Wire Rope Slings

WireRopeSlings

Wire Rope Slings

 

Single Leg Slings

 
Overhead lifting slings fabricated by Trinity Sling are made to industry standards established by the Association of Wire Rope Fabricators (AWRF) and in accordance with ASME B30.9. Trinity Sling uses only the highest quality domestic and imported wire rope and fittings to meet specific lifting requirements. Single leg chokers as detailed in this chart are custom-fabricated in any length with any variety of hooks, rings or custom end-fittings to suit specific lifting needs.

Chokers fabricated by Trinity Sling are designed with a break strength five times the stated working load limit (WLL). Every wire rope sling from Trinity Sling clearly states the WLL for a straight pull, basket hitch, and choker on its tag. Trinity uses large, easy to read, durable metal tags on all its chokers. Trinity’s tag includes the WLL, but it also clearly states the sling’s length and serial number for easy inventory management and sling recertification.

Online Documentation and Access

Trinity Sling documents all its fabricated products continuously from the end-user back to the manufacturers of wire rope or fittings. Each choker has a unique serial number on its tag. The tag itself becomes the sling’s identification number, as Trinity Sling utilizes InfoChip RFID tags to help sling users document inspections and re-certifications. InfoChip gives the user of the sling easy access via www.trinitysling.com to all certification for each sling by serial number.

Trinity Sling recommends all chokers be recertified with a pull-test annually. With the assistance of InfoChip, Trinity Sling can notify each customer when an individual sling’s recertification time is coming due, preventing unnecessary hazardous situations from wear and tear.

 

 

Single Leg Specs

ROPE
DIAMETER
VERTICAL CHOKER VERTICAL BASKET
IPS EIPS EEIPS IPS EIPS EEIPS IPS EIPS EEIPS
1/4 0.56 0.65 0.71 0.41 0.48 0.52 1.1 1.3 1.4
5/16 0.87 1.0 1.1 0.64 0.74 0.81 1.7 2.0 2.2
3/8 1.2 1.4 1.6 0.92 1.1 1.2 2.5 2.9 3.2
7/16 1.7 1.9 2.1 1.2 1.4 1.6 3.4 3.9 4.3
1/2 2.2 2.5 2.8 1.6 1.9 2.0 4.4 5.1 5.5
9/16 2.8 3.2 3.5 2.0 2.4 2.6 5.5 6.4 7.0
5/8 3.4 3.9 4.3 2.5 2.9 3.2 6.8 7.8 8.6
3/4 4.9 5.6 6.2 3.6 4.1 4.5 9.7 11 12
7/8 6.6 7.6 8.3 4.8 5.6 6.1 13 15 17
1 8.5 9.8 11 6.3 7.2 8.0 17 20 22
1 1/8 10 12 7.9 9.1 21 24
1 1/4 13 15 10 11 26 30
1 3/8 15 18 12 13 31 36
1 1/2 18 21 14 16 37 42
1 5/8 21 24 16 18 43 49
1 3/4 25 28 19 21 49 57
1 7/8 28 32 21 24 56 64
2 32 37 24 28 64 73
2 1/8 35 40 27 31 69 80
2 1/4 39 44 30 35 77 89
2 3/8 43 49 33 38 86 99
2 1/2 47 54 37 42 94 109
2 5/8 52 60 40 46 104 119
2 3/4 57 65 44 51 113 130
2 7/8 61 71 48 55 123 141
3 67 77 52 60 133 153
3 1/8 72 82 56 64 144 165
3 1/4 77 89 60 69 154 177
3 3/8 83 95 64 74 165 190
3 1/2 88 102 69 79 177 203

Rated Capacities basket hitch based on D/d ratio of 25.

Rated Capacities based on pin diameter no larger than natural eye width or less than the nominal sling diameter.

Rated Capacities based on design factor of 5.

Horizontal sling angles less than 30 degrees shall not be used.

Reference: Drawing and Table RC 1-11 Mechanical Splice IWRC from Wire Rope Sling Users Manual, Third Edition © 2007, Wire Rope Technical Board.

 

 

 

 

Two Leg Slings

 

Trinity Sling (Trinity) fabricates two leg wire rope slings (bridle slings) with capacities up to 73 tons. All two leg bridles are made from the highest quality materials. Bridles may be made from domestic materials or from imported wire rope and fittings as a value option. Domestic or imported, lifting slings and chokers fabricated by Trinity meet the requirements set forth in ASME B30.9. Lifting bridles are tagged with the working load limit (WLL) for all vertical lifts and lifts made at 60o, 45o, and 30o. Tags also clearly state the lifting sling’s length and serial number.

Trinity Sling fabricates two-part bridle slings to the customer’s requirements. Length, capacity and end fittings are all customizable to the customer’s needs. Two-leg bridles are perfect for picking long narrow loads. They also excel at lifting items both with two pick points and in conjunction with spreader bars. When lifting with a two-leg bridle, care must be taken to allow for the lowered capacity of the bridle as the horizontal sling angle increases (see chart on this page). Two leg lifting slings are designed and fabricated with a 5-to-1 design factor over the tagged WLL at each stated angle.

Trinity maintains documentation of material used in two-leg lifting slings from manufacturer to the end-user. Each bridle has a unique serial number and may be provided with an InfoChip RFID tag. All bridles made from ¾” wire rope and larger are automatically tagged with InfoChip RFID tags and receive a certificate of inspection, or proof test. Upon customer request all sizes can be proof tested and RFID tagged prior to delivery. Using InfoChip, customers can request notification for recertification on a regular basis. Trinity Sling recommends annual recertification and pull-test of all two-leg bridles.

 

Two Leg Specs

ROPE
DIAMETER
VERTICAL 60 45 30
IPS EIPS EEIPS IPS EIPS EEIPS IPS EIPS EEIPS IPS EIPS EEIPS
1/4 1.1 1.3 1.4 0.97 1.1 1.2 0.79 0.91 1.0 0.56 0.65 0.71
5/16 1.7 2.0 2.2 1.5 1.7 1.9 1.2 1.4 1.6 0.87 1.0 1.1
3/8 2.5 2.9 3.2 2.2 2.5 2.7 1.8 2.0 2.2 1.2 1.4 1.6
7/16 3.4 3.9 4.3 2.9 3.4 3.7 2.4 2.7 3.0 1.7 1.9 2.1
1/2 4.4 5.1 5.5 3.8 4.4 4.8 3.1 3.6 3.9 2.2 2.5 2.8
9/16 5.5 6.4 7.0 4.8 5.5 6.1 3.9 4.5 5.0 2.8 3.2 3.5
5/8 6.8 7.8 8.6 5.9 6.8 7.5 4.8 5.5 6.1 3.4 3.9 4.3
3/4 9.7 11 12 8.4 9.7 11 6.9 7.9 8.7 4.9 5.6 6.2
7/8 13 15 17 11 13 14 9.3 11 12 6.6 7.6 8.3
1 17 20 22 15 17 19 12 14 15 8.5 9.8 11
1 1/8 21 24 18 21 15 17 10 12
1 1/4 26 30 22 26 18 21 13 15
1 3/8 31 36 27 31 22 25 15 18
1 1/2 37 42 32 37 26 30 18 21
1 5/8 43 49 37 42 30 35 21 24
1 3/4 49 57 43 49 35 40 25 28
1 7/8 56 64 49 56 40 46 28 32
2 64 73 55 63 45 52 32 37
2 1/8 69 80 60 69 49 56 35 40
2 1/4 77 89 67 77 55 63 39 44
2 3/8 86 99 75 85 61 70 43 49
2 1/2 94 109 82 94 67 77 47 54
2 5/8 104 119 90 103 73 84 52 60
2 3/4 113 130 98 113 80 92 57 65
2 7/8 123 141 106 122 87 100 61 71
3 133 153 115 133 94 108 67 77
3 1/8 144 165 124 143 102 117 •72 82
3 1/4 154 177 134 153 109 125 77 89
3 3/8 165 190 143 165 117 135 83 95
3 1/2 177 203 153 176 125 144 88 102

Rated Capacities basket hitch based on D/d ratio of 25.

Rated Capacities based on pin diameter no larger than natural eye width or less than the nominal sling diameter.

Rated Capacities based on design factor of 5.

Horizontal sling angles less than 30 degrees shall not be used.

Reference: Drawing and Table RC 1-11 Mechanical Splice IWRC from Wire Rope Sling Users Manual, Third Edition © 2007, Wire Rope Technical Board.

 

 

 

 

Three Leg Slings

 
Three-part wire rope slings provide an exceptionally stable lift on large and awkwardly-shaped items. Three leg bridles fabricated with legs of different lengths are useful for lifting loads with uneven pick points. Three-part slings can also be fabricated with adjustable leg lengths for loads with an unknown center of gravity. Regardless of design, Trinity Sling’s three leg lifting slings are manufactured to the highest rigging standards in accordance with ASME B30.9 requirements.

Trinity Sling tags all three-part bridles with the vertical working load limit (WLL) as well as 60o, 45o, and 30o horizontal angles. (See chart for the WLLs by rope diameter.) The working load limit for all lifting angles provides an industry standard 5-to-1 design factor. Trinity Sling’s custom-designed tags are durable even in the most abusive environments. Each tag carries the sling’s serial number and length in addition to the stated WLLs. Tags are also available with InfoChip RFID tags for online documentation from this (Trinity’s) website. InfoChip online documentation can be used to remind customers of an annual recertification of three-leg slings recommended by Trinity Sling.

Three-part slings fabricated by Trinity Sling are individually designed to meet our customers’ specific requirements. Bridles can be made with numerous end fittings, including hooks, thimble eyes, shackles and shortening devices. Three-part slings can be made from all domestic material or high-quality imported material when cost savings is important. Regardless of material, all lifting slings manufactured by Trinity Sling meet the load ratings stated on this webpage with a full 5-to-1 design factor.

 

Three Leg Specs

ROPE
DIAMETER
VERTICAL 60 45 30
IPS EIPS EEIPS IPS EIPS EEIPS IPS EIPS EEIPS IPS EIPS EEIPS
1/4 1.7 1.9 2.1 1.5 1.7 1.8 1.2 1.4 1.5 0.84 0.97 1.1
5/16 2.6 3 3.3 2.3 2.6 2.9 1.8 2.1 2.3 1.3 1.5 1.7
3/8 3.7 4.3 4.7 3.2 3.7 4.1 2.6 3 3.3 1.9 2.2 2.4
7/16 5.1 5.8 6.4 4.4 5 5.5 3.6 4.1 4.5 2.5 2.9 3.2
1/2 6.6 7.6 8.3 5.7 6.6 7.2 4.6 5.4 5.9 3.3 3.8 4.2
9/16 8.3 9.6 11 7.2 8.3 9.1 5.8 6.8 7.5 4.1 4.8 5.3
5/8 10 12 13 8.8 10 11 7.2 8.3 9.1 5.1 5.9 6.5
3/4 15 17 18 13 15 16 10 12 13 7.3 8.4 9.2
7/8 20 23 25 17 20 22 14 16 18 9.9 11 12
1 26 29 32 22 26 28 18 21 23 13 15 16
1 1/8 31 36 27 31 22 26 16 18
1 1/4 39 44 33 38 27 31 19 22
1 3/8 46 53 40 46 33 38 23 27
1 1/2 55 63 48 55 39 45 27 32
1 5/8 64 73 55 63 45 52 32 37
1 3/4 74 85 64 74 52 60 37 42
1 7/8 84 97 73 84 60 68 42 48
2 95 110 83 95 68 78 48 55
2 1/8 104 119 90 103 73 84 52 60
2 1/4 116 133 101 116 82 94 58 67
2 3/8 129 148 112 128 91 105 65 74
2 1/2 141 163 123 141 100 115 71 82
2 5/8 156 179 135 155 110 126 78 89
2 3/4 170 195 147 169 120 138 85 97
2 7/8 184 212 159 183 130 150 92 106
3 200 230 173 199 141 162 100 115
3 1/8 215 247 187 214 152 175 108 124
3 1/4 232 266 201 230 164 188 116 133
3 3/8 248 286 215 247 175 202 124 143
3 1/2 265 305 230 264 187 215 133 152

Rated Capacities basket hitch based on D/d ratio of 25.

Rated Capacities based on pin diameter no larger than natural eye width or less than the nominal sling diameter.

Rated Capacities based on design factor of 5.

Horizontal sling angles less than 30 degrees shall not be used.

Reference: Drawing and Table RC 1-11 Mechanical Splice IWRC from Wire Rope Sling Users Manual, Third Edition © 2007, Wire Rope Technical Board.

 

 

 

 

Four Leg Slings

 
Four-part bridle slings excel at lifting large loads with multiple lifting points. Four-part slings are designed from the top lifting ring to the bottom connections to lift heavy items in a level manner. Four-part slings are usually fabricated with equal length legs, but they can be made to customer specifications with different length legs or even with adjustable legs. Trinity Sling makes all four-leg bridles custom to order and can add many different bottom attachments, including hooks, shackles, eyes and custom fittings. When asking for a four part sling the user must specify where the center of the load is so that the sling can be designed for a level lift.

All four-part slings from Trinity Sling are fabricated to the standards set forth in ASME B30.9 for overhead lifting devices. This standard requires that lifting slings be designed with a 5 to 1 design factor over the Working Load Limit (WLL). Tags provided on all Trinity Sling four-part bridles meet this same standard by providing WLL’s for 60o, 45o, and 30o horizontal angles. Trinity Sling’s tags are made from extremely durable galvanized steel that will remain on the sling after years of use. The tags remain legible and come with an RFID tag for tracking using InfoChip. InfoChip allows the user to look up a sling’s certification and pull test history at www.trinitysling.com using the sling’s printed serial number or chip scan.

Trinity Sling’s four-leg bridles provide our customers the ability to lift large, unwieldy and heavy loads. Customers must take care, however, to ensure a successful lift. Users must be aware of the reduced capacity of the sling at different horizontal lifting angles as stated on the tag. The customer must design the four-leg sling to account for the center of gravity. The pick points on the load must also be of sufficient capacity to carry their share of the lifted weight.

 

Four Leg Specs

ROPE
DIAMETER
VERTICAL 60 45 30
IPS EIPS EEIPS IPS EIPS EEIPS IPS EIPS EEIPS IPS EIPS EEIPS
1/4 2.2 2.6 2.8 1.9 2.2 2.4 1.6 1.8 2.0 1.1 1.3 1.4
5/16 3.5 4.0 4.4 3.0 3.5 3.8 2.5 2.8 3.1 1.7 2.0 2.2
3/8 5.0 5.7 6.3 4.3 5.0 5.5 3.5 4.1 4.5 2.5 2.9 3.2
7/16 6.8 7.8 8.5 5.9 6.7 7.4 4.8 5.5 6.0 3.4 3.9 4.3
1/2 8.7 10 11 7.6 8.8 9.6 6.2 7.1 7.8 4.4 5.1 5.5
9/16 11 13 14 9.5 11 12 7.8 9.0 9.9 5.5 6.4 7.0
5/8 14 16 17 12 14 15 9.6 11 12 6.8 7.8 8.6
3/4 19 22 25 17 19 21 14 16 17 9.7 11 12
7/8 26 30 33 23 26 29 19 21 24 13 15 17
1 34 39 43 30 34 37 24 28 31 17 20 22
1 1/8 42 48 36 42 30 34 21 24
1 1/4 51 59 44 51 36 42 26 30
1 3/8 62 71 54 62 44 50 31 36
1 1/2 73 84 63 73 52 60 37 42
1 5/8 85 98 74 85 60 69 43 49
1 3/4 98 113 85 98 70 80 49 57
1 7/8 112 129 97 112 80 91 56 64
2 127 147 110 127 90 104 64 73
2 1/8 138 159 120 138 98 113 69 80
2 1/4 155 178 134 154 109 126 77 89
2 3/8 172 197 149 171 122 139 86 99
2 1/2 189 217 163 188 133 154 94 109
2 5/8 207 238 180 206 147 169 104 119
2 3/4 226 260 196 225 160 184 113 130
2 7/8 246 282 213 244 174 200 123 141
3 266 306 231 265 188 216 133 153
3 1/8 287 330 249 286 203 233 144 165
3 1/4 309 354 267 307 218 250 154 177
3 3/8 330 381 286 330 234 269 165 190
3 1/2 354 406 306 352 250 287 177 203

 

Rated Capacities basket hitch based on D/d ratio of 25.

Rated Capacities based on pin diameter no larger than natural eye width or less than the nominal sling diameter.

Rated Capacities based on design factor of 5.

Horizontal sling angles less than 30 degrees shall not be used.

Reference: Drawing and Table RC 1-11 Mechanical Splice IWRC from Wire Rope Sling Users Manual, Third Edition © 2007, Wire Rope Technical Board.

 

 

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