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.

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 60^o, 45^o, and 30^o. 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	5^–7		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.

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 60^o, 45^o, and 30^o 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.

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 60^o, 45^o, and 30^o 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.