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Steel
Wire Ropes |
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Sizes : From 3mm to 80mm |
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Surface Finish :
Galvanized and Ungalvanized |
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Core
: IWRC, FC and WSC |
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Typical Wire
Constructions : 6x37, 6X19, 18x7 and
more |
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Tensile Strengths : 1960
N/mm2 (EIPS) and 2160 N/mm2
(EEIPS) |
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General
Information on Wire Ropes |
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Wire rope is
made of plaiting strands of wire ¨C normally medium carbon steel
¨C into a thick cable. The strands are formed around a core. The
strands in wire ropes are made of wore twisted together. Strands
with smaller diameter wires are less abrasion resistant and more
fatigue resistant. Strands made with thicker length of wore are
more abrasion resistant and less fatigue resistant. |
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Construction |
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The main
components of a wire rope is shown below |
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In
the above example, each individual wire is arranges
around a central wire to form a 7-wire strand. Six
of these strands are formed around a central core to
make a wire rope. The rope is specified as 6x7 (6/1)
¨C i.e. six strands each of seven wires. |
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Wire Rope Slings |
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Working Load Limits for slings using core rope of
classes 6X19 and 6X37
and having ferrule-secured eye terminations |
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One
leg sling |
Two
leg sling |
Three & Four leg sling |
Endless sling |
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Angle to the vertical |
0º |
0º
to 45º |
over 45º to 60º |
0º
to 45º |
to
60ºover 45º |
0º |
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Direct |
Direct |
Direct |
Direct |
Direct |
Direct |
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Nominal Rope Dia(mm) |
Working Load Limits (Tonnes) |
|
8 |
0.750 |
1.05 |
0.750 |
1.55 |
1.10 |
1.20 |
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9 |
0.950 |
1.30 |
0.950 |
2.00 |
1.40 |
1.50 |
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10 |
1.15 |
1.60 |
1.15 |
2.40 |
1.70 |
1.85 |
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11 |
1.40 |
2.00 |
1.40 |
3.00 |
2.12 |
2.25 |
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12 |
1.70 |
2.30 |
1.70 |
3.55 |
2.50 |
2.70 |
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13 |
2.00 |
2.80 |
2.00 |
4.15 |
3.00 |
3.15 |
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14 |
2.25 |
3.15 |
2.25 |
4.80 |
3.40 |
3.70 |
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16 |
3.00 |
4.20 |
3.00 |
6.30 |
4.50 |
4.80 |
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18 |
3.70 |
5.20 |
3.70 |
7.80 |
5.65 |
6.00 |
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20 |
4.60 |
6.50 |
4.60 |
9.80 |
6.90 |
7.35 |
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22 |
5.65 |
7.80 |
5.65 |
11.8 |
8.40 |
9.00 |
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24 |
6.70 |
9.40 |
6.70 |
14.0 |
10.0 |
10.6 |
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26 |
7.80 |
11.0 |
7.80 |
16.5 |
11.5 |
12.5 |
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28 |
9.00 |
12.5 |
9.00 |
19.0 |
13.5 |
14.5 |
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32 |
11.8 |
16.5 |
11.8 |
25.0 |
17.5 |
19.0 |
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36 |
15.0 |
21.0 |
15.0 |
31.5 |
22.5 |
23.5 |
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40 |
18.5 |
26.0 |
18.5 |
39.0 |
28.0 |
30.0 |
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44 |
22.5 |
31.5 |
22.5 |
47.0 |
33.5 |
36.0 |
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48 |
26.0 |
37.0 |
26.0 |
55.0 |
40.0 |
42.0 |
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52 |
31.5 |
44.0 |
31.5 |
66.0 |
47.0 |
50.0 |
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56 |
36.0 |
50.0 |
36.0 |
76.0 |
54.0 |
58.0 |
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60 |
42.0 |
58.0 |
42.0 |
88.0 |
63.0 |
67.0 |
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64 |
50.0 |
70.0 |
50.0 |
105.0 |
75.0 |
80.0 |
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71 |
60.0 |
84.0 |
60.0 |
126.0 |
90.0 |
96.0 |
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Leg
Factor (KL) |
1 |
1.4 |
1 |
2.1 |
1.5 |
1.6 |
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All dimensions
are approximate
These tables are compiled in compliance with EN 13414-1-2003.
Uniform Load Method calculation is used entirely. |
