Wire Ropes - ASC Industries LTD.

Wire Ropes
ABRASION RESISTANCE
FATIGUE RESISTANCE
. . . DECREASES
with Fewer Wires
. . . DECREASES
with Smaller Wires
. . . INCREASES
with Larger Wires
. . . INCREASES
with More Wires
WIRE ROPE
Nominal Strengths and Weights – 6 x 19 Class – 6 x 36 Class
NOMINAL STRENGTH
IN TONS OF 2000 POUNDS
DIAMETER
IN
INCHES
EXTRA IMPROVED
PLOW STEEL
IMPROVED PLOW STEEL
FIBER CORE
IWRC
IWRC
APPROXIMATE WEIGHT
PER FOOT IN POUNDS
FIBER CORE
IWRC
3/16
1/4
5/16
1.55
2.74
4.26
1.67
2.94
4.58
—
3.40
5.27
.059
.105
.164
.065
.116
.18
3/8
7/16
1/2
6.10
8.27
10.7
6.56
8.89
11.5
7.55
10.2
13.3
.236
.32
.42
.26
.35
.46
9/16
5/8
3/4
13.5
16.7
23.8
14.5
17.9
25.6
16.8
20.6
29.4
.53
.66
.95
.59
.72
1.04
7/8
1
1-1/8
32.2
41.8
52.6
34.6
44.9
56.5
39.8
51.7
65.0
1.29
1.68
2.13
1.42
1.85
2.34
1-1/4
1-3/8
1-1/2
64.6
77.7
92.0
69.4
83.5
98.9
79.9
96.
114.
2.63
3.18
3.78
2.89
3.50
4.16
1-5/8
1-3/4
1-7/8
107.
124.
141.
115.
133.
152.
132.
153.
174.
4.44
5.15
5.91
4.88
5.67
6.50
2
2-1/8
2-1/4
160.
179.
200.
172.
192.
215.
198.
221.
247.
6.72
7.59
8.51
7.39
8.35
9.36
2-3/8
2-1/2
2-5/8
222.
244.
268.
239.
262.
288.
274.
302.
331.
9.48
10.5
11.6
10.4
11.6
12.8
2-3/4
2-7/8
3
292.
317.
—
314.
341.
370.
361.
393.
425.
12.7
13.9
—
14.0
15.3
16.6
3-1/8
3-1/4
3-3/8
—
—
—
399.
429.
459.
458.
492.
529.
—
—
—
18.0
19.5
21.0
3-1/2
—
491.
564.
—
22.6
-1-
Wire Ropes
AIRCRAFT CABLE & STRAND
Not For Aircraft Use.
Min. Breaking Strength Of Strand (Ib)
Nominal
Diameter
Of Strand
(In.)
3/16
3/16
7/32
1/4
1/4
1/4
9/32
5/16
5/16
5/16
3/8
3/8
7/16
1/2
1/2
9/16
9/16
5/8
5/8
3/4
7/8
1
Number
Of
Wires
7
7
7
3
3
7
7
3
7
7
3
7
7
7
19
7
19
7
19
19
19
19
Nominal
Diameter of
Coated Wires
(In.)
.062
.065
.072
.120
.120
.080
.093
.145
.104
.109
.165
.120
.145
.165
.100
.188
.113
.207
.125
.150
.177
.200
Approx. Wt.
Of Strand
(lb/1000 ft.)
73
80
98
117
117
121
164
171
205
225
220
273
399
517
504
671
637
813
796
1,155
1,581
2,073
Utilities
Grade
11,500*
18,000
25,000
-
High
Strength
Grade
2,850
3,850
4,750
6,400
8,000*
10,800*
14,500*
18,800*
19,100
24,500
24,100
29,600
28,100
40,800
55,800
73,200
Extra-High
Strength
Grade
3,990
5,400
6,650
8,950
11,200*
15,400*
20,800*
26,900*
26,700
35,000
33,700
42,400
40,200
58,300
79,700
104,500
* ASTM A 363 (Weldless) is also available in these sizes and grades upon request
PREFORMED GALVANIZED AIRCRAFT CABLE
Not For Aircraft Use.
7x7
DIAM.
IN INCHES
3/64
3/64
1/16
1/16
3/32
3/32
1/8
5/32
3/16
7/32
1/4
5/16
3/8
APPROX.
WEIGHT
100 FT.
IN LBS.
.36
.36
.75
.75
1.6
1.6
2.8
4.3
6.2
8.3
10.6
16.7
23.6
DIAM.
IN INCHES
1/16
3/32
3/32
1/8
1/8
5/32
5/32
3/16
3/16
7/32
7/32
1/4
1/4
9/32
9/32
5/16
5/16
3/8
3/8
MINIMUM
STRENGTH
IN LBS.
270
270
480
480
920
920
1,700
2,600
3,700
4,800
6,100
9,200
13,300
-2-
7x19
APPROX.
WEIGHT
100 FT.
IN LBS.
.75
1.7
1.7
2.9
2.9
4.5
4.5
6.5
6.5
8.6
8.6
11.0
11.0
13.9
13.9
17.3
17.3
24.3
24.3
MINIMUM
STRENGTH
IN LBS.
480
1,000
1,000
2,000
2,000
2,800
2,800
4,200
4,200
5,600
5,600
7,000
7,000
8,000
8,000
9,800
9,800
14,400
14,400
Wire Ropes
STAINLESS STEEL CABLE STRAND & ROPES
Non·flexible Type 302/304/316
1x19
DIAM.
IN INCHES
3/64
3/64
1/16
1/16
5/64
5/64
3/32
3/32
7/64
7/64
1/8
1/8
5/32
5/32
3/16
3/16
7/32
7/32
1/4
1/4
9/32
9/32
5/16
5/16
3/8
3/8
7/16
1/2
9/16
5/8
APPROX.
WEIGHT
100 FT.
IN LBS.
.55
.55
.85
.85
1.4
1.4
2.0
2.0
2.7
2.7
3.5
3.5
5.5
5.5
7.7
7.7
10.2
10.2
13.5
13.5
17.0
17.0
21.0
21.0
29.4
29.4
41.0
52.1
67.0
85.5
MINIMUM
STRENGTH
IN LBS.
375
375
500
500
800
800
1,200
1,200
1,600
1,600
2,100
2,100
3,300
3,300
4,700
4,700
6,300
6,300
8,200
8,200
10,300
10,300
12,500
12,500
17,500
17,500
22,500
30,000
36,200
47,000
DIAM.
IN INCHES
1/32
3/64
3/64
1/16
1/16
5/64
3/32
3/32
7/64
1/8
5/32
3/16
7/32
1/4
9/32
5/16
3/8
7/16
1/2
9/16
5/8
3/4
DIAM.
IN INCHES
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
BREAK.
STRENGTH
IN LBS.
3,000
5,400
8,300
11,700
15,800
20,400
25,600
31,400
44,400
59,700
77,300
96,600
118,400
APPROX.
WEIGHT
100 FT.
IN LBS.
.20
.42
.42
.75
.75
1.1
1.6
1.6
2.2
2.8
4.3
6.2
8.3
10.6
13.4
16.7
23.6
34.2
44.0
55.0
68.0
97.0
BREAK.
STRENGTH
IN LBS.
115
270
270
480
480
650
920
920
1,260
1,700
2,400
3,700
4,800
6,100
7,400
9,000
12,000
15,600
21,300
26,600
32,500
46,000
DIAM.
IN INCHES
3/64
1/16
1/16
3/32
3/32
7/64
1/8
1/8
5/32
5/32
3/16
3/16
7/32
7/32
1/4
1/4
9/32
9/32
5/16
5/16
3/8
3/8
APPROX.
WEIGHT
100 FT.
IN LBS.
.42
.75
.75
1.7
1.7
2.3
2.9
2.9
4.5
4.5
6.5
6.5
8.6
8.6
11.0
11.0
13.9
13.9
17.3
17.3
24.3
24.3
MINIMUM
STRENGTH
IN LBS.
270
480
480
920
920
1,260
1,760
1,760
2,400
2,400
3,700
3,700
5,000
5,000
6,400
6,400
7,800
7,800
9,000
9,000
12,000
12,000
STAINLESS STEEL AIRCRAFT CABLE
Wire Rope Type 302/304
Not For Aircraft Use.
(“Aircraft Cable” has become an accepted industry term for small diameter 7x7 and
7x19 construction wire rope intended for industrial and marine application.)
6x37
CLASS
APPROX.
WEIGHT
100 FT.
IN LBS.
6.5
10
18
24
33
43
54
67
96
131
170
216
266
7x19
7x7
6x19
CLASS
DIAM.
IN INCHES
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
APPROX.
WEIGHT
100 FT.
IN LBS.
35.6
45.8
59
71.5
92.2
143
187
240
290
-3-
BREAK.
STRENGTH
IN LBS.
16,300
22,800
28,500
35,000
49,600
66,500
85,400
106,400
129,400
19x7
DIAM.
IN INCHES
5/32
3/16
7/32
1/4
5/16
3/8
1/2
5/8
APPROX.
WEIGHT
100 FT.
IN LBS.
4.5
6.5
8.6
11
17.3
24.3
45.8
71.5
BREAK.
STRENGTH
IN LBS.
2,160
3,330
4,500
5,760
8,100
10,800
20,520
31,500
Wire Ropes
JACKETED CABLES GALVANIZED AND STAINLESS
Galvanized Aircraft Cable
Clear Vinyl Jacketed
Galvanized Aircraft Cable
Nylon Jacketed
7x19
Not For Aircraft Use.
7x7
7x7
DIAM.
IN INCHES
3/64 - 1/16
1/16 - 3/32
1/16 - 1/8
3/32 - 1/8
3/32 - 5/32
3/32 - 3/16
1/8 - 3/16
3/16 - 1/4
3/16 - 5/16
APPROX.
WEIGHT
100 FT.
IN LBS.
.62
1.15
1.35
2.0
2.4
2.8
3.9
7.5
11.2
MINIMUM
STRENGTH
IN LBS.
270
480
480
920
920
920
1,700
3,700
3,700
7x19
DIAM.
IN INCHES
3/32 - 5/32
3/32 - 3/16
1/8 - 3/16
1/8 - 1/4
5/32 - 1/4
3/16 - 1/4
3/16 - 5/16
1/4 - 5/16
1/4 - 3/8
5/16 - 3/8
5/16 - 7/16
3/8 - 7/16
3/8 - 1/2
APPROX.
WEIGHT
100 FT.
IN LBS.
2.4
2.8
3.9
5.1
5.5
7.8
9.3
12.5
14.8
19.6
21.7
27.2
29.3
DIAM.
IN INCHES
3/64 - 1/16
3/64 - 1/16
3/64 - 5/64
1/16 - 3/32
1/16 - 3/32
1/16 - 1/8
1/16 - 1/8
3/32 - 1/8
3/32 - 1/8
3/32 - 5/32
3/32 - 5/32
3/32 - 3/16
1/8 - 3/16
1/8 - 1/4
5/32 - 3/16
3/16 - 1/4
3/16 - 5/16
MINIMUM
STRENGTH
IN LBS.
1,000
1,000
2,000
2,000
2,800
4,200
4,200
7,000
7,000
9,800
9,800
14,400
14,400
APPROX.
WEIGHT
100 FT.
IN LBS.
.62
.62
.76
1.15
1.15
1.35
1.35
2.0
2.0
2.4
2.4
2.8
3.9
5.1
4.8
7.5
11.2
BREAK.
STRENGTH
IN LBS.
270
270
270
480
480
480
480
920
920
920
920
920
1,700
1,700
2,600
3,700
3,700
APPROX.
WEIGHT
DIAM.
100 FT.
IN INCHES
IN LBS.
1/16 - 3/32
.93
1/16 - 1/8
1.18
3/32 - 1/8
2.2
3/32 - 1/8
2.2
3/32 - 5/32
2.4
3/32 - 5/32
2.4
3/32 - 3/16
2.8
1/8 - 3/16
3.9
1/8 - 3/16
3.9
1/8 - 1/4
5.1
5/32 - 7/32
5.5
5/32 - 9/32
7.5
5/32 - 7/32
5.5
3/16 -1/4
7.8
3/16 - 1/4
7.8
3/16 - 5/16
9.3
3/16 - 5/16
9.3
7/32 - 9/32
9.8
7/32 - 11/32
11.6
1/4 - 5/16
12.5
1/4 - 5/16
12.5
1/4 - 3/8
14.8
9/32 - 13/32
16.2
5/16 - 3/8
19.6
5/16 - 7/16
21.7
5/16 - 7/16
21.7
3/8 - 7/16
27.2
3/8 - 1/2
29.3
3/8 - 1/2
29.3
MINIMUM
STRENGTH
IN LBS.
480
480
1,000
1,000
1,000
1,000
1,000
2,000
2,000
2,000
2,800
2,800
2,800
4,200
4,200
4,200
4,200
5,600
5,600
7,000
7,000
7,000
8,000
9,800
9,800
9,800
14,400
14,400
14,400
Stainless Steel Aircraft Cable
Clear Vinyl Jacketed Type 302/304
Not For Aircraft Use.
7x19
7x7
DIAM.
IN INCHES
3/64 - 1/16
1/16 - 1/8
3/32 - 1/8
3/32 - 5/32
3/32 - 3/16
1/8 - 3/16
1/8 - 1/4
3/16 - 5/16
APPROX.
WEIGHT
100 FT.
IN LBS.
.5
1.3
2.0
2.4
2.8
3.9
5.1
11.2
-4-
MINIMUM
STRENGTH
IN LBS.
270
480
920
920
920
1,700
1,700
3,700
DIAM.
IN INCHES
1/8 - 3/16
5/32 - 7/32
3/16 - 1/4
1/4 - 5/16
1/4 - 3/8
APPROX.
WEIGHT
100 FT.
IN LBS.
3.9
5.5
7.8
12.5
14.8
MINIMUM
STRENGTH
IN LBS.
1,760
2,400
3,700
6,100
6,100
Wire Ropes
JACKETED CABLES STAINLESS
Stainless Steel Type 302/304 Marine Cable
White Vinyl Jacketed
7x7
DIAM.
IN INCHES
1/16 - 1/8
3/32 - 1/8
1/8 - 3/16
1/8 -7/32
1/8 - 1/4
3/16 - 1/4
3/16 - 5/16
3/16 - 3/8
1/4 - 3/8
APPROX.
WEIGHT
100 FT.
IN LBS.
1.3
2.0
3.9
3.9
5.1
8.0
9.1
11.2
14.2
7x19
MINIMUM
STRENGTH
IN LBS.
480
920
1,700
1,700
1,700
3,700
3,700
3,700
6,100
DIAM.
IN INCHES
1/8 - 3/16
5/32 - 7/32
3/16 - 1/4
APPROX.
WEIGHT
100 FT.
IN LBS.
3.8
6.8
8.0
MINIMUM
STRENGTH
IN LBS.
1,760
2,400
3,700
Stainless Steel Aircraft Cable
Nylon Jacketed Type 302/304
7x19
Not For Aircraft Use.
7x7
DIAM.
IN INCHES
3/64 - 1/16
3/64 - 1/16
3/64 - 5/64
3/64 - 5/64
1/16 - 3/32
1/16 - 3/32
1/16 - 1/8
3/32 - 1/8
3/32 - 5/32
3/32 - 5/32
3/32 - 3/16
1/8 - 1/4
5/32 - 3/16
3/16 - 5/16
APPROX.
WEIGHT
100 FT.
IN LBS.
.49
.49
.76
.76
.9
.9
1.2
1.9
2.4
2.4
2.8
5.1
4.8
7.5
DIAM.
IN INCHES
1/16 - 3/32
1/16 - 3/32
1/16 - 1/8
1/16 - 1/8
3/32 - 1/8
3/32 - 5/32
1/8 - 3/16
1/8 - 3/16
5/32 - 7/32
5/32 - 7/32
5/32 - 9/32
3/16 - 1/4
3/16 - 1/4
3/16 - 5/16
7/32 - 9/32
7/32 - 11/32
1/4 - 5/16
1/4 - 5/16
1/4 - 3/8
1/4 - 3/8
9/32 - 13/32
5/16 - 3/8
5/16 - 7/16
5/16 - 7/16
3/8 - 7/16
3/8 - 1/2
3/8 - 1/2
MINIMUM
STRENGTH
IN LBS.
270
270
270
270
480
480
480
920
920
920
920
1,700
2,400
3,700
-5-
APPROX.
WEIGHT
100 FT.
IN LBS.
.93
.93
1.18
1.18
2.0
2.3
3.9
3.9
6.1
6.1
7.5
7.8
7.8
9.2
9.8
11.6
12.5
12.5
14.4
14.8
16.2
19.6
21.7
21.7
27.2
27.2
29.3
MINIMUM
STRENGTH
IN LBS.
480
480
480
480
920
920
1,760
1,760
2,400
2,400
2,400
3,700
3,700
3,700
5,000
5,000
6,400
6,400
6,400
6,400
7,800
9,000
9,000
9,000
12,000
12,000
12,000
Wire Ropes
QUICK REFERENCE
8-strand overhead crane wire rope with a plastic coated core to increase
operating life, and to provide for permanent core lubrication. Type Super
8 V is a compacted rope for increased strength. Available in left- and
right hand lay. For all overhead cranes, looping- and accumulator tower
applications.
Developed for maximum performance on overhead cranes. This rope
features a plastic coated core for extended fatigue life performance and
permanent core lubrication. Python® Multi is spin resistant to reduce
block twisting on overhead cranes. Recommended for looping- or
accumulator tower applications.
Power 9
All steel high strength type for overhead cranes. This rope is compacted
to enhance abrasion characteristic and to reduce sheave- and drum
wear. Up to 40% strength increase over standard 6-strand constructions.
Ultra high strength type mainly used as high fatigue resistant rope for
engineered cable assemblies. Up to 55% strength increase over
standard 6-strand constructions. Sensitive to introduced rotation so call
before you select this rope for overhead crane applications.
Due to a larger number of individual wires it is more flexible than 19x7.
The entire rope is compacted to provide for better drum spooling and
less core abrasion. Recommended for Grove-, Terex-, Century- LinkBelt-, and National cranes. NOT to be used with a swivel.
Recommended to be used on tower- and european type mobile cranes.
Available in left- and right hand lay as well as in regular- and lang’s lay
constructions. Recommended to be used in single line applications.
ALLOWED to be used with a swivel.
Fatigue resistant non-rotating rope. Compacting increases strength and
sheave contact area. The plastic coated core increases fatigue life and
prevents premature inner wire breaks as well as providing for permanent
core lubrication. ALLOWED to be used with a swivel.
High strength super flexible true non-rotating rope. Oval outer strands
provide for excellent sheave and drum contact area. Lift has very
successfully been used in multiple drum layer applications. Needs
special attention during installation. ALLOWED to be used with a swivel.
High strength standard 6-strand rope for applications which require a
crush resistant rope to be used on multiple layer winding systems; e.g.
boom hoist on lattice boom mobile- and tower cranes. This rope has also
shown remarkable performance gains as main hoist rope on port
container cranes and on some overhead crane applications.
-6-
Wire Ropes
COMPACTION AND DIE-DRAWING
Many of our wire ropes are made with either die-drawn strands (Python® Compac 35) or the
entire rope is subjected to a compaction process (all other Python® types).
Here are the differences:
DIE-DRAWN STRANDS
ROPE COMPACTION
This process is applied to the strands NOT to the rope. The
ready made strands are forced through drawing dies which
compress and shape the individual wires to have a flat outer
surface. The advantages are:
This method can only be used on wire rope which is made
using the double parallel manufacturing method. The
compaction process is applied after the rope has been
manufactured and compresses individual surface wires as
well as closing strand gaps. The advantages are:
• increased strength
• increased strength
• less wire interlocking on multiple layer drums
• transforming the entire rope into a more ‘round’ shape
• less contact pressures onto sheaves and drums
• less wire interlocking on multiple drums
• less contact pressure onto sheave and drums
• embedding strands into plastic coated cores
• achieve tighter diameter tolerances
• reduces constructional rope stretch to near zero
Standard strand wires
Die-drawn strand wires
-7-
Compacted strand wires
Wire Ropes
Python®Super 8 for Overhead Cranes
Shown is Super 8 V (compacted)
8-strand fatigue resistant construction
compacted design to increase strength (Type V)
flat outer wires for optimum sheave contact (Type V)
plastic coated core helps prevent inner wire breaks
permanent lubricated core
Main Applications:
Super-8 is the classic ‘upgrade’ rope for all overhead crane types
to increase the rope's fatigue life. The 8-strand construction provides an excellent combination of flexibility, fatigue life, and abrasion resistance.
Available in right regular lay (RRL) AND left regular lay (LRL)
Also used in looping- or accumulator tower applications.
Rope Characteristic:
8-strand high performance overhead crane wire rope with a plastic coated core. This special engineered hard plastic prevents
metal to metal contact between outer- and inner strands and
greatly reduces internal, non-detectable, wear and abrasion resulting in increased fatigue life, plus it provides for permanent core
lubrication.
Type ‘V’ is compacted for increased surface contact area between
rope and sheave thus reducing sheave and drum wear.
Super 8 is up to 30% stronger than regular 6-strand EIPS ropes.
Check listings for details.
Python® Super 8 is NOT rotation resistant or non-rotating
Standard:
DIN 2078/3051 where applicable
-8-
Wire Ropes
Python® Super 8
Overhead Crane Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Construction: 8 x 25 Filler
8-strand overhead crane wire rope with a plastic coated core
to prevent inner undetectable fatigue breaks. The plastic
coating also increases fatigue life and ensures permanent
core lubrication. Type Super V is a compacted rope for better
abrasion resistance and increased strength.
Python® Super-8 is available in right- and in left lay configurations to adopt to the corresponding drum groove direction.
Furthermore, using right- and left hand rope on the same
crane results in a rope system which is very stable against
block twisting.
Imperial Python® Super 8
Rope
dia.
inch
Minimum Strength tons of 2000 lbs
Super 8 R Super 8 V Super 8 V
EIPS
EIPS
EEIPS
Weight
per foot
lbs*
7/16
1/2
9/16
10.3
13.7
17.4
15.1
19.1
16.6
21.1
.29
.47
.59
5/8
3/4
7/8
21.7
30.6
41.1
23.9
33.7
45.2
26.4
37.2
49.9
.74
1.05
1.40
1
1-1/8
1-1/4
54.8
69.4
86.9
60.3
76.4
95.7
66.5
84.2
105.5
1.87
2.37
2.97
1-3/8
1-1/2
1-5/8
103.4
122.6
144.8
113.8
134.9
159.4
125.5
148.7
175.7
3.53
4.19
4.95
1-3/4
164.4
180.9
199.4
5.61
The 8-strand construction provides an increase in contact
points between rope and sheave. Less wear of the rope and of
your equipment.
Metric Python® Super 8
Rope
dia.
mm
-9-
Minimum Strength in kn
Super 8 R Super 8 V Super 8 V
1960 N/mm2 1960 N/mm2 2160 N/mm2
Weight
per mtr
kgs*
10
11
12
75.6
91.4
108.8
119.8
132.0
.43
.52
.62
13
14
15
127.7
148.1
170.0
140.6
163.0
187.1
154.9
179.6
206.2
.73
.84
.97
16
17
18
193.4
218.4
244.8
212.9
240.4
269.5
234.6
264.9
297.0
1.10
1.25
1.40
19
20
22
272.8
302.2
365.7
300.2
332.7
402.5
330.9
366.6
443.6
1.56
1.72
2.09
24
26
28
435.2
510.8
592.4
479.0
562.2
652.0
527.9
619.6
718.6
2.48
2.91
3.38
30
32
34
680.1
773.8
873.5
748.5
851.6
961.4
824.9
938.5
1059.5
3.88
4.41
4.98
36
38
979.3
1091.1
1077.9
1200.9
1187.8
1323.5
5.59
6.22
Wire Ropes
Python® Multi – Hoisting Applications
10-strand fatigue resistant construction
compacted design for a smooth outer surface
flat outer wires for optimum sheave contact
plastic coating SHIELDS reverse lay core preventing direct
contact between outer- and inner strands thus preventing
premature inner rope failures
Reverse lay core minimizes block twisting
Main Applications:
10-strand high performance wire rope for overhead cranes as well
as some truck- and container cranes.
Special spin-resistant feature prevents much of the unwanted block
twisting on overhead cranes.
Rope Characteristic:
The core is plastic coated to prevent metal to metal contact
between inner- and outer strands and greatly reduces internal,
undetectable, wear and abrasion. Also, the core is twisted in the
opposite direction of the outer strands making this rope spinresistant and therefore ideal for cranes where both rope ends are
attached to the drum.
Multi is a compacted rope to reduce initial rope stretch and to
increase the outer strand contact area to sheaves and drum. 10
outer strands distribute the load pressures more equally thus
reducing wear of the rope and your equipment.
Compared to 6-strand ropes Multi has increased service life in
many cases up to 5 times and more.
Python® Multi is SPIN RESISTANT but NOT rotation resistant
or non-rotating. Used where these demands
are low or moderate. Proper and sufficient
line spacing is required.
Standard:
DIN 2078/3051 where applicable
- 10 -
Wire Ropes
10-Strand Hoisting Wire Rope
Breaking Strengths
Construction: 10 x 19
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Developed for maximum performance on overhead cranes.
This rope features a plastic coated core for extended fatigue
life performance and permanent core lubrication. Python®
MULTI is spin resistant to reduce block twisting on overhead
cranes. Also recommended for looping- or accumulator tower
applications.
Imperial Python® MULTI
Rope
dia.
inch
Minimum Strength tons of 2000 lbs Weight
per foot
MULTI*
MULTI
lbs
EIPS
EEIPS
1/2
9/16
5/8
13.7
17.4
21.8
15.1
19.2
24.0
.48
.61
.77
3/4
7/8
1
30.7
41.1
54.8
33.8
45.4
60.5
1.08
1.45
1.93
1-1/8
1-1/4
1-3/8
69.4
87.0
103.7
76.5
96.0
114.3
2.44
3.06
3.65
1-1/2
1-3/4
122.7
164.6
135.3
181.4
4.32
5.79
Metric Python® MULTI
- 11 -
Minimum Strength in kn
MULTI*
MULTI
Rope
dia.
mm
1960 N/mm2
2160 N/mm2
Weight
per mtr
kgs*
13
14
15
127.9
148.3
170.2
140.9
163.4
187.6
.75
.87
1.00
16
18
20
193.7
245.1
302.6
213.4
270.1
333.5
1.14
1.44
1.78
22
24
26
366.2
435.8
511.4
403.5
480.2
563.9
2.15
2.56
3.01
28
30
32
593.1
680.9
774.7
653.7
750.4
853.8
3.49
4.01
4.56
34
36
38
874.6
980.5
1092.5
963.8
1080.5
1204.0
5.14
5.77
6.43
40
42
44
1210.5
1334.5
1464.5
1334.0
1470.5
1614.0
7.12
7.85
8.62
Wire Ropes
Python® HS 9 – High Strength Hoisting – Power 9
9-strand fatigue resistant high strength construction
compacted design to increase strength
flat outer wires for optimum sheave contact (type V)
inner strands are laid parallel to the outer strands to avoid
any strand cross-overs and premature wire nicking
Main Applications:
Super high strength yet super flexible overhead crane wire rope.
Used as original equipment rope and for crane capacity upgrades.
Also used as high strength engineered assembly cable for tension
applications. Type V has little to no initial constructional stretch.
Sizes 11mm and 14 mm in left lay are original equipment ropes
for some DEMAG crane types.
Rope Characteristic:
HS-9 V is compacted to enhance the abrasion characteristic and
to reduce sheave- and drum wear. Type HS-9V in combination
with EEIPS (2160 N/mm2) wire tensile grades increases rope
strength of up to about 50% over regular strength 6-strand types.
HS-9 is constructed from a total of up to 358 single wires compared to 265 single wires in traditional 6x36 wire rope. This results
in a super strong yet super flexible rope.
Although HS-9 is our most successful high strength rope
construction there are precautions we must address before you
select this rope. One is that the direction of lay which must
correspond to drum grooving, the other is that large fleet angles
may cause high strands or core protrusion because the rope will
‘roll’ rather than ‘glide’ into the sheave groove. Any introduction of
torque into (any) wire rope will cause structural damages.
Python® HS-9 is NOT rotation resistant or
non-rotating
Standard:
DIN 2078/3051 where applicable
- 11 -
Wire Ropes
9-Strand High Strength Crane
Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Construction:
9 x 19 Seale (up to7/8")
Imperial Python® HS-9
9 x 25 Filler (1" and up)
Rope
dia.
inch
High strength rope type. Type ‘V’ is extra compacted.
Core is parallel laid to minimize strand nicking. Up to 40%
strength increase over standard 6-strand constructions.
Requires corresponding drum groove direction.
OEM rope on some DEMAG cranes. Ask us for details.
Minimum Strength tons of 2000 lbs
HS-9 V
HS-9 V
HS-9 R
EIPS
EIPS
EEIPS
Weight
per foot
lbs*
7/16
1/2
9/16
12.1
16.1
20.4
-17.5
22.2
-19.3
24.5
.40
.53
.67
5/8
3/4
7/8
25.6
36.1
49.2
27.8
39.2
52.6
30.6
43.2
57.9
.84
1.19
1.58
1
1-1/8
1-1/4
65.6
83.2
104.2
70.1
88.8
111.2
77.2
97.9
122.5
2.10
2.66
3.33
1-3/8
1-1/2
1-5/8
123.9
146.9
173.6
132.3
156.8
185.2
145.7
172.8
204.1
3.96
4.70
5.55
1-3/4
197.0
210.2
231.6
6.30
Metric Python® HS-9
- 12 -
Minimum Strength in kn
HS-9 V
HS-9 V
HS-9 R
Rope
dia.
mm
1960 N/mm2
10
11
12
89.0
107.7
128.1
13
14
15
1960 N/mm2 2160 N/mm2
Weight
per mtr
kgs*
139.1
--153.3
.49
.59
.71
150.4
174.4
200.2
163.3
189.4
217.4
180.0
208.7
239.6
.83
.96
1.10
16
17
18
227.8
257.2
288.3
247.4
279.3
313.1
272.6
307.8
345.0
1.26
1.42
1.59
19
20
22
321.2
355.9
438.3
348.8
386.5
467.7
384.4
426.0
515.4
1.77
1.96
2.34
24
26
28
521.6
612.1
709.9
556.6
653.2
757.6
613.4
719.9
834.9
2.79
3.27
3.79
30
32
34
815.0
927.3
1047.0
869.7
989.5
1117.0
958.4
1090.4
1231.0
4.36
4.96
5.60
36
38
1173.5
1307.5
1252.3
1395.3
1380.1
1537.7
6.27
6.99
Wire Ropes
Python® Ultra for engineered applications
10-strand fatigue resistant ULTRA high strength rope
compacted design to increase strength
MaxFlat™ compression for optimum sheave contact
parallel inner-to-outer strand design increases fatigue life
Main Applications:
Super high strength wire rope mainly used for engineered cable
assemblies, counterweight ropes, winch lines, boom pendants,
extension- and retraction cables, etc. Overhead crane applications
for sizes above 3/4" (19 mm) may require some restrictions as to
fleet angle and lay direction. Call before you select this rope.
Rope Characteristic:
Python® Ultra is available in right- and left hand lay.
Ask for availability from stock.
Python® Ultra when fabricated
into a Cable Assembly
Python® Ultra is our highest strength rope available. It is fully
compacted resulting in an extreme smooth outer rope surface and
the removal of nearly all of the constructional stretch. This is an
important feature if you require a low stretch rope for cables
assemblies. Ultra is an ‘all parallel’ construction type, meaning that
there are no wire cross-overs within the rope body to ensure
maximum fatigue life. Ultra provides a strength increase of up to
53% over regular 6-strand constructions. Refer to the
conservatively calculated strength tables.
Python® Ultra requires corresponding drum grooving directions;
e.g. use a right hand lay rope if the drum is left hand grooved.
Large fleet angles may cause high strands or core protrusion
because the rope will ‘roll’ rather than ‘glide’ into the sheave
groove. Any introduction of torque into (any) wire rope will cause
structural damages.
Python® Ultra is NOT rotation resistant or non-rotating
Standard:
DIN 2078/3051 where applicable
- 13 -
Wire Ropes
10-Strand Ultra High Strength
Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Construction:
10 x 19 Seale (up to 3/4")
Imperial Python® - Ultra
10 x 25 Filler (7/8" and up)
Ultra high strength type mainly used as high fatigue resistant
rope for engineered cable assemblies. Up to 55% strength
increase over standard 6-strand constructions. Sensitive to
introduced rotation so call before you select this type of rope
for overhead crane applications.
Rope Characteristic:
• Ultra High Strength
• All steel, parallel construction
• Flexible 10 outer strand type
• Fully compacted
• Smooth rope surface
• High fatigue resistant
Rope
dia.
inch
Minimum Strength tons of 2000 lbs Weight
per foot
ULTRA
ULTRA
lbs
EIPS
EEIPS
1/2
9/16
5/8
18.0
22.8
28.5
19.8
25.1
31.4
.59
.74
.93
3/4
7/8
1
40.2
53.9
71.9
44.3
59.4
79.2
1.31
1.73
2.31
1-1/8
1-1/4
1-3/8
91.1
114.1
135.7
100.5
125.8
149.6
2.93
3.66
4.36
1-1/2
1-5/8
1-3/4
1-7/8
160.9
190.0
215.7
252.4
177.3
209.5
237.8
278.3
5.17
6.10
6.93
8.11
Metric Python® - Ultra
- 14 -
Minimum Strength in kn
ULTRA
ULTRA
Rope
dia.
mm
1960 N/mm2
2160 N/mm2
Weight
per mtr
kgs*
12
13
14
142.8
167.6
194.4
157.4
184.7
214.2
.78
.91
1.06
15
16
17
223.1
253.9
286.6
245.9
279.8
315.9
1.22
1.38
1.56
18
19
20
321.3
358.0
396.7
354.1
394.6
437.2
1.75
1.95
2.16
22
24
26
480.0
571.3
670.4
529.0
629.5
738.8
2.57
3.06
3.60
28
30
32
777.5
892.6
1015.6
856.9
983.7
1119.2
4.17
4.79
5.45
34
36
38
40
1146.5
1285.3
1432.1
1586.8
1263.5
1416.5
1578.2
1748.7
6.15
6.89
7.68
8.51
42
44
46
48
1749.5
1920.0
2098.6
2285.0
1928.0
2116.0
2312.7
2518.2
9.38
10.30
11.26
12.26
Wire Ropes
Python® Compac 18 – Rotation Resistant Wire Rope
12 outer rope strands
19 wire SEALE strand construction for better flexibility
Complete rope is compacted for increased abrasion resistance and better spooling
Inner strands are reversed lay to provide rotation resistance feature
Main Applications:
Python® Compac 18 is recommended for both multipart load and single part applications where a
medium rotational stability is needed. Use as main- and auxiliary hoist line on GROVE, LINK BELT,
MANITOWOC, TEREX and other US made mobile- and truck cranes. Often used as a single point
line. Large lifting heights will require a tag line to prevent spinning of the load.
2-layer type
Also used very successfully as a pulling rope on underground cable pulling winches.
NOT recommended for construction tower cranes.
Rope Characteristic:
Using the rope to it’s maximum fatigue life will cause the rope to
deteriorate from the inside out. For this reason we do not recommend
this rope to be used on construction for tower cranes. However,
mobile and truck mounted cranes are operated on a much less
severe duty cycle and it is not expected that Python® Compac18 has
to be replaced because of inner rope fatigue but because of other
mechanical damages. Keep in mind that this statement covers
normal mobile crane use only.
Compacted strands provide improved abrasion resistance as
compared with round wire types because of the greater wire and
strand bearing surfaces contacting sheaves and drums.
Python® Compac 18 wire ropes are more resistant to the effects of
drum crushing than 19x7 due to the compacted strands and
smoothness of the rope surface.
With 18 strands of 19 wires in all sizes, Python®
Compac 18 remains extremely flexible and easy
to handle.
Python® Compac 18 ropes are ROTATATION
RESISTANT but NOT non-rotating
- 15 -
Wire Ropes
Steel Wire Rope,
Rotation Resistant, Compacted
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Construction:
18 x 19 IWRC, compacted, bright, RRL
Python® Compac 18 is recommended where a medium rotational stability is needed. Use as main- and auxiliary hoist
line on GROVE, LINK BELT, MANITOWOC, TEREX and
other US made smaller mobile- and truck cranes. Often used
as a single point line. Larger lifting heights will require a tag
line to prevent spinning of the load and/or block twisting.
NOT recommended for construction tower cranes.
- 16 -
Python® Compac 18
(18 x 19 rotation resistant)
Rope dia.
inch
Nominal Strength
tons of 2000 lbs
EIPS
Weight per foot
lbs
3/8
7/16
1/2
7.6
10.4
14.5
.30
.40
.54
9/16
5/8
3/4
18.4
22.7
32.7
.69
.85
1.25
7/8
1
1-1/8
44.5
58.1
73.5
1.68
2.17
2.74
Wire Ropes
Python® Compac 35 – Non-Rotating Wire Rope
3-layer type
16 outer rope strands (19x7 has 12 only)
Compacted rope design
Outer wires are die drawn to provide a smooth rope surface thus enhancing
spooling characteristic (less interlocking on drum)
Inner strands are reversed lay to provide good non-rotating properties of the rope.
Main Applications:
Main- and auxiliary hoist line for european type mobile- and for all
types of construction tower- and offshore cranes which require a high
strength rotation resistant rope construction. The rotation resistant
properties make this rope the preferred choice for all single- and
multiple line reeving applications.
Rope Characteristic:
This rope is constructed from 16 outer die-drawn strands over 12 inner
die-drawn strands. The compacted Lang Lay strands reduce
interlocking while spooling onto multiple layer drums as well as inter
strand- and inter layer nicking.
This rope is suited to be used on tower cranes as well as european
made mobile crane models. Python® Compac 35 comes with a limited
diameter tolerance of between +2% to +4% to comply with LEBUS
drum criteria. The large number of outer strands distribute the
pressures introduced by sheaves and drum more evenly onto the core
minimizing the danger of unexpected rope failures because of
undetected core deterioration.
Aside from this safety issue Python® Compac 35 satisfies the high
strength requirements of late model tower- and mobile cranes which
can NOT be met with neither 19x7 nor 19x19 style ropes.
Recommended to be used on grooved drums.
Python® Compac 35 is available in right- AND left hand lay to comply
with OEM specifications (Krupp, Demag, Liebherr etc.)
Python® Compac 35
ropes are classified as
NON-ROTATING
- 17 -
Wire Ropes
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Non-Rotating Steel Wire Rope,
Python® Compac 35
Euro Style – Lang’s Lay
Python® Compac 35 Euro Style
Rope
dia.
mm
Rope
dia.
inch
14
15
16
9/16
17
18
19
Class & Construction:
35 x 7 die-drawn strands (up to 42 mm / 1-5/8")
35 x 19 die-drawn strands (over 44 mm / 1-3/4" and up)
Recommended to be used on tower-, european type mobile-,
and offshore cranes. Available in left- and right hand lang’s lay
construction. Recommended if you require a rope for single
line hoisting applications.
Due to reduced diameter tolerance to between +2% to
+4% it conforms to the tight LEBUS drum specification.
ALLOWED to be used with a swivel.
20
21
22
5/8
196
226
253
22.0
25.4
28.5
.96
1.12
1.25
3/4
287
317
358
32.2
35.6
40.2
1.41
1.56
1.76
7/8
402
444
482
45.1
49.9
54.1
1.98
2.19
2.37
527
565
615
59.2
63.5
69.1
2.62
2.81
3.06
23
24
25
26
28
30
1
1-1/8
656
771
892
73.7
86.6
100.2
3.26
3.84
4.44
32
34
35
1-1/4
1-3/8
1006
1086
1148
113.0
122.0
129.0
5.00
5.61
5.92
1-1/2
1221
1276
1371
137.2
143.4
154.1
6.31
6.59
7.08
1470
1483
1553
165.3
166.7
174.5
7.59
8.05
8.43
1839
1969
2156
206.7
221.3
242.3
9.50
10.20
11.10
2-1/4
2356
2554
2771
264.8
287.1
311.5
12.20
13.20
14.30
2-3/8
2923
3150
3390
328.5
354.1
381.0
15.10
16.30
17.50
3632
3850
4078
4349
4630
295.8
432.7
458.3
488.8
520.4
18.80
19.90
21.10
22.50
23.90
4870
5155
5410
5719
5994
547.4
579.4
608.1
642.8
673.7
25.20
26.60
27.90
29.50
31.00
36
37
38
40
41
42
1-5/8
44
46
48
1-3/4
50
52
54
2
56
58
60
62
64
66
68
70
72
74
76
78
80
- 18 -
Minimum Breaking Strength Weight
tons of
per meter
kN
2000 lbs
kg
1-7/8
2-1/2
2-3/4
3
3-1/8
Wire Ropes
Python® Hoist – Non-Rotating Wire Rope
3-layer type
Compacted rope design with 17 outer- and 21 inner strands
Outer strands have 7 compacted wires to enhance abrasion resistance
The CORE IS PLASTIC COATED to prevent metal-to-metal contact of rope core
to outer strands PLUS it locks in factory applied lubrication
Inner strands are reversed lay to provide non-rotating properties
Main Applications:
Load line on construction tower cranes. Main- and auxiliary hoist line
for tower- and overhead cranes as well as ship cranes which require
a non-rotating rope for severe dynamic load conditions. Hoist is a
medium strength non-rotating wire rope.
Rope Characteristic:
Constructed from 17 outer strands over a 2-layer 24 strand plastic
coated core. The plastic coating prevents metal to metal contact
between outer- and inner strands and thus nearly 100% reducing the
chance of undetectable inner wire- or strand failures. Plus, the plastic
shield locks in factory applied core lubrication. That is pretty fancy, I
say !
This rope is recommended for applications with high dynamic fatigue
loads where otherwise the core might fail. The plastic core shield acts
like a shock absorber much like in other Python® rope types.
Python® Hoist requires grooved drums, preferable with LEBUS
grooving.
Python® Hoist ropes are classified as NON-ROTATING
- 19 -
Wire Ropes
Non-Rotating Crane Wire Rope
with a plastic coated core
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Construction:
38 x 7
Class 34 x 7
Imperial Python® - Hoist
Medium strength, high fatigue resistant non-rotating type.
Compacting increases strength and sheave contact area.
The plastic coated core increases fatigue life and prevents
premature inner wire breaks as well as providing for permanent core lubrication. ALLOWED to be used with a swivel.
Rope
dia.
inch
Minimum Breaking Strength
tons of 2000 lbs
Hoist
Hoist
EIPS
EEIPS
lbs
per
ft
7/16
1/2
9/16
11.9
15.9
20.2
13.2
17.6
21.3
.37
.49
.63
5/8
3/4
7/8
25.3
35.7
47.8
27.8
39.3
52.7
.78
1.10
1.48
1
1-1/8
1-1/4
63.7
80.8
101.2
70.2
89.0
111.5
1.97
2.50
3.13
1-3/8
1-1/2
120.3
142.6
132.6
157.1
3.73
4.42
Metric Python® - Hoist
Rope
dia.
mm
- 20 -
Minimum Breaking Strength
kN
Hoist
Hoist
1960 N/mm2
2160 N/mm2
kg
per
meter
10
11
12
87.9
106.3
126.5
96.8
117.1
139.4
.45
.55
.65
13
14
15
148.4
172.2
197.6
163.5
189.7
217.8
.77
.89
1.02
16
18
19
224.8
284.6
317.1
247.8
313.6
349.4
1.16
1.47
1.64
20
22
24
351.3
425.2
506.0
387.2
468.5
557.6
1.82
2.20
2.62
26
28
30
593.7
688.6
790.6
654.4
758.9
871.1
3.07
3.56
4.09
Wire Ropes
Python® Lift – High Strength Non-Rotating
3-layer type
15 OVAL shaped outer strands
Compacted rope design for highest breaking strength
Outer strands have 5 wires to enhance abrasion resistance plus each strand has an
inserted aluminum buffer core
Inner strands are reversed lay to provide excellent non-rotating properties
Main Applications:
Main- and auxiliary hoist line for high performance mobile-lattice
boom- and for all types of construction tower cranes which require a
super high strength rotation resistant rope construction. This is THE
true NON-ROTATING rope construction.
Rope Characteristic:
This 3-layer rope is constructed from 15 unique oval shaped outer
strands over 24 alternating diameter sized inner strands. The outer
strands of Python® LIFT have 5 wires instead of the usual 7. Each wire
is slightly larger for better abrasion resistance. In the inside of each of
these strands we put a aluminum wire during manufacturing; this
aluminum wire has NO function once the rope is in service.
Python® Lift is our strongest non-rotating rope construction, both in
terms of strength with fixed AND with the ends allowed to rotate freely.
The gain in strength compared with the same sized 19x7 is an
astonishing 60%.
Python® Lift ropes are used where high fatigue resistance coupled with
high strength and excellent non-rotating properties is required; e.g. in
tunnel boring projects, subway construction, etc.
However, we do not recommended this rope to be used on smooth
drums. It works best on LEBUS drums with appropriately sized groove
contours.
Python® Lift ropes are classified as NON-ROTATING
- 21 -
Wire Ropes
High Strength Non-Rotating
Crane Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Class: 34 x 7
High strength super flexible true non-rotating rope. Oval outer strands provide for excellent sheave and drum contact
area. Because of it’s flexibility it is sensitive to multiple layer
drum crushing and mechanical damages and thus requires
grooved drums; works best on Lebus drum lagging. It is NOT
a good idea to use LIFT on smooth (un-grooved) drums.
LIFT is ALLOWED to be used with swivel.
Imperial Python® - Lift
Rope
dia.
inch
Minimum Breaking Strength
tons of 2000 lbs
Lift
Lift
EIPS
EEIPS
lbs
per
ft
7/16
1/2
9/16
13.1
17.4
22.1
14.4
19.2
24.4
.38
.51
.64
5/8
3/4
7/8
27.7
39.0
52.3
30.5
43.0
57.7
.81
1.14
1.53
1
1-1/8
1-1/4
69.8
88.4
109.3
76.9
97.5
120.5
2.03
2.58
3.19
Metric Python® - LIFT
Rope
dia.
mm
- 22 -
Minimum Breaking Strength
kN
Lift
Lift
1960 N/mm2
2160 N/mm2
kg
per
meter
10
11
12
96.2
116.4
138.6
106.1
128.3
152.7
.47
.57
.68
13
14
15
162.6
188.6
216.5
179.1
207.7
238.5
.79
.92
1.06
16
18
19
246.4
311.8
347.4
271.3
343.4
382.6
1.20
1.52
1.69
20
22
24
384.9
465.8
554.3
423.9
513.0
610.5
1.88
2.27
2.70
26
28
30
650.6
754.5
866.1
716.5
830.9
953.9
3.17
3.68
4.22
32
985.5
1085.3
4.80
Wire Ropes
Python® Construct 6 – Boom Hoist- and Overhead Crane Rope
6-strand crush resistant high strength rope
compacted design to increase strength
MaxFlat™ compression for optimum sheave contact
Main Applications:
High strength standard 6-strand rope for applications which require a
crush resistant rope to be used on multiple layer winding systems;
e.g. boom hoist on lattice boom mobile- and tower cranes. This rope
has also shown remarkable performance gains as main hoist rope on
port container cranes and on some overhead crane applications.
Rope Characteristic:
Python® Construct-6 is a swaged rope which is constructed from
specialty made engineered and sized 6-strand wire rope. The basic
wire rope is already manufactured with purpose intend to be compacted (or swaged) into the finished product. The degree of compacting is carefully selected to ensure the best compromise between
crush- and fatigue resistance. The strength increase compared to
standard 6-strand ropes varies between about plus 10% to 35%
depending on rope diameter.
Python® Construct-6 types are available in right- and
left hand lay. Ask for availability from stock.
Python® Construct-6 is available as a 25 wire (6 F-V) or 36 wire
(6WS-V) construction, in left- and right lay, bright or galvanized.
Choose 6 F-V as Boom Hoist rope, 6 WS-V for single layer drum
hoisting.
Because of the compacting process most of the rope’s initial stretch
(constructional stretch) has already been removed.
Python® Construct-6 is NOT rotation resistant or non-rotating
Standard:
DIN 2078/3051 where applicable.
- 23 -
Wire Ropes
6-strand compacted wire rope
Breaking Strengths
Construction:
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
6 F-V (up to 7/8” or 24 mm)
6 WS-V (1” / 26 mm and up)
6-strand rope with flat outer wire surface resisting drum
crushing and aiding in better multiple layer spooling. Compacting removes most of constructional stretch.
Imperial Python® Construct-6
Rope
dia.
inch
Nominal Strength
in tons of 2000 lbs
EIPS
Weight
per foot
lbs
5/16
3/8
7/16
7.5
10.1
13.1
.25
.34
.44
1/2
9/16
5/8
17.6
20.1
25.8
.59
.68
.87
3/4
7/8
1-1/8
1-1/4
35.2
45.9
70.9
94.8
1.18
1.55
2.37
3.15
Metric Python® Construct-6
Rope
dia.
mm
- 24 -
Minimum Strength
1960 N/mm2
kN
tons of 2000 lbs
Weight
per mtr
kgs
8
9
10
67.1
82.2
98.3
7.5
9.2
11.0
.37
.46
.55
11
12
13
116.2
135.6
156.3
13.1
15.2
17.6
.65
.76
.87
14
15
16
178.5
202.5
229.9
20.1
22.8
25.8
1.01
1.13
1.29
18
19
20
283.1
313.0
342.9
31.8
25.2
38.5
1.59
1.75
1.91
22
24
26
408.6
481.2
561.0
45.9
54.1
63.1
2.30
2.70
3.16
28
30
32
631.2
737.4
843.4
70.9
82.9
94.8
3.52
4.10
4.68
34
36
952.6
1061.8
107.1
119.3
5.34
6.03
Wire Ropes
STANDARD & HIGH PERFORMANCE
Rotation Resistant and
Non-Rotating Wire Rope
When loaded, every wire rope will develop
The characteristic of rotation resistant and non rotating wire
torque; that is it has the tendency to
rope is that the outer layer is twisted in the opposite direction
: unlay itself unless both rope ends are secured
of their inner layers. The sometimes confusing issue is that
against rotation.
many 8-, 9- and 10 strand constructions are multi-layer types
: cause a lower sheave block to rotate and to
but their inner strands are NOT twisted in the opposite
spin the line parts together.
direction and therefore these rope are NOT rotation resistant
or non-rotating; plus, for the untrained eye these rope look
Rotation resistant ropes can be divided into 3
very much alike their spin-resistant variants. These and
categories:
regular 6-strand ropes will spin violently and unlay
themselves when loaded, with one rope end allowed to spin
freely. They may also develop a significant drop in breaking
strength and an even larger drop in their fatigue life
characteristic when used with one end allowed to rotate.
As already mentioned, to achieve any degree of resisting
the tendency of a rope to spin and unlay under load all such
rope types (other than 4-strand ones) are constructed with 2
Spin-Resistant
(8 to 10 outer
strands)
or more layers of opposite twisted strands.
2-layer ropes have a larger tendency to rotate than 3-layer
ones (e.g. class 34x7). Furthermore, 2-layer spin-resistant
and rotation resistant ropes will develop only about 55% to
75% of their breaking strength when one end is allowed to
rotate freely. This number increases to between 95% to 100%
for 3-layer non-rotating ropes.
Another important issue is that 2-layer rotation resistant and
2-layer spin-resistant rope types have shown to break up from
Rotation Resistant
(11-13 outerstrands)
the inside. The 8 (e.g. 8x25 spin-resistant) or 12 outer strands
(19x7, 19x19, Compac®19) are not able to evenly distribute
Example of a 2-layer
rotation resistant
construction with 12
outer strands.
(19x7)
the radial forces and because of the inherent internal strand
cross overs (which make the rope spin- or rotation resistant)
the resultant severe notching stresses cause the rope core to
break up premature (unless the core is plastic coated, e.g.
Python® Multi). Unexpected and sudden rope failures may be
the result. Moreover, 2-layer spin-resistant or rotation
resistant ropes satisfy only low to moderate rotational
resistance demands.
Non-Rotating
(14 or more outer
strands)
3-layer rope constructions (e.g. class 34x7) have many more
outer strands which can much better distribute the radial
pressures onto the reverse lay inner strands. These ropes
should be selected for larger mobile- and ALL tower cranes.
- 25 -
Wire Ropes
CROSS SECTIONS OF OTHER COMMONLY USED WIRE ROPE
6 x 19 Seale
IWRC
6 x 26 Warrington-Seale
IWRC
6 x 25 Filler
IWRC
6 x 36 Warrington-Seale
IWRC
Compac®
631 FC
Compac®
631 FC
Compac®
625
Compac®
621
Compac®
819
8 x 19 Seale
IWRC
8 x 36
IWRC
DoPar®
825
Python®
Super 8
Python®
Multi
Python®
HS-9
Python®
Ultra
1x7
Strand
1 x 19
Strand
7x7
7 x 19
- 26 -
Wire Ropes
Inspection—the key to longer, safer wire rope use
Any wire rope in use should be inspected on a regular
basis. You have too much at stake in lives and equipment
to ignore thorough examination of the rope at prescribed
intervals.
The purpose of inspection is to accurately estimate
the service life and strength remaining in a rope so that
maximum service can be had within the limits of safety.
Results of the inspection should be recorded to provide a
history of rope performance on a particular job. On most
jobs wire rope must be replaced before there is any risk
of failure. A rope broken in service can destroy machinery
and curtail production. It can also kill.
In this scenario it is assumed
that the sheave gauge
diameter is equal or slightly
LARGER than the wire rope
diameter intended to be used.
If you see NO LIGHT under
the gauge, the sheave is O.K.
Because of the great responsibility involved in
ensuring safe rigging on equipment, the man assigned
to inspect should know wire rope and its operation
thoroughly. Inspections should be made regularly and the
results recorded.
When inspecting the rope, the condition of the drum,
sheaves, guards, cable clamps and other end fittings
should be noted. The condition of these parts affects rope
wear: any defects detected should be repaired.
To ensure rope soundness between inspections, all
workers should participate. The operator can be most
helpful by watching the ropes under his control. If any
accident involving the ropes occurs, the operator should
immediately shut down his equipment and report the
accident to his supervisor. The equipment should be
inspected before resuming operation.
Again, in this scenario it is
assumed that the sheave
gauge diameter is equal or
slightly LARGER than the wire
rope diameter intended to be
used. If you see LIGHT under
the gauge the sheave is worn
and needs to be replaced or
the selected rope diameter is
too large for the sheave (or
drum).
The Occupational Health and Safety Act has made
periodic inspection mandatory for most wire rope
applications.
Just looking at the rope is not enough
When an inspector takes a look at a rope, he may see
sections showing excessive wear. By flagging the rope,
he can quickly determine where the rope is rubbing or
contacting parts of the equipment, and then repair,
replace, or modify the condition causing the wear.
Inspections of sheaves is a relatively simple, yet very
vital task. A sheave groove gauge is used to check the
grooves in a sheave. Hold the gauge perpendicular to the
surface of the groove to observe properly the groove size
and contour, as in this illustration.
- 27 -
Wire Ropes
Sheaves should be checked for:
Groove
matches rope
Groove too
small, rope
gets damaged
Groove worn
out
New rope will
get damaged
Check for worn
and corrugated
sheaves
Wrong way. This is the
wrong way to measure wire
rope diameter. Widest
diameter is not being read.
Right
way. Set the
machinist’s caliper to read
the widest diameter.
1. Correct groove diameter
2. Roundness or contour to give proper support to the rope
3. Small holes, cracks, uneven surfaces, or other defects that
might be detrimental to the rope
4. Extreme deep wear
A sheave should also be checked to make sure it turns freely,
is properly aligned, has no broken or cracked flanges, and has
bearings that work properly.
Drums should also be inspected for signs of wear that could
damage rope.
Plain-faced or smooth drums can develop grooves or
impressions that prevent rope from winding properly. Repair
by resurfacing the face or replacing the lagging.
Scrubbing will occur if the rope tends to close wind. If the
tendency is to open winding, the rope will encounter abnormal
abuse as the second layer forces itself down between the open
wraps of the first layer on the drum.
Operating with a smooth drum calls for special care. Be sure
the rope is always tightly wound and thread laid on the first
layer. Any loosening of the line is easily observed as the
winding will be bad and the rope will be coming off with a series
of “bad spots.”
Grooved drums should be examined for tight or corrugated
grooves and for differences in depth or pitch that could damage
the second and subsequent layers. Worn grooves can develop
extremely sharp edges that shave away small particles of steel
from the rope. Correct this condition by grinding or filing a radius
to replace the sharp edge.
Drum flanges, as well as the starter, filler and riser strips,
should be checked. Excessive wear here often causes unnecessary rope abuse at the change of layers and cross-over
points.
Other places of contact such as rollers, scrub boards, guides
and end attachments should also be inspected.
Allowable Rope Oversize Tolerance
5% Diameter Tolerance
Nominal Maximum
Nominal Maximum
Diameter Diameter
Diameter Diameter
inch
mm
mm
inch
3/8
7/16
1/2
9/16
.395
.46
.525
.590
10
11
12
14
10.5
11.5
12.6
14.7
5/8
3/4
7/8
1
.65
.79
.92
1.05
15
16
18
20
15.7
16.8
18.9
21
1-1/8
1-1/4
1-3/8
1-1/2
1.18
1.31
1.44
1.58
22
24
26
28
23.1
25.2
27.3
29.4
1-5/8
1-3/4
1-7/8
2
1.71
1.84
1.97
2.10
30
32
34
36
31.5
33.6
35.7
37.8
Measure the widest diameter
Ropes and sheave grooves must be precisely fitted to each
other to get the most service out of your wire rope dollar. Make
measurement of rope diameter a normal part of your inspection
program.
There’s only one right way to measure rope diameter: use
machinist’s calipers and be sure to measure the widest
diameter. The drawings at the left compare the right way with
the wrong way.
This method is not only useful for measuring the diameter of
a new rope, but also for determining the amount of wear and
compression that has occurred while the rope has been in use.
Accurate recording of this information is essential in helping to
decide when to replace wire rope.
- 28 -
Wire Ropes
Common
Wire Rope Abuses
Neglect and abuse are the two chief
enemies of wire rope life. One costly form of
neglect is lack of proper field lubrication.
Abuse takes many forms: improper reeling
or unreeling, wrong size or worn sheaves,
improper storage, bad splicing are a few.
Crushing. Because of loose winding on drum, rope was pulled in
between underlying wraps and crushed out of shape.
Condition of Machinery
Wire rope performance depends upon
the condition of the equipment on which it
operates; poorly maintained equipment will
usually result in reduced rope life.
Effects of Shock-loading
and Vibration
The destructive effects of jerking or
shock-loading are visually noticeable.
Vibration has somewhat the same effect,
and is equally destructive. An individual
shock may be slight, but many rapidly
repeated slight shocks can have the effect
of several large shocks.
Vibration which occurs directly above a
load is often unavoidable. “Whipping: of the
section of rope immediately above the load
is also common. In these cases, rapid wire
fatigue is possible. For reasons of safety,
this section should be examined regularly.
Wire rope failure is usually cumulative.
Each repeated overstress brings the rope
nearer to failure. Thus, a wire rope may
become fatigued to a point close to failure
under a heavy load, and actually fail under
a much lighter load.
Too sudden load release. The sudden release of a load caused
birdcaging. Here individual strands open away from each other,
displacing the core. Also caused by tight or worn sheaves.
Lack of lubrication. Premature breakage of wires resulted from
“locking” of strands, which was caused by insufficient lubrication.
Overstressing
In any hoisting operation, there should be
no slack in the wire rope when the load is
applied. Otherwise, the resulting stress will
be excessive.
Overstressing can also be the result of
too-rapid acceleration or deceleration. Wire
rope will withstand considerable stress if the
load is applied slowly. As with ordinary twine,
a quick snap will cause overstressing and
breakage. This applies both when starting
to lift a load, and when bringing it to a stop.
Infrequent inspection. Neglect of periodical inspection left this rope
in service too long, resulting in considerable abrasion.
Corrosion
Corrosion can seriously shorten wire rope
life, both by metal loss and by formation of
corrosion pits in the wires. These pits act as
stress-concentration points in the wires in
much the same manner as do nicks.
Improper handling. Kink or “dog leg” was caused by improper
handling and /or installation. A kink causes excessive localized or
spot abrasion.
- 29 -
Wire Ropes
Wire rope left on machines shut down for
long periods of time deteriorates rapidly. To
preserve the rope for future use, it should be
removed, cleaned, and thoroughly lubricated.
Causes of
Corrosion Damage
Pitting, erosion, and surface effects of
many different types can all result in
corrosion damage. Because they tend to
increase corrosion, the following conditions
should be considered and noted when
applicable, during the ordering of wire rope
— acid and alkaline solutions, gases,
fumes, brine and salt air, sulphurous
compounds, and high humidity and
temperature. Lubricants are readily
available to reduce the severity of attack of
most of these conditions.
Reverse bending. Running this rope over one sheave and under
another caused fatigue breaks in wires.
Excessive exposure to elements. Too much exposure combined
with surface wear and loss of lubrication caused corrosion and
pitting.
Effects of Severe Heat
Where wire rope is subjected to severe
heat (e.g., foundry cranes) it will not give
the service expected because it will
deteriorate more quickly.
Wire ropes exposed to hot-metal handling
or other extreme heat sometimes require
independent wire rope cores.
Too long in service. Repeated winding and overwinding of this rope
on a drum while it was under heavy stress caused the unusually
severe wear shown.
Shifting Ropes From One
Job to Another
Sometimes an idle wire rope from one
operation is installed on another to keep
the rope in continuous service. This
extremely poor practice is an expensive
“economy.”
Because wire rope tends to “set” to the
conditions of its particular operating job, the
differing bends, abrasions, and stresses of
a new operations can produce premature
failure. Therefore, for maximum life and
efficiency, a rope should be used only on
the job for which it has been specified.
Machinery Operation
Some operators are harder on their
machinery than others and as a result they
get shorter rope life. In certain instances,
enough extra work is done to more than
offset the additional wear-and-tear on
equipment and wire rope. The operation
may be more efficient from the production
standpoint as a result, but those in charge
of rope purchases should be made aware
of the probable reduction in rope life and
increased rope costs.
Undersize sheave grooves. Sheaves were too small, causing
strands to pinch. Wires then fail in the valley between the strands.
Poor work procedures. Damage to strands and wires resulted
from electric arcing.
Lack of knowledge. Here’s what occurs when a loop which has
been “pulled through” and tightened remains in service.
- 30 -
Wire Ropes
Sheave and Drum dimensions
Recommended Sheave and Drum Contours:
Groove radii minimum: o.53 to .535x d for new rope
Groove radii maximum: o.55 to o.56x d
Sheave Groove depth: 1.5 x d
The performance of all wire ropes is depended on the good
condition and sufficient dimensions of sheaves and drums.
Too small sheaves and drums will reduce the service life of a
rope. This is more a question of ‘performance’ rather than
‘safety’. The table on this page is based upon
recommendations by the Wire Rope Technical Board.
Sheave opening angle should be 35˚ to 45˚ for applications
with fleet angles ≤ 1.5˚, for larger fleet angles use 60˚
opening.
Maximum rope fleet angle for general purpose ropes should
not exceed 4˚, for non-rotating/rotation resistant types and
Python® HS-9 and Ultra the fleet angle should not exceed
1.5˚
Drum Pitch for SINGLE layer minimum: 2.065 x groove radii
Drum Pitch for SINGLE layer maximum: 2.18 x groove radii
Drum groove depth: minimum ≥ o.375x d for helical grooved
Hardness: As wire rope has a hardness of about 50-55RC
we recommend that the hardness of sheaves and drums is
at least 35 RC, better is 40-45 RC
Proper Sheave and Drum Sizes
Construction
6x7
19 x 7 or 18 x 7
Rotation Resistant
6 x 19 Seale
6 x 21 filler wire
6 x 25 filler wire
Compac® 626
6 x 31 Warrington Seale
6 x 36 Warrington Seale
Compac® 636. Python® HS 9
8 x 19 Seale
8 x 25 filler wire
Python® Lift & Hoist,
Compac® 35
*D = tread diameter of sheave
Suggested
D/d* ratio
Minimum
D/d* ratio
72
42
51
51
45
39
39
39
35
35
41
32
30
30
34
34
30
26
26
26
23
23
27
21
20
20
d = nominal diameter of rope
Multi-layer drum systems should use
Compac® or type ‘V’ Python® rope
constructions having a steel core. The
higher fill factor of such rope constructions
will offer a greater resistance to crushing
and flattening than conventional rope
types. This is particular important for boom
hoist ropes on lattice boom cranes at the
cross over point from one rope winding to
the next.
Cranes equipped with multi-layer drum
systems which require rotation-resistant or
non-rotating rope are best served with
Compac® or Python® rope constructions
as these have a smooth outer surface
allowing the rope to better ‘glide’ from one
winding into the next.
To further reduce drum crushing have the
first rope layer wound onto the drum with
about 5-10% of the WLL and avoid that this
first layer un spools and re-spools without
tension. This would cause a ‘soft’ bottom
layer which will flatten rather quickly.
Compac® and Python® ropes also help
reduce strand interlocking which normally
occurs at adjacent rope wraps. This is
caused by too large of fleet angles as well
as is the cause of multiple layer windings
on smooth (un grooved) drums.
Compac® and Python® ropes have a
smooth and very round outer rope surface
which helps to minimize abrasive wear due
to strand-to-strand contacts.
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For further information please refer to
our “Wire Rope Inspection” catalogue.
Wire Ropes
Rope Strength
Design Factors
The rope strength design factor is the
ratio of the rated strength of the rope to
its operating stress. If a particular rope
has a rated strength of 100,000 lbs. and
is working under an operating stress
of 20,000 lbs., it has a rope strength
design factor of 5. It is operating at
one-fifth or 20% of its rated strength.
Many codes refer to this factor as the
“Safety Factor” which is a misleading
term, since this ratio obviously does
not include the many facets of an
operation which must be considered
in determining safety.
Wire rope is an expendable item —
a replacement part of a machine or
installation. For economic and other
reasons, some installations require
ropes to operate at high stresses
(low rope strength design factors). On
some installations where high risk
is involved, high rope strength
design factors must be maintained.
However, operating and safety codes
exist for most applications and these
codes give specific factors for usage.
When a machine is working and large
dynamic loadings (shock loadings)
are imparted to the rope, the rope
strength design factor will be reduced
which could result in overstressing
of the rope. Reduced rope strength
design factors frequently result in
reduced service life of wire rope.
Number of wire breaks
A.N.S.I.
NO.
Equipment
Number broken wires
in running ropes
in one
in one
rope lay
strand
12
4
Number broken wires
in standing ropes
in one
at end
rope lay
connection
B30.2
Overhead & Gantry Cranes
B30.4
Portal, Tower & Pillar Cranes
6
3
3
2
B30.5
Crawler, Locomotive & Truck Cranes
6
3
3
2
B30.6
Derricks
6
3
3
2
B30.7
Base Mounted Drum Hoists
6
3
3
2
B30.8
Floating Cranes & Derricks
6
3
3
2
A10.4
Personnel Hoists
6*
3
2*
2
A10.5
Material Hoists
6*
Not specified
Not specified
Not specified
*Also remove for 1 valley break. OHSA requires record keeping of wire rope condition.
Note: Current industry recommendations and standards are based upon the use of steel sheaves. The manufacturer of plastic or synthetic sheaves or liners should be consulted for their recommendations on the safe
application of their product, and possible revision in rope inspection criteria when used with their product.
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Not specified
Not specified
Wire Ropes
Wire Rope is a Machine
A wire rope is a machine, by dictionary definition:"An
assemblage of parts...that transmit forces, motion, and
energy one to another in some predetermined manner and to
some desired end.”
A typical wire rope may contain hundreds of individual
wires which are formed and fabricated to operate at close
bearing tolerances one to another. When a wire rope bends,
each of its many wires slides and adjusts in the bend to
accommodate the difference in length between the inside
and the outside bend. The sharper the bend, the greater the
movement.
Every wire rope has three basic components:
(1) The wires which form the strands and collectively provide
rope strength;
(2) The strands, which are helically around the core; and,
(3) The core, which forms a foundation for the strands.
The core of wire rope is an Independent Wire Rope Core
(IWRC), which is actually a rope in itself. The IWRC in Python
rope provides between 10% and 50% (in non-rotating
constructions) of the wire rope’s strength.
The greatest difference in wire ropes are found in the
number of strands, the construction of strands, the size of the
core, and the lay direction of the strand versus the core.
The wires of wire rope are made of high-carbon steel.
These carbon steel wires come in various grades. The term
“Grade” is used to designate the strength of the wire rope. Wire
ropes are usually made of Extra Improved Plow Steel (EIPS) or
Extra Extra Improved Plow Steel (EEIPS)
One cannot determine the Grade of a wire rope by its feel
or appearance. To properly evaluate a rope grade you must
obtain the Grade from your employer or Unirope.
Right Regular Lay
RRL
Left Regular Lay
LRL
Right Lang Lay
RLL
Left Lang Lay
LLL
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