Thiele TWN 0797 User manual

MOUNTING INSTRUCTIONS
MASTER LINKS FOR 3- AND 4-LEG CHAIN SLINGS
GRADES 80 AND 100
THIELE GmbH & Co. KG
# Change indicator
www.thiele.de | [email protected]
B11089-A
replaces -
© All rights reserved.
US 01.2020
1 | 8
Master link assemblies
3- and 4-leg sling
Oversized master
link assemblies
Fixed size master
link assemblies
TAA / TAB
TWN 0797
TWN 1304
TWN 1315
TWN 1804
TWN 1815
TWN 0817
TWN 0810/4
TWN 0811/4
TWN 1810/4
The following Mounting Instructions must always be
followed to avoid the risk of personal injury or property
damage.
Do not use a master link for 3- and 4-leg chain slings before
reading these Mounting Instructions.
1. ABOUT THIS INSTRUCTION
This Mounting Instructions describe in particular how master
links for 3- and 4-leg chain slings according to several TWN
(TWN = THIELE Shop Standard) are to be safely used for lifting
purposes.
The instructions apply analogously to components of identical
design.
Compliance with these instructions is essential to help avoid
hazards and increases the reliability and service life of the
master link for 3- and 4-leg chain slings.
DANGER! Indicates a hazardous
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! Indicates a hazardous
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 the 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
15/64”. The Working Load Limits have now also been
adjusted.
DEFINITIONS
Clevis
A U-shaped fitting with pin.
Working Load Limit (WLL)
The maximum load which a chain sling or component is
designed to support.
Read ASME B30.9 „Slings“, Chapters 9-0 and 9-1.
Read ASME B30.26 “Rigging Hardware”,
Chapters 26-0, 26-1, 26-4.
2. BASIC SAFETY REQUIREMENTS
To prevent the risk of injury never walk or stay under lifted
loads!
The Working Load Limit must not be exceeded!
Only use master links as well as lifting and attachment
means free from defects!
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 Operating and Mounting Instructions
as well as standards ASTM A 906/A 906 M (Standard
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).

MOUNTING INSTRUCTIONS
MASTER LINKS FOR 3- AND 4-LEG CHAIN SLINGS
GRADES 80 AND 100
THIELE GmbH & Co. KG
# Change indicator
www.thiele.de | [email protected]
B11089-A
replaces -
© All rights reserved.
US 01.2020
2 | 8
•The specific safety and operating regulations and standards
issued locally in the country where the items are used must
be observed.
•The directions given in these Mounting Instructions and
specified documentations relating to safety, assembly,
operation, inspection, and maintenance must be made
available to persons operating and using the master links.
•These Mounting Instructions must be available in a place
near the product during the time the equipment is used.
Please contact the manufacturer if replacements are
needed. Also see chapter 13.
•During operation work, wear your personal protective
equipment!
•Improper assembly and use may cause personal injury
and/or damage to property.
•Assembly and removal as well as inspections and
maintenance must exclusively be carried out by skilled,
qualified, trained and authorized persons only.
•Structural changes are impermissible (e.g. welding,
bending).
•Operators must carry out a visual inspection and, if
necessary, a functional test of the safety equipment
before each use.
•Never use worn-out, bent or damaged master links.
•Never expose master links or master link assemblies to
loads exceeding the specified Working Load Limit.
•Do not use force when mounting/positioning the master
links.
•Avoid bending loads to act on master links.
•Only lift loads that are freely movable and not attached or
fastened.
•Always monitor a suspended load.
•Master links must be allowed to move freely in all tensile
directions.
•Do not start lifting before you have made sure the load has
been correctly attached and balanced.
•No one including you (operator) must be in the way of the
moving load (hazard area).
•During lifting make sure your hands or other body parts do
not come into contact with lifting means. Only remove
lifting means manually (use your hands).
•Avoid impacts, e.g. due to abruptly lifting loads with chain
in slack condition.
•Usage of fixed size master link assemblies without working
safety elements (dowel pins) is not permissible.
•Put the load only down in flat places/sites where it can be
safely deposited.
•In the event of doubts or concerns about the proper and
safe use, inspection, maintenance or similar things contact
your safety officer or the manufacturer.
THIELE is not responsible for damage caused by non-
observance of the instructions, rules, standards and notes
indicated!
As regard grade 100, THIELE does not give its approval to the
assembly of components sourced from different
manufacturers!
As a rule, chain master links for 3- and 4-leg chain slings are
not permitted for the transportation of persons.
3. DESCRIPTION AND INTENDED USE
Master link assemblies and fixed size master link assemblies
are exclusively intended for the usage in chain sling assemblies
according to ASTM A 906/A 906M.
They are prevalently used as upper end fittings to connect the
sling chain assemblies to the crane hooks or are used as
bottom end fittings to be assembled together with shackles to
carry the load.
Fixed size master links have integrated ringshackles to easily
attach sling chains and therefore they are predestinated for
mounted sling chain assemblies.
These Mounting Instructions apply to following products:
•TWN 0797, TWN 1304, TWN 1315, TWN 1804, TWN 1815:
Master link assemblies for chains and wire ropes
•TWN 1817:
Oversized master link assemblies for crane hooks DIN15401
•TWN 0810/4, TWN 1810/4:
Fixed size master link assemblies type TAA
•TWN 0811/4:
Fixed size master link assemblies type TAB
Master link assemblies and fixed size master links must
exclusively be used
•within the limits of their permissible Working Load Limit,
•within the temperature limits prescribed,
•for permissible attachment methods and sling angles,
•by trained and authorized persons.
Failure to do so may cause serious injury or property damage.

MOUNTING INSTRUCTIONS
MASTER LINKS FOR 3- AND 4-LEG CHAIN SLINGS
GRADES 80 AND 100
THIELE GmbH & Co. KG
# Change indicator
www.thiele.de | [email protected]
B11089-A
replaces -
© All rights reserved.
US 01.2020
3 | 8
The master links and fixed size master links meet EG Machinery
Directive 2006/42/EG requirements and feature a safety factor
of at least 4 based on Working Load Limit.
They are signed with the corresponding chain size, grade,
manufacturer’s symbol and traceability code.
THIELE master links and fixed size master links are designed to
withstand 20,000 dynamic load changes under maximum load
conditions. In the event of higher loads (e.g. multi-
shift/automatic operation, magnets) the WLL must be reduced.
4. COMMISSIONING
Prior to using the parts for the first time make sure that
•the parts comply with the order and have not been
damaged,
•test certificate, statement of compliance and Mounting
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 testings 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.
5. TECHNICAL DATA
Tables include only article numbers of standard and not customized parts.
For 3- or 4-leg chain slings the data for WLL are depending on the sling angle :
5.1 Master Link Assemblies for Offshore Chain Slings, TWN 0797, Grade 80
Nominal
Size
Article
No.
WLL [lbs.]
Dimensions [mm]
Mass
[lbs.]
=45°
=60°
=65°
=70°
=75°
E
D
F
B
D1
F1
B1
1 | 7/8
F0797268
17,400
17,600
17,600
17,600
17,600
340
26
180
100
22
160
90
11.68
1 ¼ | 1
F0797328
24,900
26,900
26,900
26,900
26,900
410
32
230
125
26
180
100
19.8
1 27/64 | 1 ¼
F0797368
35,300
35,300
35,300
35,300
35,300
480
36
250
140
32
230
125
33.1
1 25/32 | 1 27/64
F0797458
49,800
54,000
55,100
55,100
55,100
570
45
320
175
36
250
140
53.8
1 31/32 | 1 25/32
F0797508
59,100
64,100
68,600
68,600
68,600
660
50
340
190
45
320
175
88.2
2 7/32 | 1 31/32
F0797568
88,200
88,200
88,200
88,200
88,200
720
56
380
210
50
340
190
121
2 1/64 | 2 7/32
F0797638
110,200
110,200
110,200
110,200
110,200
810
63
430
240
56
380
210
174

MOUNTING INSTRUCTIONS
MASTER LINKS FOR 3- AND 4-LEG CHAIN SLINGS
GRADES 80 AND 100
THIELE GmbH & Co. KG
# Change indicator
www.thiele.de | [email protected]
B11089-A
replaces -
© All rights reserved.
US 01.2020
4 | 8
5.2 Master Link Assemblies, TWN 1304, Grade 80
Nominal
Size
Article
No.
WLL [lbs.]
60°≤  <90°
Dimensions [mm]
Mass
[lbs.]
E
D
F
B
D1
F1
B1
15/64
F1304016
7,300
156
16
110
60
10
46
23
1,58
9/32
F1304018
9,500
190
18
130
70
13
60
30
2,65
5/16
F1304020
11,800
200
20
140
80
13
60
30
3,26
3/8
F1304026
20,100
265
26
180
100
18
85
40
7,51
1/2
F1304032
31,200
330
32
230
125
22
100
50
14,1
5/8
F1304040
47,000
410
40
290
160
26
120
60
26,5
3/4
F1304050
75,400
500
50
340
190
36
160
80
54,3
7/8
F1304056
95,700
540
56
380
210
36
160
80
68,6
1
F1304063
124,000
610
63
430
240
40
180
90
97,4
1 ¼
F1304080
196,000
740
80
520
290
50
220
110
190
1 27/64
F1304085
238,000
780
85
520
290
56
260
130
232
1 37/64
F1304110
306,000
960
110
680
380
63
280
140
450
5.3 Master Link Assemblies, TWN 1315 for Ropes, Grade 80
Article
No.
WLL [lbs.]
45°≤  <90°
Dimensions [mm]
Mass
[lbs.]
E
D
F
B
D1
F1
B1
F1315016
6,200
200
16
110
60
13
90
50
2.43
F1315018
8,800
240
18
130
70
16
110
60
4.19
F1315022
11,700
290
22
160
90
18
130
70
6.83
F1315026
16,500
340
26
180
100
22
160
90
11.7
F1315032
24,500
410
32
230
125
26
180
100
19.8
F1315036
35,300
480
36
250
140
32
230
125
33.1
F1315045
46,300
570
45
320
175
36
250
140
52.9
F1315050
69,700
660
50
340
190
45
320
175
88.2
F1315056
88,600
720
56
380
210
50
340
190
121
F1315063
110,500
810
63
430
240
56
380
210
174
F1315085
224,400
1,040
85
520
290
80
520
290
441
5.4 Master Link Assemblies, TWN 1804, Grade 100
Nominal
Size
Article
No.
WLL [lbs.]
60°≤  <90°
Dimensions [mm]
Mass
[lbs.]
E
D
F
B
D1
F1
B1
15/64
F1804016
9,700
170
16
110
60
13
60
30
1.98
9/32
F1804018
11,900
190
18
130
70
13
60
30
2.65
5/16
F1804020
15,000
210
20
140
80
16
70
35
3.97
3/8
F1804026
25,100
270
26
180
100
20
90
45
8.38
1/2
F1804032
39,000
350
32
230
125
26
120
60
16.8
5/8
F1804040
58,800
420
40
290
160
28
130
65
28.7
3/4
F1804050
94,100
500
50
340
190
36
160
80
55.1
7/8
F1804056
120,000
560
56
380
210
40
180
90
77.2
1
F1804063
155,000
630
63
430
240
45
200
100
110
1 ¼
F1804080
244,000
740
80
520
290
50
220
110
190

MOUNTING INSTRUCTIONS
MASTER LINKS FOR 3- AND 4-LEG CHAIN SLINGS
GRADES 80 AND 100
THIELE GmbH & Co. KG
# Change indicator
www.thiele.de | [email protected]
B11089-A
replaces -
© All rights reserved.
US 01.2020
5 | 8
5.5 Master Link Assemblies, TWN 1815, Grade 100
Article
No.
WLL [lbs.]
45°≤  <90°
Dimensions [mm]
Mass
[lbs.]
E
D
F
B
D1
F1
B1
F1815016
7,700
200
16
110
60
13
90
50
2.43
F1815018
11,000
240
18
130
70
16
110
60
4.19
F1815022
14,500
290
22
160
90
18
130
70
6.83
F1815026
20,500
340
26
180
100
22
160
90
11.7
F1815032
30,600
410
32
230
125
26
180
100
19.8
F1815036
44,100
480
36
250
140
32
230
125
33.1
F1815045
58,000
570
45
320
175
36
250
140
52.9
F1815050
88,200
660
50
340
190
45
320
175
88.2
F1815056
110,600
720
56
380
210
50
340
190
121
F1815063
138,000
810
63
430
240
56
380
210
174
F1815085
280,300
1040
85
520
290
80
520
290
441
5.6 Oversized Master Link Assemblies Sling for Crane Hooks DIN 15401, TWN 0817, Grade 80
Nominal
Size
Crane
Hook No.
Article No.
WLL [lbs.]
Dimensions [mm]
Mass
[lbs.]
45°≤  <90°
E
D
F
B
D1
F1
B1
15/64
16
F08170616
5,200
330
22
260
140
16
70
35
6.61
15/64
25
F08170625
5,200
410
24
340
180
16
70
35
9.04
15/64
40
F08170640
5,200
500
26
430
220
16
70
35
12.6
5/16
16
F08170816
9,400
330
26
260
140
16
70
35
8.60
5/16
25
F08170825
9,400
410
28
340
180
16
70
35
11.9
5/16
40
F08170840
9,400
500
30
430
220
16
70
35
16.3
3/8
16
F08171016
14,800
350
30
260
140
20
90
45
12.6
3/8
25
F08171025
14,800
430
32
340
180
20
90
45
17.0
3/8
40
F08171040
14,800
520
34
430
220
20
90
45
22.3
1/2
16
F08171316
24,700
370
36
250
140
26
120
60
22.7
1/2
25
F08171325
24,700
440
40
340
180
22
100
50
26.4
1/2
40
F08171340
24,700
530
42
430
220
22
100
50
34.2
5/8
16
F08171616
37,500
370
36
250
140
26
120
60
20.7
5/8
25
F08171625
37,500
460
40
340
180
26
120
60
29.1
5/8
40
F08171640
37,500
550
42
430
220
26
120
60
37.0
3/4
25
F08172025
58,400
590
55
430
220
36
160
80
71.2
7/8
40
F08172240
69,400
590
55
430
220
36
160
80
71.2
5.7 Fixed Size Master Link Assemblies Type TAA, TWN 0810/4, Grade 80
Nominal
Size
Article No.
WLL [lbs.]
Dimensions [mm]
Mass
[lbs.]
60°≤<90°
45°≤  <60°
30°≤  <45°
E
D
F
B
D1
F1
B1
15/64
F08104068
6,400
5,200
3,700
201
16
110
60
13
60
13
3.09
5/16
F08104088
11,700
9,500
6,800
267
22
160
90
16
70
35
6.83
3/8
F08104108
18,400
15,100
10,600
316
26
180
100
20
90
45
11.9
1/2
F08104138
31,200
25,500
18,000
409
32
230
125
26
120
60
24
5/8
F08104168
47,000
38,400
27,100
495
40
290
160
28
130
60
42
7/8
F08104228
88,900
72,500
51,300
620
50
340
190
40
180
90
95

MOUNTING INSTRUCTIONS
MASTER LINKS FOR 3- AND 4-LEG CHAIN SLINGS
GRADES 80 AND 100
THIELE GmbH & Co. KG
# Change indicator
www.thiele.de | [email protected]
B11089-A
replaces -
© All rights reserved.
US 01.2020
6 | 8
5.8 Fixed Size Master Link Assemblies Type TAA, TWN 1810/4, Grade 100
Nominal
Size
Article No.
WLL [lbs.]
Dimensions [mm]
Mass
[lbs.]
60°≤  <90°
45°≤  <60°
30°≤  <45°
E
D
F
B
D1
F1
B1
15/64
F1810406
8,000
6,600
4,600
201
16
110
60
13
60
30
3.08
5/16
F1810408
14,800
12,100
8,500
247
20
140
80
16
70
35
5.95
3/8
F1810410
22,900
18,700
13,200
316
26
180
100
20
90
45
11.9
1/2
F1810413
39,000
31,800
22,500
409
32
230
125
26
120
60
24.7
5/8
F1810416
58,700
47,900
33,900
495
40
290
160
28
130
65
42.8
5.9 Fixed Size Master Link Assemblies Type TAB, TWN 0811/4, Grade 80
Nominal
Size
Article No.
WLL [lbs.]
Dimensions [mm]
Mass
[lbs.]
60°≤  <90°
45°≤  <60°
30°≤  <45°
E
D
F
B
D1
F1
B1
15/64
F08114068
6,400
5,200
3,700
161
16
70
35
13
60
30
2.65
5/16
F08114088
11,700
9,500
6,800
197
20
90
45
16
70
75
5.05
3/8
F08114108
18,400
15,100
10,600
236
22
100
50
20
90
45
8.97
1/2
F08114138
31,200
25,500
18,000
299
26
120
60
26
12
60
18.3
5/8
F08114168
47,000
38,400
27,100
345
32
140
70
28
130
65
28.9
7/8
F08114228
88,900
72,500
51,300
460
40
180
90
40
180
90
71.9
6. ASSEMBLY AND DISASSEMBLY OF CLEVIS-
TYPE FASTENING SYSTEMS
6.1 Preparations
All components to be installed or used must be in perfect
condition and the relevant Working Load Limits of all parts
must accommodate the respective load to be handled.
6.2 Clevis Fastening System
The clevis fastening system only
permits attachment of the nominal
chain size that suits the attachment
component.
6.2.1 ASSEMBLY
•If necessary, remove dowel pin
and pin.
•(A) Place end of chain leg
between the lateral clevis
elements.
•(B) Push pin from the side fully into the clevis and through
the last chain link of the leg.
•(C) Drive dowel pin fully in (must not project) to secure the
pin. The slot must face away from the pin.
Check whether the chain runs smoothly.
The dowel pins must only be installed once.
Only connect pins and attachment components of identical
grades. Starting with Ø ½” the pins are marked on the front
end.
6.2.2 DISASSEMBLY
•Slacken the respective chain leg.
•(A) Drive dowel pin out using
hammer and drift punch 1).
•(B) Push pin out using a drift
punch.
•(C) Remove the chain.
1) Suitable drift punches are available by Article No. Z03303.

MOUNTING INSTRUCTIONS
MASTER LINKS FOR 3- AND 4-LEG CHAIN SLINGS
GRADES 80 AND 100
THIELE GmbH & Co. KG
# Change indicator
www.thiele.de | [email protected]
B11089-A
replaces -
© All rights reserved.
US 01.2020
7 | 8
7. CONDITIONS OF USE
7.1 General
Master links and fixed size master links must not be guided by
other parts during operation. They also must not be forced
sidewards to avoid bending stress.
Take care for reduction of Working Load Limits relating to sling
angles . Data see tables in chapter 5.
7.2 Influence of Temperature
The respective temperature range limits must be considered
for all components used.
Using master links for 3- and 4-leg chain slings and fixed sized
master link assemblies in high temperatures will cause the
Working Load Limit to be reduced as indicated below.
Temperature range
Remaining
WLL
Grade 80
-40 °C ≤t ≤205 °C
-40 °F ≤ t ≤ 400 °F
100 %
205 °C < t ≤300 °C
400 °F < t ≤572 °F
90 %
300 °C < t ≤400 °C
572 °F < t ≤752 °F
75 %
Grade 100
-40 °C ≤ t ≤ 205 °C
-40 °F ≤ t ≤ 400 °F
100 %
If the link components have been exposed to temperatures
exceeding the maximum values specified they must not be
used furthermore.
7.3 Environmental Influence
Master links for 3- and 4-leg chain slings and fixed sized master
link assemblies must not be used in environments where acids,
aggressive or corrosive chemicals or their fumes are present.
Hot-dip galvanizing or galvanic treatment is prohibited as well.
7.4 Special Hazardous Conditions
The degree of danger when used in offshore applications, the
lifting of hazardous loads, such as for example liquid metal or
similar, risk potentials have to be assessed by a competent
person in the form of a risk analysis.
Any additional rules and directives must be followed in this
case.
Short inspection intervals must be scheduled for abrasive
blasting environments. Selecting a welded sling chain assembly
of the next greater nominal size will increase the permissible
wear allowance.
Components with clevis are not intended for applications in
abrasive blasting environments.
8. IDENTIFICATION/MARKING
As a rule, an identification tag is attached to the master links
for 3- and 4-leg chain slings adjacent to the master link.
9. INSPECTION, MAINTENANCE, DISPOSAL
9.1 General
Inspections and maintenance must be arranged by the Owner!
Inspection intervals shall be determined by the Owner!
Visual inspections must be regularly carried out and
documented by competent and trained persons, at least once a
year or more frequently if the parts are in heavy duty service.
After three years at the latest they must additionally be
examined for cracks. A load test is not a substitute for this
examination.
The results of the inspection shall be kept in a file that has to
be set up for each component before first use. The register
shall show characteristic data of the parts as well as identity
details.

MOUNTING INSTRUCTIONS
MASTER LINKS FOR 3- AND 4-LEG CHAIN SLINGS
GRADES 80 AND 100
THIELE GmbH & Co. KG
# Change indicator
www.thiele.de | [email protected]
B11089-A
replaces -
© All rights reserved.
US 01.2020
8 | 8
Immediately stop using master links for 3- and 4-leg chain
slings that show the following defects:
•missing or illegible identification/marking,
•deformation, elongation or fractures of chains or com-
ponents,
•cuts, notches, cracks, incipient cracks, pinching,
•heating beyond permissible limit,
•severe corrosion,
•reduction of the averaged link thickness by more than 10 %
as mean value of measurements taken perpendicularly
towards each other.
Cleaning (e.g. prior to inspections) must not take place by using
flames or methods that might cause hydrogen embrittlement
(e.g. pickling or immersion in acidic solutions).
9.2 Inspection Service
THIELE offers inspection, maintenance and repair services by
trained and competent personnel.
9.3 Maintenance and Repair
Maintenance and repair work must only be performed by
competent and trained persons.
Minor notches and cracks may be eliminated by careful
grinding observing the maximum cross section reduction
requirement of 10 % and avoid making more severe cuts or
scores.
All maintenance and repair activities are to be documented
properly.
9.4 Disposal
All components and accessories of steel taken out of service
must be scrapped in accordance with local regulations and
provisions.
10. SPARE PARTS
Use only original spare parts.
Sets consist of pin and dowel pin.
Nominal Size
Article No.
Nominal Size
Article No.
15/64
F48694
15/64
F48686
5/16
F48352
5/16
F48687
3/8
F48355
3/8
F48688
1/2
F48358
1/2
F48689
5/8
F48361
5/8
F48690
7/8
F48367
11. STORAGE
Master links for 3- and 4-leg chain slings must be stored
properly sorted and in dry conditions at temperatures between
32 °F and 104 °F.
Do not store in a manner that cause mechanical damage.
12. THIELE OPERATING AND MOUNTING
INSTRUCTIONS
Current operating and installation instructions are available as
a PDF download on the THIELE-website www.thiele.de.
13. PUBLISHING INFORMATION
Distrubutor:
KWS Inc.
P.O. Box 470487, Tulsa, OK 74147, USA
Phone number 800-872-9313
Fax number [phone]
Email [email protected]
Manufacturer:
THIELE GmbH & Co. KG
Werkstraße 3, 58640 Iserlohn, Germany
Phone number +49 2371/947-0
Fax number +49 2371/947-241
Email [email protected]