Four-Leg Bridle Sling with Oval Link and Hooks

Four-Leg Bridle Sling with Oval Link and Hooks

 

Four-leg 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 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 1-14 Mechanical Splice IWRC from Wire Rope Sling Users Manual, Third Edition © 2007, Wire Rope Technical Board.

Four-Leg Bridle Sling with Oval Link and Hooks