Flat Type Chains/ DUALINK®-Chains

THD DUALINK®-Chains

THIELE introduced another innovative product to the mining industry by inventing the flat-type chain in 1985. A flat-type chain is a round-link steel chain in which every second link – the vertical link – has flattened legs so that the overall height of the chain can be reduced.
This means that a chain conveyor can be upgraded to the next chain size with matching standard sprocket. THIELE Flat Type links can be produced by either welding and pressing or by forging (DUALINK® chains).
Most of the world’s face conveyors now use Flat Type/DUALINK® Chains from the THD range.
THIELE offers the following types of corrosion protection for THD Flat Type/DUALINK® Chains, depending on underground conditions and storage times:
a) Tectyl dipped (TEC) – for short storage times and good conditions
b) Hot-dip galvanised (TZN) – for longer storage Strength: 345 – 375 HB10 times and corrosive operating conditions

THD DUALINK<sup>®</sup>-Chains

Properties

Trade Size

d x t

[mm]

Nom. Size


d

Pitch


t

Dicke


e max.

Round Link

Flat Link

Weight
app.


kg/m

Inside Width

b1 min.

Outside Width

b2 max.

Inside Width

b3 min.

Outside Width

b4 max.

24 x 86**

24

± 0,7

86

± 0,9

29

31

81

28

64

11.5

26 x 92**

26

± 0,8

92

± 0,9

30

31

85

29

75

13.7

30 x 108**

30

± 0,9

108

± 1,1

34

34.5

98

33

87

18.0

34 x 126

34

± 1,0

126

± 1,3

38

39

111

37

98

23.4

38 x 126*

38

± 1,1

126

± 1,3

42

42.1

123

42

111

30.1

38 x 137

38

± 1,1

137

± 1,4

42

42.1

123

42

111

29.0

38 x 146*

38

± 1,1

146

± 1,5

42

42.1

123

42

111

27.6

42 x 146

42

± 1,1

146

± 1,5

45.5

48

135

46

115

36.0

48 x 144/160*

48

± 1,5

304***

± 1,6

56

62

163

57

127

48.2

48 x 152

48

± 1,5

152

± 1,5

54

61

162

52

126

46.5

* only as Flat Type Chain; ** only as DUALINK® Chain; *** module over two links

Trade Size

d x t

Article-No.

TEC

Article-No.

TZN

Proof Force

kN

Elongation under test force

% max.

Breaking Force

kN min.

Elongation at Break

%

Deflection

[mm]

24 x 86

F13485

auf Anfrage

543

1.6

724

11

24

26 x 92

F14933

auf Anfrage

637

1.6

850

11

26

30 x 108

F13666

auf Anfrage

848

1.6

1,130

11

30

34 x 126

F13842

auf Anfrage

1,090

1.6

1,450

11

34

38 x 137

F13918

F13917

1,360

1.6

1,820

11

38

42 x 146

F15021

F15015

1,660

1.6

2,220

11

42

48 x 152

F14956

F14954

2,170

1.6

2,900

11

48

Note: the above values apply to chains in ‘natural black’ condition (NSW)

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