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You are here: Home » Products » Wire Rope & Accessories » Steel Wire Rope » Endless Wire Rope Slings
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Endless Wire Rope Slings

  • DAWSON/OEM
  • 10-240mm
Quantity:
Endless Wire Rope Slings  
- Dawson Group Ltd. - China Manufacturer, Supplier, Factory
Endless Wire Rope Slings - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter       Endless Wire Rope Slings - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter

Nominal dia. d(mm) Breaking load
(KN)
Vertical working load of single leg Working load of double leg Working load of four leg Approx. weight (kg/m)
(KN) (KN) (KN)
α=0° α≤45° 45°≤α≤90° α≤45° 45°≤α≤90°
10 60 10 18 14 36 28 0.29
12 100 16 30 22 60 44 0.48
15 140 23 41 32 82 64 0.71
18 180 30 54 42 108 84 0.98
21 235 39 70 55 140 110 1.11
24 305 51 92 70 184 140 1.44
27 385 64 115 90 230 180 1.82
30 475 79 142 110 284 220 2.25
36 605 114 205 160 410 320 3.39
42 930 155 280 217 560 434 4.61
48 1220 203 365 284 730 568 6.02
54 1540 256 460 358 920 716 7.62
60 1900 316 570 442 1140 884 9.38
66 2305 384 690 538 1380 1076 11.36
72 2745 458 824 640 1648 1280 13.53
78 3220 536 964 750 1928 1500 15.91
84 3730 622 1120 870 2240 1740 18.43
90 4285 714 1285 1000 2570 2000 21.15
96 4880 812 1462 1136 2924 2274 24.07
102 5510 918 1652 1285 3304 2570 27.20
108 6175 1030 1854 1442 3708 2884 30.46
114 6875 1146 2062 1604 4124 3208 34.00
120 7615 1270 2286 1778 4572 3556 37.67
126 8400 1400 2520 1960 5040 3920 41.48
132 9210 1535 2763 2150 5526 4300 45.56
138 10032 1672 3010 2340 6020 4680 49.78
144 10945 1824 3282 2554 6564 5108 54.20
150 11855 1976 3556 2766 7112 5532 58.82
156 12860 2144 3860 3002 7720 6004 63.65
162 13860 2310 4158 3234 8316 6468 68.68
168 14955 2492 4486 3488 8972 6976 74.12
174 16050 2675 4815 3745 9630 7490 78.88
180 17145 2858 5144 4000 10288 8000 85.00
186 17600 2934 5282 4108 10564 8216 94.52
192 18695 3116 5608 4362 11216 8724 100.6
198 19800 3300 5940 4620 11880 9240 106.8
204 21160 3526 6346 4936 12692 9872 113.6
210 22345 3724 6702 5214 13404 10428 120.4
216 23710 3950 7110 5530 14220 11060 127.2
222 24990 4165 7498 5830 14995 11660 134.6
228 26355 4392 7906 6150 15812 12300 142.1
234 27815 4636 8345 6490 16690 12980 149.6
240 29275 4880 8784 6832 17568 13664 157.1

Note: Safety factor 6:1,for use in general frequent lifting environment.

Attension:
1. The connecting method should be correct during the lifting, please make a test before the lifting, after the test is successful, then to lift, it must be smoothly during the lifting and forbidden to be impacted.
2. When you use two sling together, please put the sling directly to the double hook, the two slings separately put into the bear load center position of the hook.
3. When use four slings together, every tow slings put into the double hook, pay attention that the two slings can not wrap, the four slings should put on the bear load center position of the hook.
4. Any unwonted matter happened, please stop to use, after it is inspected by the qualified people, then use it again.
5. When install the endless wire rope sling, please make sure that the lifted goods is match with the sling, forbidden to use it overload.
6. Endless sling can not twist lift and incline lifting.
7. When the goods have some edges, should add some protection, can not use the sling directly to the goods.
8. There should has the visible red label in the forbidden lifting area, pay attention to that the forbid lifting the goods in the forbidden lifting area.
 
the forbidden lifting area - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
Please reject it after the sling happened with any of the below matters:
1. Each parts of the endless wire rope sling has been frayed, distorted and affect the normal usage.
2. Each parts of the endless wire rope sling has been rusted and affect the normal usage.
3. When find the endless wire rope sling with the loosed strand, then stop using and waiting for the inspected by the qualified people, then repair or reject.
4. The seed steel wire rope for the endless wire rope sling should be rejected according with the steel wire rope reject standard.

 
Wire Rope Sling Application
Hitches
1. Vertical- The Vertical, or straight, attachment is simply using a sling to connect a lifting hook or other device to a load. Full rated load of the sling may be used, but never exceeded. A tagline should be used on such a lift to prevent rotation, which can damage the sling. A wire rope sling with a hand-tucked splice can unlay and fail if the sling is allowed to rotate.
2. Choker- Choker Hitch configurations reduce the rated capacity of a sling by 20 to 25 percent. If a load is hanging free, the normal choke angle is approximately 135°. When the choke angle is less than 120°, an adjustment in the choker rated capacity must be made(see illustration below). Extreme care should be taken to determine the choke angel as accurately as possible. As indicated in the table below, the decrease in rated capacity is dramatic.
   
Hitches - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
 
   Choker Hitch
RATED CAPACITY ADJUSTIMENT
Choke  IWRC and Fiber Core Rope
Angle       Percent of
(Degrees)    Choker Rated Capacity
Over 120        100
  90-120          87
  60-89            74
  30-59            62
Up to 29         49

Hitches - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
 
Angle Adjustment
Rated capacity adjustment for slings in choker hitch when angle is less than 120°. Choke angles greater than 135°are unstable and should not be used.
 
3. Basket- Basket hitched distribute a load equally between the two legs of a sling, within limitations imposed by the angles at which legs are rigged to the load(see discussion of sling angles).
Basket Hitch
CAPACITY ADJUSTMENT
    Angle                      Percent of Single Leg
(Degrees)                          Capacity
       90                                     200
       60                                     170
       45                                     140
       30                                     100

Basket Hitch - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
 
Angle
A basket hitch has twice the capacity of a sling leg only if legs of sling are vertical, and only if D/d ratio is 25:1 and it is vertical. D/d>25:1 per ANSI B30.9.
 
WARNING: Do not use, or allow the use of the products in this catalogue, unless the user has read and understands the applicable instructions and product warnings. Information available upon request.
 
Reeving
Revving through connections to load increases load on connections fitting by as much as twice.
Do not reeve.
 
Reeving - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
Triple and Quad Leg Slings
Triple leg slings have 50% more capacity than double leg only if the center of gravity is in center of connection points and the legs are adjusted properly(equal share of the load)
Quad leg slings offer improved stability but do not provide increased lifting capacity.
 
Triple and Quad Leg Slings - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
 
Center of Gravity(COG)
The location of the center of gravity to the pick points is an important consideration.
 
Center of Gravity(COG) - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
COG and Sling Loading
When lifting vertically, the load will be shared equally if the center of gravity is spaced equally between the pick points, as in the first illustration at right. If the weight of the load is 10,000 lbs., then each sling will have a load of 5,000 lbs. and each shackle and eyebolt will also have a load of 5,000 lbs.
When the center of gravity is not equally spaced between the pick points, as in the second illustration, the slings and fittings will not carry an equal share of the load. The sling connected to the pick point closest to the center of gravity will carry the greatest share of the load. Sling 2 is closest to COG. It will have the greatest share of load.
Sling 2 = 10,000 × 8 /(8+2)= 8,000
Sling 1 = 10,000 × 2 /(8+2)= 2,000
 
COG and Sling Loading - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
 
WARNING: Do not use, or allow the use of the products in the catalogue, unless the user has read and understands the applicable instructions and product warnings. Information available upon request.
 
 
Sling Angle
Sling angle (also called angle of loading) is the angle measured between a horizontal plane and the sling leg or body. This angle is very important and can have a dramatic effect on the rated capacity of the sling (see illustration below) . As illustrated at right, when this angle decreases, the load on each leg increases. This principle applies whether one sling is used to pull at an angle, in a basket hitch, or for multilegged bridge slings. Sling angles of less than 30° shall not be used.

Angles and Load
Angles and Load - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter Sling Angle - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
Angles and Stress
How do you carry two buckets of water? These illustrations typify the stresses imposed on slings when the legs are attached to the load at various angles.
 
Sling Angles - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
 
             Load Angle Factor
Sling Angle                   Load Angle
Degrees(A°)                 Factor =L/H
   90                              1.00
   60                             1.155
   50                             1.305
   45                             1.414
   30                             2.00
 LOAD ON EACH LEG OF SLING=
(Load÷2)×LOAD ANGLE FACTOR
ANSI B30.9 recommends against the use of a horizontal sling angle smaller than 30°.
Sling Angles 1 - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter       Sling Angles 2 - Dawson Group Ltd. - China Manufacturer, Supplier, Factory, Exporter
WARNING: Do not use, or allow the use of the products in the catalogue, unless the user has read and understands the applicable instructions and product warnings. Information available upon request.
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