Wire Rope
 Wire Rope
Wire Ropes

6x19 & 6x36

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Rope Selection

Construction

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Lay

Measuring Dia.

Rope Inspection and Removal

Inspection

What to Look For

Wear/Abuse

Removal Criteria

Extending Rope Service

Warnings



Standard 6 x 19 & 6 x 36 Classification Ropes

The 6 x 19 classification of wire ropes includes standard 6 strand, round strand ropes with 16 through 26 wires per strand. The 6 x 36 classification of wire ropes includes standard 6 strand, round strand ropes with 27 through 49 wires per strand. Although their operating characteristics vary, all have the same weight per foot  and the same minimum breaking force, size for size.

While the 6 x 19 ropes give primary emphasis to abrasion resistance in varying degrees, the 6 x 36 ropes are important for their fatigue resistance. This fatigue resistance is made possible by the greater number of small wires per strand.

Although there are exceptions for special applications, the constructions in 6 x 36 classification are primarily designed to be the most efficient for each rope diameter. As the rope size increases, for instance, a large number of wires can be used to achieve required fatigue resistance, and still those wires will be large enough to offer adequate resistance to abrasion.


6x19 classification ropes

6x19S (Seale) In this construction, each strand has nine outer wires over nine smaller inner wires over one large center wire. A comparison of cross-sections shows that these outside wires are larger than those of the 6 x 25FW or 6 x 26WS. Therefore, its resistance to abrasion is increased, but its fatigue resistance is decreased. This is a good rope to withstand abrasion or crushing on the drum.

6x25FW (Filler Wire) To most wire rope users, 6 x 19 means 6 x 25 filler wire. It was the most common rope in the 6 x 19 classification. This rope has a good balance between both abrasion resistance and fatigue resistance in relation to other ropes.

6x26WS (Warrington Seale) This construction has better resistance to abrasion than a 6 x 25FW. It also features a compact construction with solid support for the wires; hence, it has a high resistance to crushing. Its number and relative size of the inner wires add to the stability of the strand and gives it a fatigue resistance comparable to a 6 x 25FW.

A standard 6 x 26WS construction provides the best rope for a wide range of applications. In general, we recommend the use of a 6 x 26WS in any application where a 6 x 25FW is used.


6x36 classification ropes

In most rope sizes, only one 6 x 36 classification rope is made. These constructions were selected to provide fatigue resistance without having wires that are too small.

The greater number of wires in the 6 x 36 classification makes these ropes more susceptible to crushing. This can be minimized, however, by specifying an Independent Wire Rope Core (IWRC) and by using well-designed sheaves, grooved drums and proper operating techniques.


Minimum Breaking Force and weights for standard 6 x 19 and 6 x 36 classification ropes

 

FIBER CORE

                    IWRC

Diameter
(in.)

Approx.
wt./ft.
(lbs.)

Minimum Breaking Force
(tons of 2000 lbs.)
IPS         XIP®

Approx.
wt./ft.
(lbs.)

Minimum Breaking Force
(tons of 2000 lbs.)

   IPS        XIP®           XXIP®

3/16

0.059

1.55

1.71

--

--

--

--

1/4

0.105

2.74

3.02

0.116

2.94

3.40

--

5/16

0.164

4.26

4.69

0.18

4.58

5.27

--

3/8

.0236

6.10

6.72

0.26

6.56

7.55

8.30

7/16

0.32

8.27

9.10

0.35

8.89

10.2

11.2

1/2

0.42

10.7

11.8

0.46

11.5

13.3

14.6

9/16

0.53

13.5

14.9

0.59

14.5

16.8

18.5

5/8

0.66

16.7

18.3

0.72

17.9

20.6

22.7

3/4

.095

23.8

26.2

1.04

25.6

29.4

32.4

7/8

1.29

32.2

35.4

1.42

34.6

39.8

43.8

1

1.68

41.8

46.0

1.85

44.9

51.7

56.9

1 1/8

2.13

52.6

57.8

2.34

56.5

65.0

71.5

1 1/4

2.63

64.6

71.1

2.89

69.4

79.9

87.9

1 3/8

3.18

77.7

85.5

3.50

83.5

96.0

106

1 1/2

3.78

92.0

101

4.16

98.9

114

125

1 5/8

4.44

107

118

4.88

115

132

146

1 3/4

5.15

124

137

5.67

133

153

169

1 7/8

5.91

141

156

6.50

152

174

192

2

6.72

160

176

7.39

172

198

217

2 1/8

7.59

179

197

8.35

192

221

244

2 1/4

8.51

200

220

9.36

215

247

272

2 3/8

 

10.4

239

274

 

2 1/2

11.6

262

302

2 5/8

12.8

288

331

2 3/4

14.0

314

361

2 7/8

15.3

341

392

3

16.6

370

425

3 1/8

18.0

399

458

3 1/4

19.5

429

492

3 3/8

21.0

459

529

3 1/2

22.7

491

564

3 5/8

24.3

523

602

3 3/4

26.0

557

641

3 7/8

27.7

591

680

4

29.6

627

720

4 1/8

31.7

658

757

4 1/4

33.3

694

799

4 3/8

35.4

734

844

Available galvanized at 10% lower strengths, or in equivalent strengths on special request