100
Sling hooks
Sling hooks
with clevis
with eye
TWN 1340/1
TWN 0855/1
TWN 1840/1
TWN 0858/1
TWN 1841/1
The following mounting instructions must always be
followed to avoid the risk of personal injury or property
Do not use a hook before reading these mounting
instructions.
1. ABOUT THIS INSTRUCTION
These mounting instructions describes in particular how sling
hooks according to TWN 1340/1, TWN 1840/1, TWN 0855/1,
TWN 0858/1, TWN1841/1, TWN 0859, TWN 0856, TWN 1856,
TWN 0854, TWN 0887, TWN 0889 (TWN = THIELE Works
Standard) are to be safely used for lifting purposes.
The instruction applies analogously to components of identical
design.
To comply with these instructions is essential to help avoid
hazards and increases the reliability and service life of the hooks.
DANGER!
situation which, if not avoided, will
result in death or serious injury.
WARNING! Indicates a hazardous
situation which, if not avoided, could
result in death or serious injury.
CAUTION!
situation which, if not avoided, could
result in minor or moderate injury.
NOTICE! Is used to address practices
not related to physical injury.
Safety Instructions signs indicate
specific safety-related instructions or
procedures.
Chains and accessories marked with the American nominal size
7/32" already corresponded to European nominal size 6 mm.
In order to achieve a better match, the previous nominal size
7/32" is now converted to the new nominal size 1/4".
The working load limits have now also been adjusted.
THIELE GmbH & Co. KG
www.thiele.de | info@thiele.de
© All rights reserved.
Foundry
Swivel
Lifting hook
hooks
hooks
for engines
TWN 0859
TWN 0854
TWN 0889
TWN 0856
TWN 0887
TWN 1856
damage.
Indicates
a
hazardous
Indicates
a
hazardous
DEFINITIONS
Clevis
A U-shaped fitting with pin.
Working load limit (WLL)
The maximum load which a hook is designed to support without
shock-loading.
Read ASME B30.10 „Hooks".
2. BASIC SAFETY REQUIREMENTS
To prevent the risk of injury never walk or stay under lifted
The working load limit must not be exceeded!
Hooks as well as lifting and attachment means to be used
Working under the influence of drugs, medications
impairing the sense and/or alcohol is strictly forbidden!
• Operators, fitters and maintenance personnel must in
particular observe the mounting and operating instructions
of the chain slings into which the hooks are to be installed as
well
as
standards
Specification for Grade 80 and Grade 100 Alloy Steel Chain
Slings for Overhead Lifting), ASTM A 952/A 952 M (Standard
Specification for Forged Grade 80 and Grade 100 Steel Lifting
Components and Welded Attachment Links), ISO 3056 (Non-
calibrated round steel link lifting chain and chain slings; Use
and maintenance), ISO 7593 (Chain slings assembled by
methods other than welding; Grade T(8)) and ISO 4778
(Round steel short link chains for lifting purposes – Chains
slings of welded construction – Grade 8), ISO 1837 Lifting
hooks - Nomenclature.
• The specific safety and operating regulations and standards
issued locally in the country where the items are used must
be observed.
• During operation work, wear your personal protective
equipment!
B11090-C
US 02.2022
loads!
must be free from defects!
ASTM A 906/A 906 M
#
(Standard
# change indicator
replaces B11090-B
1 | 7
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