Cortland Endless Grommet Slings

Grommets are manufactured by taking the base rope and splicing the ends together to form a continuous loop.

Compared to eye and eye slings, they have increased strength with little to no increase in the chosen rope diameter due to two legs holding the load. They can also be manufactured in shorter lengths because extra material to build the eyes is not needed. The challenge of endless grommet slings is that their minimum breaking load is directly controlled by the diameter of the pin that they are mounted on.

The values below are calculated on an 8:1 D:d.

Refer to Plasma® Braided Slings PDF for more information on how to covert to other diameters.

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Description

Grommet (endless loop) with formed eyes each end:

Cortland Endless Grommet Sling Illustration

 

Refer to Plasma® Braided Slings PDF for 60°, 45°, and 30° specifications

Nominal Size Vertical Choker Basket
Dia.
inch
Circ.
inch
MBL—
Pounds
Minimum Sling Length
Ft/Inch
Sling Capacity Ratings at
Work Load Limits (WLL) in Pounds

Plasma® 12 Strand

1/4 3/4 13,200 0′ 6″ 2,640 1,120 4,750
5/16 15/16 19,305 0′ 8″ 3,860 1,630 6,940
3/8 1-1/8 28,875 0′ 10″ 5,770 2,450 10,300
7/16 1-1/4 34,650 0′ 11″ 6,930 2,940 12,400
1/2 1-1/2 51,645 1′ 0″ 10,300 4,380 18,500
9/16 1-3/4 62,535 1′ 2″ 12,500 5,300 22,500
5/8 2 84,810 1′ 4″ 16,900 7,190 30,500
3/4 2-1/4 113,025 1′ 6″ 22,600 9,590 40,600
13/16 2-1/2 122,100 1′ 8″ 24,400 10,300 43,900
7/8 2-3/4 152,790 1′ 10″ 30,500 12,900 55,000
1 3 181,500 2′ 0″ 36,300 15,400 65,300
1-1/16 3-1/4 213,180 2′ 2″ 42,600 18,000 76,700
1-1/8 3-1/2 242,550 2′ 4″ 48,500 20,500 87,300
1-1/4 3-3/4 272,250 2′ 6″ 54,400 23,100 98,000
1-5/16 4 323,400 2′ 8″ 64,600 27,400 116,400
1-1/2 4-1/2 364,650 3′ 0″ 72,900 30,900 131,200

Plasma® 12×12

1-5/8 5 480,150 3′ 4″ 96,000 40,700 172,800
1-3/4 5-1/2 518,100 3′ 6″ 103,600 43,900 186,500
2 6 585,750 4′ 0″ 117,100 49,700 210,800
2-1/8 6-1/2 706,200 4′ 4″ 141,200 59,900 254,200
2-1/4 7 793,650 4′ 6″ 158,700 67,300 285,700
2-1/2 7-1/2 874,500 5′ 0″ 174,900 74,200 314,800
2-5/8 8 983,400 5′ 4″ 196,600 83,400 354,000
2-3/4 8-1/2 1,089,000 5′ 6″ 217,800 92,400 392,000
3 9 1,287,000 6′ 0″ 257,400 109,200 463,300
3-1/8 9-1/2 1,402,500 6′ 4″ 280,500 119,000 504,000
3-1/4 10 1,551,000 6′ 6″ 310,200 131,600 558,000
3-1/2 10-1/2 1,828,200 7′ 0″ 365,600 155,100 658,000
3-5/8 11 2,062,500 7′ 4″ 412,500 175,000 742,000
3-3/4 11-1/2 2,173,050 7′ 6″ 434,600 184,300 782,000
4 12 2,508,000 8′ 0″ 501,000 212,800 902,000
4-1/8 12-1/2 2,676,300 8′ 4″ 535,000 227,000 963,000
4-1/4 13 2,800,050 8′ 6″ 560,000 237,500 1,008,000
4-1/2 13-1/2 3,014,550 9′ 0″ 602,000 255,700 1,085,000
4-5/8 14 3,102,000 9′ 4″ 620,000 263,200 1,116,000
4-3/4 14-1/2 3,179,550 9′ 6″ 635,000 269,700 1,144,000
5 15 3,414,675 10′ 0″ 682,000 289,700 1,229,000
5-1/8 15-1/2 3,649,800 10′ 4″ 729,000 309,600 1,313,000
5-1/4 16 3,885,750 10′ 6″ 777,000 329,700 1,398,000
5-1/2 16-1/2 4,120,875 11′ 0″ 824,000 349,600 1,483,000
5-5/8 17 4,356,000 11′ 4″ 871,000 369,600 1,568,000
5-3/4 17-1/2 4,591,125 11′ 6″ 918,000 389,500 1,652,000
6 18 4,826,250 12′ 0″ 965,000 409,000 1,737,000
6-1/8 18-1/2 5,062,200 12′ 4″ 1,012,000 429,000 1,822,000
6-1/4 19 5,297,325 12′ 6″ 1,059,000 449,000 1,907,000
6-1/2 19-1/2 5,532,450 13′ 0″ 1,106,000 469,000 1,991,000
6-5/8 20 5,768,400 13′ 4″ 1,153,000 489,000 2,076,000
6-3/4 20-1/2 6,003,525 13′ 6″ 1,200,000 509,000 2,161,000
7 21 6,238,650 14′ 0″ 1,247,000 529,000 2,245,000
7-1/8 21-1/2 6,539,775 14′ 4″ 1,307,000 554,000 2,354,000
7-1/4 22 6,708,900 14′ 6″ 1,341,000 569,000 2,415,000
7-1/2 22-1/2 6,944,850 15′ 0″ 1,388,000 589,000 2,500,000
7-5/8 23 7,179,975 15′ 4″ 1,435,000 609,000 2,584,000
7-3/4 23-1/2 7,415,100 15′ 6″ 1,483,000 629,000 2,669,000
8 24 7,651,050 16′ 0″ 1,530,000 649,000 2,754,000
8-1/8 24-1/2 7,885,350 16′ 4″ 1,577,000 669,000 2,838,000
8-1/4 25 8,121,300 16′ 6″ 1,624,000 689,000 2,923,000

 


Patented Plasma® 12×12 braided construction creates strong lifting slings that are perfect for long length lift situations.

Cortland’s patented Plasma® rope is strong enough for very heavy lifts yet durable enough for repeated use. Our exclusive Plasma technology processes UHMWPE fibers into maximum strength efficiency. These fibers are then braided into a torque-free rope which is firm, yet flexible, and offers the ability to produce very long lengths. Utilizing the largest 12-strand braider in the world, Cortland can produce large diameters (up to 200mm) and long lengths.

Unlike wire ropes and jacketed round slings, Plasma 12×12 rope slings are easy to inspect. If repair is needed, the 12×12 construction offers the ability to replace worn strands. Plasma 12×12 rope slings are also neutrally buoyant, and do not absorb water, so there is no reduction in lifting capacity once immersed.

These slings are popular in offshore crane lifting systems because of their light weight and ease in handling.

 

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