Machinery's Handbook, 31st Edition
2714
Wire Rope Table 1. Weights and Strengths of 6 × 7 (Standard Coarse Laid) Wire Ropes, Preformed and Not Preformed
Breaking Strength, Tons of 2000 Lbs.
Breaking Strength, Tons of 2000 Lbs.
Approx. Weight per Ft., Pounds
Approx. Weight per Ft., Pounds
Impr. Plow Steel
Mild Plow Steel
Impr. Plow Steel
Mild Plow Steel
Dia., Inches
Plow Steel
Dia., Inches
Plow Steel
0.094 0.15 0.21 0.29
2.64 2.30 2.00 4.10 3.56 3.10 5.86 5.10 4.43 7.93 6.90 6.00 10.3 8.96 7.79
0.84 1.15 1.50 1.90 2.34 2.84 3.38
22.7 19.8 17.2 30.7 26.7 23.2 39.7 34.5 30.0 49.8 43.3 37.7 61.0 53.0 46.1 73.1 63.6 55.3 86.2 75.0 65.2
1 ∕ 4
3 ∕ 4 7 ∕ 8
5 ∕ 16
1
3 ∕ 8
1 1 ∕ 8 1 1 ∕ 4 1 3 ∕ 8 1 1 ∕ 2
7 ∕ 16
0.38 0.48 0.59
1 ∕ 2
13.0
11.3
9.82
9 ∕ 16
15.9 13.9 12.0
5 ∕ 8
For ropes with steel cores, add 7 1 ⁄ 2 percent to above strengths. For galvanized ropes, deduct 10 percent from above strengths. Source: Rope diagrams, Bethlehem Steel Co. All data, US Simplified Practice Recommenda - tion 198-50. 6 × 19 Class (Standard Hoisting Rope) : This rope is the most popular and widely used class. Ropes in this class are furnished in regular or Lang lay and may be obtained preformed or not preformed. Cores may be of fiber, independent wire rope, or wire strand. As can be seen from Table 2 and Fig. 2a through Fig. 2h, there are four common types: 6 × 25 filler wire construction with fiber core (not illustrated), independent wire core, or wire strand core (1 × 25 or 1 × 43); 6 × 19 Warrington construction with fiber core; 6 × 21 filler wire construction with fiber core; and 6 × 19, 6 × 21, and 6 × 17 Seale construction with fiber core. Table 2. Weights and Strengths of 6 × 19 (Standard Hoisting) Wire Ropes, Preformed and Not Preformed
Breaking Strength, Tons of 2000 Lbs.
Breaking Strength, Tons of 2000 Lbs.
Approx. Weight per Ft., Pounds
Approx. Weight per Ft., Pounds
Impr. Plow Steel
Mild Plow Steel
Impr. Plow Steel
Mild Plow Steel
Dia., Inches
Plow Steel
Dia., Inches
Plow Steel
0.10 0.16 0.23 0.31 0.40 0.51 0.63 0.90 1.23 1.60 2.03
2.74 4.26 6.10 8.27 10.7
2.39 2.07 3.71 3.22 5.31 4.62 7.19 6.25 9.35 8.13
2.50 3.03 3.60 4.23 4.90 5.63 6.40 7.23
64.6 56.2 48.8 77.7 67.5 58.8 92.0 80.0 69.6
1 1 ∕ 4 1 3 ∕ 8 1 1 ∕ 2
1 ∕ 4
5 ∕ 16
3 ∕ 8
1 1 2 2 2
5 ∕ 8 3 ∕ 4
107 124 141 160 179 200 244 292
93.4 81.2
7 ∕ 16
108 123 139 156 174 212 254
93.6
1 ∕ 2
13.5 11.8
10.2
107 121
1 7 ∕ 8
9 ∕ 16
16.7 14.5 12.6 23.8 20.7 18.0 32.2 28.0 24.3 41.8 36.4 31.6 52.6 45.7 39.8
5 ∕ 8 3 ∕ 4 7 ∕ 8
1 ∕ 8 1 ∕ 4
… … … …
8.10 10.00 12.10
2 1 ∕ 2
1
2
3 ∕ 4
1 1 ∕ 8
The 6 × 25 filler wire with fiber core not illustrated. For ropes with steel cores, add 7 1 ⁄
2 percent to above strengths. For galvanized ropes, deduct 10 percent from above strengths. Source: Rope diagrams, Bethlehem Steel Co. All data, US Simplified Practice Recommenda - tion 198-50. 6 × 37 Class (Extra Flexible Hoisting Rope): For a given size of rope, the component wires are of smaller diameter than those in the two classes previously described and hence have less resistance to abrasion. Ropes in this class are furnished in regular and Lang lay with fiber core or independent wire rope core, preformed or not preformed.
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