VER SALES, INC.

Your Wire Rope Source

1X 7
6 X 12
6 X 16
6 X 19
6 X 37
6 X 42
7 x 19
8 x 19
7 x 7
18 x 7
1 x 7 Commonly used for guying purposes where flexibilty is not important.
usually manufactured as galvanized or stainless steel.


6 x 12 7 Fiber Cores Galvanized finish for running rigging. This construction is extremely flexible yet it has a considerably higher breaking strength than manila lines of equivalent diameter and considerrable amount of fiber it should not be used where high strength or resistance to crushing is desired.


6 x 16 Filler Wire Seale (or6 x 21) - Used on draglines and haulages where more resistance to severe abrasion and greater flexibilty is required than that provided by 6 x 19 Seale Construction.


6 x 19 Seale ---The large outer wires of this construction make it ideally suited for extremely severe conditions as the large outer wires will wear deeply before parting and resist crushing. The principle applications of this type construction ar on draglines, logging ropes, rotary drill lines and cableway track lines..


6 x 37 Filler Wire Seale - Due to it's high reserve strength and extreme fleixibilty, this construction is ideally suited for use on cranes where safety factor and flexibilty are of prime importance. Because of it's small outer wires, however, it does not have the abrasion-resistance characteristics of other constructions of wire rope.


6 x 42 Hemp Cores --Tiller Rope--- as it name implies, this construction is used for tiller ropes in marine applications and also for elevator hand ropes. While it is about the most flexible wire rope made it has a comparatively low breaking strength and should never be subjected to severe abrasion.


7 x 7 Aircraft Galanized or and 7 x 19 Stainless Steel --- These constructions in small sizes are almost universally used on aircraft installations and they are particularly designed to be suited for this purpose. In the large sizes they are used for bridge suspender cables.


8 x 19---Filler Wire Seale----Because of its large number of strands this construction is more flexible than the 6 x 19 constuction, however, it is less resistant to abrasion. Its primary applications are on elevators and cranes where flexibilty is desired.


18 x 7 Non-Spinning---This construction is used where it is desirable to minimize the tendency of a suspended unguided load to rotate under the tension. Such as cranes lifting steel beams, granite blocks or concrete buckets.



6' x 19 Classification

Most ropes with six round strands and with 16 through 26 wires per strand, are included in this classification. Although their physical characteristics may vary widely, all have the same weight per foot and the same breaking strength, size-for-foot.

6 x 19 Seale
6 x 21 Filler Wire 6 x 25 Filler Wire 6 x 26 Warrington Seale
In a 6 x 19 seale, each strand has 9 outer wires over 9 smaller inner wires over on large center wire. A comparison of cross sections shows that these outside wires are larger than those of the 6 x 21 FW, 6 x 25 FW, or the 6 x 26 WS. 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. A comparison of the cross section diagrams shows that the outer wires of the 6 x 21 FW are larger and fewer than those of the 6 x 25 FW construction. The 6 x 21 FW has 10 and the 6 x 25 FW has 12. Fewer but larger outside wires means better resistance to abrasion but somewhat less resistance to bending fatigue. Therefore 6 x 21 FW is a good choice where abrasive wear is accompanied by moderate bending. To most wire rope users, 6 x 19 means 6 x 25 filler wire. This is because, counting the 6 small filler wires there are actually 25 wires per strand. A 6 x 25 FW rope has a good balance between resistance to abrasion and fatigue resistance in relation to other ropes. For that reason, it is the "work horse" of wire ropes, used for more purposes than any other construction. It is also a favorite for slings up to about 1 1/4" in diameter. This 6 x 26 Warrington Seale has the same number and size outer wires as the 6 x 21 FW. Therefore, its resistance to abrasion is the same as the 6 x 21 FW. 6 x 26 WS is a compact construction with solid support for the wires; hence it has a high resistance to crushing. The number and relative size of the inner wires of the 6 x 26 WS add to the stability of the strand and gives it a fatigue resistance comparable to a 6 x 25 FW.
DIAMETER
IN INCHES
FIBER CORE

Improved Plow Steel
Nominal Strength in Tons Of 2000 LBS.

IWRC

Improved Plow Steel
Nominal Strength in Tons Of 2000 LBS
.

IWRC

Extra Improved
Plow Steel
Nominal Strength in Tons Of 2000 LBS.

FIBER CORE

Approximate Weight
Per Foot In Pounds

IWRC

Approximate Weight
Per Foot In Pounds

3/16

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1

1 1/8

1 1/4

1 3/8

1 1/2

1 5/8

1 3/4

1 7/8

2

1.55

2.74

4.26

6.10

8.27

10.7

13.5

16. 7

23.8

32.2

41.8

52.6

64.6

77.7

92.0

107.

124.

141.

160.

1.67

2.94

4.58

6.56

8.89

11.5

14.5

17.9

25.6

34.6

44.9

56.5

69.4

83.5

98.9

115.

133.

152.

172.

-

3.40

5.27

7.55

10.2

13.3

16.8

20.6

29.4

39.8

51.7

65.0

79.9

96.

114.

132.

153.

174.

198.

.059

.105

.164

.236

.32

.42

.53

.66

.95

1.29

1.68

2.13

2.63

3.18

3.78

4.44

5.15

5.91

6.72

.065

.116

.18

.26

.35

.46

.59

.72

1.04

1.42

1.85

2.34

2.89

3.50

4.16

4.88

5.67

6.50

7.39

6 x 37 Classification

The 6 x 37 classification of wire rope includes most 6 strand , round strand ropes having 27 to 49 wires per strand. While 6 x 19 ropes give primary emphasis to abrasion resistance in varying degrees, the 6 x 37 ropes are important for their fatigue resistance. This fatigue resistance is made possible by the greater number of small wires per strand. Because of this emphasis on fatigue resistance the problem of choice within the 6 x 37 classification is greatly reduced. Although there are exceptions for special applications, the constructions in the 6 x 37 classifications 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. In sizes over 2 inches the 6 x 49 SWS would be so small that their resistance to abrasion would be a problem.

It should be noted that the greater number of wires makes the
6 x 37 classification more susceptible to crushing. This however,
can frequently be overcome by an independent wire rope core
and the use of well designed sheaves and grooved drums

6 x 31 Warrington Seale 6 x 36 Warrrington Seale 6 x 37
2 Operations
6 x 37 SWS
Warrington Seale
DIAMETER
IN INCHES
FIBER CORE

Improved Plow Steel
Nominal Strength in Tons Of 2000 LBS.

IWRC

Extra Improved Plow Steel Nominal Strength in Tons Of 2000 LBS.

FIBER CORE

Approximate Weight Per Foot In Pounds.
IWRC

Approximate Weight Per Foot In Pounds.
1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1

1 1/8

1 1/4

1 3/8

1 1/2

1 5/8

1 3/4

1 7/8

2

2.74

4.26

6.10

8.27

10.7

13.5

16. 7

23.8

32.2

41.8

52.6

64.6

77.7

92.0

107.

124.

141.

160.

3.40

5.27

7.55

10.2

13.3

16.8

20.6

29.4

39.8

51.7

65.0

79.9

96.

114.

132.

153.

174.

198.

.105

.164

.236

.32

.42

.53

.66

.95

1.29

1.68

2.13

2.63

3.18

3.78

4.44

5.15

5.91

6.72

.116

.18

.26

.35

.46

.59

.72

1.04

1.42

1.85

2.34

2.89

3.50

4.16

4.88

5.67

6.50

7.39

ROTATION RESISTANT ROPES

In an application where a single part hoist rope is used to lift a free load, or where rotation resistant properties are essential for rope performance, a 19 x 7 rope can be used. The rotation resistant characteristic of 19 x 7 rope is achieved by laying six strands around a core strand in one direction, and then laying 12 strands around the first operation in the opposite direction. Thus, when the rope is in tension, opposing rotational forces are created between the inner and outer layers. Ropes of 19 x 7 construction require special handling, selection and usage considerations, due to their construction. They are susceptible to kinking, crushing and unbalancing in the form of "core pops" and "birdcages". Extreme care must be given to avoid operational practices which can lead to these conditions. In addition, frequent, regular inspection for broken wires is critical when using 19 x 7. By design, the 19 x 7 construction has a relatively low reserve strength. This can result in short service life between the point in time when the broken wire removal criteria are met and when actual rope failure occurs.

19 x 7 Wire Rope

6 x 37 Classification

The 6 x 37 classification of wire rope includes most 6 strand , round strand ropes having 27 to 49 wires per strand. While 6 x 19 ropes give primary emphasis to abrasion resistance in varying degrees, the 6 x 37 ropes are important for their fatigue resistance. This fatigue resistance is made possible by the greater number of small wires per strand. Because of this emphasis on fatigue resistance the problem of choice within the 6 x 37 classification is greatly reduced. Although there are exceptions for special applications, the constructions in the 6 x 37 classifications 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. In sizes over 2 inches the 6 x 49 SWS would be so small that their resistance to abrasion would be a problem.

It should be noted that the greater number of wires makes the
6 x 37 classification more susceptible to crushing. This however,
can frequently be overcome by an independent wire rope core
and the use of well designed sheaves and grooved drums

In a multi-part wire rope system where the blocks have a tendency to twist, or for a single part hoist line which does not require the degree of rotation resistant properties found in a 19 x 7 rope, the 8 x 25 Resistwist rope has found successful application. The rotation resistant characteristic is achieved by laying the eight outer strands around an independent wire rope core so these strands are in the opposite direction to the lay of the core. Thus, when the rope is in tension, opposing rotational forces are created between core and outer strands.

In addition to 8 x 25 Resistwist ropes being more stable than 19 x 7 ropes, several other advantages exist. The 8 x 25 Resistwist has increased resistance to bending fatigue and crushing on drums and sheaves. This is achieved through the use of 8-strand construction with an independent wire rope core.

As with any application where the type of rope on an installation is changed, an 8 x 25 Resistwist rope should be substituted only after carefully comparing specifications and strength requirements.



Rotation resistance ropes frequently can provide the best economical service in specific applications, when selected, handled and used properly. Rotation resistant (contr-helically laid) ropes are different from "standard" construction ropes, because they are required to meet a different set of service requirements. Modes of failure and wear for rotation resistant ropes can vary far more than for standard constructions. The very nature of the construction which allows these ropes to meet their special operational requirements makes certain limitations and special handling which are not encountered with standard constructions.

Tests on rotation resistant ropes show that the length of service life between that point in time where the visible broken wire criteria for removal from service are met, and where actual rope failure occurs, is substantially shorter for rotation resistant ropes than for standard construction ropes. these tests emphasize the need for separate guidelines and criteria for the application, use, inspection and retirement of rotation resistant ropes. Investigation and development work in this area continues.

The use of a swivel at the load hook or in the termination for a rotation resistant rope can result in unpredictable service life. This practice, or any other which allows the rope to rotate while in service, can lead to unbalanced loading between inner and outer layers of strands, which may result in a short length of an operating rope, or there is unevenness of outer strands, the rope should be replaced.

Since rotation resistant ropes are special, applicable industry regulations and standards list separate design, maintenance, inspection and removal criteria for them. Certain inspection techniques for those ropes are different from those required on standard ropes. Assistance in dealing with these special inspection techniques can be obtained by contacting the Company's Technical Service Engineers.

The Company recommends that rotation resistant ropes be used with a MINIMUM DESIGN FACTOR OF FIVE (5).

19 x 7 Wire Rope
DIAMETER IN
INCHES
APPROX. WEIGHT
PER FOOT IN LBS
NOM. STRENGTH IN TONS OF
2000 POUNDS IMPROVED PLOW STEEL
NOM. STRENGTH IN TONS OF 2000 POUNDS PLOW STEEL
5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1

1 1/8

1 1/4

1 3/8

1 1/2

.18

.26

.36

.47

.60

.73

1.06

1.44

1.88

2.39

2.94

3.56

4.24

4.01

5.76

7.80

10.1

12.8

15.7

22.5

30.5

39.6

49.8

61.3

73.8

87.3

4.63

6.63

8.97

11.6

14.7

18.1

25.9

35.0

45.5

57.3

70.5

84.9

100.