Rotation Resistant Rope

Rotation resistant wire rope is widely used for hoisting unguided loads with a single part of rope. Typical applications include boom cranes, shaft sinking hoists and freely suspended mine hoists.

Dyform 18 & Flex-x 19

Excellent strength to diameter ration for resistance to abrasion and crushing as well as better bonding characteristics… increased fatigue resistance. Ideal for applications where spooling problems, drum crushing, bird caging, block twisting and fast line speeds are likely to be encountered.

  • High breaking force.
  • Compacted strands.
  • Rotation resistant.
  • Resistant to bend fatigue.
  • Resistant to crushing.
  • Reduced elongation.
  • Reduced sheave wear.
  • Long service life.
  • Optional plastic coating of IWRC.
DYFORM – 18
Dia. (in.) Nominal Strength in US Tons Approx. Weight per foot (LBS)
1/4″ 3.7 0.13
5/16″ 5.8 0.21
3/8″ 8.3 0.31
7/16″ 11.2 0.40
1/2″ 14.6 0.54
9/16″ 18.5 0.69
5/8″ 22.7 0.85
3/4″ 32.4 1.25
7/8″ 43.8 1.68
1″ 56.9 2.17
1 1/8″ 71.5 2.75
1 1/4″ 87.9 3.45
1 3/8″ 106.0 4.33
1 1/2″ 125.0 5.11

Rotation Resistant Rope 19×7 & 8×19

Widely used for hoisting unguided loads with a single part of rope. Typical applications are hoisting ropes on Derricks, boom cranes, shaft sinking hoists and freely suspended mine hoists. Both 19 X 7 and 8 X 19 are bright, right regular lay wire ropes.

19×7

  • Rotation resistant.
  • Should not be used with swivel.

Inner strands are left lang lay; outer strands are right regular lay; the natural rotation tendency of one layer is counter balanced by the other. Not recommended for multiple part lifting.

8×19

  • Rotation resistant.
  • Crush resistant.
  • Increased bendability.
  • Fatigue resistant.
  • Should not be used with a swivel.

Inner and outer strands are laid in opposing directions to counter rotation. Although less rotation resistant, 8 X 19 has a higher strength factor. Acceptable for multiple part lifting.

 

DIAMETER (IN.) 19 X 7 8 X 19
EIP GRADE  EXTRA IMPROVED PLOW STEEL IPS GRADE IMPROVED PLOW STEEL APROX. WEIGHT PER FT. (LBS) EIP GRADE EXTRA IMPROVED PLOW STEEL APPOX. WEIGHT PER FT. (LBS)
3/16″ 1.57 1.42 0.064 N/A N/A
1/4″ 2.77 2.51 0.113 N/A N/A
5/16″ 4.3 3.9 0.177 4.63 0.18
3/8″ 6.15 5.59 0.25 6.63 0.26
7/16″ 8.33 7.58 0.35 8.97 0.36
1/2″ 10.8 9.85 0.45 11.6 0.47
9/16″ 13.6 12.4 0.58 14.7 0.6
5/8″ 16.8 15.3 0.71 18.1 0.73
3/4″ 24 21.8 1.02 25.9 1.06
7/8″ 32.5 29.5 1.39 35 1.44
1″ 42.2 38.3 1.82 45.5 1.88
1 1/8″ 53.1 48.2 2.3 57.3 2.39
1 1/4″ 65.1 59.2 2.83 70.5 2.94
1 3/8″ 78.4 71.3 3.43 84.9 3.56
1 1/2″ 92.8 84.4 4.08 100 4.24

Dyform 34LR

Dyform 34LR

  • Strongest of all ropes in the rotation resistant product range.
  • Compacted strands.
  • Rotation resistant.
  • Resistant to bending fatigue.
  • Resistant to crushing.
  • Reduced elongation.
  • Reduced sheave wear.
  • Long service life.
  • Optional plastic coating of IWRC.

Dyform-34LR is the strongest, most rotation resistant wire rope manufactured with compacted strands. Dyform 34LR is made in a multi-layer construction with the outside strand laid in a direction opposite to the inside strands. All Dyform 34LR is made with wire strand core and is inventoried in sizes 5/8″ through 1 1/8″ diameter (other sizes available upon request)

 

DYFORM 34LR & 35LS
DIAMETER APPROX. WEIGHT PER FOOT (LBS) MINIMUM BREAKING FORCE TONS (2000 LBS.)
1960 2160
MM Inches 34LR 35LS 35LS 34LR 34LR
1/2″ 0.54 0.49 15.4 13.6 17.42
13 0.57 0.51 16.19 14.28 18.21
14 0.65 0.6 18.88 16.52 21.13
9/16″ 0.69 0.62 19.67 17.31 22.03
15 0.77 0.69 22.03 19.11 24.73
16 5/8″ 0.87 0.78 25.18 21.69 28.21
17 0.94 0.87 27.2 24.28 30.46
18 1.07 0.97 30.8 27.09 34.62
19 3/4″ 1.2 1.11 34.51 30.91 38.67
20 1.32 1.21 38.33 33.61 42.94
21 1.49 1.34 43.28 37.43 48.45
22 1.61 1.49 46.65 41.37 52.38
7/8″ 1.65 1.51 47.21 41.59 53.06
23 1.75 1.61 50.69 44.74 56.88
24 1.92 1.77 55.65 49.35 62.38
25 2.1 .1.91 60.59 52.94 67.89
1″ 2.16 1.97 62.38 54.4 70.03
26 2.28 2.08 66.09 57.78 74.19
28 2.63 2.41 75.99 66.99 85.2
1 1/8″ 2.7 2.5 77.45 68.9 86.89
30 2.99 2.74 86.44 75.99 97.01
32 1 1/4″ 3.39 3.1 98.13 85.99 110.16
35 1 3/8″ 4.05 3.82 116.9 105.89 123.65
38 1 1/2″ 4.78 4.35 138.26 120.27 147.25