Thiele TWN 0850/2 User manual

OPERATING INSTRUCTIONS
WELD-ON HOOKS TWN 0850/2
THIELE GmbH & Co. KG # Change indicator
www.thiele.de | [e-mail] 12229-A -
© All rights reserved EN 04.2022 1 | 5
Original in compliance with Machinery Directive 2006/42/EC.
1DESCRIPTION AND INTENDED USE
Weld-on hooks according to this THIELE works standard (TWN) are intended for
lifting and handling loads and are primarily welded onto earth-moving machinery,
e.g. shovels.
They are firmly connected to the load-bearing component by welding.
The weld-on hooks consist of a forged body and a spring-loaded safety latch.
The weld-on hooks are marked with working load limit, manufacturer's mark, CE
mark and traceability code and are painted in yellow or white.
Weld-on hooks may only be used
•within the permissible working load limit and attachment angle,
•within the permissible temperature limits,
•by trained and authorised persons,
•with mounted and functioning securing systems,
•with properly executed weld seams.
THIELE weld-on hooks are designed to withstand 20 000 dynamic load cycles at
maximum loading capacity. For higher workloads (e.g. multi-shift and automated
operations) the loading capacity is to be reduced accordingly.
Weld-on hooks meet the requirements of Machinery Directive 2006/42/EC and
have a design factor of 4 in relation to their working load limt (WLL).
Use for lashing or for the transport of persons is not permitted!
2SAFETY NOTES
Risk of injury!
Never walk or stay under lifted loads!
Make sure to use weld-on hooks and
hoisting means free from defects!
•Operators, fitters, and maintenance personnel must in particular observe the
operating instructions of the used vehicle, vehicle assembly and hoisting means,
documentations DGUV V 1, DGUV R 109-017 and DGUV I 209-013 issued by the
German Employers’ Liability Insurance Association, as well as the standard
specification DIN 15429.
•In the Federal Republic of Germany, the Operational Safety Ordinance
( etrSichV) has to be implemented and the Technical Rule for Industrial Safety
TR S 1201, in particular Annex 1, Chapter 2 "Special regulations for the use of
working equipment for lifting loads" must be observed.
•Outside the Federal Republic of Germany the specific provisions issued locally
in the country where the items are used must also be observed.
•The directions given in these operating instructions and specified
documentations relating to safety, assembly, operation, inspection, and
maintenance must be made available to the respective persons.
Make sure these operating instructions are available in a place near the product
during the time the equipment is used. Please contact the manufacturer if
replacements are needed. See also Chapter 10.
•When performing work make sure to wear your personal protective equipment!
•Improper assembly and use may cause personal injury and or damage to
property!
•Assembly and removal as well as inspection and maintenance must exclusively
be carried out by skilled and authorized persons.
•Structural changes (e.g. bending, detachment of parts, drilling) are not
permitted.
•Carry out a visual inspection before each use.
•Operators must carry out a visual inspection and, if necessary, a functional
test of the safety equipment before each use!
•Never put to use worn-out, bent or damaged weld-on hooks or hoisting means.
•Only lift loads the mass of which is less than or equal to the working load limit
of the weld-on hooks.
•Never expose weld-on hooks to loads exceeding the specified working load
limits!
•Do not use force when mounting/positioning the weld-on hooks or hoisting
means.
•Check that the load can withstand the forces including proof forces to be
applied without deformation.
•Do not twist or knot the chains together.
•Avoid sharp edges. Use edge protectors or reduce the working load limit by
20 %.
•Only lift loads that are free to move and are not fastened or anchored.
•Do not apply bending stress to chain links and components.
•Shortening of chain sling legs is only permitted with approved shortening
elements.
•Do not start lifting before you have made sure the load has been correctly
attached.
•Make sure no one including you (operator) is in the way of the moving load
(hazard area)!
•During lifting/hoisting make sure your hands or other body parts do not come
into contact with hoisting means.
•Remove hoisting means only by hand.
•Avoid impacts, e.g. due to abruptly lifting loads with chain in slack condition.
•Never move a suspended load over persons.
•Never cause suspended loads to swing.
•Always monitor a suspended load.
•Put the load only down in places/sites where it can be safely deposited.
•Do not catch hoisting means under the load.
•Operation without functioning safety devices is not permitted!
•In the event of doubts about the use, inspection, maintenance or similar things
contact your safety officer or the manufacturer.
THIELE will not be responsible for damage caused through non-observance of
the instructions, rules, standards and notes indicated!
Working under the influence of drugs, medications impairing the sense and or
alcohol (including residual alcohol) is strictly forbidden!
3COMMISSIONING
Prior to using the components for the first time make sure that
•the components comply with the order and have not been damaged,
•test certificate, declaration of conformity and operating instructions are at
hand,
•markings correspond with what is specified in the documentation,
•inspection deadlines and the qualified persons for examinations are
determined,
•visibility and functional testing are carried out and documented,
•documentations are safely kept in an orderly manner.
Dispose of the packing in an environmentally compatible way according to local
rules.

OPERATING INSTRUCTIONS
WELD-ON HOOKS TWN 0850/2
THIELE GmbH & Co. KG # Change indicator
www.thiele.de | [e-mail] 12229-A -
© All rights reserved EN 04.2022 2 | 5
4TECHNICAL DATA
Nominal
size
Working
load
limit
Article no.
Dimensions [mm]
(without tolerances) Mass
[t] A B C D E G H [kg]
GH 1 1,0 F32770 108 72 19 78 26 25 28 0,5
GH 2 2,0 F32771 113 91 20 83 34 33 28 0,7
GH 3 3,0 F32772 128 105 26 105 34 33 32 1,1
GH 5 5,0 F32773 166 138 28 149 44 43 45 2,4
GH 8 8,0 F32774 173 145 41 148 51 43 52 3,3
GH 10 10,0 F32775 227 178 46 197 66 60 61 6,4
5WELDING INSTRUCTIONS
5.1 General
Material of weld-on hooks: similar 1.6541, heat treated
Material of weld-on joint: C22, S235, S355 or similar
The following general welding instructions must be observed:
•EN ISO 2560 Welding consumables – Covered electrodes for manual arc
Welding of non-alloy and fine grain steel
• EN ISO 14341 Welding consumables – Wire electrodes and weld
deposits for gas shield metal arc welding of non-alloy
and fine grain steel
•ISO 3834-2 Quality requirements for fusion welding of metallic
materials
•EN 1011-1, 2 Welding – recommendations for welding of metallic
materials
•EN ISO 9606-1 Qualification testing of welders – fusion welding
•DVS 0702-1 / 0711 Factsheet - Requirements for operation and personnel
Welding is only permitted by trained and authorised personnel in accordance with
the qualification according to EN ISO 9606.
Please contact us if you have any questions about the welding parameters.
Sketch:
5.2 reparation activities
Make sure that the welding surface is even, dry, free of rust, paint and impurities
and suitable for welding (C-content ≤ 0.30 %). Select the welding location in such
a way that the forces to be applied can be absorbed by the component with
sufficient safety and without deformations.
5.3 Mounting conditions
Position the weld-on hooks in a way,
•that no danger areas (crushing points, shearing points, rotating parts) are
created,
•that the forces to be applied can be absorbed by the component without
deformations and that inadmissible stresses, e.g. due to off-centre load
application, are avoided,
•that the forces to be applied can be absorbed with sufficient safety (at least 4
times in the major load direction, at least 2.5 times perpendicularly thereto) by
the welding location for all intended load directions,
•that the hoisting means to be suspended in the weld-on hooks are not deflected
by other components during subsequent operation,
•that the load is applied in the bottom of the hook and that the direction of
loading is as parallel as possible to the longitudinal axis of the hook,
•that damage to hoisting means, e.g. by sharp edges, is avoided,
•that the weld-on hooks can be reached easily and without obstruction for
attaching and detaching, even when set down,
•that an unintentional loosening of the hoisting means is avoided,
•that there are no obstructions caused by hooking or getting stuck, both during
excavator and hoist operations.
Observe the welding instructions given.
The weld-on hooks must be inspected by a competent person after welding and
before first use. This inspection must be documented.
5.4 Welding seam dimensions
The weld seam must be led completely all around the weld-on hook .
Nominal
size
Min.
welding
thickness
a
Welding
dimension
m
[t]
[mm]
[mm]
GH 1 5 7
GH 2 7 9
GH 3 7 9
GH 5 9 13
GH 8 10 14
GH 10 12 16
Temper pass
Stringer pass
Wel
-
on hook
Weld
-
on joint
(Observe minimum
thickness!)

OPERATING INSTRUCTIONS
WELD-ON HOOKS TWN 0850/2
THIELE GmbH & Co. KG # Change indicator
www.thiele.de | [e-mail] 12229-A -
© All rights reserved EN 04.2022 3 | 5
5.5 Welding process MAG
5.6 Welding process E-Hand
Welding process Metal active gas welding (MAG) EN ISO 9606-1; No. 135
Welding groove See sketch
Quality grade Root run: EN ISO 5817 - C
Final run: EN ISO 5817 - C
Wire electrode EN ISO 14341-A:2020: ISO 14341-A-G 46 4 M21 3Si1
Welding position EN ISO 9606-1: PA, P , PF
Preheating of parent metal max. 150 °C
Interpass temperature ≤ 400 °C
Postweld heat treatment 380 °C tempering and / or apply quenching and tempering layer technology
Pass Root run Final run Temper pass
Wire electrode diameter 1 mm 1,2 mm See root run or stringer pass
Welding current (=) 130 – 200 A 135 – 290 A See root run or stringer pass
Note: The quench and temper
layer must only be applied to the
weld metal. Contact with the base
metal must be avoided.
Electrode polarity (= +) (= +)
Voltage 19 – 25 V 19 – 32 V
Shield gas ISO 14175; M21 10 – 12 l/min 12 – 14 l/min
Kind of pass Stringer pass Stringer pass
Welding process Manual metal arc welding (MMA) EN ISO 9606-1; No. 111
Welding groove see sketch
Quality grade Root run: EN ISO 5817 - C
Final run: EN ISO 5817 - C
Wire electrode EN ISO 2560 A:2010: min. ISO 2560-A-E 38 4 42 H5
Re-drying of the electrode if necessary: 300–350 °C, min. 2 h or according to manufacturer's instructions
Welding position DIN EN ISO 9606-1: PA, P , PF
Preheating of parent metal max. 150 °C
Interpass temperature ≤ 400 °C
Postweld heat treatment 380 °C tempering and / or apply quenching and tempering layer technology
Pass Root run Final run Alternative final run Temper pass
Wire electrode diameter 2,5 mm 3,2 mm 4,0 mm See root run or stringer pass
Welding current (=) 80 – 110 A 100 – 140 A 130 – 180 A See root run or stringer pass
Note: The quench and temper layer
must only be applied to the weld
metal. Contact with the base metal
must be avoided.
Electrode polarity (= +) (= +) (= +)
Voltage - - -
Shield gas ISO 14175; M21 - - -
Kind of pass Stringer pass Stringer pass Stringer pass

OPERATING INSTRUCTIONS
WELD-ON HOOKS TWN 0850/2
THIELE GmbH & Co. KG # Change indicator
www.thiele.de | [e-mail] 12229-A -
© All rights reserved EN 04.2022 4 | 5
5.7 Miscellaneous
•Minimum notched-bar impact strength values of ISO-V specimens KV = 27 J
at -40 °C (z. . S355J4G3 or S355NL, EN 10025).
•When selecting material grades other than those listed above please contact
the base material and filler metal manufacturers for information.
•The responsible welding supervisor must make sure the welding current is
correctly adjusted to suit the given welding position. The qualification must be
in accordance with EN ISO 14731.
•Check the weld for cracks, inclusions and blowholes.
6OPERATING
6.1 General
The safety latch must always engage form-fittingly with the tip of the hook to
ensure a stable fit. Removal of the safety latch is not permitted.
Hoisting means must always be able to move freely in the hook jaw.
6.2 Temperature influence
The operating temperature range is -40 °C to +200 °C.
After heating above the maximum temperature for use, the weld-on hooks must
no longer be put into operation.
6.3 Load directions
Permissible load directions are shown in the following sketches:
6.4 Environmental influence
Use in environments with acids, aggressive or corrosive chemicals or their fumes
is not permitted.
Hot-dip galvanising or galvanic treatments are not permitted.
7TESTING, MAINTENANCE, DISPOSAL
7.1 General
Inspections and maintenance must be arranged for by the owner!
Inspection deadlines shall be determined by the owner!
Inspections must be carried out and documented by competent persons regularly
but at least once a year, or more frequently if the weld-on hooks are in heavy-duty
service. After three years at the latest they must additionally be examined for
cracks. A load test shall never be considered a substitute for this examination.
The results of the inspection shall be entered into a register (DGUV I 209-062 or
DGUV I 209-063) to be prepared at first use. The register will show characteristic
data as well as identity details.
Immediately stop using weld-on hooks that show the following defects:
•deformation, elogation or fracture,
•cuts, notches, cracks, incipient cracks, pinching,
•heavy wear in the hook jaw,
•missing or jamming safety latch,
•severe corrosion,
•missing or illegible identification/marking.
7.2 Maintenace
Maintenance work may only be carried out by trained and competent persons!
Minor cracks and notches can be removed by careful grinding, observing the
maximum cross-section reduction of 10 % as well as the avoidance of notches.
Document all maintenance activities.
7.3 Changing the safety latch
Disassembly is carried out by driving out the dowel pin.
The assembly is done by positioning the spring and the safety latch and
hammering in the thicker dowel pin. The thin dowel pin is then mounted. Make
sure that its slot is positioned opposite the slot position of the thicker dowel pin.
Check the proper function of the safety latch.
7.4 Inspection service
THIELE offers inspection, maintenance and repair services by trained and
competent personnel.
7.5 Disposal
All components and accessories of steel taken out of service are to be scrapped in
line with local regulations and provisions.
8SPARE PARTS
Only use original spare parts.
Spare parts sets include safety latch, spring and dowel pin.
Nominal
size
Article no.
Spare part sets
GH 1 Z04496
GH 2 Z04496
GH 3 Z04496
GH 5 Z10614
GH 8 Z10614
GH 10 Z05842
9STORAGE
Store weld-on hooks dry and protected against corrosion at temperatures
between 0 °C and +40 °C.
10 THIELE OPERATING AND MOUNTING INSTRUCTIONS
Current operating and assembly instructions are available as a PDF download on
the THIELE homepage.
11 IMPRESSUM
THIELE GmbH & Co. KG
Werkstrasse 3
58640 Iserlohn, Germany
Tel.: [phone]

OPERATING INSTRUCTIONS
WELD-ON HOOKS TWN 0850/2
THIELE GmbH & Co. KG # Change indicator
www.thiele.de | [e-mail] 12229-A -
© All rights reserved EN 04.2022 5 | 5
12 DECLARATION OF CONFORMITY
EC Declaration of conformity
acc. to Machinery Directive 2006/42/EC, Annex II A for a machine
THIELE GmbH & Co. KG herewith declares as manufacturer that
WELD-ON HOOKS TWN 0850 2
are in compliance with the applicable provisions of the EC Machinery Directive
2006/42/EC.
The following harmonized standards have been observed:
•EN 12100 Safety of machinery – General principles for design –
Risk assessment and risk reduction
This declaration/statement is not meant to warrant any product properties.
Safety notes and instructions pertinent to the products must be observed.
Responsible for documentation
Rene Völz (Head of QA and EP), Tel.: [phone]
Iserlohn am 28
th
April 2022
Dr. Michael Hartmann (Managing director)